PMID- 17496201 OWN - NLM STAT- MEDLINE DCOM- 20071106 LR - 20220321 IS - 0006-4971 (Print) IS - 0006-4971 (Linking) VI - 110 IP - 7 DP - 2007 Oct 1 TI - Dasatinib induces rapid hematologic and cytogenetic responses in adult patients with Philadelphia chromosome positive acute lymphoblastic leukemia with resistance or intolerance to imatinib: interim results of a phase 2 study. PG - 2309-15 AB - Patients with Philadelphia (Ph) chromosome-positive acute lymphoblastic leukemia (ALL) have a rapid disease course and a poor prognosis. Dasatinib, a novel, oral, multitargeted kinase inhibitor of BCR-ABL and SRC family kinases, has previously induced responses in patients with imatinib-resistant or -intolerant Ph-positive ALL. We present the interim results of a phase 2 study designed to further assess the efficacy, safety, and tolerability of dasatinib 140 mg in this patient population (n = 36). With a minimum follow-up of 8 months, treatment with dasatinib resulted in substantial hematologic and cytogenetic response rates. Major hematologic responses were achieved in 42% (15/36) of patients, 67% of whom remained progression-free. Complete cytogenetic responses were attained by 58% (21/36) of patients. The presence of BCR-ABL mutations conferring imatinib resistance did not preclude a response to dasatinib. Dasatinib was also tolerable, with 6% (2/36) of patients discontinuing therapy as a result of study-drug toxicity. Most adverse events (AEs) were grade 1 or 2; febrile neutropenia was the most frequent severe AE, but this and other cytopenias were manageable with dose reduction. Dasatinib represents a safe and effective treatment option and an important therapeutic advance for patients with Ph-positive ALL. This trial was registered at www.clinicaltrials.gov as #CA180015. FAU - Ottmann, Oliver AU - Ottmann O AD - Medizinische Klinik II, Johann Wolfgang Goethe Universitat, Frankfurt, Germany. ottmann@em.uni-frankfurt.de FAU - Dombret, Herve AU - Dombret H FAU - Martinelli, Giovanni AU - Martinelli G FAU - Simonsson, Bengt AU - Simonsson B FAU - Guilhot, Francois AU - Guilhot F FAU - Larson, Richard A AU - Larson RA FAU - Rege-Cambrin, Giovanna AU - Rege-Cambrin G FAU - Radich, Jerald AU - Radich J FAU - Hochhaus, Andreas AU - Hochhaus A FAU - Apanovitch, Anne Marie AU - Apanovitch AM FAU - Gollerkeri, Ashwin AU - Gollerkeri A FAU - Coutre, Steven AU - Coutre S LA - eng PT - Clinical Trial, Phase II PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20070511 PL - United States TA - Blood JT - Blood JID - 7603509 RN - 0 (Benzamides) RN - 0 (Piperazines) RN - 0 (Pyrimidines) RN - 0 (Thiazoles) RN - 8A1O1M485B (Imatinib Mesylate) RN - EC 2.7.10.2 (Fusion Proteins, bcr-abl) RN - RBZ1571X5H (Dasatinib) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Benzamides MH - Chromosome Aberrations/*drug effects MH - Cytogenetics MH - Dasatinib MH - *Drug Resistance, Neoplasm MH - *Drug Tolerance MH - Drug-Related Side Effects and Adverse Reactions MH - Female MH - Follow-Up Studies MH - Fusion Proteins, bcr-abl/genetics MH - Hematology MH - Humans MH - Imatinib Mesylate MH - Male MH - Middle Aged MH - Mutation/genetics MH - Piperazines/pharmacology/*therapeutic use MH - Precursor Cell Lymphoblastic Leukemia-Lymphoma/*drug therapy/*genetics/pathology MH - Pyrimidines/adverse effects/pharmacology/*therapeutic use MH - Thiazoles/adverse effects/pharmacology/*therapeutic use MH - Time Factors EDAT- 2007/05/15 09:00 MHDA- 2007/11/07 09:00 CRDT- 2007/05/15 09:00 PHST- 2007/05/15 09:00 [pubmed] PHST- 2007/11/07 09:00 [medline] PHST- 2007/05/15 09:00 [entrez] AID - S0006-4971(20)60478-5 [pii] AID - 10.1182/blood-2007-02-073528 [doi] PST - ppublish SO - Blood. 2007 Oct 1;110(7):2309-15. doi: 10.1182/blood-2007-02-073528. Epub 2007 May 11.