Clinical trial Recruiting at 3 sites Phase1; Phase2 Interventional Ages 18 and up

WSD0922-FU plus osimertinib for EGFR-mutant advanced NSCLC with C797S or new brain metastases

Official title: A Phase I/II Study to Evaluate Safety, Tolerability, Pharmacokinetics and Anti-tumor Activity of WSD0922-FU in Combination With Osimertinib for Patients With Locally Advanced or Metastatic Non- Small Cell Lung Cancer

Run by Wayshine Biopharm, Inc. · NCT07206498 · Data updated 2026-11-12

This trial will test whether adding WSD0922-FU to osimertinib helps adults with advanced EGFR-mutant NSCLC who have the C797S resistance mutation or newly diagnosed brain metastases.

More Non-small Cell Lung Cancer (NSCLC) trials

Quick facts

PhasePhase1; Phase2
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment48 (estimated)
SponsorWayshine Biopharm, Inc.
Industry-sponsored
Drugs / interventionschemotherapy, immunotherapy, Osimertinib
Locations3 sites (Fuzhou, Fujian and 2 other locations)
StatusRecruiting
StartedOctober 17, 2025
Main results expectedOctober 14, 2028
Study endsOctober 14, 2029
Registry record updatedNovember 10, 2026
Trial IDNCT07206498 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (≥18) with locally advanced or metastatic EGFR-mutant NSCLC who have progressed on third-generation EGFR-TKI with a C797S mutation or who are newly diagnosed with CNS metastases and have Del19 or L858R mutations, ECOG 0–1, measurable disease, and adequate organ function are ideal candidates.

Probably not a fit

Patients with poor performance status, inadequate organ function, or who have recently received other anti-cancer therapies may not be eligible or likely to benefit from this combination.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This open-label Phase 1/2 trial combines WSD0922-FU, a reversible inhibitor active against EGFR with C797S, with the third-generation EGFR inhibitor osimertinib to characterize safety, tolerability, pharmacokinetics, and preliminary anti-tumor activity. Phase 1 will determine dose and safety while Phase 2 will further explore efficacy, including in patients with newly diagnosed CNS metastases carrying classical EGFR Del19 or L858R mutations. Eligible participants must have measurable disease per RECIST 1.1, ECOG performance status 0–1, and adequate organ function, with mandatory blood/tissue sampling. Outcomes will include adverse events, PK measures, and objective response in target lesions.

Why it matters

Potential benefit: If successful, the combination could help overcome C797S-mediated resistance and better control brain metastases in a subset of EGFR-mutant NSCLC patients.

How similar studies have gone: Related strategies targeting C797S-mediated resistance and combining novel EGFR-targeting agents with osimertinib have shown preclinical promise and some early-phase signals, but the WSD0922-FU plus osimertinib combination is novel and not yet proven in patients.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* ≥Age 18, gender is not limited;
* Locally advanced or metastatic NSCLC confirmed by pathology;
* Patients who have been genetically tested to carry EGFR sensitive mutations;
* Blood/Tissue samples must be provided for testing;
* Must have a minimum life expectancy of \>= 3 months;
* At least one measurable tumor lesion according to RECIST version 1.1; ● Previous radiotherapy-treated lesions cannot be used as target lesions unless imaging studies show clear progression of the lesions.
* Physical Status (ECOG PS) score was 0-1;
* Have full organ function;
* Eligible patients (male and female) who are fertile must agree to use a reliable contraceptive method ;
* Subjects are required to give informed consent to this study before the experiment and sign a written informed consent voluntarily.

Exclusion Criteria:

* Received chemotherapy, radiotherapy, biological therapy, targeted therapy, endocrine therapy, immunotherapy, or other anti-tumor drug treatments within 4 weeks before the first administration of the study drug.
* Have previously received more than two EGFR-TKI inhibitors for part A;
* Received major organ surgery (excluding puncture biopsy) or significant trauma within 4 weeks before the first administration, or require elective surgery during the trial period.
* Used strong CYP3A4 inhibitors or strong CYP3A4 inducers within 7 days before the first use of the study drugs.
* Adverse reactions from previous anti-tumor treatments have not recovered to NCI-CTCAE v5.0 grade ≤1 (except for toxicities judged by the researcher to have no safety risks, such as hair loss, grade 2 peripheral neurotoxicity, and stable thyroid function after hormone replacement therapy).
* Skin/pressure ulcers, chronic leg ulcers, known active gastric ulcers, or non-healing wounds.
* History of severe allergies, or allergies to any active or inactive ingredients of the study drug;
* Severe infections requiring intravenous antibiotic infusion or hospitalization at the time of screening; or uncontrollable active infections within 4 weeks before administration;
* Known active or suspected autoimmune diseases; or known active ocular diseases (such as active wet age-related macular degeneration, diabetic retinopathy with macular edema);
* Human immunodeficiency virus (HIV) (HIV1/2 antibody) positive, syphilis spirochete antibody positive .
* Patients with interstitial lung disease.
* History of severe cardiovascular diseases.
* Unable to orally swallow medication, or there is a condition that significantly affects gastrointestinal absorption as judged by the researcher; Clinical intervention is required for pleural effusion, ascites (excluding subjects who do not need drainage and have been stable for more than 2 weeks after drainage).
* Known alcohol or drug dependence.
* Mental disorders or poor compliance;
* Pregnant or lactating women;
* The investigator believes that the subject has other reasons that make them unsuitable for participating in this clinical study.

Where it's running

  • Fujian Cancer Hospital
    Fuzhou, Fujian, China
    Recruiting
  • Tianjin Medical University Cancer Institute and Hospital
    Tianjin, Tianjin Municipality, China
    Recruiting
  • Shanghai East Hospital
    Shanghai, China
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.