2026-04-17T14:49:02Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/4689742025-08-31T16:20:28Zcom_2072_98col_2072_378192

00925njm 22002777a 4500 dc Estrada Barreras, Natalia author Zamora, Lurdes author Ferrer-Marín, Francisca author Palomo Sanchís, Laura author García, Olga author Vélez, Patricia author De la Fuente, Iris author Sagüés, Miguel author Cabezón, Marta author Cortés, Montserrat author Vallansot, Rolando Omar author Senín-Magán, María Alicia author Boque, Concepcion author Xicoy, Blanca author Universitat Autònoma de Barcelona author 2022 Imatinib is the most common first-line tyrosine kinase inhibitor (TKI) used to treat chronic-phase chronic myeloid leukemia (CP-CML). However, only a proportion of patients achieve major molecular response (MMR), so there is a need to find biological factors that aid the selection of the optimal therapeutic strategy (imatinib vs. more potent second-generation TKIs). The aim of this retrospective study was to understand the contribution of germline single-nucleotide variants (gSNVs) in the achievement of MMR with imatinib. In particular, a discovery cohort including 45 CP-CML patients was analyzed through the DMET array, which interrogates 1936 variants in 231 genes related to the absorption, distribution, metabolism and excretion (ADME) process. Variants statistically significant in the discovery cohort were then tested in an extended and independent cohort of 137 CP-CML patients. Finally, a total of 7 gSNVs (ABCG1 -rs492338, ABCB11 -rs496550, ABCB11 -rs497692, CYP2D6 -rs1135840, CYP11B1 -rs7003319, MAT1A -rs4934027 and SLC22A1 -rs628031) and one haplotype in the ABCB11 gene were significantly associated with the achievement of MMR with first-line imatinibtreatment. In conclusion, we identified a genetic signature of response to imatinib in CP-CML patients that could be useful in selecting those patients that may benefit from starting imatinib as first-line therapy, therefore avoiding the toxicity related to second-generation TKIs. Chronic myeloid leukemia Imatinib Major molecular response Single-nucleotide polymorphisms Association between Germline Single-Nucleotide Variants in ADME Genes and Major Molecular Response to Imatinib in Chronic Myeloid Leukemia Patients