F2 and colorectal cancer: No particular genetic condition was sought after but results concerned: hereditary hemochromatosis, Huntington's disease, breast and ovarian cancer, cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy, colorectal cancer, hereditary non-polyposis colorectal cancer, familial adenomatous polyposis, thrombophilia factor V (Leiden) mutation, prothrombin gene mutation, Charcot-Marie-Tooth disease, Marfan syndrome, myotonic dystrophy, multiple endocrine neoplasia, polycystic kidney disease, and spinocerebellar ataxia.