RESUMO
An 18 year old female with multiple ocular disorders showed more or less cardinal features similar to that of an autosomal dominantly inherited Marfan Syndrome. Related features with variable symptoms were seen in her sibs. Major and minor manifestations of MFS like cardio-vascular, respiratory problems, spine deformities, arachnodactyly were not observed. Pedigree analysis showed high incidence of consanguinity.
RESUMO
In the genealogical investigation into 1210 patients with alopecia areata(AA), we found 75 cases with a positive family history of AA, the familial incidence was 6.2%. The incidence of AA in the 75 families (1093 cases) was 14.91% (163 cases). In these families, there were 142 patients in first-grade relatives of the family members, 17 in second-grade, and 4 in third-grade. We observed 70 cases in 33 families within one generation, 87 cases in 40 families within two succesive generations, and 6 cases in 2 families within three successive generations, four pairs of monozygotic twins appeared in this investigation, but just one of each pair was affected. The relationship between pathogenesis of AA and genetic factor has been discussed.