A homozygous frameshift variant expands the clinical spectrum of SAMD9 gene defects.

Abstract excerpt

SAMD9, a ubiquitously expressed protein, is involved in several mechanisms, including endosome fusion, growth suppression and modulation of innate immune responses to stress and viral infections. While biallelic mutations in SAMD9 are linked to normophosphatemic familial tumoral calcinosis, heterozygous gain-of-function mutations in the same gene are responsible for MIRAGE, a multisystemic syndrome characterized...

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