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Related Experiment Videos

A family with syndactyly type II (synpolydactyly).

M A Ridler, R Laxova, K Dewhurst

    Clinical Genetics
    |October 1, 1977
    PubMed
    Summary

    Syndactyly Type II, a genetic malformation, presents varied gene expression across four generations. Diagnostic features and linkage data for Syndactyly II were analyzed, revealing no close link to common blood group genes.

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    Area of Science:

    • Medical Genetics
    • Human Genetics
    • Clinical Delineation

    Background:

    • Syndactyly Type II, also known as)'Poland anomaly', is a congenital malformation characterized by webbing of the fingers or toes.
    • This study investigates the genetic basis and clinical presentation of Syndactyly Type II within a large, multi-generational family.

    Observation:

    • Eight family members across four generations exhibited Syndactyly Type II.
    • Two distinct patterns of gene expression variation were observed among affected individuals.
    • Severe manifestations of the malformation were associated with distorted dermatoglyphic patterns, unlike milder cases.

    Findings:

    • Linkage analysis indicated that the gene responsible for Syndactyly II is not closely linked to the loci for ABO, MNSs, P, Rh, and Kell blood group systems.
    • The study discusses the diagnostic significance of identifying minimal clinical features of Syndactyly Type II.

    Implications:

    • Understanding the variable gene expression in Syndactyly Type II can aid in more accurate diagnosis and genetic counseling.
    • The findings contribute to the genetic mapping of Syndactyly Type II, excluding linkage to several common blood group loci.

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