• J Exp Clin Canc Res · May 2013

    Detection of E2A-PBX1 fusion transcripts in human non-small-cell lung cancer.

    • Min-Li Mo, Zhao Chen, Hai-Meng Zhou, Hui Li, Tomomi Hirata, David M Jablons, and Biao He.
    • School of Life Sciences, Tsinghua University, Beijing 10084, China.
    • J Exp Clin Canc Res. 2013 May 20; 32: 29.

    BackgroundE2A-PBX1 fusion gene caused by t(1;19)(q23;p13), has been well characterized in acute lymphoid leukemia (ALL). There is no report on E2A-PBX1 fusion transcripts in non-small-cell lung cancer (NSCLC).MethodsWe used polymerase chain reaction (PCR) to detect E2A-PBX1 fusion transcripts in human NSCLC tissue specimens and cell lines. We analyzed correlation of E2A-PBX1 fusion transcripts with clinical outcomes in 76 patients with adenocarcinoma in situ (AIS) and other subgroups. We compared mutation status of k-ras, p53 and EGFR in 22 patients with E2A-PBX1 fusion transcripts.ResultsWe detected E2A-PBX1 transcripts in 23 of 184 (12.5%) NSCLC tissue specimens and 3 of 13 (23.1%) NSCLC cell lines. Presence of E2A-PBX1 fusion transcripts correlated with smoking status in female patients (P=0.048), AIS histology (P=0.006) and tumor size (P=0.026). The overall survival was associated with gender among AIS patients (P=0.0378) and AIS patients without E2A-PBX1 fusion transcripts (P=0.0345), but not among AIS patients with E2A-PBX1 fusion transcripts (P=0.6401). The overall survival was also associated with status of E2A-PBX1 fusion transcripts among AIS stage IA patients (P=0.0363) and AIS stage IA female patients (P=0.0174). In addition, among the 22 patients with E2A-PBX1 fusion transcripts, 12 (54.5%) patients including all four non-smokers, showed no common mutations in k-ras, p53 and EGFR.ConclusionsE2A-PBX1 fusion gene caused by t(1;19)(q23;p13) may be a common genetic change in AIS and a survival determinant for female AIS patients at early stage.

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