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[Haplotype and linkage analysis in Chinese hereditary mixed polyposis syndrome].

[Article in Chinese]

Author information

1
Department of Gastrointestinalpancreatic Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China. surgeongi@gmail.com

Abstract

OBJECTIVE:

To investigate if hereditary mixed polyposis syndrome (HMPS) locus of two Singapore Chinese HMPS families is identical with the Ashkenazi families.

METHODS:

Genomic DNA was extracted, multiplex polymerase chain reaction (PCR) was used to amplify 4 microsatellite markers D15S1010, D15S1007, ACTC and D15S118 in 31 individuals from two families. The HMPS locus cosecretion of the markers on 15q13 over a region of 2.8 cM was confirmed by Haplotype and linkage analysis.

RESULTS:

The disease of haplotype identified in one pedigree was not co-segregated with an affected individual while no definitive disease haplotype could be assigned for the second pedigree. The maximum two-point and multi-point LOD scores at ACTC for the two Chinese families are 0.20 (theta = 0.3) and -5.0 respectively.

CONCLUSIONS:

Haplotype and linkage analysis indicate that the Ashkenazi haplotypes is not associated with HMPS in Singapore Chinese families, which suggests genetic heterogeneity.

PMID:
16167249
[Indexed for MEDLINE]

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