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Inherited isolated adrenal insufficiency due to partial CYP11A1 deficiency is a rare, genetic, chronic, primary adrenal insufficiency disorder, due to partial loss-of-function CYP11A1 mutations, characterized by early-onset adrenal insufficiency without associated abnormal external male genitalia. Patients present with signs of adrenal crisis, including electrolite abnormalities, severe weakness, recurrent vomiting and seizures. Ultrasound reveals absent (or very small) adrenal glands.
Features include very common findings: Cryptorchidism, Ambiguous genitalia, male, Male pseudohermaphroditism, and Renal salt wasting and others; and common findings: Adrenal hypoplasia, Premature birth, Elevated circulating follicle stimulating hormone level, and Elevated circulating luteinizing hormone level. 51 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Hormones | 5 | Delayed puberty, Decreased circulating cortisol level, Primary adrenal insufficiency |
Phenotype severity distribution: 43 very common features, 4 common features.
Estimated prevalence: Unknown (Unknown prevalence).
No clinical trials have been registered for inherited isolated adrenal insufficiency due to partial CYP11A1 deficiency.
4 publications have been identified in PubMed for inherited isolated adrenal insufficiency due to partial CYP11A1 deficiency. Research spans Review / Meta-Analysis (100%).
İsakoca M (2025). [PMID: 39713884](https://pubmed.ncbi.nlm.nih.gov/39713884/). *Journal of clinical research in pediatric endocrinology*. [Review / Meta-Analysis]
Varughese R (2025). [PMID: 39891580](https://pubmed.ncbi.nlm.nih.gov/39891580/). *Endocrine reviews*. [Review / Meta-Analysis]
Cetin SK (2025). [PMID: 40353455](https://pubmed.ncbi.nlm.nih.gov/40353455/). *Turkish archives of pediatrics*. [Review / Meta-Analysis]
Slominski RM (2024). [PMID: 38927967](https://pubmed.ncbi.nlm.nih.gov/38927967/). *Cancers*. [Review / Meta-Analysis]
Data assembled from 4 of 12 sources · Last updated Sep 20, 2026, 9:35 PM UTC
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Lab test results | 4 | Increased circulating renin concentration, Decreased circulating cortisol level, Elevated circulating follicle stimulating hormone level |
Bones and joints | 3 | Weak and brittle bones (osteoporosis), Delayed skeletal maturation, Low bone density (reduced bone mineral density) |
Digestive system | 3 | Vomiting, Abnormal cholesterol levels (abnormal circulating cholesterol concentration), Feeding difficulties |
Pregnancy and birth | 2 | Abnormality of prenatal development or birth, Neonatal hypoglycemia |
Skin | 2 | Generalized hyperpigmentation, Generalized bronze hyperpigmentation |
Kidneys and urinary system | 1 | Renal salt wasting |
Muscles | 1 | Renal salt wasting |
Growth and development | 1 | Failure to thrive |