TY - JOUR A1 - Sakamoto, Yoshitaka A1 - Xu, Liu A1 - Seki, Masahide A1 - Yokoyama, Toshiyuki T. A1 - Kasahara, Masahiro A1 - Kashima, Yukie A1 - Ohashi, Akihiro A1 - Shimada, Yoko A1 - Motoi, Noriko A1 - Tsuchihara, Katsuya A1 - Kobayashi, Susumu S. A1 - Kohno, Takashi A1 - Shiraishi, Yuichi A1 - Suzuki, Ayako A1 - Suzuki, Yutaka T1 - Long-read sequencing for non-small-cell lung cancer genomes Y1 - 2020/09/01 JF - Genome Research JO - Genome Research SP - 1243 EP - 1257 DO - 10.1101/gr.261941.120 VL - 30 IS - 9 UR - http://genome.cshlp.org/content/30/9/1243.abstract N2 - Here, we report the application of a long-read sequencer, PromethION, for analyzing human cancer genomes. We first conducted whole-genome sequencing on lung cancer cell lines. We found that it is possible to genotype known cancerous mutations, such as point mutations. We also found that long-read sequencing is particularly useful for precisely identifying and characterizing structural aberrations, such as large deletions, gene fusions, and other chromosomal rearrangements. In addition, we identified several medium-sized structural aberrations consisting of complex combinations of local duplications, inversions, and microdeletions. These complex mutations occurred even in key cancer-related genes, such as STK11, NF1, SMARCA4, and PTEN. The biological relevance of those mutations was further revealed by epigenome, transcriptome, and protein analyses of the affected signaling pathways. Such structural aberrations were also found in clinical lung adenocarcinoma specimens. Those structural aberrations were unlikely to be reliably detected by conventional short-read sequencing. Therefore, long-read sequencing may contribute to understanding the molecular etiology of patients for whom causative cancerous mutations remain unknown and therapeutic strategies are elusive. ER -