Hepatitis B infection in HIV-1-infected patients receiving highly active antiretroviral therapy in Lome, Togo: prevalence and molecular consequences.
Chronic HBV infection is therefore frequent among people living with HIV/AIDS in sub-Saharan countries, with reported HBV surface antigen (HBsAg) seroprevalence rates of 7-15% in West Africa [3,4] and East Africa. [5,6]
Before the introduction of antiretroviral therapy (ART), HBV/ HIV-coinfected individuals were likely to die from the clinical consequences of HIV infection. However, since the introduction of ART, the proportion of deaths due to HBV-associated end-stage liver disease (ESLD) has increased  because progression of HBV infection towards cirrhosis, ESLD and hepatocellular carcinoma is more rapid in HIV-coinfected patients. 
In 2010, the World Health Organization (WHO) recommended HBV screening before ART initiation, and the use of ART regimens containing tenofovir plus either lamivudine or emtricitabine for HIV/ HBV coinfection.  However, HBV screening may be unavailable in resource-limited settings, and lamivudine is often the only available drug active against HBV in sub-Saharan African countries. Use of lamivudine without tenofovir has been linked to gradual emergence of resistance mutations in the HBV polymerase gene.!10! The annual incidence of viral mutations in this setting has been estimated at about 22%, the main risk factor being high HBV viral load at ART initiation.  In contrast, no cases of HBV resistance have been described in tenofovir-treated patients.
In 2011, there were 103 HIV/AIDS care centres managing 80 000 patients in Togo, of whom 36 700 were receiving highly active ART. Expanded access to ART, combined with sustainable preventive interventions such as condom provision and health information, have reduced HIV-related morbidity and mortality in Togo.!12! In 2011, national guidelines  recommended firstline therapy with stavudine, or zidovudine and lamivudine, plus either nevirapine or efavirenz. Tenofovir is available for secondline therapy in the case of treatment failure or severe anaemia caused by zidovudine.
No data are available on HIV/HBV or hepatitis C virus (HCV) coinfection in Togo, and patients are not routinely tested for HBV infection. National guidelines recommend HBV screening only when the alanine aminotransferase (ALT) level is more than three times higher than normal. 
To determine the prevalence of HBV infection among HIV-infected patients in Togo, and the effect of lamivudine-containing ART on HBV replication and resistance.
Study design and setting
We conducted an analytical cross-sectional study in four HIV/AIDS care centres in Lome, Togo, namely the Department of Pneumology and Infectious Diseases of Sylvanus Olympio teaching hospital and three centres run by non-governmental organisations: Aide Medicale et Charite (AMC), Association de Bien Etre Familial (ATEBF), and Espoir Vie Togo (EVT).
We studied HIV-infected patients aged [greater than or equal to] 18 years who had been taking ART for at least 6 months and had not stopped taking their treatment for more than 3 months. The study flow chart is shown in Fig. 1.
Data were collected through a questionnaire-assisted interview and included sociodemographic information (sex, age, height, weight, nationality, partnership status, education, occupation) and medical information (history of blood transfusion and intramuscular (IM) and intravenous (IV) injections, alcohol consumption, pre-ART and current CD4 cell counts and HIV viral load if available, date of HIV diagnosis, date of first ART, current ART regimen, and treatment adherence). WHO criteria were used to determine the clinical stages of HIV infection. 
Blood samples were taken from each participant for liver enzyme assay and a CD4 cell count. Serum (7 mL) and plasma (14 mL) samples were stored at -20[degrees]C until testing in the molecular biology and immunology laboratory (BIOLIM) of the Lome Faculty of Medicine and Pharmacy.
[FIGURE 1 OMITTED]
HIV and HBV viral loads for patients with HBsAg were measured at the BIOLIM laboratory in Lome and the virology laboratory at Cochin Hospital, Paris, France. ALT, aspartate aminotransferase (AST) and gamma-glutamyl transpeptidase (GGT) were assayed using standard methods. The upper normal limits of ALT and AST levels were both 40 IU/L. CD4 cells were counted by flow cytometry on a Becton Dickinson FACSCalibur device (Becton Dickinson, USA). Screening for HBV infection was based on HBsAg detection; positive samples were tested for hepatitis B e-antigen (HBeAg) and anti-HBe antibodies. Samples negative for HBsAg were screened for antibodies to HBsAg and hepatitis B core antigen (HBcAg). Serological tests were performed with enzymelinked immunosorbent assay methods using reagents from DIASource (Belgium).
