|Publication Type||Journal Article|
|Year of Publication||2007|
|Authors||Weir, BA, Woo, MS, Getz, G, Perner, S, Ding, L, Beroukhim, R, Lin, WM, Province, MA, Kraja, A, Johnson, LA, Shah, K, Sato, M, Thomas, RK, Barletta, JA, Borecki, IB, Broderick, S, Chang, AC, Chiang, DY, Chirieac, LR, Cho, J, Fujii, Y, Gazdar, AF, Giordano, T, Greulich, H, Hanna, M, Johnson, BE, Kris, MG, Lash, A, Lin, L, Lindeman, N, Mardis, ER, McPherson, JD, Minna, JD, Morgan, MB, Nadel, M, Orringer, MB, Osborne, JR, Ozenberger, B, Ramos, AH, Robinson, J, Roth, JA, Rusch, V, Sasaki, H, Shepherd, F, Sougnez, C, Spitz, MR, Tsao, MS, Twomey, D, Verhaak, RG, Weinstock, GM, Wheeler, DA, Winckler, W, Yoshizawa, A, Yu, S, Zakowski, MF, Zhang, Q, Beer, DG, Wistuba, II, Watson, MA, Garraway, LA, Ladanyi, M, Travis, WD, Pao, W, Rubin, MA, Gabriel, SB, Gibbs, RA, Varmus, HE, Wilson, RK, Lander, ES, Meyerson, M|
Somatic alterations in cellular DNA underlie almost all human cancers. The prospect of targeted therapies and the development of high-resolution, genome-wide approaches are now spurring systematic efforts to characterize cancer genomes. Here we report a large-scale project to characterize copy-number alterations in primary lung adenocarcinomas. By analysis of a large collection of tumours (n = 371) using dense single nucleotide polymorphism arrays, we identify a total of 57 significantly recurrent events. We find that 26 of 39 autosomal chromosome arms show consistent large-scale copy-number gain or loss, of which only a handful have been linked to a specific gene. We also identify 31 recurrent focal events, including 24 amplifications and 7 homozygous deletions. Only six of these focal events are currently associated with known mutations in lung carcinomas. The most common event, amplification of chromosome 14q13.3, is found in approximately 12% of samples. On the basis of genomic and functional analyses, we identify NKX2-1 (NK2 homeobox 1, also called TITF1), which lies in the minimal 14q13.3 amplification interval and encodes a lineage-specific transcription factor, as a novel candidate proto-oncogene involved in a significant fraction of lung adenocarcinomas. More generally, our results indicate that many of the genes that are involved in lung adenocarcinoma remain to be discovered.