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Japanese Journal of Clinical Oncology, Vol 29, Issue 11 535-540, Copyright © 1999 by Foundation for Promotion of Cancer Research

ORIGINAL ARTICLE

Frequency of HLA-A alleles in Japanese patients with head and neck cancer

M Eura, F Katsura, M Oiso, A Obata, K Nakano, K Masuyama and T Ishikawa
Department of Otolaryngology, Kumamoto University School of Medicine, Japan. eura@gpo.kumamoto-u.ac.jp

BACKGROUND: Association between certain human leukocyte antigen (HLA) types such as HLA-A1 and -A3 and squamous cell carcinoma of the head and neck (SCCHN) has been demonstrated in the Caucasian population. HLA typings in these studies were performed by conventional serological methods. However, recent comparison studies between serological and molecular typings have revealed that the former are often inaccurate. METHODS: The frequency of HLA-A alleles in 100 Japanese patients with SCCHN and 100 control subjects was determined by the polymerase chain reaction, with primers specific for the HLA-A locus, in combination with dot-blot hybridization with 31 sequence-specific oligonucleotides. RESULTS: The frequencies of HLA-A*2602 and HLA-A*3303 were higher and those of HLA-A*2603 and HLA-A*3101 were lower in the patients with SCCHN than in healthy controls, but these differences were not statistically significant. In the 39 male patients with laryngeal carcinoma, the most common malignancies in Japanese patients with SCCHN, the frequency of HLA-A*2402 was significantly lower than that in the 80 male controls; however, after correction of the P value, statistical significance was not confirmed. In oral carcinoma patients, the frequency of HLA-A*2402 was significantly higher than that in healthy controls. CONCLUSIONS: These results suggest that the contribution of certain HLA-A alleles to susceptibility to SCCHN may differ between sites in the head and neck regions, despite these cancers being of an identical histological type, and that HLA-A*2402 may influence the development of oral carcinoma in Japanese patients.
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