Deletion mapping of chromosome 13q in head and neck squamous cell carcinoma in Indian patients: correlation with prognosis of the tumour.

International Journal of Experimental Pathology
Md Golam SabbirChinmay Kumar Panda

Abstract

Deletions in chromosome (chr.) 13q occur frequently in head and neck squamous cell carcinoma (HNSCC). Previous studies failed to identify common deleted regions in chr.13q, though several candidate tumour suppressor genes (TSGs) loci, e.g. BRCA2, RB1 and BRCAX have been localized in this chromosome, as well as no prognostic significance of the deletion has been reported. Thus, in the present study, deletion mapping of chr. 13q has been done in 55 primary HNSCC samples of Indian patients using 11 highly polymorphic microsatellite markers of which three were intragenic to BRCA2 gene, one intragenic to RB1 gene and another from BRCAX locus. The deletion in chr.13q was significantly associated with progression of HNSCC. High frequencies (27-39%) of loss of heterozygosity were found in 13q13.1 (BRCA2), 13q14.2 (RB1), 13q21.2-22.1 (BRCAX) and 13q31.1 regions. Deletions in the BRCA2 and RB1 regions were significantly correlated. The four highly deleted regions were associated with clinical stage and histological grades of the tumour as well as poor patient outcome. Deletion in the 13q31.1 region was only found to be associated with HPV infection. High frequencies (11-23%) of microsatellite size alteration (MA) were seen to overlap wit...Continue Reading

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Citations

Aug 14, 2010·Clinical and Experimental Medicine·Tawiwan SareebootSongsak Petmitr
Sep 9, 2008·Breast Cancer Research and Treatment·Yuan SunD Joshua Liao
Jul 14, 2012·PloS One·Mohammad Golam SabbirMichael R A Mowat
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Jun 30, 2012·Molecular Biology Reports·Maimoona SabirMahmood Akhtar Kayani

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