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Features include common findings: Thyroid hypoplasia. 5 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Hormones | 3 | Inappropriately normal thyroid-stimulating hormone level, Thyroid hypoplasia, Central hypothyroidism |
Growth and development |
IRS4 encodes insulin receptor substrate 4 (1,257 aa). Acts as an interface between multiple growth factor receptors possessing tyrosine kinase activity, such as insulin receptor, IGF1R and FGFR1, and a complex network of intracellular signaling molecules containing SH2 domains. Highest expression in Pituitary (9.5 TPM) and Ovary (2.7 TPM).
Hypothyroidism, congenital, nongoitrous, 9 is associated with mutations in the IRS4 gene on chromosome X.
The IRS4 protein participates in IRS-related events triggered by IGF1R pathway.
IRS4 is classified as a druggable target (Kinase category) with score 3.3.
Genetic testing for IRS4 is available. Testing is considered confirmatory for diagnosis.
Phenotype severity distribution: 1 common feature.
No clinical trials have been registered for hypothyroidism, congenital, nongoitrous, 9.
1 publication has been identified in PubMed for hypothyroidism, congenital, nongoitrous, 9. Research spans Review / Meta-Analysis (100%).
Narumi S (2024). [PMID: 39506342](https://pubmed.ncbi.nlm.nih.gov/39506342/). *Ann Pediatr Endocrinol Metab*. [Review / Meta-Analysis]
Data assembled from 5 of 12 sources · Last updated Sep 19, 2026, 6:56 PM UTC
Online Mendelian Inheritance in Man
1 |
Short stature |