Study of Sacituzumab Tirumotecan Combined With Toripalimab for Resectable Stage II-IIIB NSCLC (TianjinCIH)

A Single-center, Phase II Clinical Study of Sacituzumab Tirumotecan Combined With Toripalimab as Neoadjuvant Therapy for Resectable Stage II-IIIB NSCLC

This is a prospective, open, single-center, single-arm phase II clinical study in non-small cell lung cancer (NSCLC) without common EGFR-sensitive mutations (Ex19del and L858R) or ALK fusion variants identified in the central laboratory. To evaluate the efficacy and safety of neoadjuvant therapy of sacituzumab tirumotecan combined with toripalimab.

Study Overview

• Status: Not yet recruiting
• Conditions: NSCLC (Non-small Cell Lung Cancer)
• Intervention / Treatment: Drug: Sacituzumab Govitecan (SG)+Toripalimab

• Study Type: Interventional
• Enrollment (Estimated): 38
• Phase: Phase 2

Contacts and Locations

• Study Contact: Name: Dongsheng Yue; Phone Number: +8602223109106; Email: yuedongsheng_cg@163.com
• Study Contact Backup: Name: Dongsheng Yue Tianjin Medical University Cancer Institute and Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. Age ≥18 years at the time of informed consent signing, either sex;
2. ECOG performance status score of 0-1 within 7 days prior to dosing;
3. Histologically or cytologically confirmed NSCLC;
4. Negative for EGFR sensitive mutations (no exon 19 deletion or exon 21 L858R substitution mutation) and negative for ALK fusion gene;
5. No prior local treatment (surgery or radiotherapy) for NSCLC and no prior systemic antineoplastic therapy, including cytotoxic therapy, targeted therapy (including tyrosine kinase inhibitors or monoclonal antibodies), cellular therapy, immunotherapy, traditional Chinese medicine therapy, and any other investigational drug therapy;
6. Patients with resectable stage II-IIIB NSCLC as assessed by MDT (according to UICC/AJCC 8th edition TNM staging);
7. At least one measurable lesion (according to RECIST 1.1 criteria);
8. Patients who agree to undergo radical surgical treatment;
9. Surgical evaluation confirms operability with no contraindications to surgery;

10. Adequate organ and bone marrow function (no transfusion, recombinant human thrombopoietin, or colony-stimulating factor treatment within 2 weeks prior to first dosing), defined as follows:

    1. Hematology: Absolute neutrophil count (NEUT#) ≥ 1.5×10⁹/L; Platelets (PLT) ≥ 100×10⁹/L; Hemoglobin ≥ 90 g/dL;
    2. Hepatic function: Aspartate aminotransferase (AST), Alanine aminotransferase (ALT), Alkaline phosphatase (ALP) ≤ 2.5×upper limit of normal (ULN); Total bilirubin (TBIL) ≤ 1.5×ULN;
    3. Renal function: Creatinine clearance (Ccr) ≥ 60 ml/min (Cockcroft-Gault formula, see Appendix);
    4. Coagulation function: International normalized ratio (INR), Activated partial thromboplastin time (APTT), and Prothrombin time (PT) ≤ 1.5×ULN;
    5. Cardiac function: Echocardiography (ECHO) or Multiple gated acquisition (MUGA) scan showing left ventricular ejection fraction (LVEF) ≥ 50%;
11. For female subjects of childbearing potential and male subjects with partners of childbearing potential, must agree to use effective medical contraception from the time of informed consent signing until 6 months after the last dose (see Appendix 2 for details);
12. Subjects voluntarily participate in this study, sign informed consent, and are able to comply with protocol-specified visits and related procedures.

Exclusion Criteria:

1. Histologically or cytologically confirmed combined small cell lung cancer, neuroendocrine carcinoma, or carcinosarcoma components;
2. Prior treatment with anti-PD-1, anti-PD-L1, anti-PD-L2, or anti-CTLA-4 antibodies, or any other antibodies or drugs specifically targeting T-cell co-stimulation or checkpoint pathways;
3. Prior treatment with TROP2-targeted therapy and/or topoisomerase I inhibitors;
4. Requirement for strong inhibitors or inducers of cytochrome P450 3A4 enzyme (CYP3A4) within 2 weeks prior to first dosing and during the study (strong CYP3A4 inhibitors or inducers are not permitted in this study; Appendix 6 lists representative drugs of strong CYP3A4 inhibitors or inducers); all subjects must avoid concomitant use of any drugs, herbal supplements, and/or foods known to induce CYP3A4.
5. Other malignancies within the past 5 years, excluding cured cervical carcinoma in situ, basal cell carcinoma, or cutaneous squamous cell carcinoma;
6. Known history of hypersensitivity to study drugs and their components, history of immunodeficiency, or history of organ transplantation;
7. History of interstitial lung disease (ILD) or non-infectious pneumonitis requiring steroid treatment (non-infectious), current ILD or non-infectious pneumonitis, or suspected ILD or non-infectious pneumonitis that cannot be excluded by imaging at screening; clinically significant pulmonary impairment due to pulmonary comorbidities, including but not limited to any underlying pulmonary disease (such as pulmonary embolism within 3 months prior to dosing, severe asthma, severe chronic obstructive pulmonary disease, restrictive lung disease, pleural effusion, etc.) or any autoimmune, connective tissue, or inflammatory disease that may involve the lungs (i.e., rheumatoid arthritis, Sjögren's syndrome, sarcoidosis, etc.), or prior pneumonectomy;
8. Active autoimmune disease requiring systemic treatment within the past 2 years (hormone replacement therapy is not considered systemic treatment, such as type 1 diabetes, hypothyroidism requiring only thyroid hormone replacement therapy, adrenal or pituitary insufficiency requiring only physiologic doses of glucocorticoid replacement therapy);
9. Active infection requiring systemic treatment within 2 weeks prior to first dosing;
10. Active hepatitis B [hepatitis B surface antigen (HBsAg) positive, HBV-DNA testing required; HBV-DNA ≥ 500 IU/mL or above the lower limit of detection, whichever is higher] or hepatitis C (hepatitis C antibody positive, and HCV-RNA above the lower limit of detection). Note: For HBsAg-positive subjects, anti-hepatitis B virus treatment is required during study treatment;
11. Positive human immunodeficiency virus (HIV) test or history of acquired immunodeficiency syndrome (AIDS); known active syphilis infection;
12. Severe concomitant diseases that endanger patient safety or affect study completion, as judged by the investigator, including but not limited to uncontrolled hypertension with medication, severe diabetes, active infection, etc.;
13. Documented severe dry eye syndrome, severe meibomian gland disease and/or blepharitis, or history of corneal disease that prevents delayed corneal healing;
14. Pregnant or lactating women;
15. Any condition that interferes with the evaluation of study drugs, subject safety, or interpretation of study results, or any other condition deemed by the investigator as unsuitable for participation in this study.

