Primary Autosomal Recessive Microcephaly (MCPH1) Maps to Chromosome 8p22-pter

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Summary

Primary (or “true”) microcephaly is inherited as an autosomal recessive trait and is thought to be genetically heterogeneous. Using autozygosity mapping, we have identified a genetic locus (MCPH1) for primary microcephaly, at chromosome 8p22-pter, in two consanguineous families of Pakistani origin. Our results indicate that the gene lies within a 13-cM region between the markers D8S1824 and D8S1825 (maximum multipoint LOD score of 8.1 at D8S277). In addition, we have demonstrated the genetic heterogeneity of this condition by analyzing a total of nine consanguineous families with primary microcephaly.

Microcephaly
Chromosome 8p22-pter
Autozygosity mapping
Heterogeneity
MCPH1

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