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Hum Genet. 2010 Apr;127(4):395-401. doi: 10.1007/s00439-009-0784-9.

Mapping of a novel autosomal recessive hypotrichosis locus on chromosome 10q11.23–22.3.

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  • 1Department of Biochemistry, Faculty of Biological Sciences, Quaid-I-Azam University Islamabad, Islamabad, Pakistan.


Autosomal recessive hypotrichosis is a rare form of human genetic disorder characterized by sparse to absent hair on scalp and rest of the body of affected individuals. Over the past few years at least five autosomal recessive forms of hypotrichosis loci have been mapped on different human chromosomes. In the present study, we report localization of another novel autosomal recessive hypotrichosis locus on human chromosome 10q11.23-22.3 in a four generation consanguineous Pakistani family. All the four patients in the family showed typical features of hereditary hypotrichosis including sparse hair on the scalp and rest of the body. Human genome scan using highly polymorphic microsatellite markers mapped the disease locus to a large region on chromosome 10. This novel locus maps to 29.81 cM (28.5 Mb) region, flanked by markers D10S538 and D10S2327 on chromosome 10q11.23-22.3. A maximum multipoint LOD score of 3.26 was obtained with several markers in this region. DNA sequence analysis of exons and splice-junction sites of four putative candidate genes (P4HA1, ZNF365, ZMYND17, MYST4), located in the linkage interval, were sequenced but were negative for functional sequence variants.

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