Open Access

A novel point-of-care system for high-speed real-time polymerase chain reaction testing for epidermal growth factor receptor mutations in bronchial lavage fluids after transbronchial biopsy in patients with non-small cell lung cancer

  • Authors:
    • Tomohiro Sakamoto
    • Masahiro Kodani
    • Miyako Takata
    • Hiroki Chikumi
    • Masaki Nakamoto
    • Shizuka Nishii-Ito
    • Yasuto Ueda
    • Hiroki Izumi
    • Haruhiko Makino
    • Hirokazu Touge
    • Kenichi Takeda
    • Akira Yamasaki
    • Masaaki Yanai
    • Natsumi Tanaka
    • Tadashi Igishi
    • Eiji Shimizu
  • View Affiliations

  • Published online on: February 4, 2015     https://doi.org/10.3892/ijo.2015.2875
  • Pages: 1473-1480
  • Copyright: © Sakamoto et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY_NC 3.0].

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Abstract

Epidermal growth factor receptor (EGFR) gene mutation testing is essential for choosing appropriate treatment options in patients with advanced non-small cell lung cancer (NSCLC). However, a time delay occurs between histological diagnosis and molecular diagnosis in clinical situations. To minimize this delay, we developed a novel point-of-care test for EGFR mutations, based on a high-speed real-time polymerase chain reaction (PCR) system designated here as ultrarapid PCR combined with highly accurate bronchoscopic sampling. We investigated whether our system for detecting EGFR mutations was valid by comparing test results with those obtained using a commercialized EGFR mutation test. We obtained small amounts of bronchial lavage fluids after transbronchial biopsies (TBBs) were performed on enrolled patients (n=168) who underwent endobronchial ultrasonography using a guide sheath (EBUS-GS). EGFR mutation analysis was performed by ultrarapid PCR immediately after EBUS-GS-TBBs were obtained (on the same day). After pathological diagnoses of NSCLC, EGFR mutation status in formalin-fixed, paraffin- embedded samples was confirmed by the PCR-invader method, and the concordance rates between the PCR methods were compared. The total diagnostic yield of EBUS-GS-TBB was 91.0%. The positive concordance rates for detecting 19del and L858R with the ultrarapid PCR and PCR-invader methods were both 100%. Negative concordance rates were 97.2 and 98.1%, respectively. We also demonstrated a dramatic effect of early erlotinib administration, based on ultrarapid PCR results, for a 52-year-old woman suffering from respiratory failure due to severe intrapulmonary metastases with poor performance status. In conclusion, ultrarapid PCR combined with EBUS-GS-TBB enabled rapid and reliable point-of-care testing for EGFR mutations.
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April-2015
Volume 46 Issue 4

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

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Spandidos Publications style
Sakamoto T, Kodani M, Takata M, Chikumi H, Nakamoto M, Nishii-Ito S, Ueda Y, Izumi H, Makino H, Touge H, Touge H, et al: A novel point-of-care system for high-speed real-time polymerase chain reaction testing for epidermal growth factor receptor mutations in bronchial lavage fluids after transbronchial biopsy in patients with non-small cell lung cancer. Int J Oncol 46: 1473-1480, 2015.
APA
Sakamoto, T., Kodani, M., Takata, M., Chikumi, H., Nakamoto, M., Nishii-Ito, S. ... Shimizu, E. (2015). A novel point-of-care system for high-speed real-time polymerase chain reaction testing for epidermal growth factor receptor mutations in bronchial lavage fluids after transbronchial biopsy in patients with non-small cell lung cancer. International Journal of Oncology, 46, 1473-1480. https://doi.org/10.3892/ijo.2015.2875
MLA
Sakamoto, T., Kodani, M., Takata, M., Chikumi, H., Nakamoto, M., Nishii-Ito, S., Ueda, Y., Izumi, H., Makino, H., Touge, H., Takeda, K., Yamasaki, A., Yanai, M., Tanaka, N., Igishi, T., Shimizu, E."A novel point-of-care system for high-speed real-time polymerase chain reaction testing for epidermal growth factor receptor mutations in bronchial lavage fluids after transbronchial biopsy in patients with non-small cell lung cancer". International Journal of Oncology 46.4 (2015): 1473-1480.
Chicago
Sakamoto, T., Kodani, M., Takata, M., Chikumi, H., Nakamoto, M., Nishii-Ito, S., Ueda, Y., Izumi, H., Makino, H., Touge, H., Takeda, K., Yamasaki, A., Yanai, M., Tanaka, N., Igishi, T., Shimizu, E."A novel point-of-care system for high-speed real-time polymerase chain reaction testing for epidermal growth factor receptor mutations in bronchial lavage fluids after transbronchial biopsy in patients with non-small cell lung cancer". International Journal of Oncology 46, no. 4 (2015): 1473-1480. https://doi.org/10.3892/ijo.2015.2875