Abstract:
:Point mutation of the BRAF gene is a genetic event that occurs in a subset of lung adenocarcinoma cases. For example, BRAF V600E is a driver mutation that can be effectively targeted using selective BRAF and/or MEK inhibitors. The present study hypothesized that an increase in BRAF copy number may be correlated with certain clinicopathological features of lung adenocarcinoma in Japanese patients. The BRAF gene copy number was analyzed using quantitative polymerase chain reaction amplifications in 29 surgically treated lung adenocarcinoma cases without EGFR or Kras mutations from Nagoya City University Hospital (Nagoya, Japan). Seven BRAF-mutant cases were included. Increased BRAF gene copy number was identified in three lung adenocarcinoma patients (10.3%), all of which exhibited the V600E mutation. Using fluorescence in situ hybridization with BRAF-specific and chromosome 7 centromeric probes, increased copy number status was associated with gene amplification or gain of chromosome 7. Although increased BRAF copy number was correlated with BRAF V600E mutations, numerical changes in BRAF copy number were rare and mild in lung adenocarcinoma, resulting in no significant difference in pathological tumor status or tumor stage.
journal_name
Oncol Lettjournal_title
Oncology lettersauthors
Sasaki H,Maekawa M,Tatematsu T,Okuda K,Moriyama S,Yano M,Fujii Ydoi
10.3892/ol.2014.2719subject
Has Abstractpub_date
2015-02-01 00:00:00pages
709-712issue
2eissn
1792-1074issn
1792-1082pii
ol-09-02-0709journal_volume
9pub_type
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