Syndromes with the highest number of associated genes are Kallmann (ANOS1, CHD7, DUSP6, FEZF1, FGF17, FGF8, FGFR1, FLRT3, FSHB, GNRH1, GNRHR, HS6ST1, IL17RD, KISS1, KISS1R, LHB, NDNF, NSMF, PROK2, PROKR2, SEMA3A, SPRY4, TAC3, TACR3, WDR11) and Noonan syndrome (PTPN11, KRAS, SOS1, RAF1, NRAS, BRAF, LZTR1, SOS2, and RIT1). Here, KISS1R is linked to Noonan syndrome.