Participants who tested negative for all HBV markers were classified as HBV-susceptible, those who were positive for both anti-HBc and anti-HBs were classified as having been exposed to HBV, and those who were anti-HBc-negative and antiHBs-positive were classified as probably vaccinated.
Samples positive for HBsAg were tested for HIV and HBV viral load. HIV viral load was determined with a polymerase chain reaction (PCR) method targeting the polymerase gene (Abbott Real Time HIV, Abbott Diagnostics, France). HBV viral load was determined with a PCR method (Abbott Real Time HBV, Abbott Laboratories, USA). Results were expressed in IU/mL and log10 copies/mL. HBV DNA loads < 10 IU/mL were classified as undetectable.
Samples positive for both HBsAg and HBV DNA were HBV genotyped by phylogenetic methods, and the HBV polymerase gene was sequenced to detect mutations known to be associated with lamivudine resistance (rtV173L, rtV180M, rtA181T/V, rtT184G and rtM204V/I) using Bioedit software (http//:www.mbio.ncsu.edu/bioedit).
The study was designed and implemented in accordance with the Declaration of Helsinki and approved by the Comite Bioethique pour la Recherche en Sante (CBRS) (Ref. No. 006/2009/CBRS, 12 November 2009) before implementation. The patients gave their written informed consent, recorded in a form, for their data to be used for the study. The HBsAg, CD4 cell count and HIV viral load results were given to each patient by a doctor in a private room in the clinic.
Baseline values of continuous variables were expressed as means or medians and ranges and categorical variables as frequencies and percentages.
The [[chi].sup.2] test or Fisher's exact test were used as appropriate for bivariate analysis of categorical variables, and the Mann-Whitney test was used for continuous variables. The main endpoint was the prevalence of HIV/HBV coinfection, HBV infection being defined by the presence of HBsAg. Multivariate backwards stepwise logistic regression was used to identify factors independently associated with active HBV replication (HBV DNA > 10 IU/ mL). All variables significant in bivariate analysis (p < 0.05) and variables with p-values < 0.1 were included in the model. We then removed variables that were not significant at a p-value of < 0.05, in stepwise fashion. We also assessed the significance of the likelihood ratio of the test. No interaction was found among variables included in the model.
From April to December 2011, we enrolled 1 212 HIV-infected patients (mean age 41 years, range 21-79). Table 1 shows the sociodemographic, immunovirological and hepatic characteristics of the study population. Females represented 74.9% of the patients (n=908). Five hundred and eighty-two patients (48.0%) were living with a partner, 598 (49.3%) had attended secondary school, 1 043 (86.1%) had received at least one IM or IV injection, 209 (17.2%) had received a blood transfusion, and 25 (2.1%) reported HBV vaccination.
AST and ALT levels ranged from 35 to 364 IU/L and from 30 to 264 IU/l, respectively. The median CD4 cell count was 143/ pL (interquartile range (IQR) 63-205).
One thousand and eighty patients (89.1%) were on a first-line ART regimen comprising two nucleoside reverse transcriptase inhibitors and one non-nucleoside reverse transcriptase inhibitor, and 123 patients (10.1%) were on second-line ART. Most patients were on at least one antiretroviral drug active against HBV: lamivudine in 1 092 cases (90.1%) and tenofovir in 110 (9.1%).
Prevalence of HBV markers
Serological tests showed that 48.3% of the patients (585/1 212) had been exposed to HBV; of the 1 212 patients, 117 (9.7%) were HBsAg-positive, 243 (20.0%) were anti-HBs- and anti-HBc-positive, and 498 (41.1%) were only anti-HBc-positive. Sixteen patients (1.3%) were only anti-HBspositive and were considered as vaccinated against HBV, while 337 patients (27.8%) were negative for all the serological markers of HBV infection and were categorised as HBV-susceptible. Of the 117 patients who were HBsAg-positive, 16 (13.7%) were also HBeAg-positive, 86 (73.5%) were also anti-HBe-positive, and 15 (12.8%) had neither HBe marker.
