Profiling of actionable gene alterations in ovarian cancer by targeted deep sequencing

  • Authors:
    • Masataka Takenaka
    • Motonobu Saito
    • Reika Iwakawa
    • Nozomu Yanaihara
    • Misato Saito
    • Mamoru Kato
    • Hitoshi Ichikawa
    • Tatsuhiro Shibata
    • Jun Yokota
    • Aikou Okamoto
    • Takashi Kohno
  • View Affiliations

  • Published online on: April 3, 2015     https://doi.org/10.3892/ijo.2015.2951
  • Pages: 2389-2398
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Abstract

To construct a profile of therapeutically actionable gene alterations in the major histological types of ovarian cancer, 72 Japanese patients with surgically resected ovarian cancers were selected from an original cohort consisting of 267 patients who had not received pre-treatment before surgery. Somatic mutations and copy number alterations at 740 hotspots in 46 cancer-related genes were detected by deep sequencing of genomic DNAs obtained from snap-frozen tumor tissues using a next generation sequencer. The alterations were verified by Sanger sequencing and quantitative genomic PCR. Mutations and/or copy number aberrations which will make tumors respond to molecular targeting drugs were detected in nine genes of 35/72 (48.6%) patients; PIK3CA (25.0%), KRAS (13.9%), ERBB2 (4.3%), PTEN (2.8%), RB1 (2.8%), CDKN2A (2.8%), AKT1 (1.4%), CTNNB1 (1.4%) and NRAS (1.4%). These mutations tended to occur in a mutually exclusive manner. Non-serous histological type tumors showed such actionable gene alterations frequently (32/47; 68.1%). Therefore, ovarian cancers, particularly of non-serous types, frequently carry gene aberrations that link to therapy using molecular targeting drugs.
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June-2015
Volume 46 Issue 6

Print ISSN: 1019-6439
Online ISSN:1791-2423

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Spandidos Publications style
Takenaka M, Saito M, Iwakawa R, Yanaihara N, Saito M, Kato M, Ichikawa H, Shibata T, Yokota J, Okamoto A, Okamoto A, et al: Profiling of actionable gene alterations in ovarian cancer by targeted deep sequencing. Int J Oncol 46: 2389-2398, 2015.
APA
Takenaka, M., Saito, M., Iwakawa, R., Yanaihara, N., Saito, M., Kato, M. ... Kohno, T. (2015). Profiling of actionable gene alterations in ovarian cancer by targeted deep sequencing. International Journal of Oncology, 46, 2389-2398. https://doi.org/10.3892/ijo.2015.2951
MLA
Takenaka, M., Saito, M., Iwakawa, R., Yanaihara, N., Saito, M., Kato, M., Ichikawa, H., Shibata, T., Yokota, J., Okamoto, A., Kohno, T."Profiling of actionable gene alterations in ovarian cancer by targeted deep sequencing". International Journal of Oncology 46.6 (2015): 2389-2398.
Chicago
Takenaka, M., Saito, M., Iwakawa, R., Yanaihara, N., Saito, M., Kato, M., Ichikawa, H., Shibata, T., Yokota, J., Okamoto, A., Kohno, T."Profiling of actionable gene alterations in ovarian cancer by targeted deep sequencing". International Journal of Oncology 46, no. 6 (2015): 2389-2398. https://doi.org/10.3892/ijo.2015.2951