Clinical Features and Genetic Analysis of 48 Patients with Chronic Granulomatous Disease in a Single Center Study from Shanghai, China (2005-2015): New Studies and a Literature Review.
Chronic Granulomatous Disease (CGD; OMIM number 306400), which was firstly described in 1957 [1, 2], is a rare inherited primary immunodeficiency (PID). CGD is caused by defect in one of the subunits of nicotinamide dinucleotide phosphate (NADPH) oxidase, resulting in failure of phagocyte to generate superoxide. In neutrophil phagosome, superoxide combines with hydrogen ions to generate hydrogen peroxide, which is important for the intracellular killing of microorganisms . As a result, CGD patients usually suffer from severely recurrent, often life-threatening bacterial and fungal infections [4-6].
NADPH oxidase is a transmembrane enzyme complex which is comprised of [gp91.sup.phox], [p22.sup.phox], [p47.sup.phox], [p67.sup.phox], [p40.sup.phox], and Rac1/2 GTP binding protein subunits [7, 8]. It has been reported that CGD could be caused by defects in any of the components of this oxidase . The most common reason leading to CGD is the defect on [gp91.sup.phox], which is encoded by CYBB gene, localized on chromosome Xp21.1. Mutations on CYBB gene lead to X-linked recessive CGD (XL-CGD), which accounts for about 70-75% of CGD patients. Autosomal recessive CGD (AR-CGD) is mostly caused by defects in 1 of the 3 components of NADPH oxidase: [p47.sup.phox] (encoded by NCF1 gene, localized on chromosome 7q11.23), [p22.sup.phox] (encoded by CYBA gene, localized on chromosome 16: 16q24), and [p67.sup.phox] (encoded by NCF2 gene, localized on chromosome 1q25), accounting for about 20%, 5%, and 5% CGD patients, respectively. Defects on [p40.sup.phox], which is encoded by NCF4 gene, localized on chromosome 22q13.1, could also lead to AR-CGD [4, 6, 9]. Besides, a defect on Rac2 (p.D57N) was also reported to be associated with human phagocytic immunodeficiency .
The incidence of CGD is approximately 1 case in 200, 000 newborns in the United States  and Europe . In Asia, the largest cohort study was from Japan, in which 229 patients were enrolled and the incidence was estimated to be about 1 out of 220, 000 birth [12, 13]. The clinical course varied in CGD patients and most of them had an onset within the first year of life. Infections in skin, lung, gastrointestinal tract, lymph nodes, and liver were often observed in CGD patients. Granulomata, which has potential threat to cause ureteral, urinary bladder, esophagus or stomach obstruction, was also reported in CGD patients [4, 11, 14]. Many researches have been conducted in CGD patients worldwide over the last decades, however, little is known about Chinese CGD patients. In fact, although some CGD patients have been reported from Mainland China, most of the researches mainly focused on the molecular defects and BCG infections in the patients, providing little clinical information [15-17]. There are no established CGD registry in China and thus make a comprehensive and systematic analysis of CGD on Chinese individuals difficult. Further studies are still needed to clarify the clinical characteristics, complications, epidemiology, genetic information, and outcomes on Chinese CGD population.
Shanghai Children's Medical Center (SCMC) is a pediatric tertiary referral teaching hospital in Shanghai, China, which is one of the biggest PID centers in Mainland China. Here, we report 48 CGD patients who were diagnosed in our PID center from 2005 to 2015, which is the largest CGD cohort study from Mainland China. Furthermore, 157 CGD patients reported previously are reviewed in this paper, which aim to summarize and provide further insight into the characterization of CGD in China.
2. Patients and Methods
2.1. Patients. During 2005-2015, a total of 48 patients who were diagnosed with CGD were enrolled in this study. The diagnosis of CGD was based on the diagnostic criteria for primary immunodeficiency by Pan-American Group for Immunodeficiency (PAGID) and European Society for Immunodeficiencies . The classification of CGD was based on the recommendation of the International Union of Immunological Societies Expert Committee for primary immunodeficiency (2015) .
This study was approved by the Ethical Committee of Shanghai Children's Medical Center, and written informed consent was obtained from all the participants.
CGD patients who were reported in Mainland China previously in English and Chinese literatures were reviewed in this paper. Most of the patients were reported from Children's Hospital of Chongqing Medical University (Center 2), Children's Hospital of Fudan University (Center 3), and Beijing Children's Hospital (Center 4).
2.2. Data Collection. The patients' detailed clinical and laboratory data were retrospectively collected from the patients' medical records, including clinical manifestations, age at onset and diagnosis, parental consanguinity, family history and frequency of infections, lesions induced by inoculation with BCG, laboratory tests, treatments, and outcomes.
The onset age was defined as the age when obvious infections initially occurred in the patients. The diagnosis age was taken as the age when CGD-related gene mutations were identified or low respiratory burst activation in neutrophils was found in the patients. Bacillus Calmette-Guerin (BCG) infections were divided into 3 categories according to the previous study: (1) regional infection, which included abscess or ulcer formation at the site of vaccination or ipsilateral axillary, supraclavicular, and cervical lymph node enlargement; (2) distant infection, which involved at least 1 distant site beyond regional ipsilateral infection, such as osteomyelitis, distant skin, and pulmonary infections; (3) disseminated infection, which involved more than 1 infection as mentioned in the distant infection .
2.3. DHR Flow Cytometric Assay. DHR flow cytometry assays were performed as previously described. In brief, 50 [micro]l whole peripheral blood was used in this assay. Firstly, the erythrocytes were lysed using 1x lysis buffer, then the leukocytes were loaded with DHR at 37[degrees]C for 5 minutes in the presence of catalase. After that, the leukocytes were activated with PMA for 15 minutes and the leukocytes were immediately analyzed by flow cytometry. Data were analyzed using Cell Quest software (BD FACSCalibur TM Flow Cytometer).
2.4. Genetic Analysis. Genomic DNA was isolated from peripheral blood by using RelaxGene blood DNA isolation kit (Tiangen Biotech Co. LTD., Beijing, China). CYBB, CYBA, NCF1, NCF2, and NCF4 gene mutations were analyzed using PCR amplification followed by direct sequencing. PCR reaction was performed in 30 cycles of 94[degrees]C for 15 seconds, 58[degrees]C for 30 seconds, and 72[degrees]C for 1 minute. Products were verified by 1% agarose gel electrophoresis and then sent for Sanger sequencing. Mutations were identified by alignment with standard sequence published in NCBI. Reverse chain was also sequenced for confirmation. High throughput exon sequencing was done in parts of patients and PCR followed by Sanger sequencing was conducted to verify the sequencing results.
2.5. Statistical Analysis. Statistical analysis was accomplished using SPSS 17.0 software. Significant differences were determined by an unpaired t-test. P value < 0.05 was considered as statistically significant.
3.1. Population. A total of 48 CGD patients (44 male and 4 female) were enrolled in this study. These patients were distributed in 17 provinces and municipalities throughout Mainland China. The first CGD case diagnosed in our PID center was in 2005, while most of the patients (98%, 47/48) were diagnosed after 2007 and 75% (36/48) patients were diagnosed after 2010 (Table 1).
The 48 patients were from 48 unrelated nonconsanguineous families. Family history information was obtained from 47 of 48 patients, while P35 was an adopted child, whose family history information could not be collected. 13 of 47 patients (28%) had positive family histories, which means early death histories in other family members within three generations. Of the 13 patients, 8 (P10, P20, P23, P25, P27, P31, P43, and P46) had family histories of suspected PID in the first generation. All except P43 had elder brothers' death at an early age. P43 had an elder sister who died due to systemic infection at 3 years old. Four patients (P22, P27, P33, and P39) were reported to have family histories in the second generation, and all of them had maternal uncles' death at an early age. No patient had third-generation family history. The other 34 patients (71%) had no family histories (Table 1). Among the 13 patients with positive family histories, 11 patients carried CYBB gene mutations, P43 carried NCF2 gene mutation, and P46 had unknown gene mutation.
3.2. Clinical Courses. The mean onset age of 48 CGD patients was 0.29 [+ or -] 0.66 years old (median 0.83 years old, range 0-3.5 years old). Most of the patients (90%, 43/48) had an onset within the first 3 months of life and over half (52%, 25/48) of them had an onset within the 1st month of life. Of them, 13% (6/48) patients had an onset after birth. Only 1 patient (P40) had an onset of symptoms after 2 years old (3.5 years old) (Table 1 and Figure 1). The mean age at onset was 0.23 [+ or -] 0.45 years old in 36 XL-CGD patients and 0.16 [+ or -] 0.15 years old in 3 AR-CGD patients. There was no significant difference between them (/ = 0.257, P = 0.799).
The mean age at diagnosis was 2.24 [+ or -] 2.98 years old (median 1 year old, range 0.07-15.00 years old). About one-half of patients were diagnosed after 1 year old (Table 1 and Figure 1). The mean diagnosis age was 2.38 [+ or -] 3.16 years old in 36 XL-CGD patients and 0.43 [+ or -] 0.28 years old in 3 ARCGD patients. There was no significant difference between them (t = 1.059, P = 0.296).
The average lag time between onset of symptoms and diagnosis in CGD patients was 1.95 [+ or -] 2.75 years (median 0.75 years, range 0.03-13 years), which indicated there were obvious time lags between onset and diagnosis of CGD. Of these patients, 36 XL-CGD patients had an average lag time of 2.16 [+ or -] 2.91 years, while 3 AR-CGD patients had an average lag time of 0.27 [+ or -] 0.21 years. There was no significant difference between them (f = 1.109, P = 0.275).