Active HBV replication
Among the 117 HIV/HBV-coinfected patients, 115 (98.3) were on lamivudine. HBV DNA loads were > 10 IU/mL in 33/117 (28.2%) of these patients and 84/117 (71.8%) had HBV DNA loads < 10 IU/mL. Of the 16 HBeAg-positive patients, 14 (87.5%) had HBV DNA loads > 10 IU/mL(p < 0.0001), while 12 (75%) had HBV DNA loads > 1 500 IU/mL.
In bivariate analysis, active HBV replication was associated with > 24 months of ART (odds ratio (OR) 1.02; p = 0.045) and HBeAg positivity (OR 22.7; p < 0.0001) (Table 2).
In multivariate analysis, two factors were significantly associated with active HBV replication, namely HBeAg positivity (6.4-fold increase; adjusted OR (aOR) 6.4; p=0.001), and a higher level of education (aOR 6.5; p=0.026) (Table 3).
HBV resistance mutations
The prevalence of HBV resistance to lamivudine was 13.0% (15/115; 95% CI 7.0 19.0). Genotyping was successful in 24 of the 33 patients with active HBV replication, all 24 having HBV DNA loads > 2 000 IU/ mL. Genotype E was found in all 24 patients. HBV resistance mutations to lamivudine were detected in 15/23 patients (65.2%; 95% CI 48.7-87.7), and consisted of rtL180M in 14 cases and rtM204V/I in 15.
The prevalence of chronic HBV infection, based on the presence of HBsAg, was 9.7% among HIV-infected adults receiving ART in Lome, Togo, while 48.3% of the study population had serological evidence of exposure to HBV. Among HIV/HBVcoinfected patients positive for HBsAg, 13.7% were also positive for HBeAg. Of the 117 HBV-coinfected patients, 98.3% were on an antiretroviral regimen in which lamivudine was the only drug active on HBV. Active HBV replication was detected in 33 (28.2%) of these 117 patients. The prevalence of HBV genotypic resistance to lamivudine was 65.2% (15/23 successfully tested patients). The only resistance mutations in the HBV polymerase gene were rtL180M (14/15) and rtM204V/I (15/15).
Prevalence of HBV infection and HBeAg
The prevalence of chronic HBV infection among HIV-coinfected patients in our study was similar to that observed in the general population of Burkina Faso.  The situation in Togo is therefore quite different from that reported in European countries, where chronic HBV infection is about ten times more prevalent among HIV-infected people than in the general population. In France, for example, the prevalence of chronic HBV infection is 7% among HIV-infected persons and only 0.7% in the general population. [15,16] The profile of infection in Togo suggests that HBV is usually acquired in childhood, before acquisition of HIV infection. HBeAg may be present or absent in patients with chronic hepatitis B.  The generally long duration of HBV infection in Togolese individuals explains why most of them are HBeAg-negative and have relatively low HBV DNA loads, and why some are healthy carriers with no ongoing HBV replication. This was also the case in a recent study conducted in Abidjan, Cote d'Ivoire, where 33% of HIV/HBV-coinfected patients were healthy carriers of HBV, being HBsAg-positive but HBV DNAnegative.  Studies in other sub-Saharan African countries have also shown that most HBV-infected patients are HBeAg-negative. 
Prevalence of anti-HBc
Anti-HBc was the only serological marker of HBV exposure in 41.1% of our patients. Previous studies of HIV-coinfected patients have also shown a high prevalence of isolated anti-HBc positivity, ranging from 24.5% to 37.8%.119-211 In a recent study conducted in Spain, isolated anti-HBc positivity was associated with younger age and anti-HCV antibodies,!221 but those two factors were not analysed in our study.
