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Familial 46,XX gonadal dysgenesis.

J A Portuondo, J L Neyro, J A Benito

    International Journal of Fertility
    |January 1, 1987
    PubMed
    Summary

    Two sisters experienced primary amenorrhea due to streak gonad syndrome, despite a normal 46,XX karyotype. This suggests a potential autosomal recessive inheritance pattern for XX gonadal dysgenesis in familial cases.

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    Area of Science:

    • Reproductive Endocrinology
    • Human Genetics
    • Developmental Biology

    Background:

    • Primary amenorrhea is a significant reproductive health concern.
    • Gonadal dysgenesis can occur in individuals with a 46,XX karyotype.
    • Understanding the genetic basis of gonadal dysgenesis is crucial for diagnosis and counseling.

    Observation:

    • Two sisters, aged 18 and 25, presented with primary amenorrhea.
    • Both patients exhibited normal stature and lacked somatic stigmata.
    • Peripheral blood cytogenetic analysis revealed a normal 46,XX karyotype in both individuals.

    Findings:

    • Pathologic and hormonal evaluations indicated streak gonads.
    • One patient had a limited number of primordial follicles.
    • Hormonal profiles (FSH, LH, urinary estrogens) were consistent with streak gonad syndrome.
    • Autosomal recessive inheritance is proposed for familial XX gonadal dysgenesis.

    Implications:

    • This case highlights the importance of comprehensive evaluation for primary amenorrhea, even with a normal karyotype.
    • The findings support the hypothesis of autosomal recessive inheritance in certain familial forms of XX gonadal dysgenesis.
    • Further research into the genetic factors underlying XX gonadal dysgenesis is warranted.

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