Cystic Fibrosis is a genetic disorder that affects the lungs, pancreas, liver, kidneys and intestine. Cystic fibrosis is inherited in an autosomal recessive manner. It begins when both copies of the gene for the cystic fibrosis transmembrane conductance regulator (CFTR) protein get mutated. Sign and symptoms include difficulty in breathing, coughing up mucus, fatty stool, clubbing of fingers and toes. The condition is diagnosed by a sweat test and genetic testing.