Abstract
We have analyzed allelic loss of the short arm of chromosome 9 in 39 head and neck cancers using 13 polymorphic markers and found two deletions of hot spots at 9p21 and 9p24. Loss of heterozygosity was detected at least at one locus in 28 of 39 cases (71.8%). P16, a well-known tumor suppressor gene, is considered to be a target for deletion of the 9p21 region. However, novel frequent chromosomal deletion and a candidate tumor suppressor gene, BRM at the 9p24 region, were detected. Moreover, comparison of clinicopathological variables demonstrated that loss of heterozygosity at the BRM locus was associated with a worse prognosis.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Aged
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Carcinoma, Squamous Cell / genetics*
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Carcinoma, Squamous Cell / mortality
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Carcinoma, Squamous Cell / pathology
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Carcinoma, Squamous Cell / therapy
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Chromosomes, Human, Pair 9*
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Disease-Free Survival
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Female
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Gene Expression Regulation, Neoplastic*
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Genes, Tumor Suppressor*
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Genotype
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Head and Neck Neoplasms / genetics*
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Head and Neck Neoplasms / mortality
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Head and Neck Neoplasms / pathology
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Head and Neck Neoplasms / therapy
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Humans
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Kaplan-Meier Estimate
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Loss of Heterozygosity*
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Male
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Microsatellite Repeats
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Middle Aged
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Phenotype
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Transcription Factors / genetics*
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Treatment Outcome
Substances
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SMARCA2 protein, human
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Transcription Factors