Active HBV replication in HBsAg-positive patients
After a median of 31 months on ART, 71.8% of patients with chronic HBV infection had HBV DNA suppression when their ART regimen contained lamivudine. Only 28.2% of the patients with chronic HBV infection had HBV DNA levels indicating active replication, and the main factor associated with HBV replication was the presence of HBeAg. It has been reported that 48 weeks of combined tenofovirlamivudine therapy is often too short to achieve undetectable HBV DNA in HIV/HBV-coinfected patients, despite undetectable HIV viraemia. This was explained by associated factors such as positive HBeAg and high baseline HBV DNA. 
Our results are also consistent with the findings of a recent study performed in Thailand, where the rate of HBV DNA suppression in HIV/HBV-coinfected patients was 67% after 48 weeks of lamivudine-containing ART and in which HBV breakthrough was exclusively observed in HBeAg-positive patients. 
In contrast to other studies,  neither the duration of ART nor active HIV replication was associated with HBV replication in our study. The presence of HBeAg is a fairly reliable marker of HBV replication. In fact, at the initiation of ART, HBV and HIV/HBV coinfection markers were not determined in our study. Furthermore, 98.3% of patients in our study were receiving ART containing only lamivudine. It is known that the HBV viral load is related to the presence of HBeAg,  and lamivudine alone is less effective in reducing the HBV viral load. [26,27]
We also found that a higher level of education was associated with active HBV replication. This may be because patients with a lower level of education tend to acquire HBV infection earlier during childhood, through horizontal transmission among toddlers, and have therefore lost HBeAg, whereas patients with a higher level of education tend to acquire HBV later in life through sexual exposure. Low socioeconomic status and poor hygiene are commonly associated with a higher risk of HBV infection. 
Prevalence of HBV resistance to lamivudine
The prevalence of HBV resistance to lamivudine usually reaches 40-50% after 2 years of treatment in studies of Western cohorts of HIV/ HBV-coinfected individuals taking lamivudine as the only drug active against HBV, [10,29] whereas prevalence rates < 15% have been reported in similar populations in sub-Saharan Africa. This discrepancy could be related mainly to differences in the timing of HBV infection relative to HIV infection, or less probably to the fact that African studies usually involved shorter follow-up (24 months). A cross-sectional study in Cameroon found resistance mutations in 13% of 54 patients at 24 months.  A retrospective analysis in the Gambia found lamivudine resistance mutations in 14% of 21 patients followed up for between 6 and 56 months.  In two recent prospective cohort studies conducted in Nairobi, Kenya, lamivudine resistance occurred in only 9.5% of 27 coinfected patients after 18 months of therapy  and in only one of 159 women followed up for a median of 3.4 years. 
After a median of 31 months on ART, 28.2% of HIV-infected patients with chronic HBV coinfection had active HBV replication. HBeAg positivity was associated with HBV replication and with the occurrence of HBV resistance mutations. These findings suggest that a two-step approach may be suitable for HBV screening of HIVinfected patients prior to ART initiation in resource-limited settings, consisting of HBsAg screening in all patients and HBeAg screening of patients positive for HBsAg.
Acknowledgments. We particularly thank Association de Lutte contre le Sida (SIDACTION), Groupe d'interet public Ensemble pour une solidarity therapeutique hospitaliere en reseau (GIPESTHER), and the Programme National de Lutte contre le Sida-Togo. We also thank Valerie le Baut, Florence Artiguebieille, and Jean Marc Treluyer for their assistance, as well as all the patients who agreed to participate in this study. The authors alone are responsible for the views expressed in this article.
Author contributions. AAP, DS-C, J-FM, SB and ACD conceived and designed the study and wrote the manuscript. DEL and BS were involved in data analysis and interpretation. They wrote and revised the manuscript. AK and MS were involved in laboratory investigations and manuscript writing. PP and DS-C were responsible for the overall scientific management of the study, analysis and interpretation, and the preparation of the final manuscript. All the authors read and approved the final manuscript submitted for publication.
[1.] Alter MJ. Epidemiology of hepatitis B in Europe and worldwide. J Hepatol 2003;39(Suppl 1):S64-S69. D0I:10.1016/S0168-8278(03)00141-7
[2.] Mboto CI, Davies A, Fielder M, Jewell AP. Human immunodeficiency virus and hepatitis C coinfection in sub-Saharan West Africa. Br J Biomed Sci 2006;63(1):29-37.
