NCT04005716

Brief Summary

This Phase 3 study was a randomized, double-blind, placebo-controlled, multicenter trial designed to evaluate the efficacy of tislelizumab in combination with either cisplatin or carboplatin and etoposide (Arm A), compared to placebo combined with either cisplatin or carboplatin and etoposide (Arm B), as a first-line treatment for participants with previously untreated extensive-stage small cell lung cancer (ES-SCLC).

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
457

participants targeted

Target at P50-P75 for phase_3

Timeline
Completed

Started Jul 2019

Typical duration for phase_3

Geographic Reach
1 country

50 active sites

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

July 1, 2019

Completed
1 day until next milestone

First Posted

Study publicly available on registry

July 2, 2019

Completed
20 days until next milestone

Study Start

First participant enrolled

July 22, 2019

Completed
3.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 19, 2023

Completed
8 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 29, 2023

Completed
1.2 years until next milestone

Results Posted

Study results publicly available

February 28, 2025

Completed
Last Updated

February 28, 2025

Status Verified

February 1, 2025

Enrollment Period

3.7 years

First QC Date

July 1, 2019

Results QC Date

November 14, 2024

Last Update Submit

February 24, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • Overall Survival (OS)

    Defined as the time from the date of randomization to the date of death due to any cause. Median OS was estimated using Kaplan-Meier methodology.

    From randomization to the primary completion cut-off on April 19, 2023, the median follow-up was 15.44 months (range: 0.2-44.9) for Arm A and 13.22 months (range: 0.1-40.8) for Arm B.

Secondary Outcomes (9)

  • Progression Free Survival (PFS)

    From randomization to the primary completion cut-off on April 19, 2023, the median follow-up was 15.44 months (range: 0.2-44.9) for Arm A and 13.22 months (range: 0.1-40.8) for Arm B.

  • Overall Response Rate (ORR)

    From randomization to the primary completion cut-off on April 19, 2023, the median follow-up was 15.44 months (range: 0.2-44.9) for Arm A and 13.22 months (range: 0.1-40.8) for Arm B.

  • Disease Control Rate (DCR)

    From randomization to the primary completion cut-off on April 19, 2023, the median follow-up was 15.44 months (range: 0.2-44.9) for Arm A and 13.22 months (range: 0.1-40.8) for Arm B.

  • Clinical Benefit Rate (CBR)

    From randomization to the primary completion cut-off on April 19, 2023, the median follow-up was 15.44 months (range: 0.2-44.9) for Arm A and 13.22 months (range: 0.1-40.8) for Arm B.

  • Duration of Response (DOR)

    From randomization to the primary completion cut-off on April 19, 2023, the median follow-up was 15.44 months (range: 0.2-44.9) for Arm A and 13.22 months (range: 0.1-40.8) for Arm B.

  • +4 more secondary outcomes

Study Arms (2)

Arm A: Tislelizumab + Chemotherapy

EXPERIMENTAL

Participants received tislelizumab in combination with either cisplatin or carboplatin (at the investigator's discretion) and etoposide during the induction phase, administered every 3 weeks for 4 cycles. Upon completion of the induction phase, participants transitioned to maintenance therapy with tislelizumab only, administered once every 3 weeks.

Drug: TislelizumabDrug: CisplatinDrug: CarboplatinDrug: Etoposide

Arm B: Placebo + Chemotherapy

PLACEBO COMPARATOR

Participants received a placebo in combination with either cisplatin or carboplatin (at the investigator's discretion) and etoposide during the induction phase, given every 3 weeks for 4 cycles. Upon completion of the induction phase, participants transitioned to maintenance therapy with placebo only, administered once every 3 weeks.

Drug: CisplatinDrug: CarboplatinDrug: EtoposideDrug: Placebo

Interventions

200 mg administered intravenously on Day 1 of each 21-day cycle

Arm A: Tislelizumab + Chemotherapy

75 mg/m² was administered intravenously on Day 1 of each 21-day cycle, infused over a duration of two hours. Treatment with cisplatin was discontinued starting in Cycle 5 and beyond.

Arm A: Tislelizumab + ChemotherapyArm B: Placebo + Chemotherapy

An area under the curve (AUC) of 5 mg/mL/min was administered intravenously on Day 1 of each 21-day cycle, infused over a duration of 15 to 60 minutes. Treatment with carboplatin was discontinued starting in Cycle 5 and beyond.

Arm A: Tislelizumab + ChemotherapyArm B: Placebo + Chemotherapy

100 mg/m² was administered intravenously from Day 1 to Day 3 of each 21-day cycle, infused over a duration of 60 minutes. Treatment with etoposide was discontinued starting in Cycle 5 and beyond.

Arm A: Tislelizumab + ChemotherapyArm B: Placebo + Chemotherapy

200 mg was administered intravenously on Day 1 of each 21-day cycle to match tislelizumab.

