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QLS5212 for Participants With Advanced Solid Tumors

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

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07467629
Enrollment
100
Registered
2026-03-12
Start date
2026-05-11
Completion date
2028-04-05
Last updated
2026-05-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Solid Tumor Cancer

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.

Interventions

DRUGQLS5212

An anti-trophoblast glycoprotein antibody-drug conjugate

Sponsors

Qilu Pharmaceutical Co., Ltd.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
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: 1. Absolute neutrophil count ≥ 1,500/μL. 2. Platelet count ≥ 100 × 1000/μL 3. Hemoglobin ≥ 9.0 g/dL. 4. Albumin ≥ 3 g/dL. 5. ALT/AST ≤ 3.0 × ULN.(for patients with hepatic metastases, ALT and AST ≤ 5 × ULN.) 6. Total bilirubin ≤ 1.5 ULN or ≤ 3 x ULN for patients with Gilbert's disease. 7. a calculated or measured creatinine clearance ≥60 mL/minute. * Identification of an archival tumor sample (i.e., tissue block \[formalin-fixed paraffin-embedded\] or a series of approximately 10-15 slides).

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.

Design outcomes

Primary

MeasureTime frame
Maximum tolerated dose (MTD)From First Patient Dosed to end of Escalation (up to 14 months).
Dose-limiting Toxicity (DLT)From enrollment to 21 days of treatment.
Recommended Phase 2 dose (RP2D)From First Patient Dosed to end of Escalation (up to 14 months).
Incidence of Treatment-Emergent Adverse EventsFrom enrollment of the first participant to 30 days after last dose of treatment or End of Treatment [EOT] visit (whichever is later).

Secondary

MeasureTime frame
Maximum Plasma Concentration of QLS5212From Day 1 of dosing through 7 days after last dose.
Area Under the Curve (AUC) of QLS5212From Day 1 of dosing to 7 days after last dose.
Circulating anti-drug antibodies (ADA) of QLS5212From Day 1 of dosing to 7 days after last dose.

Countries

China

Contacts

CONTACTJie Wang, Doctor
zlhuxi@163.com0351-4881611

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 20, 2026