Abstract:
:CD37 is cell surface tetraspanin present on normal and malignant B cells. Otlertuzumab (TRU-016) is a novel humanized anti-CD37 protein therapeutic. Patients with relapsed or refractory follicular non-Hodgkin lymphoma (FL), mantle cell lymphoma (MCL), or Waldenström's macroglobulinaemia (WM) received otlertuzumab at 20 mg/kg administered intravenously once a week for up to 8 weeks followed by 4 monthly doses. Sixteen patients were treated; median age was 62·5 years (range, 41-81), and median number of prior regimens was 4 (range, 1-7). Twelve patients were refractory to prior treatment, 5 were refractory to rituximab. The mean terminal half-life was 9·5 days. Lymph node reduction of ≥50% by computerized tomography scan measurements was seen in 3 of 12 patients, including one FL patient who had a partial response. One WM patient had a minor response. The most frequent adverse events were neutropenia, fatigue, nausea, thrombocytopenia, diarrhoea, and peripheral oedema; most were grade 1/2. Otlertuzumab treatment appears to have been well tolerated by the patients in this study. Clinical activity was observed in this small heterogeneous cohort of highly refractory, heavily pretreated B-cell non-Hodgkin lymphoma patients. These data suggest that further clinical investigation in non-Hodgkin lymphoma is warranted.
journal_name
Br J Haematoljournal_title
British journal of haematologyauthors
Pagel JM,Spurgeon SE,Byrd JC,Awan FT,Flinn IW,Lanasa MC,Eisenfeld AJ,Stromatt SC,Gopal AKdoi
10.1111/bjh.13099subject
Has Abstractpub_date
2015-01-01 00:00:00pages
38-45issue
1eissn
0007-1048issn
1365-2141journal_volume
168pub_type
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