Last updated: 02/28/2025 16:10:23

Study of TSR-033 with an Anti-programmed cell death-1 receptor (PD-1) in participants with Advanced Solid TumorsCITRINO

GSK study ID
213349
Clinicaltrials.gov ID
EudraCT ID
EU CT Number
Not applicable
Trial status
Completed
Completed
Overview
Eligibility
Locations
Study documents
Results summary
Plain language summaries
Additional information

Trial overview

Official title: A Phase 1 Dose Escalation and Cohort Expansion Study of TSR-033, an anti-LAG-3 Monoclonal Antibody, alone and in combination with an anti-PD-1 in Patients with Advanced Solid Tumors
Trial description: This is a multicenter, open-label, first-in-human Phase 1 study evaluating the anti-lymphocyte activation gene-3 (LAG-3) antibody TSR-033 alone, in combination with the anti-PD-1 antibody dostarlimab, and in combination with dostarlimab, modified folinic acid (FOL)/leucovorin, 5-fluorouracil and oxaliplatin (OX) (mFOLFOX6) or FOL/leucovorin, 5-fluorouracil and irinotecan (IRI) (FOLFIRI), and bevacizumab in participants with advanced solid tumors in a broad range of solid tumors. Participants with disease types selected for evaluation in this study are expected to derive clinical benefit with addition of an anti-PD-1. The study will be conducted in two parts with Part 1 consisting of dose escalation to determine the recommended phase 2 dose (RP2D) of TSR-033 as a single agent (Part 1a) and in combination with dostarlimab (Part 1c). RP2D decisions will be based on the occurrence of dose-limiting toxicities (DLTs), pharmacokinetics (PK), as well as pharmacodynamics (PDy) data. Part 2A of the study will investigate the anti-tumor activity of TSR-033 and dostarlimab in combination in participants with advanced or metastatic microsatellite stable colorectal cancer (MSS-CRC). Part 2B of the study will investigate the safety and anti-tumor activity of TSR-033 and dostarlimab in combination with chemotherapy (Cohort B1: mFOLFOX6 and Cohort B2: FOLFIRI) and bevacizumab in participants with advanced or metastatic MSS-CRC.
Primary purpose:
Treatment
Trial design:
Sequential Assignment
Masking:
None (Open Label)
Allocation:
Non-randomized
Primary outcomes:

Part 1a, Part 1c and 2B: Number of participants experiencing DLT

Timeframe: Up to 3 years and 6 months

Part 1: Number of participants with serious adverse events (SAEs), treatment-emergent AEs (TEAEs) and immune-related AEs (irAEs)

Timeframe: Up to 3 years and 6 months

Part 2B: Number of participants with SAEs, TEAEs and irAEs

Timeframe: Up to 3 years and 6 months

Part 1: Number of participants with abnormality in hematology parameters

Timeframe: Up to 3 years and 6 months

Part 2B: Number of participants with abnormality in hematology parameters

Timeframe: Up to 3 years and 6 months

Part 1: Number of participants with abnormality in clinical chemistry parameters

Timeframe: Up to 3 years and 6 months

Part 2B: Number of participants with abnormality in clinical chemistry parameters

Timeframe: Up to 3 years and 6 months

Part 1: Number of participants with abnormality in electrocardiogram (ECG) parameters

Timeframe: Up to 3 years and 6 months

Part 2B: Number of participants with abnormality in ECG parameters

Timeframe: Up to 3 years and 6 months

Part 2A: Objective response rate (ORR)

Timeframe: Up to 3 years and 6 months

Secondary outcomes:

Part 1a: Area under the concentration-time curve from time zero to last measurable concentration (AUC [0-last]) of TSR-033

