disease has basis in dysfunction of PTPN11 Noonan syndrome 1 DOID:0060578 GARD:0007223 MONDO:0008104 Male Turner syndrome NCIT:C75459 NS1 Noonan syndrome Noonan syndrome 1 Noonan syndrome caused by mutations in the PTPN11 gene. Noonan syndrome type 1 OMIM:163950 Turner phenotype with normal karyotype female pseudo-Turner syndrome pterygium colli syndrome Noonan syndrome