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Hum Immunol. 1992 May;34(1):19-23.

HLA genotyping of colorectal carcinoma in the Chinese population.

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  • 1UK Transplant Support Service Authority, Bristol, London, England.


The HLA-DR genotypes of 61 primary colorectal carcinomas obtained from patients of Chinese origin were determined by using DNA-RFLP. No increase or decrease of a particular HLA genotype could be ascertained with the disease, although we detected an antigen frequency of 29.5% for the serologically ill-defined DR"X3" specificity. We identified and sequenced HLA-DRB1 and DRB3 genes from the DR"X3" haplotype. The DR"X3" DRB1 gene was found to be identical to DRB1*1201 (DR5[w12]). A unique observation is its unusual linkage with DRB3*0101 (DRw52a) or DRB3*0301 (DRw52c) instead of the usual linkage with DRB3*0201/2 (DRw52b). These associations are rare in whites and blacks.

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