Virtual Library

Start Your Search

Masayuki Takeda



Author of

  • +

    P3.01 - Advanced NSCLC (Not CME Accredited Session) (ID 967)

    • Event: WCLC 2018
    • Type: Poster Viewing in the Exhibit Hall
    • Track:
    • Presentations: 1
    • Moderators:
    • Coordinates: 9/26/2018, 12:00 - 13:30, Exhibit Hall
    • +

      P3.01-96 - Clinical Characteristics of Non–Small Cell Lung Cancer Harboring Mutations in Exon 20 Of EGFR or HER2 (ID 11715)

      12:00 - 13:30  |  Presenting Author(s): Masayuki Takeda

      • Abstract
      • Slides

      Background

      Unlike common epidermal growth factor receptor gene (EGFR) mutations that confer sensitivity to tyrosine kinase inhibitors (TKIs) in non–small cell lung cancer (NSCLC), mutations in exon 20 of either EGFR or the human EGFR2 gene (HER2) are associated with insensitivity to EGFR-TKIs, with treatment options for patients with such mutations being limited.

      a9ded1e5ce5d75814730bb4caaf49419 Method

      Clinical characteristics, outcome of EGFR-TKI or nivolumab treatment, and the presence of coexisting mutations were reviewed for NSCLC patients with exon-20 mutations of EGFR or HER2 as detected by routine application of an amplicon-based next-generation sequencing panel.

      4c3880bb027f159e801041b1021e88e8 Result

      Between July 2013 and June 2017, 206 patients with pathologically confirmed lung cancer were screened for genetic alterations including HER2 and EGFR mutations. Ten patients harbored HER2 exon-20 insertions (one of whom also carried an exon-19 deletion of EGFR), and 12 patients harbored EGFR exon-20 mutations. Five of the 13 patients with EGFR mutations were treated with EGFR-TKIs, two of whom manifested a partial response, two stable disease, and one progressive disease. Among the seven patients treated with nivolumab, one patient manifested a partial response, three stable disease, and three progressive disease, with most (86%) of these patients discontinuing treatment as a result of disease progression within 4 months. The H1047R mutation of PIK3CA detected in one patient was the only actionable mutation coexisting with the exon-20 mutations of EGFR or HER2.

      8eea62084ca7e541d918e823422bd82e Conclusion

      Potentially actionable mutations thus rarely coexist with exon-20 mutations of EGFR or HER2, and EGFR-TKIs and nivolumab show limited efficacy in patients with such exon-20 mutations.

      6f8b794f3246b0c1e1780bb4d4d5dc53

      Only Active Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login or select "Add to Cart" and proceed to checkout.

  • +

    P3.04 - Immunooncology (Not CME Accredited Session) (ID 970)

    • Event: WCLC 2018
    • Type: Poster Viewing in the Exhibit Hall
    • Track:
    • Presentations: 1
    • Moderators:
    • Coordinates: 9/26/2018, 12:00 - 13:30, Exhibit Hall
    • +

      P3.04-29 - Efficacy of Re-Treatment with Immune Checkpoint Inhibitors in Patients with Pretreated Advanced Non-Small Cell Lung Carcinoma (ID 13680)

      12:00 - 13:30  |  Author(s): Masayuki Takeda

      • Abstract

      Background

      The majority of NSCLC patients treated with immune-checkpoint inhibitors (ICI) develop acquired resistance. Conventional cytotoxic chemotherapy remains the treatment of choice for those patients. There are case reports on re-administration of ICIs for advanced NSCLC; however, these case series are difficult to draw definitive conclusions. We therefore retrospectively reviewed the efficacy of retreatment with ICI in our hospital.

      a9ded1e5ce5d75814730bb4caaf49419 Method

      Patients with pathologically confirmed advanced NSCLC who were treated with ICI in Kindai University hospital were retrospectively reviewed from December 2015 to July 2017. Among 212 NSCLC patients treated with ICIs, 10 patients (4.7 %) were retreated with ICI.

      4c3880bb027f159e801041b1021e88e8 Result

      Number of patients treated with Nivolumab, Pembrolizumab and Atezolizumab were four, five and one, respectively. The best response of initial treatment with ICIs among 10 patients were five partial response (PR), two stable disease (SD) and three progressive disease (PD). Whereas, three patients (30%) showed SD and the others (70%) had PD to ICI retreatment. No severe adverse events attributable to the ICIs were noted.

      8eea62084ca7e541d918e823422bd82e Conclusion

      In the limited number of retrospective study, we could not find good responders for retreatment with ICIs. Best overall response during the previous treatment period is not related to the efficacy of retreatment with ICIs. At present, former responder to ICI therapy may not be the proper candidate for ICI re-challenge treatment strategy. Further biomarker analysis and treatment strategy is warranted for the patients and physicians to retreat with ICIs.

      6f8b794f3246b0c1e1780bb4d4d5dc53