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Clinical Trials/NCT07467629
NCT07467629
Not yet recruiting
Phase 1

A Phase I Clinical Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Preliminary Efficacy of QLS5212 Monotherapy in Participants With Advanced Solid Tumors

Qilu Pharmaceutical Co., Ltd.1 site in 1 country100 target enrollmentStarted: April 30, 2026Last updated:
InterventionsQLS5212

Overview

Phase
Phase 1
Status
Not yet recruiting
Enrollment
100
Locations
1
Primary Endpoint
Maximum tolerated dose (MTD)

Overview

Brief Summary

This is a Phase 1, open-label, multi-center, first-in-human, dose escalation and cohort expansion study evaluating multiple doses and schedules of intravenously administered QLS5212 in participants with unresectable locally, advanced or metastatic cancer.

Study Design

Study Type
Interventional
Allocation
Na
Intervention Model
Single Group
Primary Purpose
Treatment
Masking
None

Eligibility Criteria

Ages
18 Years to — (Adult, Older Adult)
Sex
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Being able to provide informed consent and documentation of informed consent prior to initiation of any study-related tests or procedures that are not part of standard-of-care for the patient's disease.
  • Patients must also be willing and able to comply with study procedures, including the acquisition of specified research specimens.
  • Age ≥ 18 years old.
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
  • For Dose Escalation, patients with histologically diagnosed unresectable, locally advanced, or metastatic solid tumors.
  • Life expectancy ≥ 3 months.
  • Measurable disease as per Response Evaluation Criteria in Solid Tumors version 1.1 criteria and documented by CT and/or MRI.
  • 7\. Acceptable laboratory parameters:
  • Absolute neutrophil count ≥ 1,500/μL.
  • Platelet count ≥ 100 × 1000/μL

Exclusion Criteria

  • History of other primary malignancies, except: Basal cell or squamous cell carcinoma of the skin, cervical carcinoma in situ, ductal carcinoma in situ of the breast, or papillary thyroid cancer that has been definitively treated with no evidence of recurrence; Other malignancies that have been adequately treated and remain disease-free for ≥3 years prior to first study dose;
  • Untreated or active brain metastases, including leptomeningeal carcinomatosis;
  • Prior systemic anti-cancer therapy within specified windows;
  • Prior treatment with Monomethyl auristatin E (MMAE)- or Monomethylauristatin F (MMAF)-based antibody-drug conjugates (e.g., enfortumab vedotin, disitamab vedotin, tisotumab vedotin) or any TPBG-targeted therapy;
  • Clinically significant cardiovascular disease;
  • Uncontrolled systemic infection or active tuberculosis;
  • Active autoimmune disease requiring systemic immunosuppressive therapy within the past 2 years;
  • Active interstitial lung disease (ILD) or suspected ILD that cannot be ruled out by imaging at screening.

Arms & Interventions

QLS5212 Dose Escalation

Experimental

Intervention: QLS5212 (Drug)

Outcomes

Primary Outcomes

Maximum tolerated dose (MTD)

Time Frame: From First Patient Dosed to end of Escalation (up to 14 months).

Dose-limiting Toxicity (DLT)

Time Frame: From enrollment to 21 days of treatment.

Recommended Phase 2 dose (RP2D)

Time Frame: From First Patient Dosed to end of Escalation (up to 14 months).

Incidence of Treatment-Emergent Adverse Events

Time Frame: From enrollment of the first participant to 30 days after last dose of treatment or End of Treatment [EOT] visit (whichever is later).

Secondary Outcomes

  • Maximum Plasma Concentration of QLS5212(From Day 1 of dosing through 7 days after last dose.)
  • Area Under the Curve (AUC) of QLS5212(From Day 1 of dosing to 7 days after last dose.)
  • Circulating anti-drug antibodies (ADA) of QLS5212(From Day 1 of dosing to 7 days after last dose.)

Investigators

Sponsor Class
Industry
Responsible Party
Sponsor

Study Sites (1)

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