Distinct genotype-phenotype patterns in non-syndromic hereditary hypotrichosis: a multicenter Chinese cohort.
BACKGROUND Non-syndromic hereditary hypotrichosis (NSHH) is a genetically heterogeneous disorder characterized by sparse or absent hair growth. Comprehensive genotype-phenotype correlation analyses remain limited, particularly in the Chinese population. OBJECTIVES To define the genetic and phenotypic spectrum of NSHH...