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OncoMatch/Clinical Trials/NCT07128199

A Study to Assess Zipalertinib Versus Placebo in Participants With Early Stage NSCLC With Uncommon EGFR Mutations, Following Complete Tumor Resection

Official title: A Randomized, Placebo-Controlled, Double-Blind, Multi-Center Phase 3 Study of Zipalertinib Versus Placebo in Early Stage NSCLC Patients With Uncommon EGFR Mutations Following Complete Tumor Resection (REZILIENT4)

Is NCT07128199 recruiting? Yes, currently enrolling (Oct 2026). This Phase 3 trial studies TAS6417 for lung cancer.

Phase 3RecruitingTaiho Oncology, Inc.NCT07128199Data as of Oct 2026Location: International · 24 countries

Treatment: TAS6417 — The purpose of this study is to compare the efficacy of zipalertinib versus placebo in participants with early stage resected non-small cell lung cancer (NSCLC) harboring uncommon epidermal growth factor receptor mutation (EGFRmt).

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Extracted eligibility criteria

Treatments studied

Other

TAS6417

Cancer type

Non-Small Cell Lung Carcinoma

Biomarker criteria

Required: EGFR exon 20 insertion

exon20 insertion mutations (ex20ins)

Required: EGFR g719x

other uncommon, non-ex20ins EGFRmt (eg, G719X, L861Q, or S768I) exons 18-21 of the EGFR tyrosine kinase domain

Required: EGFR l861q

other uncommon, non-ex20ins EGFRmt (eg, G719X, L861Q, or S768I) exons 18-21 of the EGFR tyrosine kinase domain

Required: EGFR s768i

other uncommon, non-ex20ins EGFRmt (eg, G719X, L861Q, or S768I) exons 18-21 of the EGFR tyrosine kinase domain

Disease stage

Required: Stage IB, IIA, IIB, IIIA, IIIB (N2 ONLY) (other)

Pathologic (post-operative) Stage IB, IIA, IIB, or IIIA according to the AJCC 9th tumor nodes metastasis (TNM) staging system for lung cancer. In addition, participants with stage IIIB are eligible when regional lymph node involvement is N2.

Performance status

ECOG 0–1(Restricted strenuous activity)

Prior therapy

Cannot have received: EGFR inhibitor (zipalertinib, TAS6417, CLN-081)

Zipalertinib (TAS6417/CLN-081) or any other EGFR inhibitor at any time

Cannot have received: radiation therapy

Pre-operative or post-operative or planned radiation therapy for the current lung cancer

Cannot have received: systemic anticancer therapy for NSCLC

Exception: Participants who have received postoperative adjuvant platinum-based chemotherapy up to 4 cycles are permitted

Any prior systemic anticancer therapy for NSCLC, including preoperative (neoadjuvant) chemotherapy, immunotherapy, or investigational therapy. (Exception: Participants who have received postoperative adjuvant platinum-based chemotherapy up to 4 cycles are permitted)

Structured fields extracted by AI. May contain errors — verify against the official protocol.

US trial sites

  • Alaska Oncology and Hematology · Anchorage, Alaska
  • City of Hope Comprehensive Cancer Center - Duarte · Duarte, California
  • City of Hope Comprehensive Cancer Center Orange County Lennar Foundation Cancer Center · Irvine, California
  • Scripps Clinic Torrey Pines · La Jolla, California
  • Kaiser Permanente - Vallejo Medical Center · Vallejo, California

Showing up to 5 US sites.

See all sites on ClinicalTrials.gov →

Frequently asked questions

Is NCT07128199 currently recruiting?

Yes, this trial is currently recruiting patients.

Are there prior therapy exclusions?

Yes. Prior EGFR inhibitor, radiation therapy, systemic anticancer therapy for NSCLC disqualifies patients from enrollment.

Does this trial require EGFR?

Yes, EGFR exon 20 insertion is a required biomarker for enrollment.

Does this trial require EGFR?

Yes, EGFR g719x is a required biomarker for enrollment.

Does this trial require EGFR?

Yes, EGFR l861q is a required biomarker for enrollment.

What disease stage is eligible?

Stage IB or IIA or IIB or IIIA or IIIB (N2 ONLY) is required.

Could you qualify for this trial?

Enter your biomarker results to see how this trial's eligibility criteria match your specific cancer profile.

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