[3.] Zoufaly A, Onyoh EF, Tih PM, Awasom CN, Feldt T. High prevalence of hepatitis B and syphilis coinfections among HIV patients initiating antiretroviral therapy in the north-west region of Cameroon. Int J STD AIDS 2012;23(6):435-438. D0I:10.1258/ijsa.2011.011279
[4.] Sagoe KW, Agyei AA, Ziga F, et al. Prevalence and impact of hepatitis B and C virus co-infections in antiretroviral treatment naive patients with HIV infection at a major treatment center in Ghana. J Med Virol 2012;84(1):6-10. D0I:10.1002/jmv.22262.
[5.] Rusine J, Ondoa P, Asiimwe-Kateera B, et al. High seroprevalence of HBV and HCV infection in HIV-infected adults in Kigali, Rwanda. PLoS One 2013;8(5):e63303. D0I:10.1371/journal.pone.0063303
[6.] Boyles TH, Cohen K. The prevalence of hepatitis B infection in a rural South African HIV clinic. S Afr Med J 2011;101(7):470-471.
[7.] Salmon-Ceron D, Lewden C, Morlat P, et al. Liver disease as a major cause of death among HIV infected patients: Role of hepatitis C and B viruses and alcohol. J Hepatol 2005;42(6):799-805. DOI:10.1016/j.jhep.2005.01.022
[8.] Puoti M, Torti C, Bruno R, Filice G, Carosi G. Natural history of chronic hepatitis B in co-infected patients. J Hepatol 2006;44(1 Suppl):S65-S70. DOI:10.1016/j.jhep.2005.11.015
[9.] World Health Organization. Antiretroviral Therapy for HIV Infection in Adults and Adolescents: Recommendations for a Public Health Approach. 2010 revision. Geneva: WHO, 2010.
[10.] Benhamou Y, Bochet M, Thibault V, et al. Long-term incidence of hepatitis B virus resistance to lamivudine in human immunodeficiency virus-infected patients. Hepatology 1999;30(5):1302-1306. DOI:10.1002/hep.510300525
[11.] Zoulim F, Poynard T, Degos F, et al. A prospective study of the evolution of lamivudine resistance mutations in patients with chronic hepatitis B treated with lamivudine. J Viral Hepat 2006;13(4):278288. DOI:10.1111/j.1365-2893.2005.00712.x
[12.] Pitche P, Gbetoglo K, Saka B, et al. HIV prevalence and behavioral studies in female sex workers in Togo: A decline in the prevalence between 2005 and 2011. Pan Afr Med J 2014;15(1):62. DOI:10.11604/ pamj.2013.15.62.2457
[13.] Programme National de Lutte contre le Sida et le IST au Togo. Guide national de prise en charge medicale de l'infection par le VIH chez l'adulte, l'adolescent et lenfant. Lome, Togo: PNLS, 2014.
[14.] Tao I, Compaore TR, Diarra B, et al. Seroepidemiology of hepatitis B and C viruses in the general population of Burkina Faso. Hepat Res Treat 2014(2014):781843. DOI:10.1155/2014/781843
[15.] Larsen C, Pialoux G, Salmon D, et al. Prevalence of hepatitis C and hepatitis B infection in the HIV-infected population of France, 2004. Euro Surveill 2008;13(22):717-727.
[16.] Denis F, Ranger-Rogez S, Alain S, et al. Screening of pregnant women for hepatitis B markers in a French provincial university hospital (Limoges) during 15 years. Eur J Epidemiol 2004;19(10):973-978.
