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Ruvalcaba syndrome: autosomal dominant inheritance.

Y Sugio, T Kajii

    American Journal of Medical Genetics
    |December 1, 1984
    PubMed
    Summary

    Ruvalcaba syndrome, a genetic disorder, affects multiple generations with distinct facial features and growth issues. Autosomal dominant inheritance with variable expressivity is confirmed, ruling out X-linked inheritance.

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    Area of Science:

    • Genetics
    • Clinical Medicine
    • Human Physiology

    Background:

    • Ruvalcaba syndrome is a rare genetic disorder.
    • Characterized by distinctive facial morphology and growth abnormalities.

    Observation:

    • A kinship study identified nine affected individuals across four generations.
    • Key features include postnatal growth retardation, oval face, antimongoloid slant, beaked nose, downturned mouth, pointed chin, and short digits.
    • Less common findings include vertebral osteochondritis and epiphyseal/metaphyseal abnormalities.

    Findings:

    • The syndrome exhibits autosomal dominant inheritance with variable expressivity and incomplete penetrance.
    • Male-to-male transmission observed, excluding X-linked inheritance patterns.
    • Affected individuals did not present with intellectual disability.

    Implications:

    • Understanding the inheritance pattern aids in genetic counseling and diagnosis.
    • Further research can elucidate the specific genes and molecular mechanisms underlying Ruvalcaba syndrome.
    • Recognition of variable expressivity is crucial for accurate clinical assessment.

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