Hereditary hypotrichosis simplex is a rare form of hereditary hair loss in humans, where the hair follicle is miniaturized. Now, the gene involved has been identified, using genetic linkage analysis in three affected families. The gene, APCDD1, is expressed in human hair follicles. It encodes a previously unknown membrane-bound glycoprotein that inhibits signalling through the Wnt protein and functions upstream of β-catenin.
- Yutaka Shimomura
- Dritan Agalliu
- Angela M. Christiano