[17.] Akinbami AA, Oshinaike OO, Dosunmu OA, et al. Seroprevalence of hepatitis B e antigen (HBe antigen) and B core antibodies (IgG anti-HBcore and IgM anti-HBcore) among hepatitis B surface antigen positive blood donors at a tertiary centre in Nigeria. BMC Res Notes 2012;5(1):167. DOI:10.1186/1756-0500-5-167
[18.] Attia KA, Eholie S, Messou E, et al. Prevalence and virological profiles of hepatitis B infection in human immunodeficiency virus patients. World J Hepatol 2012;4(7):218-223. DOI:10.4254/wjh.v4.i7.218
[19.] Piroth L, Binquet C, Vergne M, et al. The evolution of hepatitis B virus serological patterns and the clinical relevance of isolated antibodies to hepatitis B core antigen in HIV infected patients. J Hepatol 2002;36(5):681-686. DOI:10.1016/S0168-8278(02)00019-3
[20.] Santos EA, Yoshida CF, Rolla VC, et al. Frequent occult hepatitis B virus infection in patients infected with human immunodeficiency virus type 1. Eur J Clin Microbiol Infect Dis 2003;22(2):92-98. DOI:10.1007/s10096-002-0868-0
[21.] Shire NJ, Rouster SD, Rajicic N, Sherman KE. Occult hepatitis B in HIV-infected patients. J Acquir Immune Defic Syndr 2004;36(3):869-875. DOI:10.1097/00126334-200407010-00015
[22.] Perez-Rodriguez MT, Sopena B, Crespo M, et al. Clinical significance of 'anti-HBc alone' in human immunodeficiency virus-positive patients. World J Gastroenterol 2009; 15(10): 1237-1241. DOI:10.3748/wjg.15.1237
[23.] Childs K, Joshi D, Byrne R, et al. Tenofovir-based combination therapy for HIV/HBV co-infection: Factors associated with a partial HBV virological response in patients with undetectable HIV viraemia. AIDS 2013;27(9):1443-1448. DOI:10.1097/QAD.0b013e32836011c2
[24.] Khamduang W, Gaudy-Graffin C, Ngo-Giang-Huong N, et al. Long-term hepatitis B virus (HBV) response to lamivudine-containing highly active antiretroviral therapy in HIV-HBV co-infected patients in Thailand. PLoS One 2012;7(7):e42184. DOI:10.1371/journal.pone.0042184
[25.] Matthews GV, Seaberg EC, Avihingsanon A, et al. Patterns and causes of suboptimal response to tenofovir-based therapy in individuals coinfected with HIV and hepatitis B virus. Clin Infect Dis 2013;56(9):e87-e94. DOI:10.1093/cid/cit002
[26.] Gu L, Han Y, Li Y, et al. Emergence of lamivudine-resistant HBV during antiretroviral therapy including lamivudine for patients coinfected with HIV and HBV in China. PLoS One 2015;10(8):e0134539. DOI:10.1371/journal.pone.0134539
[27.] Ismail S, Hafez HA, Darweesh SK, Kamal KH, Esmat G. Virologic response and breakthrough in chronic hepatitis B Egyptian patients receiving lamivudine therapy. Ann Gastroenterol 2014;27(4):380-386.
[28.] Zahraoui-Mehadji M, Baakrim MZ, Laraqui S, et al. Infectious risks associated with blood exposure for traditional barbers and their customers in Morocco. Sante 2004;14(4):211-216.
[29.] Ramos B, Nunez M, Martin-Carbonero L, et al. Hepatitis B virus genotypes and lamivudine resistance mutations in HIV/hepatitis B virus-coinfected patients. J Acquir Immune Defic Syndr 2007;44(5):557561. DOI:10.1097/QAI.0b013e3180314b46
[30.] Kouanfack C, Aghokeng AF, Mondain AM, et al. Lamivudine-resistant HBV infection in HIVpositive patients receiving antiretroviral therapy in a public routine clinic in Cameroon. Antivir Ther 2012;17(2):321-326. DOI:10.3851/IMP1911
[31.] Stewart B, Jobarteh ML, Sarge-Njie R, et al. Emergence of HBV resistance to lamivudine (3TC) in HIV/HBV co-infected patients in The Gambia, West Africa. BMC Res Notes 2011;4(1):561. DOI:10.1186/1756-0500-4-561
[32.] Kim HN, Scott J, Cent A, et al. HBV lamivudine resistance among hepatitis B and HIV coinfected patients starting lamivudine, stavudine and nevirapine in Kenya. J Viral Hepat 2011;18(10):e447-e452. DOI:10.1111/j.1365-2893.2011.01466.x
[33.] Day SL, Odem-Davis K, Mandaliya KN, et al. Prevalence, clinical and virologic outcomes of hepatitis B virus co-infection in HIV-1 positive Kenyan women on antiretroviral therapy. PLoS One 2013;8(3):e59346. DOI:10.1371/journal.pone.0059346
Accepted 4 March 2016.
