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Study of Low-Dose Radiotherapy Concurrent Chemotherapy With Serplulimab for Patients With ES-SCLC

NCT05765825 · Status: ACTIVE_NOT_RECRUITING · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 61

Last updated 2026-04-29

No results posted yet for this study

Summary

This is a Phase II, single arm, multicenter study designed to evaluate the safety and efficacy of low-dose radiotherapy (LDRT) concurrent cisplatin/carboplatin plus etoposide with serplulimab in participants who have extensive-stage small cell lung cancer (ES-SCLC) and are chemotherapy-navïe for their extensive-stage disease.

Conditions

  • Extensive-stage Small-cell Lung Cancer

Interventions

DRUG

serplulimab

Serplulimab will be administered by intravenous infusion at a dose of 4.5mg/kg on Day 1 of each 21-day cycle until unacceptable toxicity or loss of clinical benefit as determined by the investigator after an integrated assessment of radiographic and biochemical data, and clinical status.

DRUG

Cisplatin

Cisplatin will be administered as intravenous infusion at a dose of 75 mg per meter squared (75 mg/m\^2) after completion of serplulimab on Day 1 of each 21-day cycle during the induction phase (Cycles 1-4).

DRUG

Carboplatin

Carboplatin will be administered as intravenous infusion at a dose of area under the concentration-time curve (AUC) of 5 mg/mL/min on Day 1 of each 21-day cycle during the induction phase (Cycles 1-4).

DRUG

Etoposide

Etoposide will be administered intravenously at a dose of 100 mg/m\^2 on Days 1, 2 and 3 of each 21-day cycle during the induction phase (Cycles 1-4).

RADIATION

Thoracic radiation therapy (TRT)

Participants will receive concurrent low-dose radiotherapy treatment, in once daily fractions, 3 Gy per fraction, to a target dose of 15 Gy in 5 fractions from Day 1-Day 5 in the first cycle, third cycle（ For patients with primary lung lesions (intrathoracic lesions) evaluated as small PR (tumor shrinkage \< 80%)/SD/PD），forth cycle（for subjects evaluated as PD/SD/PR with extrathoracic residual metastases).

Sponsors & Collaborators

  • Sichuan University

    lead OTHER

Principal Investigators

  • You Lu, MD · West China Hospital

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2023-03-07
Primary Completion
2024-07-31
Completion
2026-12-31

Countries

  • China

Study Locations

More Related Trials

Entities

Drugs

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05765825 on ClinicalTrials.gov