Phase II Study of Sacituzumab Tirumotecan in Combination With Osimertinib for Neoadjuvant Treatment in Patients With Resectable Epidermal Growth Factor Receptor (EGFR)-Mutated Non-Small Cell Lung Cancer

August 18, 2026 updated by: Sichuan Kelun-Biotech Biopharmaceutical Co., Ltd.

A Multicenter, Phase II Clinical Study to Evaluate the Safety and Efficacy of Sacituzumab Tirumotecan in Combination With Osimertinib for Neoadjuvant Treatment in Patients With Resectable Epidermal Growth Factor Receptor (EGFR)-Mutated Non-Small Cell Lung Cancer

The aim of the study to evaluate the safety and efficacy of Sacituzumab Tirumotecan in combination with osimertinib for neoadjuvant treatment in patients with resectable Epidermal Growth Factor Receptor (EGFR)-Mutated Non-Small Cell Lung Cancer.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This is a multicenter, Phase 2 study to evaluate the safety and efficacy of Sacituzumab Tirumotecan in combination with osimertinib for neoadjuvant treatment in patients with resectable Epidermal Growth Factor Receptor (EGFR)-Mutated Non-Small Cell Lung Cancer.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
30

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Male or female, ≥ 18 and ≤ 75 years at the time of signing the informed consent form (ICF).
  2. Histologically or cytologically confirmed NSCLC.
  3. No prior systemic anti-tumor therapy.
  4. No prior local therapy for NSCLC.
  5. Confirmed by tumor histology, or cytology to have EGFR sensitizing mutations.
  6. Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 within 7 days before randomization.
  7. At least one target lesion as assessed by the investigator according to RECIST v1.1.
  8. Life expectancy ≥ 24 weeks.
  9. Adequate organ and bone marrow function.
  10. For female participants of childbearing potential and male participants with partners of childbearing potential, they must agree to use effective medical contraception from the start of signing the ICF until 6 months after the last dose.
  11. Participants must voluntarily join this study, sign the ICF, and be able to comply with the protocol-specified visits and related procedures.

Exclusion Criteria:

  1. Tumor histology or cytology confirming combined small cell lung cancer, neuroendocrine carcinoma, or carcinosarcoma or squamous cell carcinoma components of more than 10%.
  2. Participants with other malignant tumors within 3 years prior to randomization.
  3. Resting electrocardiogram (ECG) showing clinically significant abnormal results.
  4. Presence of any of the following cardiovascular and cerebrovascular diseases or cardiovascular and cerebrovascular risk factors.
  5. Uncontrolled systemic diseases in the investigator's judgment.
  6. History of interstitial lung disease (ILD), drug-induced ILD, or non-infectious pneumonitis, have current ILD or non-infectious pneumonitis.
  7. Clinically severe lung damage due to complications of lung disorder.
  8. Participants who have received systemic corticosteroids therapy with > 10 mg/day of prednisone or other immunosuppressive drugs within 2 weeks before randomization.
  9. Known active pulmonary tuberculosis.
  10. Known history of allogeneic organ transplant and allogeneic hematopoietic stem cell transplant.
  11. Active hepatitis B.
  12. Positive for human immunodeficiency virus (HIV) test or history of acquired immunodeficiency syndrome (AIDS); known active syphilis infection.
  13. Known hypersensitivity to osimertinib, sacituzumab tirumotecan, or any of their components (including but not limited to polysorbate-20); known history of severe hypersensitivity to other biologics.
  14. Have received a live vaccine within 30 days prior to randomization, or plan to receive a live vaccine during the study.
  15. Pregnant or lactating women.
  16. Any condition that, in the investigator's opinion, would interfere with the evaluation of the study drug, participant safety, or interpretation of study results, or any other condition that the investigator considers unsuitable for participation in this study.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Sacituzumab Tirumotecan+Osimertinib
Participants will receive Sacituzumab Tirumotecan for each 2-week cycle, Osimertinib once-daily for each 2-week cycle.
Drug: Osimertinib
80mg, QD
Drug: Sacituzumab Tirumotecan
Sacituzumab Tirumotecan: 4mg/kg, intravenous (IV) infusion

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Major Pathological Response (MPR) rate
Time Frame: up to 60 months
MPR rate is defined as the proportion of participants achieving ≤ 10% residual viable tumor cells in the postoperative surgical specimen.
up to 60 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
pathological Complete Response (pCR) rate
Time Frame: up to 60 months
pCR rate is defined as the proportion of participants achieving absence of any residual viable tumor cells in the postoperative surgical specimen.
up to 60 months
Residual viable tumor percentage (RVT%)
Time Frame: up to 60 months
RVT% is defined as the proportion of residual viable tumor cells in the postoperative surgical specimen.
up to 60 months
R0 resection rate
Time Frame: up to 60 months
Proportion of participants achieving R0 resection
up to 60 months
Pathological lymph node downstaging rate
Time Frame: up to 60 months
Pathological lymph node downstaging rate is defined as the proportion of participants achieving pathological lymph node downstaging
up to 60 months
Pathological primary tumor downstaging rate
Time Frame: up to 60 months
Pathological primary tumor downstaging rate is defined as the proportion of participants achieving pathological primary tumor downstaging
up to 60 months
ORR
Time Frame: up to 60 months
ORR is defined as a partial or complete response according to RECIST, version 1.1.
up to 60 months
EFS
Time Frame: up to 60 months
EFS is defined as the time from randomization to progression of disease, recurrence of disease, or death from any cause.
up to 60 months
DFS
Time Frame: up to 60 months
DFS is defined as the time from surgery to disease progression (recurrence or metastasis) or death due to any cause.
up to 60 months
OS
Time Frame: up to 60 moths
OS is defined as the time from randomization to death from any cause.
up to 60 moths
Incidence of Adverse events (AEs) and serious adverse events (SAEs) as assessed by NCI CTCAE v5.0
Time Frame: up to 60 months
Incidence (based on NCI CTCAE v5.0) of adverse events (AEs) and serious adverse events (SAEs).
up to 60 months
Severity of Adverse events (AEs) and serious adverse events (SAEs) as assessed by NCI CTCAE v5.0
Time Frame: up to 60 months
Severity (based on NCI CTCAE v5.0) of adverse events (AEs) and serious adverse events (SAEs).
up to 60 months
Maximum observed plasma concentration (Cmax) of Sacituzumab Tirumotecan-ADC, Sacituzumab Tirumotecan-TAB, and free KL610023
Time Frame: up to 60 months
To assess the pharmacokinetic (PK) profile of Sacituzumab Tirumotecan.
up to 60 months
Anti-drug Antibodies (ADA) of Sacituzumab Tirumotecan
Time Frame: up to 60 months
Immunogenicity test results of Sacituzumab Tirumotecan.
up to 60 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Sichuan Kelun-Biotech Biopharmaceutical Co., Ltd.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 30, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
August 31, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 31, 2032

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
December 11, 2025

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 26, 2025

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
January 9, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 20, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 18, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
May 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • SKB264-II-18

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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