A Study to Compare Effects and Safety of CT-P51 and Keytruda in Patients With Previously Untreated Metastatic Lung Cancer

July 6, 2026 updated by: Celltrion

A Double-Blind, Randomized, Active-Controlled, Parallel-Group, Phase 3 Study to Compare Efficacy and Safety of CT-P51 and Keytruda in Combination With Platinum-Pemetrexed Chemotherapy in Patients With Previously Untreated Metastatic Non-Squamous Non-Small Cell Lung Cancer

The goal of this Phase 3 clinical trial is to compare efficacy and safety of CT-P51 and European Union (EU) approved Keytruda in combination with platinum pemetrexed chemotherapy in patients with previously untreated metastatic nsNSCLC.

Study Overview

Status

Active, not recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

225

Phase

  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Georgia
      • Tbilisi, Georgia
        • ltd "Institute of Clinical Oncology"

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Stage IV, non squamous NSCLC
  • Have not received any prior systemic anti-cancer therapy for metastatic NSCLC
  • Have at least 1 measurable lesion per RECIST version 1.1

Exclusion Criteria:

  • Have predominantly squamous cell histology NSCLC.
  • Hypersensitivity or contraindication to any component of the study drug, pemetrexed and cisplatin or carboplatin

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: CT-P51
Drug: CT-P51
CT-P51 200mg with pemetrexed and cisplatin or carboplatin will be administered every 3 weeks for a maximum of 4 cycles followed by CT-P51 or Keytruda and pemetrexed every 3 weeks
Active Comparator: EU-approved Keytruda
Drug: EU-approved Keytruda
Keytruda 200mg with pemetrexed and cisplatin or carboplatin will be administered every 3 weeks for a maximum of 4 cycles followed by CT-P51 or Keytruda and pemetrexed every 3 weeks

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
ORR based on the confirmed best overall response (BOR) by the end of Cycle 11 according to Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1
Time Frame: Up to 34 weeks
Up to 34 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Celltrion

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

January 30, 2025

Primary Completion (Estimated)

February 1, 2027

Study Completion (Estimated)

July 1, 2028

Study Registration Dates

First Submitted

April 21, 2025

First Submitted That Met QC Criteria

April 21, 2025

First Posted (Actual)

April 23, 2025

Study Record Updates

Last Update Posted (Actual)

July 8, 2026

Last Update Submitted That Met QC Criteria

July 6, 2026

Last Verified

April 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CT-P51 3.1

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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