A functional SNP, rs1056560, in the CRY1 gene in the clock pathway was significantly associated with OS (P < .001, Q = .06)….the first time we identify a potential predictive biomarker for regorafenib in the CORRECT population….Our finding helps better understand regorafenib response and may support alternative treatment choices based on CRY1 rs1056560 genotypes to optimize regorafenib benefit.