Abstract:
:Adenoid cystic carcinoma (ACC) of the salivary glands exhibits persistent growth, invasion and metastasis. Chromosome 11q13 amplification is a frequent event associated with tumor progression in a number of carcinomas and is associated with poor prognosis. Two genes within the 11q13 amplicon that are overexpressed as a result of 11q13 amplification are the cell cycle regulatory protein cyclin D1 (CCND1) and cortactin (CTTN), a protein involved cell motility and invasion. To determine the expression and gene status of cyclin D1 and cortactin in ACC, we evaluated 39 ACC cases by immunohistochemistry (IHC) for cyclin D1 and cortactin expression. Amplification of CCND1 and CTTN was determined by fluorescent in situ hybridization (FISH). Cyclin D1 overexpression was present in 90% (35/39) and cortactin expression in 62% (24/39) of evaluated cases, although CCND1 and CTTN levels were elevated in only two cases (5%) as determined by FISH. Our results indicate that chromosome 11q13 amplification is uncommon in ACC, but that cyclin D1 and cortactin are frequently overexpressed and may therefore contribute to the growth and invasive potential of ACC.
journal_name
Oral Oncoljournal_title
Oral oncologyauthors
Greer RO Jr,Said S,Shroyer KR,Marileila VG,Weed SAdoi
10.1016/j.oraloncology.2006.09.007subject
Has Abstractpub_date
2007-09-01 00:00:00pages
735-41issue
8eissn
1368-8375issn
1879-0593pii
S1368-8375(06)00250-8journal_volume
43pub_type
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