Conflicts of interest None declared.
Mutations in the P2RY5 gene underlie autosomal recessive hypotrichosis in 13 Pakistani families
Article first published online: 9 MAR 2009
© 2009 The Authors. Journal Compilation © 2009 British Association of Dermatologists
British Journal of Dermatology
Volume 160, Issue 5, pages 1006–1010, May 2009
How to Cite
Tariq, M., Ayub, M., Jelani, M., Basit, S., Naz, G., Wasif, N., Raza, S.I., Naveed, A.K., Ullah Khan, S., Azeem, Z., Yasinzai, M., Wali, A., Ali, G., Chishti, M.S. and Ahmad, W. (2009), Mutations in the P2RY5 gene underlie autosomal recessive hypotrichosis in 13 Pakistani families. British Journal of Dermatology, 160: 1006–1010. doi: 10.1111/j.1365-2133.2009.09046.x
M.T., M.A., M.J., S.B., G.N. and N.W. have contributed equally to this work.
- Issue published online: 14 APR 2009
- Article first published online: 9 MAR 2009
- Accepted for publication 9 November 2008
- autosomal recessive hypotrichosis;
- novel and recurrent mutations;
- P2RY5 gene
Background Autosomal recessive hypotrichosis is a rare genetic irreversible hair loss characterized by sparse scalp hair, sparse to absent eyebrows and eyelashes, and sparse axillary and body hair. Affected male individuals have normal beard hair.
Objectives To search for pathogenic mutations in the human P2RY5 gene in Pakistani families with autosomal recessive hereditary hypotrichosis.
Methods In the present report, 16 unrelated consanguineous Pakistani families having multiple affected individuals with autosomal recessive hypotrichosis were investigated. Linkage in these families was searched by genotyping microsatellite markers linked to autosomal recessive hypotrichosis loci LAH1, LAH2 and LAH3. Thirteen of the families showed linkage to the LAH3 locus on chromosome 13q14.11–q21.32. These families were then subjected to direct sequencing of the P2RY5 gene, which encodes a G protein-coupled receptor.
Results Sequence analysis of the P2RY5 gene revealed two novel missense mutations (c.742A>T; p.N248Y and c.830C>T; p.L277P) in three families. Five previously described mutations including three missense (c.188A>T; p.D63V, c.436G>A; p.G146R, c.562A>T; p.I188F), one insertion (c.69insCATG; p.24insHfsX52) and one complex deletion (c.172–175delAACT; 177delG; p.N58–L59delinsCfsX88) were detected in the other 10 families.
Conclusions Mutations revealed in the present study extend the body of evidence implicating the P2RY5 gene in the pathogenesis of human hereditary hair loss.