“…Signs observed only in their propositus were sparse scalp hair, hypospadias, delayed bone age, hypotonia, and delayed development. This phenotype was later named Say syndrome [Emery and Rimoin, 1990], and 3 additional reports were published [Abu-Libdeh et al, 1993;Ashton-Prolla and Félix, 1997;Guion-Almeida et al, 1998], all of isolated cases (with one case of discordance in monozygotic twins), referred to as probable new mutations.…”