A A Patassi, (1) MD; S Benaboud, (2) MD; D E Landoh, (3) MD, MPH; M Salou, (4) PharmD; A Claver Dagnra, (4) MD, PhD; B Saka, (5) MD; A Krivine, (6) MD; J-F Meritet, (6) MD; P Pitche, (5,7) MD, PhD; D Salmon-Ceron, (8) MD, PhD
(1) Service Maladies Infectieuses et Pneumologie CHU Sylvanus Olympio, Lome, Togo
(2) Unite de Recherche clinique, GFH Cochin, Paris, France
(3) Division de lepidemiologie, Ministere de la sante du Togo, Lome, Togo
(4) Laboratoire de Biologie Moleculaire, BIOLIM, Universite de Lome, Togo
(5) Service de dermatologie et 1ST, CHU Sylvanus Olympio, Universite de Lome, Togo
(6) Laboratoire de Virologie Pr Rozenberg Pole Biologie Pharmacie Pathologie, Hopital Cochin, Paris, France
(7) Conseil National de Lutte contre les IST/VIH/Sida, Lome, Togo
(8) Unite de Pathologie infectieuse, Groupe hospitalier Cochin, Paris, France
Corresponding author: A A Patassi (firstname.lastname@example.org)
Table 1. Sociodemographic, biological and immunovirological characteristics of the study population Overall HBsAg+ Descriptive variables (N=1 212) (N=117) Sociodemographic characteristics Age (years), 40.8 (34.1 - 37.9 (32.4 - 44.9) median (IQR) 47.8.) Males, n (%) 304 (25.1) 31 (26.5) Partnership status, n (%) One of a couple 582 (48.0) 50 (42.7) Alone 630 (52.0) 67 (57.3) Education level, n (%) No school or primary 614 (50.7) 54 (46.2) Secondary or higher 598 (49.3) 63 (53.8) Income-generating 998 (82.3) 97 (82.9) activity, n (%) Body weight (kg), 63 (55 - 72) 61 (55 - 68) median (IQR) Alcohol consumption, n (%) 350 (28.9) 36 (30.8) Transfusion of blood 209 (17.2) 26 (22.2) products, n (%) IV or IM injection, n (%) 1 043 (86.1) 104 (88.9) Immunovirological characteristics CD4 cell nadir 142 139 (54 - 193) (/[micro]L), median (IQR) (63 - 205) Last CD4 count 338 313 (183 - 427) (/[micro]L), median (216 - 474) (range) Last CD4 cell count (/[micro]L), n (%) <200 362 (29.9) 44 (37.6) 200 - 350 336 (27.7) 31 (26.4) >350 514 (42.4) 42 (35.9) HIV RNA (copies/mL), 40 (0 - 975) 40 (0 - 5 915) median (IQR) HIV RNA values (copies/mL, n =117), n (%) <40 - 43 (36.7) >40 - 74 (63.3) WHO stage of HIV, n (%) 1 or 2 831 (68.6) 80 (68.4) 3 or 4 381 (31.4) 37 (31.6) Ongoing antiretroviral 1 212 (100.0) 117 (100.0) treatment, n (%) Type of antiretroviral treatment, n (%) 1st-line therapy 1 080 (89.1) 108 (92.3) 2nd-line therapy 123 (10.1) 9 (7.7) Containing lamivudine or 1 102 (90.9) 115 (98.3) emtricitabine Containing tenofovir 110 (9.1) 9 (7.7) Duration of antiretroviral 31 30.2 (19.1 - 38.9) treatment (months), mean (18.2 - 57.6) (range) Hepatic status ALT (IU/mL), median 30 (5 - 264) 28 (8 - 174) (range) Hepatic decompensation, 16 (1.3) 1 (0.8) n (%) Vaccinated against HBV, 25 (2.1) 7 (6.1) n (%) HBsAg- Descriptive variables (N=1 095) Sociodemographic characteristics Age (years), 40.8 (34.7 - 47.9) median (IQR) Males, n (%) 273 (24.9) Partnership status, n (%) One