FS120 Phase 1/1b Study in Patients With Advanced Malignancies

June 26, 2025 updated by: invoX Pharma Limited

A Phase 1/1b Open-Label Study to Evaluate the Safety and Antitumor Activity of FS120, an OX40/CD137 Bispecific Antibody, Alone and in Combination With Pembrolizumab, in Subjects With Advanced Malignancies

This is a Phase 1/1b, multicenter, open label study to evaluate the Safety and Antitumor Activity of FS120, an OX40/CD137 Bispecific Antibody, Alone and in Combination with Pembrolizumab, in Subjects with Advanced Malignancies

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
82

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

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

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Spain
      • Barcelona, Spain, 08035
        • Hospital Universitario Vall d'Hebron
      • Barcelona, Spain, 08023
        • NEXT Oncology, Hospital Quironsalud Barcelona
      • Madrid, Spain, 28040
        • Hospital Universitario Fundación Jiménez Díaz
      • Madrid, Spain, 28041
        • Hospital Universitario 12 de Octubre
      • Valencia, Spain, 46010
        • Hospital Clínico Universitario de Valencia
  • United States
    • Connecticut
      • New Haven, Connecticut, United States, 06511
        • Yale University
    • Texas
      • Houston, Texas, United States, 77030
        • MD Anderson Cancer Center
      • San Antonio, Texas, United States, 78229
        • South Texas Accelerated Research Therapeutics (START)
    • Utah
      • Salt Lake City, Utah, United States, 84112
        • Huntsman Cancer Institute, University of Utah

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

14 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Measurable disease
  • Eastern Cooperative Oncology Group Performance Status 0-1.
  • Highly effective contraception if risk of conception exists
  • A female subject is eligible if not pregnant, not breastfeeding, not a woman of childbearing potential (WOCBP) or is a WOCBP that uses highly effective contraception
  • Subjects with HIV who are healthy and how a low risk of acquired immunodeficiency syndrome related outcomes
  • For combination part: Subjects must have histologically confirmed locally advanced, unresectable or metastatic solid tumours where there is regulatory approval for use of pembrolizumab as a monotherapy agent

Exclusion Criteria:

  • Prior systemic anticancer therapy within 28 days or 5- half-lives, whichever is shorter, before the first dose of study drug.
  • Prior therapy with any OX40 agonist, CD137 (4-1BB) agonist, CD40 agonist, GITR, or CD27 targeting therapy (single agent or combination).
  • Prior radiotherapy within 2 weeks of start of study treatment.
  • HIV infected participants with a history of Kaposi sarcoma and/or Multicentric Castleman Disease.
  • Uncontrolled central nervous system (CNS) metastases and/or carcinomatous meningitis, primary CNS tumours, or solid tumours with CNS metastases as the only measurable disease.
  • Prior history of any grade ≥3 immune-related AE (irAE) that has not improved to grade ≤1; any grade ≥3 irAE that resulted in discontinuation of treatment, significant (grade ≥3 NCI CTCAE Version 5.0) treatment-related cytokine release syndrome.
  • Use of immunosuppressive agents, hypersensitivity or intolerance to monoclonal antibodies or their excipients, persistent grade ≥1 NCI CTCAE Version 5 toxicity related to prior therapy or any condition that would significantly impair and/or prohibit the participant's participation in the study, as per the investigator's judgement.
  • Vaccination with a live vaccine within 30 days before first dose of study drug.
  • Participants with a known additional malignancy that is progressing or has required active treatment in the past 3 years.
  • Participants with severe hypersensitivity (≥Grade 3) to pembrolizumab and/or any of its excipients.

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: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: FS120
Open-label study where FS120 will be administered as monotherapy or in combination with pembrolizumab in dose escalation and expansion cohorts
Drug: FS120
Dosing of participants with FS120 or the combination pembrolizumab will occur intravenously (IV), at a fixed dose in treatment cycles once every 4 weeks (Q4W) or once every 3 weeks (Q3W) until confirmed progressive disease (CPD)/immune-confirmed progressive disease (iCPD) or unacceptable toxicity.
Other Names:
  • Pembrolizumab (KEYTRUDA®)

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Incidence, severity, and duration of adverse events (AEs), serious adverse events (SAEs) and dose limiting toxicities (DLTs)
Time Frame: 24 months
Safety and tolerability will be evaluated by collection of AEs, SAEs and DLTs according to the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) Version 5.0.
24 months
Determination of a maximum tolerated dose (MTD) and/or recommended Phase 2 dose (RP2D)
Time Frame: 24 months
Toxicity will be evaluated according to the NCI CTCAE Version 5.0.
24 months

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
invoX Pharma Limited

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Merck Sharp & Dohme LLC

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)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 18, 2020

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
March 1, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
March 1, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 23, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 23, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
December 1, 2020

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 27, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 26, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
October 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • FS120-19101
  • 2021-002820-19 (EudraCT Number)
  • MK-3475-C82 (Other Identifier: Merck Sharp & Dohme LLC)
  • KEYNOTE-C82 (Other Identifier: Merck Sharp & Dohme LLC)

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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