Comprehensive Genetic Analysis of Cytarabine Sensitivity in a Cell-based Model Identifies Polymorphisms Associated with Outcome in AML Patients
Overview
Authors
Affiliations
A whole-genome approach was used to investigate the genetic determinants of cytarabine-induced cytotoxicity. We performed a meta-analysis of genome-wide association studies involving 523 lymphoblastoid cell lines (LCLs) from individuals of European, African, Asian, and African American ancestry. Several of the highest-ranked single-nucleotide polymorphisms (SNPs) were within the mutated in colorectal cancers (MCC) gene. MCC expression was induced by cytarabine treatment from 1.7- to 26.6-fold in LCLs. A total of 33 SNPs ranked at the top of the meta-analysis (P < 10(-5)) were successfully tested in a clinical trial of patients randomized to receive low-dose or high-dose cytarabine plus daunorubicin and etoposide; of these, 18 showed association (P < .05) with either cytarabine 50% inhibitory concentration in leukemia cells or clinical response parameters (minimal residual disease, overall survival (OS), and treatment-related mortality). This count (n = 18) was significantly greater than expected by chance (P = .016). For rs1203633, LCLs with AA genotype were more sensitive to cytarabine-induced cytotoxicity (P = 1.31 × 10(-6)) and AA (vs GA or GG) genotype was associated with poorer OS (P = .015), likely as a result of greater treatment-related mortality (P = .0037) in patients with acute myeloid leukemia (AML). This multicenter AML02 study trial was registered at www.clinicaltrials.gov as #NCT00136084.
Batcha A, Buckup N, Bamopoulos S, Jurinovic V, Rothenberg-Thurley M, Gittinger H Blood Adv. 2022; 7(6):1040-1044.
PMID: 36149944 PMC: 10036512. DOI: 10.1182/bloodadvances.2022007988.
Jahan Z, Benthani F, Currey N, Parker H, Dahlstrom J, Caldon C Cancers (Basel). 2022; 14(12).
PMID: 35740525 PMC: 9221012. DOI: 10.3390/cancers14122859.
Peng H, Wu X, Ge F, Huo Z, Wen Y, Li C Ann Transl Med. 2021; 9(5):401.
PMID: 33842622 PMC: 8033315. DOI: 10.21037/atm-20-5372.
di Francia R, Crisci S, De Monaco A, Cafiero C, Re A, Iaccarino G Cancers (Basel). 2021; 13(5).
PMID: 33669053 PMC: 7956511. DOI: 10.3390/cancers13050966.
Mulford A, Wing C, Dolan M, Wheeler H Hum Mol Genet. 2021; 30(3-4):305-317.
PMID: 33575800 PMC: 8248963. DOI: 10.1093/hmg/ddab029.