FANCC and breast cancer: However, some studies showed different conclusions, that FANCC truncation variants (p.R158X and p.R548X) were not associated BC risk (OR = 0.64, 95% CI 0.32–1.29, p = 0.215 and OR = 1.03, 95% CI 0.41–2.56, p = 0.942, respectively) (Dörk et al. 2019).