CFTR and breast cancer: Based on the results of the comparison, there was no significant difference in the frequency and distribution of pathogenic variants of the CFTR gene (PG:OR 1.181 (95% CI 0.859–1.625, p = 0.305), BC:OR 1.225 (95% CI 0.874–1.718, p = 0.197), CRC:OR 0.750 (95% CI 0.238–2.366, p = 0.623), OC:OR 0.963 (95% CI 0.243–3.821, p = 0.958)), which is probably due to either an insufficient number of individuals in both patient and control cohorts, or features of the cohort.