A New Clinical Variant of Hereditary Localized Alopecia: Report of a Chinese Family Mapped to Chromosome 2p25.1–2p23.2
hereditary localized alopecia autosomal-dominant localized alopecia chromosome 2p25.1–2p23.2 sparse scalp hair frontal and occipital areas absence of eyebrows absence of eyelashes facial freckling genome-wide scan novel locus candidate genes localized alopecia scalp hair loss eyebrow loss eyelash loss freckles genetic scan new genetic location gene candidates
TLDR A new type of hereditary hair loss in a Chinese family is linked to chromosome 2p25.1–2p23.2.
This study investigated a four-generation Chinese family with autosomal-dominant localized alopecia, involving 38 family members (13 affected, 25 unaffected). Affected individuals had sparse scalp hair in the frontal and occipital areas, and absence of eyebrows and eyelashes, but normal body, axillary, and pubic hair, along with facial freckling. A genome-wide scan identified significant linkage to chromosome 2p25.1–2p23.2, suggesting a novel locus for this form of hereditary localized alopecia. The study concluded that this condition is clinically and genetically distinct from previously described cases, with future research aimed at identifying candidate genes in the specified region.
