Noonan syndrome
Also known as Noonan's syndrome, Turner's phenotype, karyotype normal, Noonan-Ehmke syndrome, Ullrich-Noonan syndrome+1 more
Noonan's syndrome, Turner's phenotype, karyotype normal, Noonan-Ehmke syndrome, Ullrich-Noonan syndrome, pseudo-Ullrich-Turner syndrome.
What's happening now
An analyst briefing on current research, clinical, regulatory and industry activity surrounding this disease.
- 1 clinical trial expected to report results, the earliest in Q1 2027.
Clinical MilestonesViewHide
- 2026-08-01ClinicalMEK Inhibitors for the Treatment of Hypertrophic Cardiomyopathy in Patients With RASopathies (MEKinRAS) - Randomized Controlled TrialPrimary completion
- 2026-07-09ClinicalA Study Evaluating the Safety and Efficacy of Once-weekly Dosing of Somapacitan in a Basket Study Design in Paediatric Participants With Short Stature Either Born Small for Gestational Age or With Turner Syndrome, Noonan Syndrome or Idiopathic Short StatureResults posted
- 2026-05-11ClinicalA Phase 2, Randomized, Multicenter, Study of Vosoritide in Children With Noonan Syndrome With Inadequate Growth During or After Human Growth Hormone TreatmentResults expected Q1 2027
Clinical trials
The current development programme across all trial phases.
Associated genes
Genes associated with this disease in the canonical knowledge graph (Open Targets evidence). Number shows the association score.
Disease biology
Proteins whose encoding gene is associated with this disease, reached through the canonical gene→disease graph. Number shows the gene's association score.
Reference
Authoritative identity, definition & identifiers.
A genetically heterogeneous, multifaceted disorder characterized by short stature, webbed neck, ptosis, skeletal malformations, hypertelorism, hormonal imbalance, CRYPTORCHIDISM, multiple cardiac abnormalities (most commonly including PULMONARY VALVE STENOSIS), and some degree of INTELLECTUAL DISABILITY. The phenotype bears similarities to that of TURNER SYNDROME that occurs only in females and has its basis in a 45, X karyotype abnormality. Noonan syndrome occurs in both males and females with a normal karyotype (46,XX and 46,XY). Mutations in a several genes (PTPN11, KRAS, SOS1, NF1 and RAF1) have been associated the NS phenotype. Mutations in PTPN11 are the most common. LEOPARD SYNDROME, a disorder that has clinical features overlapping those of Noonan Syndrome, is also due to mutations in PTPN11. In addition, there is overlap with the syndrome called neurofibromatosis-Noonan syndrome due to mutations in NF1.
Noonan's syndrome, Turner's phenotype, karyotype normal, Noonan-Ehmke syndrome, Ullrich-Noonan syndrome, pseudo-Ullrich-Turner syndrome
- Disease identity & definition — NLM Medical Subject Headings (MeSH), public domain
- Clinical trials — ClinicalTrials.gov (U.S. National Library of Medicine)
- Related entities are derived from literature co-mention (studied together) — associative, not causal.