KXV01 Injection in Patients With Advanced Solid Tumor (Including Osteosarcoma and Sarcoma)

A Phase I Clinical Study on the Safety, Tolerability, and Efficacy of KXV01 Injection in Patients With Advanced Solid Tumor (Including Osteosarcoma and Sarcoma)

This is a single center, single arm, open-label, dose escalation, phase 1 study to evaluate the safety, tolerability and preliminary efficacy of KXV01 TCR Lentinvivo for patients with advanced solid tumors.

Study Overview

• Status: Recruiting
• Conditions: Advanced Solid Tumors
• Intervention / Treatment: Drug: KXV01 TCR Lentinvivo Injection

Detailed Description

In recent years, the field has found that patient-specific anti-tumor treatment technologies have increasingly significant clinical application prospects and clinical value. Patient-specific anti-tumor in vivo TCR gene therapy is an advanced therapeutic strategy that can specifically recognize tumor neoantigens. This strategy is not restricted by patients' HLA typing nor by the type of indication.

This investigator-initiated clinical study aims to evaluate KXV01 TCR Lentinvivo, the third-generation self-inactivating lentiviral vector that carries patient-derived personalized tumor reactive TCR, in patients with advanced solid tumors. The study employs a BOIN design to assess safety, tolerability, and preliminary efficacy.

• Study Type: Interventional
• Enrollment (Estimated): 30
• Phase: Phase 1

Contacts and Locations

• Study Contact: Name: Weichi Zhou; Phone Number: +86-18994103369; Email: zhouwc@tcrximmune.cn

Study Locations

• China
  • Shanghai, China, 200233
    • Recruiting
    • Shanghai Sixth People's Hospital Affiliated to Shanghai Jiaotong University
    • Contact: HaiYan Hu, M.D.; Phone Number: 021-64369181; Email: zhouwc@tcrximmune.cn

Participation Criteria

Eligibility Criteria

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

Description

Screening Period 1

Inclusion Criteria 1:

1. Voluntarily participate in the clinical study; fully understand the study and voluntarily sign the informed consent form; be willing to comply with and able to complete all trial procedures.
2. Aged 18 to 70 years (inclusive).
3. Histologically or cytologically confirmed incurable or metastatic solid tumors that have failed standard treatment, or for which no standard treatment is currently available.
4. Expected survival time > 6 months.
5. ECOG performance status of 0 or 1.
6. Sufficient organ function.
7. Patients whose tumor lesions can be collected and from whom tumor-reactive TCR sequences can be identified may enter the study.
8. Women of childbearing age must have a negative urine/blood pregnancy test during the screening period and agree to use contraceptive measures for at least 1 year after administration; male subjects whose partners are of childbearing potential must agree to use effective barrier contraception for at least 1 year after administration.

Exclusion Criteria 1:

1. A history of other malignant tumors within 2 years prior to signing the informed consent form, except for non-melanoma skin cancer, some in situ carcinomas (e.g., cervical cancer, bladder cancer, breast cancer), or low-risk prostate cancer.
2. Uncontrolled infectious diseases within 4 weeks prior to signing the informed consent form.
3. Active hepatitis B or hepatitis C virus infection.
4. Patients with HIV infection.
5. Patients with positive Treponema pallidum.
6. A history of any of the following cardiovascular diseases within the past 6 months: New York Heart Association (NYHA) Class III or IV heart failure, coronary angioplasty or stenting, myocardial infarction, unstable angina, or other clinically significant heart diseases.
7. Tumor lesions invading the heart or major blood vessels.
8. Abnormal pulmonary function indicated by a ratio of forced expiratory volume in 1 second (FEV1) to forced vital capacity (FVC) < 70% in pulmonary function tests.
9. A history of clinically significant central nervous system (CNS) disorders, including but not limited to epilepsy, paresis, aphasia, stroke, severe traumatic brain injury, dementia, Parkinson's disease, cerebellar disease, and organic brain syndrome.
10. Females who are pregnant or breastfeeding.
11. A history of primary immunodeficiency or autoimmune disease.
12. Patients whose disease or condition renders them unable to understand, participate in, and/or comply with the study protocol.
13. Any other disease that the investigator believes would impair the subject's ability to tolerate protocol treatment or significantly increase the risk of complications.
14. Current or past history of psychoactive substance abuse or dependence.
15. Subjects whose underlying condition, in the investigator's judgment, may increase the risk of receiving the investigatory drug or confound the interpretation of toxic reactions and adverse events.
16. Other conditions deemed unsuitable for participation in the study by the investigator.