To date, 11 patients (22%) had died with an average age of 2.91 [+ or -] 3.77 years old (median 1 year old, range 0.5-13 years old), 7 of whom (64%, 7/11) died before 1 year old. Among the 11 patients, 10 (91%) carried CYBB gene mutations; only P47 (9%) had unknown gene mutation. All of the 11 patients died due to infections, including severe pneumonia (3 patients, P1, P33, and P47), septicopyemia (3 patients, P23, P25, and P29), pulmonary tuberculosis (1 patient, P3), osteomyelitis (1 patient, P13), liver abscess (1 patient, P35), necrotic enteritis (1 patient, P36), and infections after haematopoietic stem cell transplant (HSCT) (1 patient, P30). The other 37 patients were alive with an average age of 6.59 [+ or -] 3.95 years old (median 6.5 years old, range 1-20 years old) (Table 1).
3.3. Infectious Clinical Manifestations. In our cohort study, the most prevalent infectious sites were the lungs, followed by gastrointestinal tract, lymph nodes, and skin (Table 2).
Pulmonary infections were observed in most of CGD patients (77%, 37/48), including pneumonia, pulmonary tuberculosis, and bronchitis. Pneumonia was the most common pulmonary infection, occurred in 73% (35/48) CGD patients. 10 of 35 patients were reported to have recurrent pneumonia at least 2 episodes, 3 of whom (P7, P15, and P17) had recurrent pneumonia with an average of 10, 4, and 2 episodes per year, respectively. Of the 37 cases, 6 were diagnosed with fungal pneumonia (P6, P15, P18, P20, P28, and P37). Pathogenic microorganism was isolated from 6 patients, including Aspergillus spp. from P6, mold from P28, mycoplasma spp. from P14, Viridans streptococci from P4, Staphylococcus aureus and Enterobacter aerogenes from P20, and Acinetobacter baumannii from P24. Pulmonary tuberculosis (TB) was reported in 7 patients, and all of them were considered to be caused by BCG infections. That is because they all had adverse reactions to BCG but did not exposure to mycobacterium tuberculosis. However, mycobacterium tuberculosis culture was not done in this study. Of the 7 cases, 2 (P3 and P34) had pulmonary TB alone, and 5 (P4, P6, P8, P21, and P28) were complicated by pneumonia. Besides, bronchiolitis was reported in P42, who was complicated by pneumonia. In addition to LRIs, upper respiratory infections (URIs) were reported in CGD patients previously. In our single center study, 6 patients (P7, P15, P21, P22, P36, and P37) were reported to have recurrent URIs ([micro]5 episodes per person per year), 3 of whom had URIs more than 10 episodes per person per year, and all of the 6 patients presented with upper respiratory infection as initial symptom. Of the 6 patients with recurrent URIs, 5 (P7, P15, P36, and P37) were complicated by pneumonia, and P21 was complicated by pneumonia as well as TB. Besides, maxillary sinusitis was observed in P17, who was complicated by pneumonia (Table 1).
After the lungs, gastrointestinal tract was most vulnerable to being affected (54%, 26/48). The most frequent disease was perianorectal abscess (18 patients, 38%), 5 patients were treated with abscess excision. Of them, 4 patients recovered after the surgeries, only P35 had relapse. The remaining 13 patients took conservative treatments, most of whom (92%, 12/13) had protracted course. Burkholderia Cepacia was isolated from P23. Of the 18 patients, 8 were complicated by recurrent diarrhea, 1 by liver abscess (P31), and 1 by recurrent diarrhea as well as liver abscess (P46). A significant number of patients (15 patients, 31%) suffered from recurrent diarrhea, and most of them had an early onset after birth, with an average of 3.47 [+ or -] 2.27 months old (range 0.07-6 months). In the 15 patients, P46 had diarrhea due to intestinal flora imbalance after intensive use of antibiotics, P2 due to Pseudomonas aeruginosa infection. P10 and P19 were diagnosed with rotavirus enteritis, P6 with bacillary dysentery, P36 with necrotizing enteritis. The recurrent diarrhea gradually improved in all the 15 patients, and the latest case (P6) had his symptomatic relief at 3 years old. In the 15 patients, 8 were reported to have anemia caused by diarrhea, including mild anemia in 5 patients (P4, P10, P19, P26, and P29) and moderate anemia in 3 patients (P5, P15, and P38). Besides, liver abscesses were reported in 4 patients (8%, P13, P21, P31, and P46) in this study. Staphylococcus aureus was isolated from P13, who had recovery after drainage of liver abscess and anti-infective therapy. P21 was diagnosed with tuberculous liver abscess due to BCG infection (Table 1).
Lymphnoditis (50%, 24/48) was also commonly reported in this study (Table 1), and most of the cases (79%, 19/24) were caused by BCG infections. Of the 19 cases, enlarged axillary lymph nodes were observed in 15 cases (78.95%, 15/19), followed by cervical ones in 3 cases (16%, 3/19) and an inguinal one (5%, 1/19). P29 suffered from lymphnoditis in his left axilla due to BCG infection; then lymph node abscess was observed in his left groin. Of the remaining 5 cases with lymphnoditis not due to BCG infections, inguinal lymphnoditis was observed in 3 cases (P17, P24, and P30) and submandibular lymph node abscesses in 2 cases (P36 and P40). Staphylococcus aureus and burkholderia cepacia were isolated from P40 and P30 after pus cultures. All of the 5 cases had recovery after surgical drainage.
Skin was the fourth frequently affected site of this disease (22 patients, 46%). Skin abscesses were observed in 11 patients (23%, 11/48) with late onsets, 7 of whom (64%, 7/11) had their onsets after 5 years old. P39 was diagnosed with cutaneous TB abscess. Most of the skin abscess were located at arms, iliaca, face and ear. Pustular eruption were observed in 10 patients (21%, 10/48), 8 of whom (80%, 8/10) had an onset within the 1st week of life. P14 was diagnosed with orbital cellulitis on the right side combined with dacryocystitis, and the cut of the lacrimal sac had a granulomatous change. Besides the infectious symptoms mentioned above, some noninfectious symptoms were also observed in this study. Eczema was reported in 8 patients in this study. Of them, P39 suffered from eczema complicated by skin abscesses, and P27 suffered from eczema complicated by pustular eruption. Four patients (P5, P14, P31, and P41) were reported to have skin granulomas. P5 suffered from skin granulomas complicated by skin abscess (Table 1).
Septicopyemia was also reported in CGD patients previously. In the present study, 11 patients (23%) suffered from septicopyemia, and treatments with antibiotics were effective for most of these cases (73%, 8/11), while the remaining 3 patients died of septicopyemia (P23, P25, and P29). Other severe infections, such as central nervous system (CNS) infections, organ abscesses were less reported in this study. CNS infections were reported in P18 and P27, with purulent meningitis and encephalitis, respectively. Splenic abscess, left kidney abscess, and testicular abscess was observed in P41, P2, and P22. P13 was diagnosed with osteomyelitis due to Acinetobacter baumannii infection.
Besides, thrush and otitis media were reported in 23% (11/48) and 8% (4/48) patients, respectively. Six patients (P6, P10, P24, P28, P33, and P36) were still having thrush after 1 year old. Other infections less occurred in our study. Virus infections were observed in 4 cases, including Epstein-Barr virus (EBV) infection in P4 and P17, respiratory syncytial virus (RSV) infection in P11, and cytomegalovirus (CMV) infection in P13. Besides, urinary tract infection was reported in P14.
Infection-related symptoms also occurred in this study. Hepatosplenomegaly was the most common infection-related symptom, accounting for 40% (19/48) cases. Most of them (95%, 18/19) were complicated by liver damage. Hepatomegaly was reported in 17% patients (8/48), and all of them were complicated by liver function damage (Table 1).
3.4. Other Clinical Manifestations. Anemia was observed in 11 patients (23%) in this study, including mid anemia in 7 patients and moderate anemia in 4 patients. Of the 11 patients, 8 had anemia due to diarrhea. Congenital heart disease was reported in a significant number of patients (13%, 6/48), including atrial septal defect in P20, atrial septal defect complicated by patent ductus arteriosus in P3, patent foramen ovale in P9 and P24, ventricular septal defect in P10, double arches, and left arch atresia complicated by tracheostenosis in P37.
Allergic diseases were also reported in the present study. Eczema occurred in 8 patients. P13 suffered from eczema as well as allergic rhinitis. P4 suffered from eczema as well as hypereosinophilia (0.88 x [10.sup.9] /L). Besides, urticaria was reported in P17.
Autoimmune disease was reported in 3 patients, including Kawasaki disease in P10 and P38 and Behfets disease in P28. P28 had an onset at 6 years old, presenting with recurrent oral ulcer and fever. He suffered from recurrent skin and joint pains and then ulceration at 8 years old, which responded well to hormone therapy.
Other noninfections were rarely observed in this study. Hydrocele was reported in P14, left renal cyst in P31, vitamin K deficiency in P11, severe malnutrition and neonatal hyperbilirubinemia in P18, and acanthosis nigricans in P17.
3.5. BCG Complications. Of the 48 GD patients, 45 patients (94%) received BCG vaccination after birth according to a national vaccination program, 1 patient (P18, 2%) did not received BCG vaccination because of neonatal hyperbilirubinemia, and the remaining 2 patients (P16 and P37, 4%) had unknown vaccination histories. In the 45 BCG-vaccinated CGD patients, more than half (53%, 24/45) suffered from BCG infections. The most frequent pattern was distant infection (20 cases), followed by regional infection (17 cases) and disseminated infection (2 cases). Of them, 12 patients were reported to have both regional and distant infections. Disseminated infection was observed in P8 and P21 (4%) (Table 1). P8 had lymph node enlargement in his groin and right axilla, complicated by TB in bone and lung. P21 had enlarged lymph nodes in his left armpit and liver tuberculosis 3 months later after BCG vaccination, thus was given regular anti-TB treatment. Six months later, he was infected with measles virus, followed with dissemination of TB infection to other sites (lung, lymph nodes, and mediastinum). The most common sites of occurrence for distant infections were lymph nodes (41%, 19/46), followed by lungs (15%, 7/46).
