Article,

Linkage studies with the gene for an X-linked syndrome of mental retardation, microcephaly and spastic diplegia (MRX2)

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Am J Med Genet, 30 (1-2): 493--508 (1988)

Abstract

A family in which a gene (MRX2) is segregating for an X-linked syndrome of mental retardation, short stature, microcephaly, brachycephaly, spastic diplegia, small testes and possible intra-uterine growth retardation is described. There are 7 clearly affected males and one possibly affected infant in the family. The obligate carriers are normal. Linkage studies show a suggestion of linkage to loci near the centromere. The maximum lod score was 2.10 at theta = 0.11 for DXYS1, assuming the possibly affected male carried the MRX2 gene. There were lower lod scores suggestive of linkage with DXS7 (theta = 0.14; z = 1.29) and DXS94 (theta = 0.11; z = 1.22).

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