BRCA1 and cystic fibrosis: The genes found to be repeatedly mutated in both PCD and CF are: mucA, algU, lasR, mexZ, mexS, and mexA. The two genes not identified in candidate pathoadaptive gene lists in previous CF studies are pilG and pscP. However, both genes have previously been found mutated in CF populations of P. aeruginosa, and although pilG is not identified as pathoadaptive, other pili-processing genes such as pilQ and pilD have been listed as such17.