Clinical Report: Cardiac Abnormalities in CAH Patients with TNXB Deficiency

Overview

This study identifies a 5% prevalence of CAH-X syndrome in a Munich cohort of congenital adrenal hyperplasia (CAH) patients, revealing significant cardiac abnormalities such as persistent truncus arteriosus and diastolic relaxation disorder. The findings underscore the need for genetic and clinical screening in this population.

Background

Congenital adrenal hyperplasia (CAH) is a genetic disorder affecting adrenal hormone production, and its association with Tenascin-X gene deficiency (CAH-X syndrome) can lead to severe clinical manifestations, including cardiovascular issues. Understanding the prevalence and implications of CAH-X is crucial for improving patient management and outcomes, particularly in light of the potential for under-recognized cardiac abnormalities.

Data Highlights

Key Findings

• 5% of the studied CAH cohort were identified as CAH-X positive.
• Increased muscle echogenicity was observed in CAH-X patients compared to matched controls.
• Cardiac abnormalities associated with CAH-X included persistent truncus arteriosus and relaxation disorders.
• Reduced circulating sTNXB protein levels correlated with clinical findings in CAH-X patients.
• Regular follow-up examinations are essential for managing CAH-X syndrome.

Clinical Implications

Clinicians should consider routine genetic screening for CAH-X in patients with congenital adrenal hyperplasia, given the identified cardiac risks. Regular echocardiographic evaluations are recommended to monitor for potential cardiac abnormalities in this population.

Conclusion

The study highlights the importance of genetic and clinical screening for CAH-X syndrome in CAH patients, particularly due to the associated cardiac abnormalities that may require ongoing management.

Related Resources & Content

1. Frontiers | Novel cardiac abnormalities observed in CAH patients with Tenascin-X haploinsufficiency, 2026 -- Novel cardiac abnormalities observed in CAH patients with Tenascin-X haploinsufficiency
2. Congenital Adrenal Hyperplasia Guideline Resources | Endocrine Society -- Congenital Adrenal Hyperplasia Guideline Resources
3. Endocrine Reviews -- Cardiometabolic Aspects of Congenital Adrenal Hyperplasia, 2023 -- Cardiometabolic Aspects of Congenital Adrenal Hyperplasia
4. Pediatric Cardiology — Cardiac and Non-Cardiac Anomalies Linked to Abnormal Coronary Artery Originating from the Pulmonary Artery
5. Clinical Research in Cardiology — Rare instance of cardiac ATTR amyloidosis associated with situs inversus totalis
6. Pediatric Cardiology — Coronary Artery Anomaly Originating from the Incorrect Sinus in a 15-Year-Old Male Patient
7. Congenital Adrenal Hyperplasia Guideline Resources | Endocrine Society
8. Frontiers | Novel cardiac abnormalities observed in CAH patients with Tenascin-X haploinsufficiency
9. Arterial stiffness and shortened QTc interval are associated with androgen and ACTH levels in classic congenital adrenal hyperplasia - PubMed