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Proc Natl Acad Sci U S A. 2013 May 7;110(19):7790-5. doi: 10.1073/pnas.1216412110. Epub 2013 Apr 19.

Position effect on FGF13 associated with X-linked congenital generalized hypertrichosis.

Author information

1
Departments of Genetics and Development, Columbia University, New York, NY, USA.

Abstract

X-linked congenital generalized hypertrichosis (Online Mendelian Inheritance in Man 307150) is an extremely rare condition of hair overgrowth on different body sites. We previously reported linkage in a large Mexican family with X-linked congenital generalized hypertrichosis cosegregating with deafness and with dental and palate anomalies to Xq24-27. Using SNP oligonucleotide microarray analysis and whole-genome sequencing, we identified a 389-kb interchromosomal insertion at an extragenic palindrome site at Xq27.1 that completely cosegregates with the disease. Among the genes surrounding the insertion, we found that Fibroblast Growth Factor 13 (FGF13) mRNA levels were significantly reduced in affected individuals, and immunofluorescence staining revealed a striking decrease in FGF13 localization throughout the outer root sheath of affected hair follicles. Taken together, our findings suggest a role for FGF13 in hair follicle growth and in the hair cycle.

KEYWORDS:

congenital hypertrichosis; excessive hair growth

PMID:
23603273
PMCID:
PMC3651487
DOI:
10.1073/pnas.1216412110
[Indexed for MEDLINE]
Free PMC Article

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