Screening Period 2

Inclusion Criteria 2:

The patient's organ function and key test items at this stage should not have significant changes compared with their test results in Screening Period 1. If the patient's test results in Screening Period 2 exceed the following criteria, they should not receive administration of KXV01 Injection until the abnormal items return to the normal range.

1. The patient's KXV01 Injection has been successfully prepared.
2. Expected survival time > 6 months.
3. ECOG performance status of 0 or 1.
4. Sufficient organ function.
5. Females of childbearing potential have a negative blood pregnancy test within 7 days prior to administration of the study drug (Non-childbearing potential: surgically sterilized or postmenopausal for at least 2 years). In addition, female subjects of childbearing potential must use medically approved contraceptive measures for 12 months after the start of study treatment and have no egg retrieval during this period.
6. Male subjects are willing to use medically approved contraceptive measures from the time of signing the informed consent form until 12 months after the start of study treatment, and will not donate sperm during this period.
7. At least one measurable lesion according to RECIST v1.1 criteria.
8. Toxicities and adverse reactions caused by prior therapy should have resolved to Grade ≤ 1 (except for toxicities considered clinically insignificant, such as chemotherapy-induced alopecia).

Exclusion Criteria 2:

1. Prior to administration of the study drug, the subject's anti-tumor therapy has not been sufficiently washed out (2 weeks or 5 half-lives, whichever is shorter).
2. Uncontrolled infectious diseases within the previous 4 weeks.
3. Active hepatitis B or hepatitis C virus infection.
4. Patients with HIV infection.
5. Patients with positive Treponema pallidum.
6. Tumor lesions invading the heart or major blood vessels.
7. A history of clinically significant central nervous system (CNS) disorders, including but not limited to epilepsy, paresis, aphasia, stroke, severe traumatic brain injury, dementia, Parkinson's disease, cerebellar disease, and organic brain syndrome.
8. Known primary central nervous system (CNS) malignancy or symptomatic CNS metastases.
9. Use of the restricted drugs or treatments between Screening Period 1 and Screening Period 2 per the protocol.
10. Females who are pregnant or breastfeeding.
11. Subjects whose underlying condition, in the investigator's judgment, may increase the risk of receiving the investigatory drug or confound the interpretation of toxic reactions and adverse events.
12. Receipt of major surgery (excluding diagnostic surgery) between Screening Period 1 and Screening Period 2, or expected to undergo major surgery during the study period. Subjects with planned or ongoing minor surgical procedures (such as venous access placement, etc.) are eligible for enrollment.

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: KXV01 TCR Lentinvivo Injection	Drug: KXV01 TCR Lentinvivo Injection; KXV01 TCR Lentinvivo Injection is one kind of third-generation non-replicative self-inactivating lentivirus vector which carries an effective patient's personalized tumor-reactive TCR.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Dose-limiting Toxicity	DLT evaluation period: The DLT evaluation period is defined as within 28 days (inclusive) after the subjects' first infusion of KXV01 injection during the dose escalation stage. All adverse events should be graded and evaluated in accordance with CTCAE v5.0. Among them, cytokine release syndrome (CRS) and immune effector cell-related neurotoxicity syndrome (ICANS) should be determined and graded in accordance with the standards of the American Society for Transplantation and Cell Therapy (ASTCT).	28 days after administraiton

Collaborators and Investigators

• Sponsor: TCRx Therapeutics Co.Ltd
• Collaborators: Shanghai Jiao Tong University Affiliated Sixth People's Hospital

Study record dates

Study Major Dates

• Study Start (Actual): December 19, 2025
• Primary Completion (Estimated): December 31, 2027
• Study Completion (Estimated): December 31, 2029

Study Registration Dates

• First Submitted: May 13, 2026
• First Submitted That Met QC Criteria: May 13, 2026
• First Posted (Actual): May 19, 2026

Study Record Updates

• Last Update Posted (Actual): May 19, 2026
• Last Update Submitted That Met QC Criteria: May 13, 2026
• Last Verified: May 1, 2026

More Information

Terms related to this study

• Other Study ID Numbers: KXV01-R102

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