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  • Title: Familial split hand/split foot long bone deficiency does not segregate with markers linked to the SHFD1 locus in 7q21.3-q22.1.
    Author: Marinoni JC, Boyd E, Sherman S, Schwartz C.
    Journal: Hum Mol Genet; 1994 Aug; 3(8):1355-7. PubMed ID: 7987314.
    Abstract:
    Ectrodactyly (split hand/split foot, SHSF) is characterized by the absence of middle rays of the hand or the foot. Cytogenetic analyses of some of the cases have indicated an association between chromosomal rearrangements involving 7q21.3-q22 and ectrodactyly. Based on these observations, an autosomal dominant form of ectrodactyly is assumed to reside in this region and the locus has been designated SHFD1 (split hand/split foot disorder). Here we report a large family where split hand/split foot long bone deficiency (SHFLD) segregates in an autosomal dominant mode. Linkage analysis, using microsatellite markers located in 7q21-q22, excludes this region from containing the gene responsible for SHFLD in this family. These results would appear to indicate genetic heterogeneity exists in autosomal dominant SHSF.
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