3.6. Immunological Characteristics. Peripheral leukocyte subsets and immunoglobulin levels were analyzed in most of the patients in this study (Table 3). White blood cell (WBC) counts were high in most of the patients (88%, 42/48), while the remaining 6 patients (12%) had normal counts. Likewise, neutrophils were elevated in most of the patients (92%, 44/48). Respiratory burst activation in neutrophils was measured in most of the patients in this study (34/48, 71%), and all of them had significantly lower neutrophil oxidative function compared to healthy controls. Besides, although the percentages of lymphocytes were present in normal range in most of the CGD patients (73%, 35/48), the counts of lymphocytes were high in over half of patients (52%, 25/48). T cells, B cells, and NK cells were reported to be normal in most of the patients tested, with a percentage of 98%, 93%, and 93%, respectively. In addition, high serum IgG levels were found in most of the patients (88%, 42/48). IgG levels were normal in the other 6 patients.
3.7. Genetic Analysis. Genetic analyses were performed in all of the 48 CGD patients in the present study. 39 mutations were found in 48 patients, including 36 mutations in CYBB gene, 1 mutation in CYBA gene, 1 mutation in NCF1 gene, and 1 mutation in NCF2 gene.
For CYBB gene, 17 missense, 5 nonsense, 7 deletion, 1 insertion, and 6 splicing error mutations were identified. Among them, 11 novel mutations were reported, including 5 missense mutations (c.376T>C in P15, c.1414G>A in P17 c.1328G>A in P20, c.911C>G in P28 and c.184T>A in P30), 3 deletions (c.616delT in P19, c.218delG in P24 and c.185_186delTC in P33), 1 insertion (c.1206_1208insGGT in P1), and 2 splicing errors (c.1315A>G in P22 and c. [898-2_902 AGGTGGTdel] in P32). A female carrier of X-linked CGD (P17) was found to have a heterozygous mutation in CYBB gene (c.1414G>A). The frequency of the A variant at c.1414 in CYBB gene is 2.1%o in 1000 genomes and 6.3%o in Chinese Han population. The female patient with this heterozygous mutation in our study had defective NADPH oxidase activity and clinical symptoms consistent with CGD. Further exon sequencing was done in this patient, but no other CGD-related gene mutations was found. These above indicated that the G to A transition at position 1414 in CYBB gene and an extremely skewed X-inactivation event resulted in CGD phenotype in this female patient.
One patient was found to have CYBA gene mutation. A homozygous missense mutation (c.7C>T), which has been reported in other CGD patients in China previously, was also identified in P37 in our study. P41 was found to have a compound heterozygous mutation in NCF1 gene (c. [541delG; 923T>C]). In the NCF2 gene, a homozygous missense mutation (c. 550C>T) was found in P43 (Table 5).
4. Treatment and Outcome
In our PIDs center, all the patients were recommended to have preventive treatment with cotrimoxazole and itraconazole to prevent bacterial and fungal infections. IFN-[gamma] therapies were used when the CGD patients had severe infections. Only 13% patients (6/48) had ever received IFN-[gamma] treatment. Administrations of IFN-[gamma] were reported to be effective in reducing infections in 67% patients (4/6, P7, P19, P28, and P33). By the end of this study, 4 CGD patients had been treated with haematopoietic stem cell transplantation (HSCT). One patient (P30) died because of serious infections after transplantation; the other 3 patients (P10, P19, and P34) were still alive at the time of inclusion.
CGD is a rare primary immunodeficiency, which is characterized by the defect in phagocyte respiratory burst oxidase and thus recurrent infections [6, 20, 34, 35]. The incidence of CGD varied between countries. However, there was no national PID registration system in China and therefore no reliable prevalence data on Chinese CGD patients. Until now, a total of 205 CGD patients (48 patients in this study and 157 patients published previously) were reported from Mainland China. Most of the cases (86%, 176/205) were from four major PID centers in Mainland China, including 48 patients from our center, 38 from center 2 , 48 from center 3 [16, 20] and 42 from center 4 [21-30]. If we calculated according to the China population of 1, 360, 000, 000 persons and the incidence of CGD in Japan (1/300, 000) and the United States (1/200, 000), an estimate of approximately 4533 and 6800 persons with diagnosed CGD in China. However, there were only 205 CGD patients were reported from Mainland China, which were far less than other countries. This indicated that CGD patients might be underdiagnosed in China. The imbalance of medical resources in China and the lack of recognition of PID in primary hospitals may contribute to the underdiagnosis of CGD. Furthermore, for the proportion that CGD accounting for PIDs, it was 14% in Japan , 9% in the United States  and 6% in Taiwan . In our single center study, there were 48 patients diagnosed with CGD, accounting for 8% in 575 PIDs patients, similar with the United States, while the proportion was 4% (5/138) in another single center study in Mainland China . Unfortunately, it is hard for us to estimate the national prevalence data on CGD because of lacking reliable data, and further work is still needed to clarify it.
The first CGD case reported in Mainland China was in 1981 without gene analysis , while most of patients were diagnosed after 2004. This indicated that people gradually paid more attention to PID in China.
According to the previous CGD cohort studies from other countries, XL-CGD caused by CYBB gene mutations accounted for about 70% CGD cases. For instance, XL-CGD accounted for 74% CGD in Japan, 74% in the United States  and 68% in European series [11, 12]. However, the proportion did not apply to the regions where consanguineous marriage was permitted, such as Turkey and Iran [32, 40]. The high rate of consanguineous marriage led to a higher rate of AR-CGD. In our single center study, XL-CGD subgroup accounted for 75% cases, similar with other single center studies in China (79% in Center 2 and 65% in Center 3) (Table 6). Besides, the ratio of male to female was 11: 1 in this study, similar with all the 205 CGD patients in Mainland China (12: 1; 189 male and 16 female). However, the ratio of male to female patients was higher in the United States (6.08: 1; 316 male and 52 female)  and Japan (6.6: 1; 199 male and 30 female) . This indicated that female CGD patients were underdiagnosed in Mainland China. The reasons for the underdiagnosis for female may be as follows. (1) There was a bias for Chinese physicians towards boys as increased risk of being CGD. (2) Most of female patients were AR-CGD patients, and Chinese physician had insufficient recognition of AR-CGD, which occurred not only in the primary hospital, but also in the tertiary hospital. In addition, in our single center study, 28% patients had positive family histories. For all the 205 CGD patients reported in Mainland China, 33 patients were excluded because of lacking reliable information from the published paper; of the remaining 172 patients, 47 patients (27%) had positive family histories, similar with our single center study.
In our single center study, the mean age at onset/diagnosis was 3.48/26.88 months old. There was a long diagnosis lag between the onset and diagnosis of this disease (Figure 1). For all the patients from Mainland China, 198 had available information about onset age, with a mean age of 4.73 months old; 200 patients had available information about diagnosis age, with a mean age of 29.69 months old, similar with our single center study. However, both of the mean onset and diagnosis age in CGD patients from other countries were later than Chinese patients [10, 11, 41]. A possible explanation was that BCG vaccinations were given routinely to all Chinese newborns at birth as part of the National Vaccination Programs. CGD patients were susceptible to BCG infections thus had early onsets. Besides, as a developing country, the serious environment pollutions in China might also contribute to the early onsets in CGD patients. Furthermore, almost all CGD patients reported in Mainland China were children, and there was an obvious bias for Chinese physicians towards children, especially boys as increased risk of being CGD. This bias not only made the female and adult CGD patients underdiagnosed but also lowered the mean age at onset and diagnosis. Finally, milder clinical course in NCF1 mutant patients and the insufficient recognition of NCF1 mutant patients in Chinese physicians made the statistical data on onset and diagnosis age earlier.
It has been reported that mutations in NCF1 gene led to milder course and later age at onset of CGD; however, the other autosomal forms of this disease were as serious as the X-linked form . In fact, because NCF1 mutant patients accounted for majority of AR-CGD patients, and many studies have showed that XL-CGD patients had earlier age at onset and diagnosis [11, 41]. However, onset/diagnosis age in XL-CGD and AR-CGD had no significant difference in our single center study. The reasons for the difference were probably as follows: (1) statistical limitation because of the small samples and (2) the underdiagnosis of NCF1 mutant patients. Only patients with severe clinical manifestations were diagnosed at early ages, while many patients with milder clinical manifestations were not, which made the average age at onset and diagnosis in NCF1 mutant patients earlier. Besides, 22% of patients died up to the time of inclusion in this study, little higher than Italy and Europe (13% and 20%, resp.). However, the median age at death was 1 year old in this study, significantly lower than Italy and Europe (8.8 and 10.4 years old, resp.) [11, 41]. This reminds us that more efforts are still needed to improve the outcomes of CGD patients in Mainland China.
CGD patients were reported to suffer from recurrent and even life-threatening infections . Infections which occurred in CGD patients from 4 major PID centers in Mainland China were summarized in Table 2. Similar with previous reports, the infectious sites of this disease were mostly lung, gastrointestinal tract, skin/subcutis, and lymph nodes in Chinese patients. However, for the incidence of different infections, there were still some differences between different centers. For example, the incidence of pneumonia was 73% in our study, while it is 84% in center 2, 92% in center 3, and 81% in center 4, respectively.
