Clinical trial Recruiting at 13 sites Phase 1 Interventional Ages 18 to 75

SKB571 for adults with advanced solid tumors

Official title: A Phase 1 Clinical Study of the Safety, Tolerability, Pharmacokinetics, and Preliminary Anti-tumor Activity of SKB571 for Injection in Subjects With Advanced Solid Tumors

Run by Sichuan Kelun-Biotech Biopharmaceutical Co., Ltd. · NCT06725381 · Data updated 2026-11-12

This first-in-human Phase 1 test gives SKB571 to adults with advanced or metastatic solid tumors to see if it is safe, how the body handles it, and whether it shows anti-tumor activity.

Quick facts

PhasePhase 1
Study typeInterventional
Ages18 Years to 75 Years
SexAll
Enrollment138 (estimated)
SponsorSichuan Kelun-Biotech Biopharmaceutical Co., Ltd.
Industry-sponsored
Drugs / interventionschemotherapy, immunotherapy, prednisone
Locations15 sites (Guangzhou, Guangdong and 14 other locations)
StatusRecruiting
StartedDecember 17, 2024
Main results expectedDecember 2026
Study endsDecember 2027
Registry record updatedMay 8, 2026
Trial IDNCT06725381 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 18–75 with confirmed advanced or metastatic solid tumors, measurable disease by RECIST v1.1, ECOG performance 0–1, adequate organ function, and life expectancy of at least 3 months would be appropriate candidates.

Probably not a fit

Patients with active or untreated central nervous system metastases, recent other malignancies within three years, or significant cardiac comorbidities excluded by the protocol may not benefit or may be ineligible for this treatment.

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, multicenter Phase 1 first-in-human trial administers SKB571 to adults with advanced or metastatic solid tumors to characterize safety, tolerability, pharmacokinetics, immunogenicity, and preliminary antitumor activity. Adult participants must have histologically or cytologically confirmed disease, at least one measurable lesion per RECIST v1.1, ECOG 0–1, adequate organ function, and expected survival ≥3 months. The study is being conducted at multiple cancer centers in China and will collect serial safety labs, imaging, PK sampling, and immune response data. Dose escalation and cohort expansion approaches typical of Phase 1 designs will be used to define tolerable dosing and look for early signs of efficacy.

Why it matters

Potential benefit: If successful, SKB571 could provide a new treatment option that slows tumor growth or shrinks tumors in some patients with advanced solid cancers.

How similar studies have gone: SKB571 is being tested in humans for the first time, so its effects are unproven, although other targeted and immune-modulating agents have shown benefit in some solid tumors.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Subjects aged 18-75 years at the time of signing the informed consent form
2. Subjects with histologically or cytologically confirmed locally advanced or metastatic solid tumors .
3. Subjects with at least one measurable lesion assessed by the investigator according to RECIST v1.1.
4. Subjects with Eastern Cooperative Oncology Group (ECOG) status score of 0 or 1.
5. Subjects who are assessed by the investigator to have an expected survival of ≥ 3 months.
6. Subjects who have adequate organ function.
7. Subjects who have recovered from all toxicities due to prior therapy .
8. Male and female subjects must agree to use highly effective contraception methods during the study treatment.
9. Subjects who voluntarily sign the informed consent form.

Exclusion Criteria:

