DSG4 and hypotrichosis 7: In addition, three new genes were identified in patients with autosomal recessive hypotrichosis, including DSG4 mapped to 18q12,1, LIPH to 3q27.3, and P2RY5 to 13q14.11-13q21.33 (Kljuic et al., 2003; Kazantseva et al., 2006; Pasternack et al., 2008).