Lung was the most common infectious site reported in all 4 center studies. Of the lung infections, pneumonia was the most prominent infection observed in our single study. Pneumonia was also the most common infection reported in other 3 PID center studies, with an incidence of 84% in center 2, 92% in center 3, and 81% in center 4, respectively. "Sampling bias" was the likely explanation for the different incidence between different studies. For all 176 CGD patients from 4 PID centers, the incidence of pneumonia was about 82%, similar with United States and Japan (with an incidence of 79% and 88%, resp.) [10, 13]. However, pneumonia was less commonly reported in some European countries, with an incidence of 67% in Germany , 47% in Italy [11, 41], and [less than or equal to] 66% in European series  (Table 2). Fungal pneumonia, which was reported in CGD patients from other countries [10, 11], was also reported in this study. However, the fungal pathogens detection rate was low in this study. Aspergillus spp. were only isolated from 1 case. In fact, Aspergillus spp. were reported to be the most common microorganism isolated from CGD patients with pneumonia, with an incidence of 41% in the United States and 18% in Europe series [10, 11]. The low positive pathogenic microorganism detection rate was partially due to delaying or lacking of microorganism detection and low-threshold use of antibiotics in primary hospital in Mainland China. Besides, 14% patients were reported to suffer from pulmonary tuberculosis in this study, similar with center 3 ([greater than or equal to] 21%) and center 4 (14%) . However, the incidence of pulmonary tuberculosis was very high in center 3 (55%)  (Table 2). In fact, our center and center 3 were both located at Shanghai; center 4 was located at Beijing. Both of the cities had special hospitals to receive patients with pulmonary tuberculosis, and patients with pulmonary tuberculosis had to be transferred to these hospitals, which was the probable explanation for the lower case finding in these 2 cites. Lung abscess, another type of lung infection, which was reported in CGD patients previously, was not found in this study and was rarely found in other studies in China. It was also less reported in some western countries (3% in Italy and 6% in European series) [11, 41]. However, a considerable number of patients (16%) suffered from lung abscess in the United States  (Table 2).
After the lung infections, GI disease was also very common in this study. It was also commonly reported in other studies (40% in center 4 and 48% in Europe). For perianal abscess, 48 patients from center 2 had no available data from the published paper. Of the remaining 138 patients from the other 3 PID center studies, the incidence of perianal abscess was 28% (39/138), which was higher than United Kingdom and Ireland (15%), Italy (8%), and European series (21%) [11, 41, 43]. Likewise, Chinese CGD patients had higher risk of getting diarrhea. Notably, although liver abscess was reported to affect quite a number of CGD patients (46% in Japan , 27% in the United States, and 32% in European series), it was less reported in Chinese CGD patients (Table 2). The reasons for the low incidence were still to be determined. Another frequent clinical manifestation of CGD, lymphadenitis, was also commonly observed in our study (51%), most of which (80%) were cause by BCG infections. The incidence of lymphadenitis was similar in different studies (Table 2).
Skin/subcutis infections were commonly reported in our study, similar with other Chinese single center studies (46% in center 3 and 40% in center 4), the United States (42%), and Europe (53%). Skin abscess was the most predominant skin infection in CGD patient in our single center study. However, the incidence of skin abscess varied between different Chinese single center studies, accounting for 42% in center 2, 23% in center 3, and 5% in center 4, respectively. The average incidence in 4 PID centers was 23% (40/176), which was similar with European series (17%) and Italy (20%) [11, 41] (Table 2).
Septicopyemia was also commonly observed in CGD patients previously, and it was an important cause of death. In our single center study, 3 of 9 patients died due to septicopyemia, similar with the United Kingdom and Ireland (18%) and European series (20%) [11, 43]. Another type of severe infections, osteomyelitis, was reported to occurred in a significant number of CGD patients previously (with the incidence of 25%, 13% and 16% in the United Kingdom and Ireland, Europe and Italy, resp.) [11, 41, 43], was less reported in Chinese CGD patients. Besides, brain abscess, which occurred in 3% CGD patients in the United States and 7% in the European series, was also rarely observed in Chinese CGD patients (Table 2).
China has a serious epidemic of TB. According to a national survey of tuberculosis prevalence in 2000, the incidence of TB in China was 367 in 100, 000 person. In fact, routine BCG vaccination in many countries with TB burden is compulsory. In China, all newborns must be given BCG vaccination at birth. A markedly high incidence of BCG disease in our cohort study was observed. BCG disease was also commonly reported in other CGD cohort studies, with an incidence of 53% (17/32) in center 2, 47% (8/17) in Hong Kong, and 65% (22/34) in France [11, 15]. This high incidence of BCG disease was due to the defective respiratory burst of neutrophils in CGD patients. In addition, CGD patients were reported to be susceptible to TB. In our study, 41% patients suffered from TB, similar with another 2 Chinese cohort studies (55% in center 2 and 41% in Hong Kong) .
Summary of inheritance pattern of CGD patients in different large cohorts was shown in Table 6. Although mutation detection rate varied in different countries because of different healthcare level and genetic sequencing technology, it is clear that XL-CGD patients caused by gp91phox deficiency made up majority of CGD patients, ranging from 65% to 70%. Up to date, 718 different kinds of mutations in CYBB gene were reported in HGMD data base (http://www.hgmd.cf.ac.uk/ac/gene.php?gene=CYBB). In Mainland China, a total of 89 different CYBB gene mutations were reported in 138 patients, including 36 patients in this study and 102 patients published previously in English and Chinese versions. Of them, mutations in 15 patients were not included because of lacking detailed mutation information from the published papers; the other 123 mutations in CYBB gene were summarized in Table 4. 36 missense, 21 nonsense, 36 splicing error, 29 deletion and 1 insertion mutations were included. These mutations were showed to be distributed over almost all exons, and the most distributed exon was exon 9, followed by exon 6. No mutation was found in exon 4. Missense, splicing error, deletion, and nonsense mutations were common mutation types found in Mainland China, accounting for 30%, 30%, 24%, and 17%, respectively, which was similar with other reports. However, insertion mutations, which were commonly reported in other CGD cohort studies, were less found in Mainland China . In addition, gross deletions were found in 8 patients, including 5 whole CYBB gene deletions. Notably, a female CGD patient with CYBB gene mutation was reported in our study, which is the first report of female CGD patient with [gp91.sup.phox] deficiency in Mainland China (Table 4).
In regard to the AR-CGD, which is mostly caused by CYBA, NCF1, and NCF2 gene mutations, they accounted for about 30% CGD cases according to the previous study from western countries . However, AR-CGD was less reported in Mainland China. Up to now, only 6 patients with CYBA gene mutations, 5 patients with NCF1 gene mutations, and 3 patients with NCF2 gene mutations were reported from Mainland China. These mutations were summarized in Table 5. The low case finding rate was possibly because of the insufficient recognition of AR-CGD in Chinese physicians, which made the patients lost the chance to detect gene mutations. Another possible reason was that the consanguineous marriage was strictly forbidden in China, which lowered the prevalence of AR-CGD. With the development of the next sequencing technology in China, a rapid genetic diagnosis becomes realizable, thus greatly promotes genetic diagnosis of PID. In addition, it has been reported that NCF1 gene mutations were the most common causes leading to AR-CGD, which occurred in over 20% CGD in western countries . However, the incidence seems to be lower in Asia countries, with an incidence of 2% and 7% in our study and Japan, respectively . The reason for the different incidences is still to be determined.
CGD was originally termed "fatal granulomatous disease of childhood" , which indicated that it had high lethality. With the development of medical level, the prognosis of CGD have improved over time. At present, it is widely accepted that CGD patients should take lifelong antibacterial and antifungal prophylaxis and interferon gamma (IFN-[gamma]) treatment . In fact, the treatment using INF-r is still controversial. Some studies suggested that IFN-[gamma] could effectively reduce the number and severity of infections, while other studies showed IFN-[gamma] treatment did not reduce the infections [41, 46]. In our single center study, only 6 patients have been treated with IFN-[gamma], and it was effective in 67% of them. However, this was unrepresentative because of the small sample and lackng long-term follow-up study In fact, recombinant human IFN-[gamma] is a very expensive therapeutic agent, which made it difficult to be applied widely. Therefore, the effect of IFN-[gamma] treatment on Chinese CGD patients still need to be determined.
Up to now, HSCT is the only proven curative treatment for CGD . However, because of the high survival rate of CGD patients, high cost of HSCT, relapse, and high risk of infections after HSCT, most patients in our study did not choose HSCT treatment. Similarly, only 3 CGD patients (8%) in another Chinese cohort study received HSCT . Notably, as a single gene disorder, gene therapyis a potential treatment for CGD, which provides new hope for cure of CGD.
We here report 48 CGD patients in our single center study, which is the largest cohort study from Mainland China. 39 gene mutations were identified in 48 patients, including 36 mutations in CYBB gene, 1 mutation in CYBA gene, 1 mutation in NCF1 gene, and 1 mutation in NCF2 gene. CGD patients are susceptible to BCG infections and they should avoid BCG vaccination. The compulsory BCG vaccination for all infants after birth contributes to the early onsets in CGD patients in Mainland China.
Jing Wu is the first author.
The authors declare that there is no conflict of interests regarding the publication of this paper.
The authors appreciate all the blood donors and the nursing staffs for the collection of specimens. This research was supported by grants from National Natural Science Foundation of China (81273314 and 81571605) and Shanghai Municipal Education Commission (14ZZ105).
 H. Berendes, R. A. Bridges, and R. A. Good, "A fatal granulomatosus of childhood: the clinical study of a new syndrome, " Minnesota Medicine, vol. 40, no. 5, pp. 309-312, 1957
 B. H. Landing and H. S. Shirkey, "A syndrome of recurrent infection and infiltration of viscera by pigmented lipid histiocytes, " Pediatrics, vol. 20, no. 3, pp. 431-438, 1957
 D. Roos and M. de Boer, "Molecular diagnosis of chronic granulomatous disease, " Clinical and Experimental Immunology, vol. 175, no. 2, pp. 139-149, 2014.
 M. Esfandbod and M. Kabootari, "Images in clinical medicine. Chronic granulomatous disease, " The New England Journal of Medicine, vol. 367, no. 8, p. 753, 2012.
 B. H. Segal, L. Romani, and P. Puccetti, "Chronic granulomatous disease, " Cellular and Molecular Life Sciences, vol. 66, no. 4, pp. 553-558, 2009.
 W.-J. Ying, X.-C. Wang, J.-Q. Sun, D.-R. Liu, Y.-H. Yu, and J.-Y. Wang, "Clinical features of chronic granulomatous disease, " Chinese Journal of Pediatrics, vol. 50, no. 5, pp. 380-385, 2012.
