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Xp21 contiguous gene deletion syndrome presenting as congenital adrenal hypoplasia: molecular diagnosis and clinical re-evaluation of a pedigree

Source: Frontiers - Health • Published: 28 Aug 2026, 00:00

Xp21 contiguous gene deletion syndrome presenting as congenital adrenal hypoplasia: molecular diagnosis and clinical re-evaluation of a pedigree

This clinical-genetic report examines a male infant misdiagnosed with congenital adrenal hyperplasia and reveals an Xp21 contiguous gene deletion causing X-linked adrenal hypoplasia.

Key Takeaways
  • Adrenal insufficiency resulted from X-linked congenital adrenal hypoplasia (AHC)
  • Neonatal adrenal insufficiency with salt-wasting crisis is life-threatening ( 1 , 2 )
  • AHC is primarily caused by defects in the NR0B1 (DAX1)
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