Abstract:
BACKGROUND:Abnormalities in chromosome 11q13 regions have been frequently found in head and neck squamous carcinoma. Recent studies indicate that the PRAD-1 (also CCND1), which encodes cyclin D1, is a putative oncogene that is an important component of this region. METHODS:DNA was extracted from 32 snap-frozen specimens from primary head and neck squamous carcinomas. DNA from peripheral blood lymphocytes, normal mucosa, and salivary gland tissue were used as controls. A genomic DNA probe containing the first exon of PRAD-1 was used for hybridization with specimen DNAs by the Southern technique. A 5.6-kb genomic DNA probe of immunoglobulin heavy chain was used as an internal standard for assessing PRAD-1 amplification. RESULTS:Eleven (34.4%) squamous carcinoma specimens showed PRAD-1 amplification (2- to 10-fold). Although no significant statistical correlation among amplification status, grade stage, and DNA ploidy was observed in this small cohort, amplification was more noted in high grade, high stage, and aneuploid tumors. A highly statistical correlation between PRAD-1 amplification and proliferative activity was noted (P > 0.001). CONCLUSION:The results of this study indicate that PRAD-1 amplification appears to be a late event in the tumorigenesis of head and neck carcinoma and is associated often with a subset of aggressive tumors and high proliferation neoplasms.
journal_name
Cancerjournal_title
Cancerauthors
Callender T,el-Naggar AK,Lee MS,Frankenthaler R,Luna MA,Batsakis JGdoi
10.1002/1097-0142(19940701)74:1<152::aid-cncr28207subject
Has Abstractpub_date
1994-07-01 00:00:00pages
152-8issue
1eissn
0008-543Xissn
1097-0142journal_volume
74pub_type
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