1. Subjects with known active or untreated central nervous system (CNS) metastases.
2. Subjects with other malignant tumors within 3 years prior to the first dose.
3. Subjects with history of major cardiovascular, cerebrovascular, or thromboembolic disease.
4. Subjects with known active pulmonary tuberculosis.
5. Subjects with human immunodeficiency virus (HIV) infection, or any known active viral hepatitis, or hepatitis B or hepatitis C.
6. Subjects with major surgery within 28 days prior to the first dose.
7. Subjects with known allergy or hypersensitivity to SKB571 or its excipients.
8. Subjects with clinically severe lung injuries due to pulmonary complications.
9. Subjects with a history of allogeneic tissue/solid organ transplant.
10. Uncontrolled pleural effusion, pericardial effusion, or ascites effusion requiring repeated drainage.
11. Subjects who have received live vaccines within 30 days prior to the first dose of study treatment, or who are scheduled to receive live vaccines during the study.
12. Subjects who have received strong cytochrome P450 (CYP3A4) inhibitors or inducers, or BCRP inhibitors within 2 weeks prior to the first dose of study treatment or within 5 half-lives of known drug, whichever is longer.
13. Subjects who have received chemotherapy, immunotherapy, or biological therapy within 4 weeks prior to the first dose of study treatment.
14. Subjects with active infection requiring systemic anti-infective therapy within 14 days prior to the first dose of study treatment.
15. Subjects with any disease requiring systemic treatment with corticosteroids (prednisone at doses \> 10 mg/d or similar drugs with equivalent doses) or other immunosuppressive therapy within 14 days prior to the first dose of study treatment.
16. Subjects have received an investigational agent or has used an investigational device within 28 days prior to initial dose administration of SKB571.
17. Subjects whose condition deteriorates rapidly before the first dose, such as a severe physical impariment or a change in ECOG score no longer meeting the inclusion criteria.
18. Subjects with a known history of psychosis or drug abuse that will preclude the subject from completing the study.
19. Any condition that, in the opinion of the investigator, will interfere with the assessment of study treatment or the safety of the subject or the interpretation of the study results.

Where it's running

  • Sun Yat-sen University Cancer Center
    Guangzhou, Guangdong, China
    Recruiting
  • Guangxi Medical University Cancer Hospital
    Nanning, Guangxi, China
    Recruiting
  • Hubei Cancer Hospital
    Wuhan, Hubei, China
    Recruiting
  • Hunan Cancer Hospital
    Changsha, Hunan, China
    Recruiting
  • The Affliated Hospital of Nanjing University Medical School
    Nanjing, Jiangsu, China
    Recruiting
  • Shandong Cancer Hospital
    Jinan, Shandong, China
    Recruiting
Show 9 more locations
  • Guangxi Medical University Cancer Hospital
    Linyi, Shandong, China
    Recruiting
  • Si Chuan Cancer Hospital
    Chengdu, Sichuan, China
    Recruiting
  • West China Hospital, Sichuan University
    Chengdu, Sichuan, China
    Recruiting
  • Zhejiang Cancer Hospital
    Hangzhou, Zhejiang, China
    Recruiting
  • Chongqing University Cancer Hospital
    Chongqing, China
    Recruiting
  • Shanghai East Hospital
    Shanghai, China
    Recruiting
  • Zhongshan Hospital
    Shanghai, China
    Recruiting
  • Bei Jing Cancer Hospital
    Beijing, China
    Not yet recruiting
  • Shanghai Pulmonary Hospital
    Shanghai, China
    Not yet recruiting

Study contacts

Similar studies

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

  • Theranostic PET for target validation and tumor detection in solid cancers

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  • Cold exposure with PD-1/PD-L1 immunotherapy in solid tumors

    This phase 1 study tests whether adding controlled cold exposure to standard PD-1/PD-L1 therapy is safe and feasible in adults with solid tumors.

    Recruiting Phase 1 West China Hospital · Chengdu, Sichuan · NCT07538479

  • 177Lu-IM-3050, a targeted radiopharmaceutical for advanced solid tumors.

    This trial will test whether the targeted radioactive drug 177Lu-IM-3050 is safe and can shrink FAP-positive advanced solid tumors in adults who have not responded to standard treatments.

    Recruiting at 5 sites Phase 1 Immunome, Inc. · Dothan, Alabama and 4 other locations · NCT07505771

  • CMAB017 for safety and tolerability in advanced solid tumors

    This trial tests whether the experimental antibody CMAB017 is safe and tolerated in adults with advanced solid tumors who have exhausted or declined standard treatments.

    Recruiting Phase 1 Taizhou Mabtech Pharmaceutical Co.,Ltd · Shanghai · NCT06933069

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  • Exploring a new imaging tracer for cancer detection

    This study is testing a new imaging tracer to see if it can help doctors find cancer in patients with tumors using special scans.

    Recruiting Affiliated Hospital of Jiangnan University · Wuxi, Jiangsu · NCT06684028

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.