 J. El-Benna, P M.-C. Dang, M.-A. Gougerot-Pocidalo, and C. Elbim, "Phagocyte NADPH oxidase: a multicomponent enzyme essential for host defenses, " Archivum Immunologiae et Therapiae Experimentalis, vol. 53, no. 3, pp. 199-206, 2005.
 D. Roos, D. B. Kuhns, A. Maddalena et al., "Hematologically important mutations: the autosomal recessive forms of chronic granulomatous disease (second update), " Blood Cells, Molecules, & Diseases, vol. 44, no. 4, pp. 291-299, 2010.
 Y. Gu, B. Jia, F.-C. Yang et al., "Biochemical and biological characterization of a human Rac2 GTPase mutant associated with phagocytic immunodeficiency, " Journal of Biological Chemistry, vol. 276, no. 19, pp. 15929-15938, 2001.
 J. A. Winkelstein, M. C. Marino, R. B. Johnston Jr. et al., "Chronic granulomatous disease. Report on a national registry of 368 patients, " Medicine, vol. 79, no. 3, pp. 155-169, 2000.
 J. M. van den Berg, E. van Koppen, A. Ahlin et al., "Chronic granulomatous disease: the european experience, " PLoS ONE, vol. 4, no. 4, Article ID e5234, 2009.
 F. Ishibashi, H. Nunoi, F. Endo, I. Matsuda, and S. Kanegasaki, "Statistical and mutational analysis of chronic granulomatous disease in Japan with special reference to gp91-phox and p22phox deficiency, " Human Genetics, vol. 106, no. 5, pp. 473-481, 2000.
 T. S. Hasui, "Chronic granulomatous disease in Japan: incidence and natural history. The Study Group of Phagocyte Disorders of Japan, " Pediatrics International, vol. 41, no. 5, pp. 589-593, 1999.
 E. B. de Oliveira-Junior, N. B. Zurro, C. Prando et al., "Clinical and genotypic spectrum of chronic granulomatous disease in 71 Latin American patients: first report from the LASID registry, " Pediatric Blood & Cancer, vol. 62, no. 12, pp. 2101-2107, 2015.
 H. Xu, W. Tian, S. J. Li et al., "Clinical and molecular features of 38 children with chronic granulomatous disease in mainland china, " Journal of Clinical Immunology, vol. 34, no. 6, pp. 633-641, 2014.
 W. Ying, J. Sun, D. Liu et al., "Clinical characteristics and immunogenetics of BCGosis/BCGitis in Chinese children: a 6 year follow-up study, " PLoS ONE, vol. 9, no. 4, Article ID e94485, 2014.
 H. Zeng, Y. Tao, X. Chen et al., "Primary immunodeficiency in South China: clinical features and a genetic subanalysis of 138 children, " Journal of Investigational Allergology and Clinical Immunology, vol. 23, no. 5, pp. 302-308, 2013.
 M. E. Conley, L. D. Notarangelo, and A. Etzioni, "Diagnostic criteria for primary immunodeficiencies, " Clinical Immunology, vol. 93, no. 3, pp. 190-197, 1999.
 C. Picard, W. Al-Herz, A. Bousfiha et al., "Primary immunodeficiency diseases: an update on the classification from the international union of Immunological societies expert committee for primary immunodeficiency 2015, " Journal of Clinical Immunology, vol. 35, no. 8, pp. 696-726, 2015.
 W. M. Nauseef, "Assembly of the phagocyte NADPH oxidase, " Histochemistry and Cell Biology, vol. 122, no. 4, pp. 277-291, 2004.
 J.-X. He, Q.-Q. Yin, Y.-J. Tong et al., "Diagnosis and carrier screening of X-linked chronic granulomatous disease by DHR 123 flow cytometry, " Chinese Journal of Contemporary Pediatrics, vol. 16, no. 1, pp. 81-84, 2014.
 J.-X. He, S.-Y. Zhao, and Z.-F. Jiang, "Severe Bacillus Calmette-Guerin lymphadenitis and X-linked chronic granulomatous disease in children, " Chinese Journal of Contemporary Pediatrics, vol. 12, no. 6, pp. 490-493, 2010.
 J.-X. He, S.-Y. Zhao, B.-P. Xu, Y.-H. Hu, K.-L. Shen, and Z.-F. Jiang, "[Clinical features and molecular analysis of 2 Chinese children with autosomal recessive chronic granulomatous disease caused by CYBA mutations], " Zhonghua er ke za zhi. Chinese journal of pediatrics, vol. 49, no. 11, pp. 853-857, 2011.
 J. X. He, Y. J. Guo, X. L. Feng, L. Wang, and B. P. Xu, "Chronic granulomatous disease and Mcleod syndrome caused by continuous X chromosome deletion: a report of two cases and literature review, " Journal of Clinical Pediatric, vol. 34, no. 8, pp. 614-617, 2016.
 J. X. He, J. Liu, X. Y. Liu, B. P. Xu, K. L. Shen, and Z. F. Jiang, "Burkholderia cepacia infections in children with X-linked chronic granulomatous disease, " Chinese Journal of Practical Pediatrics, no. 5, pp. 381-383, 2012.
 J. X. He, J. Yin, X. Y. liu, Y. H. Hu, A. D. Shen, and K. L. Shen, "AGT MUTATION of NCF1 in children with autosomal recessive chronic granulomatous disease, " Chinese Journal of Practical Pediatrics, no. 1, pp. 50-52, 2011.
 J. X. He, J. Yin, X. Y. Liu, S. Y. Zhao, B. P. Xu, and Y. H. Hu, "Invasive aspergillosis in 4 children with chronic granulomatous disease, " Journal of Clinical Pediatric Dentistry, vol. 30, no. 6, pp. 528-530, 2012.
 J. X. He, S. Y. Zhao, and Z. F. Jiang, "Recurrent pulmonary infections in pediatric patients with X-linked recessive chronic granulomatous disease: analysis of 3 cases, " Chinese Journal of Practical Pediatrics, no. 8, pp. 605-608, 2008.
 H. Y. Song, J. X. He, L. M. Fu, S. Y. Qian, andX. P. Zhang, "Sonographic appearance of liver/spleen in children with chronic granulomatous disease, " Chinese Medical Record, vol. 12, no. 4, pp. 4-6, 2011.
 J. Zhao, Y. Peng, and J. X. He, "Chest CT manifesmtiorts of chronic granulomatous disease in children, " Journal of Medical Imaging, vol. 22, no. 3, pp. 359-363, 2012.
 J. Yang, G. B. Wang, J. H. Huang, Y. Zu, Y. B. Li, and D. Fu, "X-linked chronic granulomatous disease family caused by anmino acid missing mutation in the [gp91.sup.phox] of flavocytochrome b558, " Chinese Journal of Obstetrics & Gynecology, vol. 2, no. 3, pp. 137-139, 2006.
 M. Y. Koker, Y. Camcioglu, K. van Leeuwen et al., "Clinical, functional, and genetic characterization of chronic granulomatous disease in 89 Turkish patients, " The Journal of Allergy and Clinical Immunology, vol. 132, no. 5, pp. 1156-1163.e5, 2013.
 A. C. Hesseling, H. Rabie, B. J. Marais et al., "Bacille Calmette-Guerin vaccine--induced disease in HIV-infected and HIV-uninfected children, " Clinical Infectious Diseases, vol. 42, no. 4, pp. 548-558, 2006.
 S. Henriet, P. E. Verweij, S. M. Holland, and A. Warris, "Invasive fungal infections in patients with chronic granulomatous disease, " Advances in Experimental Medicine & Biology, vol. 764, no. 1, pp. 27-55, 2013.
 R. A. Seger, "Advances in the diagnosis and treatment of chronic granulomatous disease, " Current Opinion in Hematology, vol. 18, no. 1, pp. 36-41, 2011.
 M. Ishimura, H. Takada, T. Doi et al., "Nationwide survey of patients with primary immunodeficiency diseases in Japan, " Journal of Clinical Immunology, vol. 31, no. 6, pp. 968-976, 2011.
 J. M. Boyle and R. H. Buckley, "Population prevalence of diagnosed primary immunodeficiency diseases in the United States, " Journal of Clinical Immunology, vol. 27, no. 5, pp. 497-502, 2007
 W.-I. Lee, J.-L. Huang, T.-H. Jaing et al., "Distribution, clinical features and treatment in Taiwanese patients with symptomatic primary immunodeficiency diseases (PIDs) in a nationwide population-based study during 1985-2010, " Immunobiology, vol. 216, no. 12, pp. 1286-1294, 2011.
 L. J. Gu and Y. C. Ye, "A case report of pediatric patient with chronic granulomatous disease, " Current Immunology, vol. 6, no. 1, pp. 33-36, 1981.
 F. Fattahi, M. Badalzadeh, L. Sedighipour et al., "Inheritance pattern and clinical aspects of 93 Iranian patients with chronic granulomatous disease, " Journal of Clinical Immunology, vol. 31, no. 5, pp. 792-801, 2011.
 B. Martire, R. Rondelli, A. Soresina et al., "Clinical features, long-term follow-up and outcome of a large cohort of patients with Chronic Granulomatous Disease: an italian multicenter study, " Clinical Immunology, vol. 126, no. 2, pp. 155-164, 2008.
 J. Liese, S. Kloos, V Jendrossek et al., "Long-term follow-up and outcome of 39 patients with chronic granulomatous disease, " The Journal of Pediatrics, vol. 137, no. 5, pp. 687-693, 2000.
 L. B. K. R. Jones, P. McGrogan, T. J. Flood et al., "Special article: chronic granulomatous disease in the United Kingdom and Ireland: a comprehensive national patient-based registry, " Clinical and Experimental Immunology, vol. 152, no. 2, pp. 211-218, 2008.
 R. A. Bridges, H. Berendes, and R. A. Good, "A fatal granulomatous disease of childhood; the clinical, pathological, and laboratory features of a new syndrome, " AMA Journal of Diseases of Children, vol. 97, no. 4, pp. 387-408, 1959.
