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Deletion mapping of chromosome 4 in head and neck squamous cell carcinoma


Genomic deletions involving chromosome 4 have recently been implicated in several human cancers. To identify and characterize genetic events associated with the development of head and neck squamous cell carinoma (HNSCC), a fine mapping of allelic losses associated with chromosome 4 was performed on DNA isolated from 27 matched primary tumor specimens and normal tissues. Loss of heterozygosity (LOH) of at least one chromosome 4 polymorphic allele was seen in the majority of tumors (92%). Allelic deletions were confined to short arm loci in four tumors and to the long arm loci in 12 tumors, suggesting the presence of two regions of common deletion. One region of frequent deletion was centered at D4S405 on 4p and included the loci D4S1546 to D4S428 in 41% of the tumors. The common region of deletion on 4q was more complex and extended from D4S1571 to D4S1573. Frequent genetic alterations were observed within this region (4q25) and one marker, D4S407, exhibited a high frequency of LOH (>75%). These results indicate that alterations of chromosome 4 regions are associated with HNSCC tumorigenesis and further localizes the regions that may harbor tumor suppressor genes.

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Correspondence to Peter A Steck.

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Pershouse, M., El-Naggar, A., Hurr, K. et al. Deletion mapping of chromosome 4 in head and neck squamous cell carcinoma. Oncogene 14, 369–373 (1997).

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  • chromosome 4
  • loss of heterozygosity
  • carcinoma

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