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
Study complete
Study complete
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
    Primary completion date:
    2022-02-06
    Observational study model:
    Not applicable
    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
    Showing 1 - 6 of 12 Results

    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
    Study complete
    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
    Participate in clinical trial
    Access to clinical trial data by researchers
    Visit website