A Phase Ib/Ⅱ Trial of LBL-024 in Combination With Paclitaxel in Patients With Platinum-resistant Ovarian Cancer

Not Applicable

Not yet recruiting

• Conditions: Ovarian Cancer
• Interventions: Drug: LBL-024 Injection; Drug: Paclitaxel injection

• Registration Number: NCT07042802
• Lead Sponsor: Nanjing Leads Biolabs Co.,Ltd

Brief Summary

This trial is an open-label, multicenter phase Ib/II clinical study of LBL-024 combination therapy in patients with platinum-resistant ovarian cancer (OC),To evaluate the efficacy and safety of LBL-024 combination therapy in the treatment of advanced recurrent platinum-resistant ovarian cancer (OC) patients.

Detailed Description

The trial was divided into two phases.

Stage I (Phase Ib): Single-Arm Safety Lead-In Period. In this stage, a small number of subjects were enrolled first and received LBL-024 combined with paclitaxel treatment, with 21 days as a cycle.Safety, tolerability and preliminary efficacy of combination drugs were assessed by the sponsor and investigators.LBL-024 Dose De-escalation Principle Based on Safety and Tolerability.

Stage II (Phase II) Randomized, Expansion Cohort Study. If safety and tolerability are good, the combined administration extension study will be continued. Subjects were continued to be enrolled in the study. The study was designed as a randomized, open-label, positive-controlled trial.Subjects who met the criteria were randomly assigned to the experimental group and the control group in a ratio of 2: 1.Experimental group (LBL-024 combined with paclitaxel) and Control group (paclitaxel monotherapy).

This study will enroll up to 110 subjects.

Study Timeline

• Status Verified: 2025-06
• Study First Submitted: 2025-06-17
• Study First Submitted QC: 2025-06-20
• Last Update Submitted: 2025-06-20
• Study First Posted: 2025-06-29
• Last Update Posted: 2025-06-29
• Study Start: 2025-09-20
• Primary Completion: 2027-12-20
• Study Completion: 2028-03-20

Recruitment & Eligibility

• Status: NOT_YET_RECRUITING
• Sex: All
• Target Recruitment: 110

Inclusion Criteria

1. Agree to follow the trial treatment regimen, visit schedule, laboratory test, and other requirements of the protocol, and voluntarily enroll in the study and sign the written informed consent.
2. At the time of signing the informed consent form, the age was ≥ 18 years old, and the gender was not limited.
3. The Eastern Cooperative Oncology Group's physical status scoring standard (ECOG) is 0~1.
4. The expected survival time is at least 12 weeks.
5. According to the evaluation of RECIST 1.1 standard, the subjects enrolled have at least one measurable Target lesion.
6. Females of childbearing age are willing to take highly effective contraceptive measures From the signing of the informed consent form to within 6 months after the last administration of the trial drug (including abstinence, intrauterine device, various hormonal contraception, correct use of contraception Sets，etc）;Women of childbearing age include pre-menopausal women and women within 2 years after menopause. Women of childbearing age must have a negative pregnancy test within 7 days before the first trial drug is administered.

Exclusion Criteria

1. The subject is currently participating in any other clinical trial,Or has received or is receiving other investigational agents within 4 weeks prior to the first dose of study drug.
2. Use of immunomodulatory drugs within 2 weeks prior to the first use of study drug, including but not limited to thymopeptide, interleukins, interferon, etc.
3. Patients with active infection and currently requiring systemic treatment. active pulmonary tuberculosis (TB), receiving anti-tuberculosis treatment or Received anti-tuberculosis treatment within 6 months before screening.
4. Patients with clinically uncontrollable pleural effusion, pericardial effusion or ascites, and those requiring repeated drainage or medical intervention.
5. The patient has a Medical history of immunodeficiency, including HIV antibody positive.
6. Active hepatitis B or active hepatitis C.
7. Women during pregnancy or lactation.
8. The investigator believes that the subject has other conditions that may affect compliance or are not suitable for participating in this study.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
LBL-024+paclitaxel	LBL-024 Injection	Experimental group：LBL-024+Paclitaxel. LBL-024 dose A, Intravenous infusion on Day 1 of each cycle, Q3W. Paclitaxel dose B,Intravenous infusion on Day 1, Day 8 and Day 15 of each cycle, 3 weeks for a treatment cycle.
LBL-024+paclitaxel	Paclitaxel injection	Experimental group：LBL-024+Paclitaxel. LBL-024 dose A, Intravenous infusion on Day 1 of each cycle, Q3W. Paclitaxel dose B,Intravenous infusion on Day 1, Day 8 and Day 15 of each cycle, 3 weeks for a treatment cycle.
Paclitaxel	Paclitaxel injection	control group：Paclitaxel. Paclitaxel dose B,Intravenous infusion on Day 1, Day 8 and Day 15 of each cycle,3 weeks for a treatment cycle.

Primary Outcome Measures

Name	Time	Method
Objective Response Rate (ORR)	From all subjects signed the informed consent form up to the completion of the follow-up period of drug withdrawal (28 days after drug withdrawal or before the start of new anti-tumor therapy)	According to the evaluation criteria of RECIST V1.1 (solid tumour) ,Proportion of subjects achieving complete response (CR) or partial response (PR).It was used to evaluate the efficacy in Phase Ib.
Occurrence of adverse event (AE) and serious adverse event (SAE)	From all subjects signed the informed consent form up to the completion of the follow-up period of drug withdrawal (28 days after drug withdrawal or before the start of new anti-tumor therapy)	Adverse event (AE) will be graded according to the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) 5.0.The safety profile of LBL-024 in combination with paclitaxel will be assessed by monitoring the adverse event (AE) and serious adverse event (SAE) in Phase Ib study.
Progression-free Survival(PFS)	From all subjects signed the informed consent form up to the completion of the follow-up period of drug withdrawal (28 days after drug withdrawal or before the start of new anti-tumor therapy)	According to the evaluation criteria of RECIST V1.1 (solid tumour),Time from randomisation to disease progression or death from any cause.It was used to evaluate Time of disease no-progression or Drug resistance in Phase II.

Secondary Outcome Measures

Name	Time	Method
Cmax	From all subjects signed the informed consent form up to the completion of the follow-up period of drug withdrawal (28 days after drug withdrawal or before the start of new anti-tumor therapy)	Maximum drug concentration in plasma after administration.
Tmax	From all subjects signed the informed consent form up to the completion of the follow-up period of drug withdrawal (28 days after drug withdrawal or before the start of new anti-tumor therapy)	After administration,Time to reach maximum drug concentration in plasma.
Immunogenicity	From all subjects signed the informed consent form up to the completion of the follow-up period of drug withdrawal (28 days after drug withdrawal or before the start of new anti-tumor therapy)	The immunogenicity is evaluated by the incidence of anti-drug antibodies (ADA) and neutralizing antibodies (if applicable) in subjects.Immunogenicity refers to the performance that can elicit an immune response.
Disease Control Rate(DCR)	From all subjects signed the informed consent form up to the completion of the follow-up period of drug withdrawal (28 days after drug withdrawal or before the start of new anti-tumor therapy)	Percentage of participants achieving CR, PR, iCR, iPR and stable disease (SD) after treatment.
Duration of Response(DOR)	From all subjects signed the informed consent form up to the completion of the follow-up period of drug withdrawal (28 days after drug withdrawal or before the start of new anti-tumor therapy)	DOR is defined as the duration from earliest date of disease response (CR、PR 、iCR or iPR) until earliest date of disease progression or death from any cause(if occurring sooner than progression).