Serplulimab Plus Chemoradiotherapy for Stage III-IVA Cervical Cancer

Phase 2Active Not RecruitingNCT06419673

Cancer Institute and Hospital, Chinese Academy of Medical Sciences240 enrolled

Overview

This study is a prospective, multicenter, randomized, open controlled clinical trial aimed at evaluating the effectiveness and safety of serplulimab plus chemoradiotherapy in FIGO 2018 stage III or IVA cervical squamous cell carcinoma, adenocarcinoma, and adenosquamous cell carcinoma patients who have not received prior treatment.

Cervical cancer is the most prevalent malignant tumor of the female reproductive system in China, with an estimated 150,700 new cases and 55,700 new deaths annually. Concurrent chemoradiotherapy (CRT) remains the standard treatment for locally advanced cervical cancer (LACC). However, for high-risk LACC (HR-LACC) patients, the 2-year progression-free survival (PFS) rate is only 57%-62%, and the 5-year overall survival (OS) rate is 52%-64%, which are the leading causes of patient mortality. The KEYNOTE-A18 study demonstrated that the combination of pembrolizumab and CRT reduced the progression risk and death risk by 30% and 27%, respectively, for HR-LACC patients. Following this, the FDA approved pembrolizumab in combination with CRT for the treatment of newly diagnosed stages III-IVA cervical cancer in January 2024. This prospective, multicenter, randomized, controlled clinical trial study aims to evaluate the effectiveness and safety of serplulimab induced and combined chemoradiotherapy in FIGO 2018 stage III or IVA cervical squamous cell carcinoma, adenocarcinoma, and adenosquamous cell carcinoma patients who have not received prior treatment.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Enrollment

240

Conditions

Cervical Cancer

Interventions

SerplulimabDRUG

Serplulimab will be administered by intravenous infusion at a dose of 300mg on Day 1 of each 21-day cycle until unacceptable toxicity or loss of clinical benefit as determined by the investigator.

CisplatinDRUG

IV infusion

CarboplatinDRUG

IV infusion

Eligibility

Sex: FEMALEMin age: 18 YearsMax age: 70 Years

Medical Language ↔ Plain English

Main Inclusion Criteria: 1. Age ≥ 18 years and ≤ 75 years at time of study entry. 2. Has histologically-confirmed squamous cell carcinoma, adenocarcinoma, or adenosquamous carcinoma of the cervix. 3. The International Federation of Gynecology and Obstetrics (FIGO) 2018 Stages III-IVA. 4. Diagnosed with PD-L1-positive (combined positive score ≥1). 5. Has not previously received any definitive surgical, radiation, or systemic therapy for cervical cancer. 6. WHO/ECOG performance status of 0 or 1. 7. Patient must have at least one measurable disease as defined by RECIST 1.1. Main Exclusion Criteria: 1. Has received prior therapy with an anti-programmed cell death receptor 1 (PD-1), anti-programmed cell death receptor ligand 1 (PD-L1), or anti-programmed cell death receptor ligand 2 (PD-L2) agent o.. 2. Ongoing participation in another clinical study, or planned initiation of treatment in this study less than 28 days from the end of treatment in the previous clinical study. 3. Known history of serious allergy to any active ingredie or any excipients list in monoclonal antibody. 4. The patient has other factors that, in the judgment of the investigator, may lead to forced early termination of the study.

Locations (1)

Cancer Hospital, Chinese Academy of Medical Sciences

Beijing, Beijing Municipality, China

Outcomes

Primary Outcomes

Progression-Free Survival(PFS) at Month 36

PFS is defined as the time from randomization to the first documented progressive disease (PD) or death due to any cause, whichever occurs first. Per RECIST 1.1, or by histopathologic confirmation of suspected disease progression, PD is defined as ≥20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of ≥5 mm. The appearance of one or more new lesions is also considered PD. Unequivocal progression of non-target lesions is also considered PD. PFS data will be cumulated to a certain cut-off date and the analysis will be performed via Kaplan-Meier approach to estimate the PFS rate at Month 36 using the entire PFS data up to the cut-off date.

Time frame: Up to approximately 46 months.

Secondary Outcomes

Overall Survival (OS) at Month 36

Overall Survival (OS) at Month 36 \[ Time Frame: Up to approximately 46 months \] OS, defined as the time from initiation of study treatment to death from any cause. OS data will be cumulated to a certain cut-off date and the analysis will be performed via Kaplan-Meier approach to estimate the OS rate at Month 36 using the entire OS data up to the cut-off date. The cut-off date is event-driven and estimated to be approximately 46 months.

Time frame: Up to approximately 46 months

Objective Response Rate (ORR)

ORR is defined as the percentage of participants who have a Complete Response (CR: Disappearance of all target and non-target lesions and also includes reduction of all nodal lesions to \<10mm) or a Partial Response (PR: At least a 30% decrease in the sum of diameters of target lesions and includes no unequivocal progression in non-target lesions) per RECIST 1.1.

Time frame: Baseline up to approximately 36 months

Complete Response Rate（CRR）

The rate of CR (Disappearance of all target and non-target lesions and also includes reduction of all nodal lesions to \<10mm).

Data from ClinicalTrials.gov

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