A two-stage genome-wide association study identifies novel germline genetic variations in CACNA2D3 associated with radiotherapy response in nasopharyngeal carcinoma

Release time:2023-02-01

Impact Factor:8.448

DOI number:10.1186/s12967-022-03819-4

Affiliation of Author(s):中南大学湘雅医院

Teaching and Research Group:临床药理研究所

Journal:Journal of Translational Medicine

Key Words:Genome‑wide association study, Nasopharyngeal carcinoma, Radiotherapy, Efficacy, CACNA2D3

Abstract:Background: Radiotherapy (RT) is the standard treatment for nasopharyngeal carcinoma (NPC). However, due to individual differences in radiosensitivity, biomarkers are needed to tailored radiotherapy to cancer patients. However, comprehensive genome-wide radiogenomic studies on them are still lacking. The aim of this study was to identify genetic variants associated with radiotherapy response in patients with NPC. Methods: This was a large‑scale genome-wide association analysis (GWAS) including a total of 981 patients. 319 individuals in the discovery stage were genotyped for 688,783 SNPs using whole genome-wide screening microarray. Significant loci were further genotyped using MassARRAY system and TaqMan SNP assays in the validation stages of 847 patients. This study used logistic regression analysis and multiple bioinformatics tools such as PLINK, LocusZoom, LDBlockShow, GTEx, Pancan-meQTL and FUMA to examine genetic variants associated with radiotherapy efficacy in NPC. Results: After genome-wide level analysis, 19 SNPs entered the validation stage (P < 1 × 10- 6), and rs11130424 ultimately showed statistical significance among these SNPs. The efficacy was better in minor allele carriers of rs11130424 than in major allele carriers. Further stratified analysis showed that the association existed in patients in the EBV-positive, smoking, and late-stage (III and IV) subgroups and in patients who underwent both concurrent chemoradiotherapy and induction/adjuvant chemotherapy. Conclusion: Our study showed that rs11130424 in the CACNA2D3 gene was associated with sensitivity to radiotherapy in NPC patients.

Co-author:Bi-Wen Hu, Han-Xue Huang, Bing Yu, Qi Xiao, Qiao-Li Lv, Chen-Hui Luo

First Author:Lu-Lu Yu

Indexed by:Article

Correspondence Author:Cheng-Xian Guo, Jin-Gao Li, Xiao-Xue Xie, Ji-Ye Yin

Discipline:Medicine

First-Level Discipline:Pharmaceutical Science

Volume:21

Issue:1

Page Number:11

ISSN No.:1479-5876

Translation or Not:no

Date of Publication:2023-01-09

Included Journals:SCI

Links to published journals:https://translational-medicine.biomedcentral.com/articles/10.1186/s12967-022-03819-4