 D. Roos, "Chronic granulomatous disease, " British Medical Bulletin, vol. 118, no. 1, pp. 50-63, 2016.
 "A controlled trial of interferon gamma to prevent infection in chronic granulomatous disease. The International Chronic Granulomatous Disease Cooperative Study Group, " The New England Journal of Medicine, vol. 324, no. 8, pp. 509-516, 1991.
Jing Wu, (1,2) Wei-Fan Wang, (1,2) Yi-Dan Zhang, (3) and Tong-Xin Chen (1,2)
(1) Department of Allergy and Immunology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
(2) Division of Immunology, Institute of Pediatric Translational Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
(3) Department of Internal Medicine, The Affiliated Hospital to Changchun University of Chinese Medicine, Changchun 130021, China Correspondence should be addressed to Tong-Xin Chen; firstname.lastname@example.org
Received 29 September 2016; Revised 27 November 2016; Accepted 4 January 2017; Published 30 January 2017
Academic Editor: Alessandra Santos
Table 1: Clinical characteristics of 48 CCD patients in this study. Pts/ Year of Family Onset Diagnosis Status-age sex diagnosis history age (mo) age (mo) (death cause) P1/M 2015 - 0 36 Dead-3 y (severe pneumonia) P2/M 2010 - 2 24 Alive-9 y P3/M 2013 - 1 7 Dead-1 y (TB) P4/M 2014 - 3 17 A live-3 y P5/M 2013 - 3 12 Alive-5 y P6/M 2012 - 0 72 Alive-11 y P7/M 2014 - 2 48 Alive-7 y P8/M 2005 - 0 72 Alive-17 y P9/M 2013 - 2 7 A live-3 y P10/M 2010 + 2 3.5 Alive-7 y P11/M 2014 - 0 24 Alive-4 y P12/M 2015 - 1 36 Alive-4 y P13/M 2007 - 0.93 36 Dead-4 y (osteomyelitis) P14/M 2011 - 2 36 Alive-9 y P15/M 2012 - 6 24 Alive-7 y P16/M 2015 - 1 3 Alive-l y P17/F 2015 - 3 48 Alive-5 y P18/M 2015 - 0.67 1 Alive-1 y P19/M 2014 - 3 6 A live-3 y P20/M 2012 + 0 2 Alive-4 y P21/M 2014 - 3 18 Alive-4 y P22/M 2011 + 1 10 Alive-6 y P23/M 2011 + 1 2 Dead-1 y (septicopyemia) P24/M 2012 - 2 18 Alive-6 y P25/M 2009 + 2 4 Dead-1 y (septicopyemia) P26/M 2008 + 0.33 1 Alive-9 y P27/M 2009 + 0.1 2 Alive-8 y P28/M 2011 - 24 180 Alive-20 y P29/M 2013 - 1 6 Dead-0.5 y (septicopyemia) P30/M 2008 + 0.67 3 Dead-0.5 y (infections after HSCT) P31/M 2009 - 2 24 Alive-9 y P32/M 2013 - 0.5 1 A live-3 y P33/M 2010 + 3 132 Dead-13 y (severe pneumonia) P34/M 2015 + 0 48 Alive-6 y P35/M 2012 NA 0.07 6.63 Dead-1 y (liver abscess) P36/M 2007 - 24 60 Dead-6y (NEC) P37/M 2014 - 4 8 Alive-2 y P38/M 2013 3 12 Alive-4 y P39/F 2010 + 0 24 Alive-8 y P40/M 2011 42 48 Alive-9 y P41/F 2014 - 0.67 6 A live-3 y P42/M 2014 + 3 60 Alive-7 y P43/M 2005 - 1 1.5 Alive-11 y P44/M 2011 - 2 24 Alive-7 y P45/F 2011 0.4 0.83 Alive-5 y P46/M 2007 + 0.5 12 Alive-10 y P47/M 2007 - 3 5 Dead-1 y (severe pneumonia) P48/M 2009 - 0.67 2 Alive-7 y Pts/ Lung Skin sex Pneumonia TB Pustular Skin eruption abscess P1/M + - + - P2/M - - - - P3/M - + - - P4/M + + - - P5/M + - - + P6/M + + - - P7/M + - - + P8/M + + + - P9/M + - - - P10/M - - - - P11/M + - - + P12/M - - + - P13/M + - - - P14/M + - - - P15/M + - - - P16/M - - + - P17/F + - - - P18/M + - - - P19/M + - - - P20/M + - + - P21/M + + - - P22/M - - - + P23/M + - - - P24/M + - - - P25/M - - - - P26/M + - + - P27/M - - + - P28/M + + - + P29/M + - - - P30/M - - + - P31/M + - - - P32/M + - - + P33/M + - - - P34/M - + - - P35/M + - - - P36/M + - - 1 P37/M + - - - P38/M + + P39/F - - - + P40/M P41/F 1 - - 1 P42/M + - - - P43/M + - - + P44/M + - - - P45/F - - + - P46/M + - + - P47/M + - - - P48/M + - - Pts/ Type of infections sex Digestive system Perianal Diarrhea Liver Lymphadenitis Septicopyemia abscess abscess Pl/M + - - + - P2/M - - - - - P3/M - - - + - P4/M - + - + + P5/M + + - - + P6/M + + - + - P7/M + - - - - P8/M - - - + - P9/M - - - - - P10/M - + - - + P11/M - - - + - P12/M - - - + - P13/M - - + - - P14/M - - - + - P15/M - + - - - P16/M + + - - - P17/F - - - + - P18/M - - - - + P19/M - + - + - P20/M + - - - + P21/M - - + + - P22/M + + - - - P23/M + + - - + P24/M + - - + - P25/M + - - - - P26/M - + - + - P27/M + - - - - P28/M + - - + - P29/M + + - + + P30/M - - - + - P31/M + - + + + P32/M - - - - - P33/M - - - + - P34/M - - - + - P35/M + + - + - P36/M - 1 - + + P37/M - - - - - P38/M + + + P39/F - - - - - P40/M + P41/F - - - - P42/M 1 - - + - P43/M - - - - - P44/M - - - - - P45/F - - - - - P46/M + + + - - P47/M - - - + - P48/M - - - - Pts/ BCG disease sex Other symptoms Regional Distant Disseminated SI Pl/M UTI, HSM + + - ND P2/M Left renal - - - ND abscess, left hydronephrosis, hypospadias P3/M ASD, PDA + + - 18 P4/M Mild anemia, - + - 1.27 eczema, EBV infection, eosinophilia, otitis media P5/M Moderate anemia, - - - ND skin granulomas, P6/M HSM HSM, thrush + + - 2.95 P7/M Recurrent + - - 4.57 URI, HSM P8/M HSM + + + ND P9/M PFO - - - ND P10/M Mild anemia, - - - 1.41 eczema, Kawasaki disease, Thrush, ventricular septal defect Pll/M Vitamin K + + - ND deficiency P12/M HSM - + - ND P13/M Osteomyelitis, + - - 0.76 urticaria, eczema, thrush P14/M Orbital + + - 0.96 cellulitis, dacryocystitis, skin granulomas, otitis media, HSM P15/M Moderate anemia, - - - 3 recurrent URI, thrush P16/M HSM NA NA NA ND P17/F AR, MS, AH, AN, - - - 24.64 moderate anemia, EBV infection P18/M Severe NA NA NA ND malnutrition, myocardial injury, NH, purulent meningitis, HM P19/M Mild anemia, HSM - + - 0 P20/M ASD, HSM - - - ND P21/M HSM, recurrent URI - + + 0 P22/M Testicular - - - 0.86 abscess, otitis media, thrush recurrent URI, HM P23/M HM - - - 0.94 P24/M Hydrocele, heart + - - ND failure, PFO, thrush P25/M HSM - - - 0.77 P26/M HSM, mild anemia + + - 0.74 P27/M Eczema, - - - 1.59 brain edema, encephalitis, HM P28/M Behcet's + + - ND disease, thrush P29/M HSM, mild anemia - + - 2.73 P30/M HSM - - - 1.99 P31/M Renal cyst, mild - + - 0 anemia, skin granulomas, HSM P32/M - - - 4.25 P33/M Eczema, thrush + + - 0.72 P34/M Hypokalemia + + - 3 P35/M HM + + - 2.75 P36/M HM, recurrent - - - 16.70$ URI, thrush P37/M HSM, CHD, NA NA NA ND recurrent URI HSM, moderate anemia, P38/M Kawasaki disease, 24.67 otitis media P39/F HM, eczema, liver + - - 3.62 function damage P40/M Eczema Skin 1.83 P41/F granulomas, - - - 6.15 splenic abscess P42/M Mild anemia, + + - ND tonsillar enlargement, BO, thrush P43/M - - - 4.27 P44/M - - - 5.43 P45/F Omphalitis - - - 2.62 P46/M HM + - - 1.99 P47/M HSM, eczema, - + - 40.15 umbilical hernia P48/M Thrush - - - 0.94 Pts: patients; mo: month; TB: tuberculosis; BCG: Bacille Calmette-Guerin; UTI: urinary tract infection; ASD: atrial septal defect; PDA: patent ductus arteriosus; EBV: Epstein-Barr virus; PFO: patent foramen ovale; URI: upper respiratory infection; AR: allergic rhinitis; MS: maxillary sinusitis; AH: adenoid hypertrophy; AN: acanthosis nigricans; NH: neonatal hyperbilirubinemia; CHD: congenital heart disease; BO: bronchiolitis obliterans; HGM: hepatosplenomegaly; HM: hepatomegaly; NEC: necrotic enterocolitis; ND: not determined; NA: not available; SI: stimulation index. $ Besides the DHR assay P37 also did 2 times of nitroblue tetrazolium (NBT) tests, and both of the results were 0%. Table 2: Summary of infections in CGD patients from 4 major PID centers in Mainland China and 2 large cohort studies from other countries. Infections This study Center 2 Center 