Arm B: Placebo + Chemotherapy

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age≥18 years old, male or female, signed Informed Consent Form (ICF).
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
  • Histologically or cytologically confirmed ES-SCLC
  • No prior systemic treatment for ES-SCLC
  • Adequate hematologic and end organ function

You may not qualify if:

  • Active leptomeningeal disease or uncontrolled, untreated brain metastasis;
  • Prior therapy with an antibody or drug against immune checkpoint pathways, including but not limited to, anti program death receptor-1 (anti-PD-1), anti-PD-L1, or anti cytotoxic T lymphocyte associated antigen 4 (anti CTLA-4) antibody;
  • Was administered a live vaccine ≤ 4 weeks before randomization;
  • Active autoimmune diseases or history of autoimmune diseases that may relapse
  • Any condition that required systemic treatment with either corticosteroids or other immunosuppressive medication ≤ 14 days before randomization;
  • With a history of interstitial lung disease, non-infectious pneumonitis, or uncontrolled systemic diseases;
  • Severe chronic or active infections requiring systemic antibacterial, antifungal or antiviral therapy within 2 weeks prior to randomization, including but not limited to tuberculosis infection;
  • Participant with untreated hepatitis B virus (HBV)/hepatitis C virus (HCV), or a known history of HIV infection;
  • Participants with toxicities (as a result of prior anticancer therapy) which have not recovered to baseline or stabilized at the time of randomization;
  • Clinically significant pericardial effusion, or Clinically uncontrolled pleural effusion

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (50)

The Second Hospital of Anhui Medical University

Hefei, Anhui, 230601, China

Location

Peking University Third Hospital

Beijing, Beijing Municipality, 100000, China

Location

China Japan Friendship Hospital

Beijing, Beijing Municipality, 100029, China

Location

Beijing Cancer Hospital

Beijing, Beijing Municipality, 100142, China

Location

Beijing Hospital

Beijing, Beijing Municipality, 100730, China

Location

Peking Union Medical College Hospital

Beijing, Beijing Municipality, 100730, China

Location

Chinese Pla General Hospital

Beijing, Beijing Municipality, 100853, China

Location

Peking University International Hospital

Beijing, Beijing Municipality, 102206, China

Location

Daping Hospital, Third Military Medical University

Chongqing, Chongqing Municipality, 400042, China

Location

Fujian Medical University Union Hospital

Fuzhou, Fujian, 350001, China

Location

Fujian Cancer Hospital

Fuzhou, Fujian, 350014, China

Location

The First Affiliated Hospital of Xiamen University

Xiamen, Fujian, 361003, China

Location

The First Hospital of Lanzhou University

Lanzhou, Gansu, 730000, China

Location

Cancer Center of Guangzhou Medical University

Guangzhou, Guangdong, 510030, China

Location

Guangdong Provincial Peoples Hospital

Guangzhou, Guangdong, 510080, China

Location

The First Affiliated Hospital of Guangzhou Medical University

Guangzhou, Guangdong, 510120, China

Location

Affiliated Hospital of Guilin Medical University

Guilin, Guangxi, 541001, China

Location

The Peoples Hospital of Guangxi Zhuang Autonomous Region

Nanning, Guangxi, 530021, China

Location

The Tumor Hospital Affiliated to Guangxi Medical University

Nanning, Guangxi, 530021, China

Location

Harbin Medical University Cancer Hospital

Harbin, Heilongjiang, 150000, China

Location

Henan Cancer Hospital

Zhengzhou, Henan, 450000, China

Location

The First Affiliated Hospital of Zhengzhou University

Zhengzhou, Henan, 450052, China

Location

Wuhan Central Hospital

Wuhan, Hubei, 430014, China

Location

Union Hospital of Tongji Medical College, Huazhong University of Science and Technology

Wuhan, Hubei, 430022, China

Location

Tongji Hospital of Tongji Medical College Huazhong University of Science and Technology

