In a patient with anosmic hypogonadotropic hypogonadism (HH16; 614897) who was heterozygous for a missense mutation in the SEMA3A gene (603961), Hanchate et al. (2012) also identified heterozygosity for a missense mutation in FGFR1. The authors concluded that their findings further substantiated the oligogenic pattern of inheritance in this developmental disorder