3 n = 48 (%) n = 38 (%) n = 48 (%) Lung 37 (77%) -- 44 (92%) Pneumonia 35 (73%) 32 (84%) 44 (92%) Lung abscess 0 -- 4 (8%) Tuberculosis 7 (15%) 21 (55%) [greater than or equal to] (21%) GI tract 26 (54%) -- -- Diarrhea/enteritis 15 (31%) 14 (37%) 31 (65%) Perianal abscess 18 (38%) -- 13 (28%) Liver abscess 4 (8%) -- >3 (6%) Cutaneous/ 22 (46%) -- 22 (46%) subcutaneous infections Pustular eruption 10 (21%) -- 9 (19%) Skin abscess 11 (23%) 16 (42%) 11 (23%) Lymphadenitis 24 (50%) 16 (42%) 31 (65%) Septicopyemia 11 (23%) -- -- UTI 1 (2%) -- 3 (6%) Bone 2 (4%) -- 2 (4%) Osteomyelitis 1 (2%) -- 1 (2%) Bone tuberculosis 1 (2%) -- 1 (2%) CNS 2 (4%) -- -- Meningitis 1 (2%) -- -- Brain abscess 0 -- -- Autoimmunity- 3 (6%) -- -- rheumatology Infections Center 4 USA  Europe  n = 42 (%) n = 368 (%) n = 429 (%) Lung 41 (98%) -- 284 (66%) Pneumonia 34 (81%) 290 (79%) -- Lung abscess 1 (2%) 60 (16%) 24 (6%) Tuberculosis 6 (14%) -- -- GI tract 17 (40%) -- 208 (48%) Diarrhea/enteritis 7 (17%) -- 55 (13%) Perianal abscess 9 (21%) 57 (15%) 88 (21%) Liver abscess 1 (2 %) 98 (27%) 138 (32%) Cutaneous/ 17 (40%) 156 (42%) 229 (53%) subcutaneous infections Pustular eruption 9 (21%) -- -- Skin abscess 2 (5%) -- 74 (17%) Lymphadenitis 26 (62%) 194 (53%) 213 (50%) Septicopyemia 16 (38%) 65 (18%) 85 (20%) UTI 1 (2%) 52 (12%) Bone 0 56 (13%) Osteomyelitis 0 90 (25%) 56 (13%) Bone tuberculosis 0 -- -- CNS 6 (14%) -- -- Meningitis 5 (12%) 15 (4%) -- Brain abscess 1 (2%) 12 (3%) 31 (7%) Autoimmunity- -- 18 (5%) 26 (6%) rheumatology GI: gastrointestinal; UTI: urinary tract infection; CNS: central nervous system. 38 patients from center 2 were reviewed from 1 paper published in English version . 48 patients from center 3 were reviewed from 1 paper published in English version and 1 in Chinese version [16, 20]. 42 patients from center 4 were reviewed from 10 papers published in Chinese version [21-30]. Table 3: Immunologic investigations in CGD patients in the present study. Patients Normal Low High tested (n) (n/%) (n/%) (n/%) WBC (109 white blood cells/L) 48 6/13 0/0 42/88 Neutrophils (%) 48 2/4 2/4 44/92 Neutrophils (109 neutrophils/L) 48 4/8 0/0 44/92 Lymphocytes (%) 48 35/73 10/21 3/6 Lymphocytes (109 lymphocytes/L) 48 18/38 5/10 25/52 Eosinophils (%) 48 26/54 20/42 2/4 Eosinophils (109 eosinophils/L) 48 29/60 19/40 0/0 CD3 T lymphocytes (%) 46 45/98 0/0 1/2 CD4 T lymphocytes (%) 46 38/83 7/15 1/2 CD8 T lymphocytes (%) 46 44/97 1/2 1/2 B lymphocytes (%) 46 43/93 2/4 1/2 NK lymphocytes (%) 46 43/93 0/0 3/7 IgG levels (g/L) 48 0/0 6/13 42/88 IgA levels (g/L) 48 35/73 11/23 2/4 IgM levels (g/L) 48 44/92 1/2 3/6 IgE levels (g/L) 42 32/76 0/0 10/24 Table 4: Summary of CYBB gene mutations reported in Mainland China. Pts Mutation type Exon/intron number P1 Insertion Exon 10 P2 Missense Exon 12 P3 Missense Exon 5 P4 Missense Exon 9 P5 Missense Exon 3 P6 Missense Exon 9 P7 Nonsense Exon 7 P8 Splicing error Intron 3 P9 Deletion Exons 6-8 P10 Missense Exon 6 P11 Missense Exon 7 P12 Missense Exon 6 P13 Deletion Exon 10 P14 Splicing error Intron 8 P15 Missense Exon 5 P16 Missense Exon 12 P17 Missense Exon 11 P18 Missense Exon 5 P19 Deletion Exon 6 P20 Nonsense Exon 11 P21 Splicing error Intron 3 P22 Splicing error Exon 11 P23 Deletion Exon 10 P24 Deletion Exon 3 P25 Missense Exon 12 P26 Nonsense Exon 7 P27 Nonsense Exon 11 P28 Missense Exon 9 P29 Nonsense Exon 8 P30 Missense Exon 3 P31 Splicing error Intron 5 P32 Splicing error Intron 8, exon 9 P33 Deletion Exon 3 P34 Missense Exon 6 P35 Deletion Exons 1-13 P36 Missense Exon 6 P49 Missense Exon 1 P50 Splicing error Intron 1 P51 Splicing error Intron 1 P52 Splicing error Exon 2 P53 Deletion Exon 2 P54 Deletion Exon 2 P55 Missense Exon 3 P56 Splicing error Exon 3 P57 Splicing error Exon 3 P58 Splicing error Intron 3 P59 Splicing error Intron 3 P60 Splicing error Intron 3 P61 Splicing error Intron 3 P62 Splicing error Intron 3 P63 Splicing error Intron 3 P64 Splicing error Intron 3 P65 Splicing error Intron 3 P66 Splicing error Intron 4 P67 Deletion Exon 5 P68 Nonsense Exon 5 P69 Nonsense Exon 5 P70 Splicing error Exon 5 P71 Nonsense Exon 5 P72 Splicing error Intron 5 P73 Splicing error Intron 5 P74 Splicing error Intron 5 P75 Deletion Exon 6 P76 Deletion Exon 6 P77 Missense Exon 6 P78 Nonsense Exon 6 P79 Missense Exon 6 P80 Missense Exon 6 P81 Splicing error Exons 5, 6 P82 Splicing error Intron 6 P83 Splicing error Intron 6 P84 Splicing error Intron 6 P85 Nonsense Exon 7 P86 Nonsense Exon 7 P87 Nonsense Exon 7 P88 Nonsense Exon 7 P89 Nonsense Exon 7 P90 Nonsense Exon 7 P91 Deletion Exon 7 P92 Splicing error Intron 7 P93 Nonsense Exon 8 P94 Deletion Exon 8 P95 Splicing error Intron 8 P96 Missense Exon 9 P97 Deletion Exon 9 P98 Missense Exon 9 P99 Missense Exon 9 P100 Missense Exon 9 P101 Deletion Exon 9 P102 Deletion Exon 9 P103 Missense Exon 9 P104 Missense Exon 9 P105 Missense Exon 9 P106 Deletion Exon 9 P107 Nonsense Exon 9 P108 Deletion Exon 9 P109 Deletion Exon 9 P110 Splicing error Exon 9/intron 9 P111 Splicing error Exon 9/intron 9 P112 Splicing error Exon 10 P113 Deletion Exon 10 P114 Deletion Exon 10 P115 Deletion Exon 10 P116 Missense Exon 10 P117 Missense Exon 10 P118 Missense Exon 10 P119 Splicing error Intron 10 P120 Splicing error Intron 10 P121 Splicing error Intron 10 P122 Nonsense Exon 11 P123 Nonsense Exon 11 P124 Deletion Exon 11 P125 Missense Exon 11 P126 Missense Exon 11 P127 Nonsense Exon 11 P128 Nonsense Exon 11 P129 Missense Exon 12 P130 Missense Exon 13 P131 Deletion Exons 7-11 P132 Deletion Exons 1-13 P133 Deletion Exons 1-13 P134 Deletion Exons 1-13 P135 Deletion Exons 1-13 Pts Nt. change AA. change Reference number P1 c.1211_1213dupGGT# p.V404dup This study P2 c.1498G>A p.D500N This study P3 c.466G>A p.A156T This study P4 c.1085C>T p.T362I This study P5 c.176G>T p.C59F This study P6 c.1014C>A p.H338Q This study P7 c.676C>T p.R226X This study P8 c.253-1G>A skip exon 4 ? This study P9 c.484-?_897+?del exon 6_8del This study P10 c.626A>G p.H209R This study P11 c.731G>A p.C244Y This study P12 c.626A>G p.H209R This study P13 c.1314delG p.I439SfsX62 This study P14 c.898-1G>A skip exon 9 ? This study P15 c.376T>C # p.C126R This study P16 c.1499A>G p.D500G This study P17 c.1414G>A # p.G472S This study P18 c.389G>C p.R130P This study P19 c.616delT # p.W206GfsX7 This study P20 c.1328G>A # p.W443X This study P21 c.252+1G>C skip exon 3 ? This study P22 c.1315A>G # skip exon 11 ? This study P23 c.1313_1314 delAGinsT p.K438IfsX63 This study P24 c.218delG # p.R73QfsX34 This study P25 c.1498G>A p.D500N This study P26 c.676C>T p.R226X This study P27 c.1437C>A p.Y479X This study P28 c.911C>G # p.P304R This study P29 c.868C>T p.R290X This study P30 c.184T>A # p.F62I This study P31 c.483+1G>A skip exon 5 ? This study P32 c. [898-2.902 AGGTGGTdel] # skip exon 9 ? This study P33 c.185_186delTC # p.F62X This study P34 c.613T>A p.F205I This study P35 c. (1-?.1710+?)del exon 1-13.del This study P36 c.577T>C p.S193P This study P49 c.1A>G p.M1V  P50 c. 46-2A>G skip exon 2 ?  P51 c. 46-2A>G skip exon 2  P52 c.46_92del 47 bp c.91C>A p.L16RfsX2  P53 c. c.77_78delTT p.F26CfsX7  P54 c.91.92delCG p.R31GfsX2  P55 c.162G>C p.R54S  P56 c.252G>A skip exon 3  P57 c.252G>A skip exon 3  P58 c.252+2dupT skip exon 3 ?  