Study Plan

How is the study designed?

Design Details

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

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Neoadjuvant therapy group; Sacituzumab tirumotecan will be administered at a dose of 4 mg/kg via intravenous infusion, with a treatment cycle of every 2 weeks, on Day 1 of each cycle.; Toripalimab will be administered at a dose of 240 mg via intravenous infusion, with a treatment cycle of every 3 weeks, on Day 1 of each cycle.	Drug: Sacituzumab Govitecan (SG)+Toripalimab; Sacituzumab tirumotecan will be administered at a dose of 4 mg/kg via intravenous infusion, with a treatment cycle of every 2 weeks, on Day 1 of each cycle.; Toripalimab will be administered at a dose of 240 mg via intravenous infusion, with a treatment cycle of every 3 weeks, on Day 1 of each cycle.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Pathological Complete Response (pCR) Rate	pCR rate is defined as the percentage of participants having an absence of residual invasive cancer in resected lung specimens and lymph nodes following completion of neoadjuvant therapy.	Up to approximately 8 weeks following completion of neoadjuvant treatmen

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Overall Response Rate (ORR)	ORR was defined as the percentage of participants in the analysis population who had a Complete Response (CR: Disappearance of all target lesions) or a Partial Response (PR: ≥30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum diameters) per RECIST 1.1 before surgery.	Up to Study Week 15 (before surgery)
Radiological downstaging rate	The proportion of patients with radiological T, N, and overall stage reduction (AJCC v9) compared to baseline after neoadjuvant therapy.	Up to Study Week 15 (before surgery)
Major Pathological Response (mPR) Rate	mPR rate is defined as the percentage of participants having ≤10% viable tumor cells in the resected primary tumor and all resected lymph nodes following completion of neoadjuvant therapy.	Up to approximately 8 weeks following completion of neoadjuvant treatment
Event Free Survival (EFS)	EFS is defined as the time from randomization until radiographic disease progression, local progression precluding surgery, inability to resect the tumor, local or distant recurrence, or death due to any cause. EFS determined either by biopsy assessed by local pathologist or by investigator-assessed imaging using Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1).	Up to approximately 2 years
Overall Survival (OS)	OS is defined as the time from randomization until death from any cause.	Up to approximately 2 years
Number of participants experiencing treatment-emergent adverse events (TEAEs)	An AE was defined as any untoward medical occurrence in a study participant administered study drug and which does not necessarily have to have a causal relationship with this study drug. The number of participants who experienced an AE is presented.	Up to approximately 2 years
Change From Baseline in Neoadjuvant and Adjuvant Phase in European Organization for the Research and Treatment of Cancer Quality of Life Questionnaire-Core 30 (EORTC QLQ-C30)	Change from baseline in QoL score using the EORTC QLQ-C30 will be determined. The EORTC QLQ-C30 is the most widely used cancer-specific, health-related QoL instrument comprised of 30 individual items arranged as both multi-item scales and individual items. Specifically, these items are divided into 5 functional scales (15 items total), 3 symptom scales (7 items total), 6 individual items.	Baseline, during the neoadjuvant phase (Cycle 3), during the adjuvant phase (Cycles 1, 3, 5, and 7), and during safety follow-up visits (up to 2 years)

Collaborators and Investigators

• Sponsor: Tianjin Medical University Cancer Institute and Hospital

Study record dates

Study Major Dates

• Study Start (Estimated): February 24, 2026
• Primary Completion (Estimated): February 28, 2027
• Study Completion (Estimated): February 28, 2028

Study Registration Dates

• First Submitted: February 22, 2026
• First Submitted That Met QC Criteria: February 22, 2026
• First Posted (Actual): February 27, 2026

Study Record Updates

• Last Update Posted (Actual): March 27, 2026
• Last Update Submitted That Met QC Criteria: March 23, 2026
• Last Verified: February 1, 2026

More Information

Terms related to this study

• Keywords: NSCLC
• Additional Relevant MeSH Terms: Neoplasms by Site; Neoplasms; Respiratory Tract Diseases; Lung Diseases; Respiratory Tract Neoplasms; Thoracic Neoplasms; Lung Neoplasms; Carcinoma, Bronchogenic; Bronchial Neoplasms; Carcinoma, Non-Small-Cell Lung; sacituzumab govitecan
• Other Study ID Numbers: SKB264-NSIP-015

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No