Timeframe: Pre-dose, 0.25, 0.5, 1.5, 3, 24, 48, 96 and 168 hours

Part 1b: AUC (0-last) of TSR-033

Timeframe: Pre-dose, 0.25, 0.5, 1.5, 3, 24, 48, 96, 168, 336 and 504 hours

Part 1c: AUC (0-last) of TSR-033 and dostarlimab

Timeframe: Pre-dose, 0.25, 0.5, 1.0, 1.5, 3, 24, 48, 96, 168 and 336 hours

Part 1a: AUC extrapolated from time zero to infinity (AUC[0-inf]) of TSR-033

Timeframe: Pre-dose, 0.25, 0.5, 1.5, 3, 24, 48, 96 and 168 hours

Part 1b: AUC (0-inf) of TSR-033

Timeframe: Pre-dose, 0.25, 0.5, 1.5, 3, 24, 48, 96, 168, 336 and 504 hours

Part 1c: AUC (0-inf) of TSR-033 and dostarlimab

Timeframe: Pre-dose, 0.25, 0.5, 1.0, 1.5, 3, 24, 48, 96, 168 and 336 hours

Part 1a: AUC over a dosing interval at steady state (AUCtau) of TSR-033

Timeframe: Pre-dose, 0.25, 0.5, 1.5, 3, 24, 48, 96 and 168 hours

Part 1b: AUCtau of TSR-033

Timeframe: Pre-dose, 0.25, 0.5, 1.5, 3, 24, 48, 96, 168, 336 and 504 hours

Part 1c: AUCtau of TSR-033 and dostarlimab

Timeframe: Pre-dose, 0.25, 0.5, 1.0, 1.5, 3, 24, 48, 96, 168 and 336 hours

Part 1a: Maximum concentration (Cmax) of TSR-033

Timeframe: Pre-dose, 0.25, 0.5, 1.5, 3, 24, 48, 96 and 168 hours

Part 1b: Cmax of TSR-033

Timeframe: Pre-dose, 0.25, 0.5, 1.5, 3, 24, 48, 96, 168, 336 and 504 hours

Part 1c: Cmax of TSR-033 and dostarlimab

Timeframe: Pre-dose, 0.25, 0.5, 1.0, 1.5, 3, 24, 48, 96, 168 and 336 hours

Part 1a: Clearance (CL) of TSR-033

Timeframe: Pre-dose, 0.25, 0.5, 1.5, 3, 24, 48, 96 and 168 hours

Part 1b: CL of TSR-033

Timeframe: Pre-dose, 0.25, 0.5, 1.5, 3, 24, 48, 96, 168, 336 and 504 hours

Part 1c: CL of TSR-033 and dostarlimab

Timeframe: Pre-dose, 0.25, 0.5, 1.0, 1.5, 3, 24, 48, 96, 168 and 336 hours

Part 1a: Volume of distribution at steady state (Vss) of TSR-033

Timeframe: Pre-dose, 0.25, 0.5, 1.5, 3, 24, 48, 96 and 168 hours

Part 1b: Vss of TSR-033

Timeframe: Pre-dose, 0.25, 0.5, 1.5, 3, 24, 48, 96, 168, 336 and 504 hours

Part 1c: Vss of TSR-033 and dostarlimab

Timeframe: Pre-dose, 0.25, 0.5, 1.0, 1.5, 3, 24, 48, 96, 168 and 336 hours

Part 1a: Terminal half-life (t1/2) of TSR-033

Timeframe: Pre-dose, 0.25, 0.5, 1.5, 3, 24, 48, 96 and 168 hours

Part 1b: t1/2 of TSR-033

Timeframe: Pre-dose, 0.25, 0.5, 1.5, 3, 24, 48, 96, 168, 336 and 504 hours

Part 1c: t1/2 of TSR-033 and dostarlimab

Timeframe: Pre-dose, 0.25, 0.5, 1.0, 1.5, 3, 24, 48, 96, 168 and 336 hours

Part 1: Number of participants with anti-TSR-033 antibodies

Timeframe: Up to 3 years and 6 months

Part 2: Number of participants with anti-TSR-033 antibodies

Timeframe: Up to 3 years and 6 months

Part 1: ORR

Timeframe: Up to 3 years and 6 months

Part 2: Duration of response (DOR)

Timeframe: Up to 3 years and 6 months

Part 2: Disease control rate (DCR)

Timeframe: Up to 3 years and 6 months

Interventions:
Drug: TSR-033
Drug: Dostarlimab
Drug: mFOLFOX6
Drug: FOLFIRI
Drug: Bevacizumab
Enrollment:
111
Observational study model:
Not applicable
Primary completion date:
2022-02-06
Time perspective:
Not applicable
Clinical publications:
Bajor D, Chung K, Cleary J, Diaz-Padilla I, Ellis C, Falchook G, et al. . CITRINO: Phase 1 dose escalation study of anti-LAG-3 antibody encelimab alone or in combination with anti-PD-1 dostarlimab in patients with advanced/metastatic solid tumours. BJC Rep. 2025;3: 10. doi:10.1038/s44276-024-00118-x https://www.nature.com/articles/s44276-024-00118-x?utm_source=rct_congratemailt&utm_medium=email&utm_campaign=oa_20250227&utm_content=10.1038/s44276-024-00118-x PMID: 40016550 DOI: 10.1038/s44276-024-00118-x
Medical condition
Neoplasms
Product
fluorouracil
Collaborators
GlaxoSmithKline
Study date(s)
August 2017 to February 2023
Type
Interventional
Phase
1

Participation criteria

Sex
Female & Male
Age
18+ years
Accepts healthy volunteers
No
  • Inclusion Criteria for participants in Part 1:
  • The participant is >=18 years of age.

Trial location(s)

Location
Status
Contact us
Contact us
Location
GSK Investigational Site
Houston, Texas, United States, 77030
Status
Study Complete
Location
GSK Investigational Site
San Antonio, Texas, United States, 78229
Status
Study Complete
Location
GSK Investigational Site
Sarasota, Florida, United States, 34232
Status
Study Complete
Location
GSK Investigational Site
Villejuif cedex, France, 94805
Status
Study Complete
Location
GSK Investigational Site
Boston, Massachusetts, United States, 02115
Status
Study Complete
Location
GSK Investigational Site
Oklahoma City, Oklahoma, United States, 73104
Status
Study Complete
Location
GSK Investigational Site
Cleveland, Ohio, United States, 44106
Status
Study Complete
Location
GSK Investigational Site
Pittsburgh, Pennsylvania, United States, 15232
Status
Study Complete
Location
GSK Investigational Site
Tampa, Florida, United States, 33612
Status
Study Complete
Location
GSK Investigational Site
Los Angeles, California, United States, 90095
Status
Study Complete
Location
GSK Investigational Site
Greenville, South Carolina, United States, 29605
Status
Study Complete
Location
GSK Investigational Site
Whittier, California, United States, 90603
Status
Study Complete

Study documents

Protocol
Available language(s): English
Statistical analysis plan
Available language(s): English

If you wish to request for full study report, please contact - [email protected]

Results overview

Results posted on ClinicalTrials.gov

Recruitment status
Completed
Actual primary completion date
2022-02-06
Actual study completion date
2023-13-02

Plain language summaries

Summary of results in plain language
Available language(s): English, French

To view plain language summaries on trialsummaries.com click here.

Additional information about the trial

Additional information
Not applicable
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