of a couple 532 (48.6) Alone 563 (51.4) Education level, n (%) No school or primary 560 (51.1) Secondary or higher 535 (48.9) Income-generating 901 (82.3) activity, n (%) Body weight (kg), 63 (55 - 72) median (IQR) Alcohol consumption, n (%) 314 (28.7) Transfusion of blood 183 (16.7) products, n (%) IV or IM injection, n (%) 939 (85.7) Immunovirological characteristics CD4 cell nadir 142 (65 - 207) (/[micro]L), median (IQR) Last CD4 count 340 (219 - 479) (/[micro]L), median (range) Last CD4 cell count (/[micro]L), n (%) <200 318 (29.1) 200 - 350 305 (27.9) >350 472 (43.1) HIV RNA (copies/mL), 40 (0 - 185) median (IQR) HIV RNA values (copies/mL, n =117), n (%) <40 - >40 - WHO stage of HIV, n (%) 1 or 2 751 (68.6) 3 or 4 344 (31.4) Ongoing antiretroviral 1 003 (91.6) treatment, n (%) Type of antiretroviral treatment, n (%) 1st-line therapy 972 (88.8) 2nd-line therapy 114 (10.4) Containing lamivudine or 987 (90.1) emtricitabine Containing tenofovir 101 (9.2) Duration of antiretroviral 32.6 (18.2 - 57.1) treatment (months), mean (range) Hepatic status ALT (IU/mL), median 29 (6 - 232) (range) Hepatic decompensation, 15 (1.4) n (%) Vaccinated against HBV, 18 (1.6) n (%) Table 2. Factors associated with active HBV replication (HBV DNA >10 IU/mL) Variable OR 95% CI p-value Age (years) 1.02 0.96 - 1.10 0.52 CD4 cell count before ART (/[micro]L) 0.99 0.98 - 1.00 0.44 Last CD4 cell count 1.00 0.99 - 1.00 0.86 Duration of ART (months) 1.02 1.00 - 1.04 0.045 Type of antiretroviral treatment 0.98 1st-line therapy 1 1 2nd-line therapy 0.01 0.01 - 99.99 Sex 0.55 Male 1 1 Female 0.70 0.22 - 2.25 Education level 0.10 No school or primary 1 1 Secondary or higher 2.75 0.82 - 9.22 HBeAg status <0.0001 Negative 1 1 Positive 22.75 6.06 - 86.42 HIV viral load 0.73 Detectable (>40 IU/mL) 1 1 Undetectable 0.82 0.26 - 2.57 CD4 cell count before ART (/[micro]L) 0.51 <200 1 1 [greater than or equal to]200 0.48 0.05 - 4.30 Last CD4 cell count(/[micro]L) 0.59 <200 1 1 200 - <350 2.17 0.49 - 9.64 [greater than or equal to]350 1.49 0.34 - 6.50 Table 3. Factors independently associated with HBV replication (HBV DNA >10 IU/mL) among 117 HIV/HBV-coinfected patients Variable aOR 95%CI p-value Duration of ART 1.0 0.9 - 1.1 0.074 Education level 0.026 No school or primary 1 1 Secondary or higher 6.5 1.2 - 34.1 HBeAg status 0.001 Negative 1 1 Positive 6.4 2.1 - 19.5
|Printer friendly Cite/link Email Feedback|
|Author:||Patassi, A.A.; Benaboud, S.; Landoh, D.E.; Salou, M.; Dagnra, A. Claver; Saka, B.; Krivine, A.; Meri|
|Publication:||South African Medical Journal|
|Date:||Jun 1, 2016|
|Previous Article:||Psoriatic arthritis: an assessment of clinical, biochemical and radiological features in a single-centre South African cohort.|
|Next Article:||The CPD programme for SAMJ is administered by Medical Practice Consulting. CPD questionnaires must be completed online at www.mpconsulting.co.za.|