P59 c.252+2dupT skip exon 3 ?  P60 c.252+5G>A skip exon 3 ?  P61 c.252+5G>A skip exon 3 ?  P62 c. 252+5G>A skip exon 3  P63 c. 252+5G>A skip exon 3  P64 c.253-3A>G p.C85SfsX24  P65 c.253-3A>G p.C85SfsX24  P66 c.337+1G>A skip exon 4  P67 c.345_346delCA p.T116HfsX5  P68 c.370G>T p.E124X  P69 c.388C>T p.R130X  P70 c.483-484ins115 bp p.K161VfsX12  c.[338_483del146bp; p.A113QfsX2 484_674del191bp] P71 c. 469C>T p.R157X  P72 c.483+1G>A skip exon 5  P73 c.483+1G>C skip exon 5  P74 c.483+1delG p.A113DfsX16  P75 c.565_568delATTA p.I189SfsX23  P76 c.565_568delATTA p.I189SfsX23  P77 c.577T>C p.S193P  P78 c.603C>G p.Y201X  P79 c.626A>G p.H209R  P80 c.665A>G p.H222R  P81 c.338_674del; p.A113DfsX16  c.484_674del p.N162Tfsx14 P82 c.484_804del321 bp p.N162_M268del  P83 c.674+6T>C skip exon 6 ?  P84 c.674+1336 T>G; p.R226YfsX18  c.675-676ins81 bp P85 c.676C>T p.R226X  P86 c.676C>T p.R226X  P87 c.676C>T p.R226X  P88 c.676C>T p.R226X  P89 c.676C>T p.R226X  P90 c.676C>T p.R226X  P91 c.725_726delCA p.T242SfsX2  P92 c.805-1G>T skip exon 8 ?  P93 c.868C>T p. R290X  P94 c.871_881del p.S291GfsX52  P95 c.898-1G>A skip exon 9 ?  P96 c.935T>A p.M312K  P97 c.965delG p.G322DfsX20  P98 c.965G>A p.G322E  P99 c.1012C>T p.H338Y  P100 c.1016C>A p.P339H  P101 c.1078delG p.D360TfsX25  P102 c.1078delG p.D360TfsX25  P103 c.1081T>C p.W361R  P104 c.1082G>T p. W361L  P105 c.1082G>T p. W361L  P106 c.1095delG p.F366SfsX19  P107 c.1120C>T p. Q374X  P108 c.1123delG p.E375SfsX10  P109 c.1123delG p.E375SfsX10  P110 c.1150_1151+2delAAGT skip exon 9 ?  P111 c.1150_1151+2 delAAGT skip exon 9 ?  P112 c.1152G>C skip exon 9 ?  p.K384N P113 c.1170delC p.F391LfsX13  P114 c.1177delA p.T393LfsX12  P115 c.1177delA p.T393LfsX12  P116 c.1234G>A p.G412R  P117 c.1234 G>A p.G412R  P118 c.1235G>A p.G412E  P119 c.1151+2dupT skip exon 10  P120 c.1315-2A>C skip exon 11?  P121 c.1315-2A>C skip exon 11?  P122 c.1320C>A p.Y440X  P123 c.1320C>G p.Y440X  P124 c.1327delT p.W443GfsX58  P125 c.1333T>C p.C445R  P126 c.1366G>A p.D456N  P127 c.1437C>A p.Y479X  P128 c.1437C>A p.Y479X  P129 c.1548G>C p.W516C  P130 c. 1702G>A p.E568K  P131 c.674+608_1587-1047delinsAG exon7_11del  P132 c. (1-?_1710+?)del exon 1_13del  P133 c. (1-?_1710+?)del exon 1_13del  P134 c. (1-?_1710+?)del exon 1_13del  P135 c. (1-?_1710+?)del exon 1_13del  Pts: patients; Nt.: nucleotide; AA.: amino acid; del: deletion; ins: insertion; dup: duplication. #: novel mutations identified in this study. Note: 15 patients with CYBB mutations were not included in this table because of lacking detailed mutation information from the published paper. P1-36 were patients reported in the present study and P49-135 were the patients reported previously from Mainland China. P101 and 102 are brothers, and P108 and 109 are twin brothers ; while the other patients cited (except patients cited from ) have no relationships. The relationship between the patients who were cited from  could not be determined because of lacking reliable information from the published paper. Table 5: Summary of different gene mutations in AR-CGD patients from Mainland China. Patient Mutation Mutation Nt. change number gene type P37 CYBA Nonsense c.7C>T P41 NCF1 Deletion; c. [541delG; 923T>C] * missense P43 NCF2 Missense c.550C>T p136 NCF2 Missense c.137T>G p137 NCF2 Deletion c.113 0_1135delACATGG p138 CYBA Nonsense c.7C>T p139 CYBA Missense c.7C>T p140 CYBA Missense; c.[7C>T; 59-2A>G] splicing error p141 CYBA Missense c.152T>G p142 CYBA Deletion c.246_273del p143 NCF1 Deletion c.75_76delGT p144 NCF1 Deletion c.75-76delGT p145 NCF1 Deletion c.75-76delGT p146 NCF1 Deletion; c.763-800del; c. 923T>C missense Patient AA. change Reference number P37 p.Q3X This study P41 p.D181TfsX5 p.V308A This study P43 p.R184X This study p136 p.M46R  p137 p.D377_M378del  p138 p.Q3X  p139 p.Q3X  p140 p.Q3X exon 2_del?  p141 p.L51R  p142 p.F83SfsX98  p143 p.Y26HfsX25  p144 p.Y26HfsX25  p145 p.Y26HfsX25  p146 p.E25HR267del p.V308A  Pts: patients; Nt.: nucleotide; AA.: amino acid; del: deletion; AR: autosomal recessive. * : novel mutation found in this study. P37, P41, and P43 were the patients reported in the present study and P136-146 were the patients reported previously from Mainland China. Table 5: Summary of different gene mutations in AR-CGD patients from Mainland China. Patient Mutation Mutation Nt. change number gene type P37 CYBA Nonsense c.7C>T P41 NCF1 Deletion; c. [541delG; 923T>C] * missense P43 NCF2 Missense c.550C>T p136 NCF2 Missense c.137T>G p137 NCF2 Deletion c.113 0_1135delACATGG p138 CYBA Nonsense c.7C>T p139 CYBA Missense c.7C>T p140 CYBA Missense; c.[7C>T; splicing error 59-2A>G] p141 CYBA Missense c.152T>G p142 CYBA Deletion c.246_273del p143 NCF1 Deletion c.75_76delGT p144 NCF1 Deletion c.75-76delGT p145 NCF1 Deletion c.75-76delGT p146 NCF1 Deletion; c.763-800del; missense c. 923T>C Patient AA. change Reference number P37 p.Q3X This study P41 p.D181TfsX5 This study p.V308A P43 p.R184X This study p136 p.M46R  p137 p.D377_M378del  p138 p.Q3X  p139 p.Q3X  p140 p.Q3X  exon 2_del? p141 p.L51R  p142 p.F83SfsX98  p143 p.Y26HfsX25  p144 p.Y26HfsX25  p145 p.Y26HfsX25  p146 p.E25HR267del  p.V308A Pts: patients; Nt.: nucleotide; AA.: amino acid; del: deletion; AR: autosomal recessive. * : novel mutation found in this study. P37, P41, and P43 were the patients reported in the present study and P136-146 were the patients reported previously from Mainland China. Table 6: Comparison of different subtypes of CGD in 4 major PID centers from Mainland China and large cohort studies from other countries. Pts XL-CGD AR-CGD UD Total CYBB CYBA NCF1 NCF2 This study 36/48 1/48 1/48 1/48 9/48 48 (75%) (2%) (2%) (2%) (19%) Center 2  30/38 2/48 3/48 0/48 3/48 38 (79%) (5%) (8%) (0%) (8%) Center 3 [16, 20] 31/48 1/48 2/48 3/48 11/48 48 (65%) (2%) (4%) (6%) (23%) Center 4 [21-30] 36/42 2/42 1/42 0/42 3/42 42 (86%) (5%) (2%) (0%) (7%) Japan*  109/148 16/148 10/148 13/148 -- 229 (74%) (11%) (7%) (9%) The United 259/368 7/368 45/368 10/368 28/368 368 States  (70%) (2%) (12%) (3%) (8%) Europe  290/429 22/429 69/429 11/429 37/429 429 (68%) (5%) (16 %) (3%) (9%) Turkey  34/89 20/89 17/89 13/89 5/89 89 (38%) (23%) (19%) (15%) (6%) Pts: patients; XL: X-linked; AR: autosomal recessive; UD: unidentified. * A total of 229 CGD patients were reported in a Japanese national registry, 148 of whom have been classified into four types based on flow cytometric and western blotting analysis. Figure 1: The age at onset and diagnosis of CGD in this study and other studies reported from Mainland China. Age at onset and diagnosis in different PIDs centers and whole China Age (month) This Center 2 Center 3 Center 4 Mainland Study China Age at onset 3.48 1.81 3.4 6.27 4.71 Age at diagnosis 26.88 29.04 31.7 27.02 29.65
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|Title Annotation:||Research Article|
|Author:||Wu, Jing; Wang, Wei-Fan; Zhang, Yi-Dan; Chen, Tong-Xin|
|Publication:||Journal of Immunology Research|
|Date:||Jan 1, 2017|
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