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Spinal dysraphism: genetic relation to neural tube malformations

C O Carter, K A Evans, K Till

    Journal of Medical Genetics
    |October 1, 1976
    PubMed

    Insights

    Mothers of children with spinal dysraphism should consider prenatal screening for neural tube defects. This study found a higher incidence of anencephaly and spina bifida in siblings of affected children.

    Area of Science:

    • Pediatric Neurology
    • Medical Genetics
    • Developmental Biology

    Background:

    • Spinal dysraphism encompasses a range of congenital anomalies.
    • The etiological relationship between spinal dysraphism and classical neural tube malformations remains an area of investigation.

    Purpose of the Study:

    • To investigate the etiological link between spinal dysraphism and neural tube malformations (anencephaly, spina bifida cystica).
    • To assess the recurrence risk of neural tube malformations in families with spinal dysraphism.

    Main Methods:

    • Retrospective study of 207 index patients with spinal dysraphism.
    • Analysis of family history, specifically focusing on sibs of index patients for neural tube malformations.

    Main Results:

    • A significant proportion (4.12%) of sibs of index patients exhibited anencephaly or spina bifida cystica.
    • The observed recurrence rate in siblings approximates that seen in families with isolated neural tube defects.

    Conclusions:

    • The findings suggest a potential shared etiology between spinal dysraphism and classical neural tube malformations.
    • Prenatal screening for neural tube malformations is recommended for mothers with a history of spinal dysraphism in their children.

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