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Autosomal dominant hypoparathyroidism with variable, age-dependent severity.

W E Winter, J H Silverstein, N K Maclaren

    The Journal of Pediatrics
    |September 1, 1983
    PubMed
    Summary
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    This study identified hypoparathyroidism in six family members across three generations. Persistent hypoparathyroidism warrants family screening, especially after neonatal hypocalcemic seizures resolve.

    Area of Science:

    • Endocrinology
    • Genetics
    • Metabolic Disorders

    Background:

    • Hypoparathyroidism is a rare endocrine disorder characterized by low parathyroid hormone levels, leading to hypocalcemia and hyperphosphatemia.
    • Genetic factors are implicated in some forms of hypoparathyroidism, but its inheritance patterns can be complex.
    • This study investigates a familial case of hypoparathyroidism across multiple generations.

    Observation:

    • Six members from three successive generations of a single family were diagnosed with hypoparathyroidism.
    • Affected individuals presented with hypocalcemia, hyperphosphatemia, and inappropriately low serum C-terminal parathyroid hormone.
    • Two neonates experienced transient seizures, while affected adults showed no major long-term complications.

    Findings:

    Related Experiment Videos

  • The family exhibited a pattern of persistent hypoparathyroidism without associated congenital malformations or autoimmune conditions.
  • Neonatal hypocalcemic seizures resolved in two individuals, yet hypoparathyroidism persisted.
  • Adults with hypoparathyroidism remained free from significant complications like mental retardation, cataracts, or seizures.

    • Implications:

    • The findings suggest a potentially milder, non-syndromic form of familial hypoparathyroidism.
    • Persistent hypoparathyroidism after neonatal seizures should trigger comprehensive family screening.
    • Early identification and monitoring of familial hypoparathyroidism can prevent potential long-term health issues.