Overview
17α-Hydroxylase/17,20-lyase deficiency (17-OHD) is a rare genetic disorder caused by pathogenic variants in the CYP17A1 gene, leading to impaired steroid hormone production. This results in clinical features including hypertension, hypokalemia, and disorders of sexual development 1.Diagnosis
Genetic Testing: Identification of homozygous pathogenic variants in the CYP17A1 gene 1.
Clinical Presentation: Hypertension (57.0%), hypokalemia (45.4%), primary amenorrhea (38.3%) 1.
Biochemical Markers: Elevated ACTH and suppressed cortisol levels, elevated 17-hydroxyprogesterone 1.
Imaging: Not specifically detailed in provided abstracts.Management
Hormone Replacement Therapy: Corrective replacement with glucocorticoids and mineralocorticoids tailored to clinical presentation 1.
Blood Pressure Control: Use of antihypertensive medications to manage hypertension 1.
Electrolyte Management: Potassium supplementation to address hypokalemia 1.
Sexual Development Support: Hormonal interventions to manage disorders of sexual development 1.Special Populations
Pediatrics: Early diagnosis and intervention crucial for normal development; tailored hormone replacement therapy 1.
Pregnancy: Not specifically addressed in provided abstracts.
Elderly: Management focuses on chronic condition control with hormone replacement and blood pressure management 1.
Comorbidities: Specific management strategies for comorbidities like cardiovascular issues require individualized care plans 1.Key Recommendations
Genetic Testing for Diagnosis: Confirm diagnosis through genetic testing for CYP17A1 variants (Evidence: Strong 1).
Tailored Hormone Replacement Therapy: Implement individualized hormone replacement therapy addressing deficiencies in glucocorticoids and mineralocorticoids (Evidence: Moderate 1).
Comprehensive Monitoring: Regular monitoring of blood pressure, electrolytes, and sexual development milestones (Evidence: Expert opinion 1).References
1 Willemsen AL, Torpy DJ, De Sousa SMC, Falhammar H, Rushworth RL. 17α-Hydroxylase/17,20-lyase Deficiency (17-OHD): A Meta-analysis of Reported Cases. The Journal of clinical endocrinology and metabolism 2025. link
2 Bai Y, Muragaki Y, Obata K, Iwata K, Ooshima A. Immunological properties of monoclonal antibodies to human and rat prolyl 4-hydroxylase. Journal of biochemistry 1986. link