Wuhan, Hubei, 430030, China

Location

Changsha Central Hospital

Changsha, Hunan, 410004, China

Location

Xiangya Hospital of Central South University

Changsha, Hunan, 410008, China

Location

Hunan Cancer Hospital

Changsha, Hunan, 410013, China

Location

General Hospital of Eastern Theater Command

Nanjing, Jiangsu, 210002, China

Location

Nanjing Chest Hospital

Nanjing, Jiangsu, 210029, China

Location

The First Affiliated Hospital of Soochow University

Suzhou, Jiangsu, 215006, China

Location

Jilin Cancer Hospital

Changchun, Jilin, 130021, China

Location

The First Hospital of China Medical University

Shenyang, Liaoning, 110001, China

Location

Liaoning Cancer Hospital and Institute

Shenyang, Liaoning, 110042, China

Location

Shaanxi Provincial Cancer Hospital

Xi'an, Shaanxi, 710061, China

Location

The First Affiliated Hospital of Xian Jiaotong University

Xi'an, Shaanxi, 710061, China

Location

Jinan Central Hospital

Jinan, Shandong, 250013, China

Location

Shandong Cancer Hospital

Jinan, Shandong, 250117, China

Location

The Affiliated Hospital of Qingdao University Branch South

Qingdao, Shandong, 266000, China

Location

Yantai Yuhuangding Hospital

Yantai, Shandong, 264000, China

Location

Shanghai Chest Hospital

Shanghai, Shanghai Municipality, 200030, China

Location

Shanghai Pulmonary Hospital

Shanghai, Shanghai Municipality, 200433, China

Location

Sichuan Cancer Hospital and Institute

Chengdu, Sichuan, 610041, China

Location

West China Hospital, Sichuan University

Chengdu, Sichuan, 610041, China

Location

Tianjin Medical University General Hospital

Tianjin, Tianjin Municipality, 300052, China

Location

Tianjin Medical University Cancer Institute and Hospital

Tianjin, Tianjin Municipality, 300060, China

Location

Affiliated Cancer Hospital of Xinjiang Medical University

Ürümqi, Xinjiang, 830000, China

Location

Yunnan Cancer Hospital

Kunming, Yunnan, 650100, China

Location

The First Affiliated Hospital, Zhejiang University School of Medicine

Hangzhou, Zhejiang, 310003, China

Location

Zhejiang Cancer Hospital

Hangzhou, Zhejiang, 310022, China

Location

Related Publications (4)

  • Cheng Y, Fan Y, Zhao Y, Huang D, Li X, Zhang P, Kang M, Yang N, Zhong D, Wang Z, Yu Y, Zhang Y, Zhao J, Qin T, Chen C, Leaw S, Zheng W, Song Y; RATIONALE-312 Study Group. Tislelizumab Plus Platinum and Etoposide Versus Placebo Plus Platinum and Etoposide as First-Line Treatment for Extensive-Stage SCLC (RATIONALE-312): A Multicenter, Double-Blind, Placebo-Controlled, Randomized, Phase 3 Clinical Trial. J Thorac Oncol. 2024 Jul;19(7):1073-1085. doi: 10.1016/j.jtho.2024.03.008. Epub 2024 Mar 7.

  • Cheng Y, Qin T, Chen C, B Barnes F, Barnes G. Tislelizumab plus platinum and etoposide versus placebo plus platinum and etoposide as first-line treatment for extensive-stage small-cell lung cancer: patient-reported outcomes in the RATIONALE-312 trial. Curr Med Res Opin. 2026 Jan 30:1-11. doi: 10.1080/03007995.2026.2620691. Online ahead of print.

  • Long R, Chen F. First-line chemotherapy with tislelizumab for patients with extensive-stage small cell lung cancer: a cost-effectiveness analysis. Sci Rep. 2024 Dec 30;14(1):31958. doi: 10.1038/s41598-024-83509-x.

  • Wu J, Zhang A, Li L, Liu S, Yang F, Yang R. Meta-analysis of the Efficacy and Tolerability of Immune Checkpoint Inhibitors Combined With Chemotherapy in First-line Treatment of Small Cell Lung Cancer. Clin Ther. 2021 Mar;43(3):582-593.e2. doi: 10.1016/j.clinthera.2020.12.017. Epub 2021 Jan 25.

MeSH Terms

Conditions

Small Cell Lung Carcinoma

Interventions

tislelizumabCisplatinCarboplatinEtoposide

Condition Hierarchy (Ancestors)

Carcinoma, BronchogenicBronchial NeoplasmsLung NeoplasmsRespiratory Tract NeoplasmsThoracic NeoplasmsNeoplasms by SiteNeoplasmsLung DiseasesRespiratory Tract Diseases

Intervention Hierarchy (Ancestors)

Chlorine CompoundsInorganic ChemicalsNitrogen CompoundsPlatinum CompoundsCoordination ComplexesOrganic ChemicalsPodophyllotoxinTetrahydronaphthalenesNaphthalenesPolycyclic Aromatic HydrocarbonsHydrocarbons, AromaticHydrocarbons, CyclicHydrocarbonsPolycyclic CompoundsGlucosidesGlycosidesCarbohydrates

Results Point of Contact

Title
Study Director
Organization
BeiGene

Study Officials

  • Study Director

    Study Director

    STUDY DIRECTOR

Publication Agreements

PI is Sponsor Employee
No
Restriction Type
OTHER
Restrictive Agreement
Yes

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 1, 2019

First Posted

July 2, 2019

Study Start

July 22, 2019

Primary Completion

April 19, 2023

Study Completion

December 29, 2023

Last Updated

February 28, 2025

Results First Posted

February 28, 2025

Record last verified: 2025-02

Data Sharing

IPD Sharing
Will share

Locations