PMID- 22431570 OWN - NLM STAT- MEDLINE DCOM- 20120730 LR - 20220310 IS - 1528-0020 (Electronic) IS - 0006-4971 (Linking) VI - 119 IP - 22 DP - 2012 May 31 TI - Phase 1 study results of the type II glycoengineered humanized anti-CD20 monoclonal antibody obinutuzumab (GA101) in B-cell lymphoma patients. PG - 5126-32 LID - 10.1182/blood-2012-01-404368 [doi] AB - Whereas the chimeric type I anti-CD20 Ab rituximab has improved outcomes for patients with B-cell malignancies significantly, many patients with non-Hodgkin lymphoma (NHL) remain incurable. Obinutuzumab (GA101) is a glycoengineered, humanized anti-CD20 type II Ab that has demonstrated superior activity against type I Abs in vitro and in preclinical studies. In the present study, we evaluated the safety, efficacy, and pharmacokinetics of GA101 in a phase 1 study of 21 patients with heavily pretreated, relapsed, or refractory CD20(+) indolent NHL. Patients received GA101 in a dose-escalating fashion (3 per cohort, range 50/100-1200/2000 mg) for 8 x 21-day cycles. The majority of adverse events (AEs) were grades 1 and 2 (114 of 132 total AEs). Seven patients reported a total of 18 grade 3 or 4 AEs. Infusion-related reactions were the most common AE, with most occurring during the first infusion and resolving with appropriate management. Three patients experienced grade 3 or 4 drug-related infusion-related reactions. The best overall response was 43%, with 5 complete responses and 4 partial responses. Data from this study suggest that GA101 was well tolerated and demonstrated encouraging activity in patients with previously treated NHL up to doses of 2000 mg. This trial is registered at www.clinicaltrials.gov as NCT00517530. FAU - Salles, Gilles AU - Salles G AD - Hospices Civils de Lyon, Hematologie, Universite de Lyon, Unite Mixte de Recherche (UMR) 5239, Centre National de la Recherche Scientifique (CNRS), Pierre-Benite, France. gilles.salles@chu-lyon.fr FAU - Morschhauser, Franck AU - Morschhauser F FAU - Lamy, Thierry AU - Lamy T FAU - Milpied, Noel AU - Milpied N FAU - Thieblemont, Catherine AU - Thieblemont C FAU - Tilly, Herve AU - Tilly H FAU - Bieska, Gabi AU - Bieska G FAU - Asikanius, Elina AU - Asikanius E FAU - Carlile, David AU - Carlile D FAU - Birkett, Joe AU - Birkett J FAU - Pisa, Pavel AU - Pisa P FAU - Cartron, Guillaume AU - Cartron G LA - eng SI - ClinicalTrials.gov/NCT00517530 PT - Clinical Trial, Phase I PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20120319 PL - United States TA - Blood JT - Blood JID - 7603509 RN - 0 (Antibodies, Monoclonal, Humanized) RN - 0 (Antigens, CD20) RN - O43472U9X8 (obinutuzumab) SB - IM CIN - Blood. 2012 May 31;119(22):5061-3. PMID: 22653951 MH - Adult MH - Aged MH - Aged, 80 and over MH - Antibodies, Monoclonal, Humanized/*administration & dosage/*adverse effects MH - *Antigens, CD20 MH - Female MH - Humans MH - Lymphoma, B-Cell/*drug therapy MH - Male MH - Middle Aged MH - Time Factors EDAT- 2012/03/21 06:00 MHDA- 2012/07/31 06:00 CRDT- 2012/03/21 06:00 PHST- 2012/03/21 06:00 [entrez] PHST- 2012/03/21 06:00 [pubmed] PHST- 2012/07/31 06:00 [medline] AID - S0006-4971(20)47763-8 [pii] AID - 10.1182/blood-2012-01-404368 [doi] PST - ppublish SO - Blood. 2012 May 31;119(22):5126-32. doi: 10.1182/blood-2012-01-404368. Epub 2012 Mar 19.