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A Study of QLS31905 Combination Chemotherapy as First-Line Treatment in Patients With Advanced Solid Tumors

A Phase IB/II Clinical Study to Assess the Efficacy and Safety of QLS31905 in Combination With Chemotherapy as First-line Treatment in Patients With Claudin 18.2 (CLDN18.2) Positive Advanced Malignant Solid Tumors

Status
UNKNOWN
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06041035
Enrollment
115
Registered
2023-09-18
Start date
2023-10-31
Completion date
2025-10-31
Last updated
2023-09-18

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

Conditions

Solid Tumor

Keywords

CLDN18.2, QLS31905

Brief summary

This study aims to evaluate the efficacy and safety of QLS31905 plus chemotherapy in patients with Claudin18.2-positive advanced solid tumors.

Interventions

Administered as an intravenous infusion.

DRUGNab paclitaxel

125 mg/m2 administered as IV infusion on D1/D8/D15 of each cycle.

DRUGGemcitabine

1000 mg/m2 administered as IV infusion on D1/D8/D15 of each cycle.

DRUGOxaliplatin

85 mg/m2, intravenous infusion, D1/D15, up to 6 cycles.

DRUGCapecitabine

1000 mg/m2, oral, bid, D1-D7,D15-D21, up to 6 cycles.

DRUGCisplatin

25 mg/m2, intravenous infusion, D1/D15, up to 6 cycles.

Sponsors

Qilu Pharmaceutical Co., Ltd.
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Subjects voluntarily participate in the study and sign the informed consent form; * Eastern Cooperative Oncology Group (ECOG) performance status score of 0-1; * Expected survival time ≥ 3 months; * Histologically or cytologically confirmed locally advanced unresectable or metastatic solid tumors; * No prior systemic anti-tumor treatment for locally advanced unresectable or metastatic disease; * Tumor tissue samples determined to have moderate-to-high Claudin18.2 expression by immunohistochemistry (IHC); * At least one measurable lesion per RECIST v1.1; * Patients with adequate cardiac, liver, renal function, etc.

Exclusion criteria

* History of malignancies other than the target cancer within 5 years prior to the first dose of the investigational product ; * Underwent major organ surgery (excluding needle biopsy) or had significant trauma within 28 days prior to enrollment, or requires elective surgery during the study; * Known central nervous system metastases; * Patients with hepatitis B; patients with hepatitis C; patients who test positive for syphilis, or patients with a known history of HIV or positive HIV screening test; * Patients with a known history of psychoactive drug abuse, alcohol abuse, or substance abuse; * Patients with added risks associated with the study or may interfere with the interpretation of study results as determined by the investigator, or deemed unsuitable by the investigator and/or sponsor.

Design outcomes

Primary

MeasureTime frameDescription
Maximum Tolerated Dose (MTD) (Part A)Approximately 12 monthsAs measured by number of participants experiencing dose related toxicity (DLT) in each escalating cohort.
Phase 2 Recommended Dose(RP2D)(Part A)Approximately 12 monthsMonitor for MTD, and minimal efficacious dose by monitoring responses at different dose levels.
Objective response rate (ORR)(Part B)Approximately 12 monthsORR is defined as the proportion of participants who have a best overall response of Complete Response (CR) or Partial Response (PR) as assessed by investigator evaluation per RECIST 1.1.

Secondary

MeasureTime frameDescription
Progression Free Survival(PFS)Approximately 12 monthsPFS is defined as the duration from the subject's first dose of the investigational product to the first imaging confirmation of progressive disease per RECIST 1.1 by investigator evaluation or death due to any cause (whichever occurs first).
Duration Of Response (DOR)Approximately 12 monthsDOR is defined as the time from the date of the first response (CR/PR) until the date of progressive disease as assessed by investigator evaluation per RECIST 1.1 or death due to any cause (whichever occurs first).
Overall Survival (OS)Approximately 12 monthsOS is defined as the duration from the first dose of the investigational product to the time point when death occurs due to any cause.
Pharmacokinetics(PK) of QLS31905: Maximum concentration (Cmax)Approximately 12 monthsCmax will be derived from the PK serum samples collected.
Safety assessed by Adverse Events (AEs)Approximately 12 monthsAn AE is any untoward medical occurrence in a subject, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom,or disease (new or exacerbated) temporally associated with the use of a medicinal product.
PK of QLS31905: Terminal elimination half-life (T1/2)Approximately 12 monthsT1/2 will be derived from the PK serum samples collected.
PK of QLS31905: Clearance (CL)Approximately 12 monthsCL will be derived from the PK serum samples collected.
PK of QLS31905: Apparent volume of distribution during the terminal phase (Vz)Approximately 12 monthsVz will be derived from the PK serum samples collected.
Number of anti-drug antibody (ADA) Positive ParticipantsApproximately 12 monthsImmunogenicity will be measured by the number of participants that are ADA positive.
PK of QLS31905: Time of the maximum concentration (Tmax)Approximately 12 monthsTmax will be derived from the PK serum samples collected.
Safety assessed by incidence of serious adverse events (SAE)Approximately 12 monthsAdverse Event (AE) is considered serious if the investigator or sponsor view any of the following outcomes: Death, life-threatening, persistent or significant disability/incapacity, congenital anomaly or birth defect,hospitalization, or medically important event.
Number of participants with laboratory value abnormalities and/or adverse events (AEs)Approximately 12 monthsNumber of participants with potentially clinically significant laboratory values.

Countries

China

Contacts

Primary ContactLin Shen, M.D
linshenpku@163.com010-881965671

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 29, 2026