Failure of yttrium-90 ([sup.90]Y)-ibritumomab tiuxetan radioimmunotherapy (Zevalin[R]) with fatal side effects in relapsed/refractory diffuse large B-cell NHL transformed from other lymphomas/Diger lenfomalardan transforme olmus relaps/refrakter difuz buyuk B hucreli lenfomada olumcul yan etkisi ile yttrium-90([sup.90]Y)-ibritumomab tiuxetan radyoimmunoterapi (Zevalin[R])'nin basarisizligi.
A 51-year-old male patient was initially diagnosed with stage III-B follicular lymphoma three years before. At the first assessment, there was no bone marrow involvement. A computed tomography (CT) scan of the abdomen revealed hepatosplenomegaly and bulky intraabdominal lymph nodes (7x5cm). After eight cycles of R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, prednisone) chemotherapy, complete remission (CR) was achieved. Four months later, while off-therapy, disease progression was noted without bone marrow involvement. Two cycles of R-ICE (rituximab, ifosfamide, carboplatin, etoposide) salvage chemotherapy was performed. CT scan of the abdomen and thorax showed no improvement in lymph nodes after chemotherapy. Hence, the patient's disease was accepted as chemo-resistant. Rituximab 250 mg/[m.sup.2] was given as an intravenous infusion on days 1 and 8. [sup.90]Y-ibritumomab tiuxetan was administered within 4 hours of the predose of rituximab on day 8 by a 10-minute intravenous 'slow push' at a close of 0.4 mCi/kg. Two months after [sup.90]Y-ibritumomab tiuxetan therapy, transformation to diffuse large B cell NHL occurred. ESHAP (etoposide, methylprednisolone, cytarabine, cisplatin) chemotherapy was given but the patient died soon after chemotherapy with no disease response due to sepsis following disseminated intravascular coagulation and intracranial bleeding.
The second patient was a 23-year-old male initially diagnosed as stage III nodular sclerosing type Hodgkin disease in December 2004. He had massive hepatosplenomegaly and widespread enlarged lymph nodes with a mediastinal bulky disease (8x8cm). Gallium scintigraphy was also positive for adrenal involvement. After two cycles of ABVD (doxorubicin, bleomycin, vinblastine, dacarbazine) chemotherapy, progression was observed. New lesions in the liver and pancreas were detected by computed tomography. Involved field radiotherapy was given to the mediastinum. Low molecular weight heparin was also started because of vena cava superior syndrome. In May 2005, intestinal obstruction and perforation developed and ileal resection biopsy revealed a new pathological entity, diffuse large Bcell NHL. After eight cycles of R-CHOP-14 chemotherapy, a partial remission was achieved but unfortunately central nervous system relapse developed with an intracranial mass (6.4x2.7 cm). After one cycle of high-dose methotrexate and cytosine arabinoside chemotherapy, he received radiotherapy to the mediastina. Progression of mediastinal lymph nodes occurred under R-ICE chemotherapy, while in the fourth cycle. He had no HLA identical sibling donor, so rituximab and [sup.90]Y-ibritumomab were administered as in the previous patient. However, disease progression occurred and the patient died after three weeks.
DLBCL is the second most common histology of all lymphomas, and although considered aggressive in nature, it can be treated with curative intent with standard immunochemotherapy . In contrast, patients with follicular and other indolent lymphomas can sustain prolonged remission periods, but eventually relapse and require subsequent courses of therapy that lead to fewer and shorter remissions . [sup.90]Y-ibritumomab tiuxetan RIT is a new and effective treatment for relapsed or refractory B-cell NHL. This first-in-class RIT combines the cell-specific targeting power of the anti-CD20 monoclonal antibody with the tumor cell-killing ability of 90Y radiation . Whereas total body irradiation (TBI) delivers an equivalent dose of radiation to all organs, radioimmunoconjugates specific for tumor-associated antigens such as CD20 deliver a 10-fold or greater radiation dose to the tumor than to the whole body . The phase I trials demonstrated that in patients with a platelet count of greater than or equal to 150 x [10.sup.9]/L, a schedule of intravenous rituximab 250 mg/[m.sup.2] on days 1 and 8, and 0.4 mCi/kg of intravenous 90Y-ibritumomab tiuxetan on day 8 was safe and efficacious and did not require stem cells . Rituximab is given to enable clearance of peripheral B-cells and to maximize biodistribution prior to radioimmunoconjugate therapy . Although high response rates have been suggested in the literature, our two relapsed and refractory NHL patients showed no benefit from the RIT approach. The first patient exhibited fatal septic side effects, while the second was lost with disease progression. Therefore, Zevalin[R] even precipitated the poor outcome of these unique transformed lymphoid malignancies. Elucidation of these adverse observations with controlled clinical trials could lead to the identification of RIT for the clinical management of lymphoid malignancies with such a unique changing clinicopathological disease course.
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Songul Serefhanoglu, Ebru Koca, Hakan Goker, Ibrahim Celalettin Haznedaroglu, Deniz Cetiner, Nilgun Sayinalp, Yahya Buyukasik, Osman Ilhami Ozcebe
Department of Internal Medicine, Division of Hematology, Hacettepe University School of Medicine, Ankara, Turkey
Address for Correspondence: Asst. Prof. Songul Serefhanoglu, Department of Internal Medicine, Division of Hematology, Hacettepe University Medical School, 00603 Ankara, Turkey Phone: +90 312 305 15 36 - +90 312 305 15 36 E-mail: firstname.lastname@example.org
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|Title Annotation:||Letter to the Editor|
|Author:||Serefhanoglu, Songul; Koca, Ebru; Goker, Hakan; Haznedaroglu, Ibrahim Celalettin; Cetiner, Deniz; Sa|
|Publication:||Turkish Journal of Hematology|
|Article Type:||Clinical report|
|Date:||Dec 1, 2008|
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