PMID- 17264298 OWN - NLM STAT- MEDLINE DCOM- 20070712 LR - 20231024 IS - 0006-4971 (Print) IS - 0006-4971 (Linking) VI - 109 IP - 10 DP - 2007 May 15 TI - Dasatinib induces significant hematologic and cytogenetic responses in patients with imatinib-resistant or -intolerant chronic myeloid leukemia in accelerated phase. PG - 4143-50 AB - Treatment options are limited for patients with imatinib-resistant or -intolerant accelerated phase chronic myeloid leukemia (CML-AP). Dasatinib is a novel, potent, oral, multitargeted kinase inhibitor of BCR-ABL and SRC-family kinases that showed marked efficacy in a phase 1 trial of patients with imatinib-resistant CML. Results are presented for 107 patients with CML-AP with imatinib-resistance or -intolerance from a phase 2, open-label study further evaluating dasatinib efficacy and safety. At 8 months' minimum follow-up, 81%, 64%, and 39% of patients achieved overall, major (MaHR), and complete hematologic responses, respectively, whereas 33% and 24% attained major and complete cytogenetic remission. Of 69 patients who achieved MaHR, 7 progressed. Seventy-six percent of patients are estimated to be alive and progression-free at 10 months. Response rates for the 60% of patients with baseline BCR-ABL mutations did not differ from the total population. Dasatinib was well tolerated: most nonhematologic adverse events (AEs) were mild to moderate; no imatinib-intolerant patients discontinued dasatinib because of AEs. Although common (76% of patients with severe neutropenia), cytopenias were manageable through dose modification. In summary, dasatinib induced significant hematologic and cytogenetic responses in patients with imatinib resistance or intolerance, was well tolerated, and may represent a potent new therapeutic option for CML-AP. Further follow-up is warranted. This trial was registered at www.clinicaltrials.gov as #CA180005. FAU - Guilhot, Francois AU - Guilhot F AD - Clinical Research Centre, Centre Hospitalier et Universitaire La Miletrie, Poitiers, France. f.guilhot@chu-poitiers.fr FAU - Apperley, Jane AU - Apperley J FAU - Kim, Dong-Wook AU - Kim DW FAU - Bullorsky, Eduardo O AU - Bullorsky EO FAU - Baccarani, Michele AU - Baccarani M FAU - Roboz, Gail J AU - Roboz GJ FAU - Amadori, Sergio AU - Amadori S FAU - de Souza, Carmino A AU - de Souza CA FAU - Lipton, Jeffrey H AU - Lipton JH FAU - Hochhaus, Andreas AU - Hochhaus A FAU - Heim, Dominik AU - Heim D FAU - Larson, Richard A AU - Larson RA FAU - Branford, Susan AU - Branford S FAU - Muller, Martin C AU - Muller MC FAU - Agarwal, Prasheen AU - Agarwal P FAU - Gollerkeri, Ashwin AU - Gollerkeri A FAU - Talpaz, Moshe AU - Talpaz M LA - eng PT - Clinical Trial, Phase II PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20070130 PL - United States TA - Blood JT - Blood JID - 7603509 RN - 0 (Antineoplastic Agents) RN - 0 (Benzamides) RN - 0 (Piperazines) RN - 0 (Pyrimidines) RN - 0 (Thiazoles) RN - 8A1O1M485B (Imatinib Mesylate) RN - EC 2.7.10.1 (Protein-Tyrosine Kinases) RN - EC 2.7.10.2 (Fusion Proteins, bcr-abl) RN - RBZ1571X5H (Dasatinib) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Antineoplastic Agents/adverse effects/therapeutic use MH - Benzamides MH - Blood Cell Count MH - Cytogenetic Analysis MH - Dasatinib MH - Disease Progression MH - Drug Resistance, Neoplasm/drug effects/genetics MH - Female MH - Fusion Proteins, bcr-abl MH - Humans MH - Imatinib Mesylate MH - Leukemia, Myelogenous, Chronic, BCR-ABL Positive/blood/*drug therapy/*genetics/*pathology MH - Male MH - Middle Aged MH - Piperazines/adverse effects/*therapeutic use MH - Point Mutation MH - Protein-Tyrosine Kinases/genetics MH - Pyrimidines/adverse effects/*therapeutic use MH - Thiazoles/adverse effects/*therapeutic use MH - Treatment Outcome EDAT- 2007/02/01 09:00 MHDA- 2007/07/13 09:00 CRDT- 2007/02/01 09:00 PHST- 2007/02/01 09:00 [pubmed] PHST- 2007/07/13 09:00 [medline] PHST- 2007/02/01 09:00 [entrez] AID - S0006-4971(20)41530-7 [pii] AID - 10.1182/blood-2006-09-046839 [doi] PST - ppublish SO - Blood. 2007 May 15;109(10):4143-50. doi: 10.1182/blood-2006-09-046839. Epub 2007 Jan 30.