PMID- 21504383 OWN - NLM STAT- MEDLINE DCOM- 20111024 LR - 20200502 IS - 1029-2403 (Electronic) IS - 1026-8022 (Linking) VI - 52 IP - 6 DP - 2011 Jun TI - Does pretreatment fluorescence in situ hybridization for BCR-ABL predict imatinib-associated hematologic toxicity in chronic myeloid leukemia? PG - 1010-6 LID - 10.3109/10428194.2011.559670 [doi] AB - Imatinib (IM)-associated myelosuppression is rare in gastrointestinal stromal cell tumors (<10%) but common in chronic myeloid leukemia (CML). Selective inhibition of predominantly Philadelphia chromosome (Ph+) driven hematopoiesis may explain myelosuppression in CML. In the absence of clinical methods to quantitate the Ph+/Ph- progenitor ratio, we hypothesized that the pre-IM percentage of BCR-ABL+ cells measured by fluorescence in situ hybridization (FISH) predicts for myelosuppression. FISH analyses performed within 30 days pre-IM 400 mg/day were analyzed in 89 patients with chronic phase CML at three institutions. Patients who developed grade >/=3 cytopenias had a higher percentage of positive FISH (90% vs. 83%; p = 0.02). Cytopenias lasted a median of 16 days, and all patients but one continued IM, achieved complete hematologic and cytogenetic remissions, and did not experience progression, with a follow-up of 61 months. In conclusion, IM-associated cytopenias are associated with a high pre-IM FISH, are reversible, and do not adversely affect outcomes. FAU - Lima, Lisa M AU - Lima LM AD - Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA 30322, USA. FAU - Sampat, Keeran AU - Sampat K FAU - Assouline, Sarit AU - Assouline S FAU - Saxe, Debra AU - Saxe D FAU - Nault, Sharron AU - Nault S FAU - Tighiouart, Mourad AU - Tighiouart M FAU - McLemore, Morgan AU - McLemore M FAU - Arellano, Martha AU - Arellano M FAU - Winton, Elliott AU - Winton E FAU - Bernal-Mizrachi, Leon AU - Bernal-Mizrachi L FAU - Cortes, Jorge AU - Cortes J FAU - Khoury, Hanna Jean AU - Khoury HJ LA - eng PT - Journal Article PT - Multicenter Study DEP - 20110420 PL - United States TA - Leuk Lymphoma JT - Leukemia & lymphoma JID - 9007422 RN - 0 (Benzamides) RN - 0 (Oncogene Proteins v-abl) RN - 0 (Piperazines) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Pyrimidines) RN - 8A1O1M485B (Imatinib Mesylate) RN - EC 2.7.10.2 (Fusion Proteins, bcr-abl) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-bcr) SB - IM CIN - Leuk Lymphoma. 2011 Jun;52(6):943. PMID: 21599589 MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Benzamides MH - Dose-Response Relationship, Drug MH - Female MH - Follow-Up Studies MH - Fusion Proteins, bcr-abl/*genetics MH - Hematologic Diseases/*chemically induced MH - Humans MH - Imatinib Mesylate MH - In Situ Hybridization, Fluorescence/*methods MH - Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy/*genetics MH - Male MH - Middle Aged MH - Oncogene Proteins v-abl/genetics MH - Piperazines/*adverse effects/therapeutic use MH - Prognosis MH - Protein Kinase Inhibitors/adverse effects/therapeutic use MH - Proto-Oncogene Proteins c-bcr/genetics MH - Pyrimidines/*adverse effects/therapeutic use MH - Time Factors MH - Treatment Outcome MH - Young Adult EDAT- 2011/04/21 06:00 MHDA- 2011/10/25 06:00 CRDT- 2011/04/21 06:00 PHST- 2011/04/21 06:00 [entrez] PHST- 2011/04/21 06:00 [pubmed] PHST- 2011/10/25 06:00 [medline] AID - 10.3109/10428194.2011.559670 [doi] PST - ppublish SO - Leuk Lymphoma. 2011 Jun;52(6):1010-6. doi: 10.3109/10428194.2011.559670. Epub 2011 Apr 20.