Dlova NC, Jordaan FH, Sarig O, Sprecher E. Autosomal dominant inheritance of central centrifugal cicatricial alopecia in black South Africans. J Am Acad Dermatol. 2014 Apr;70(4):679-682.e1. PMID: 24480456.
J Am Acad Dermatol. 2014 Apr;70(4):679-682.e1. doi: 10.1016/j.jaad.2013.11.035. Epub 2014 Jan 27.
Autosomal dominant inheritance of central centrifugal cicatricial alopecia in black South Africans.
Dlova NC(1), Jordaan FH(2), Sarig O(3), Sprecher E(4).
BACKGROUND: Central centrifugal cicatricial alopecia (CCCA) is the commonest type of primary scarring alopecia in women of African descent. Little is currently known about the disease genetics.
OBJECTIVE: We sought to investigate patterns of inheritance in CCCA and ascertain the contribution of nongenetic factors such as hair-grooming habits to the pathogenesis of the disease.
METHODS: Affected individuals with at least 1 available family member were recruited from 2005 through 2012 inclusive for pedigree analysis. CCCA was diagnosed on clinical and histopathological grounds.
RESULTS: Fourteen index African families with 31 immediate family members participated in the initial screening. The female to male ratio was 29:2 with an average age of 50.4 years. All patients displayed histologic features typical for CCCA. Pedigree analysis suggested an autosomal dominant mode of inheritance. Hair-grooming habits were found to markedly influence disease expression.
LIMITATIONS: Small number of patients is a limitation.
CONCLUSION: CCCA can be inherited in an autosomal dominant fashion, with partial penetrance and a strong modifying effect of hairstyling and gender.
Copyright © 2014 American Academy of Dermatology, Inc. Published by Mosby, Inc.
PMID: 24480456 [PubMed - indexed for MEDLINE]