Safety and Preliminary Anti-Tumor Activity of TYRA-300 in Advanced Urothelial Carcinoma and Other Solid Tumors With FGFR3 Gene Alterations (SURF301)

January 8, 2026 updated by: Tyra Biosciences, Inc

A Multicenter, Open-label Phase 1/2 Study of TYRA300 in Advanced Urothelial Carcinoma and Other Solid Tumors With Activating FGFR3 Gene Alterations (SURF301)

The purpose of this study is to evaluate the safety, tolerability, pharmacokinetics (PK), and preliminary antitumor activity of TYRA-300 in cancers with FGFR3 activating gene alterations, including locally advanced/metastatic urothelial carcinoma of the bladder and urinary tract and other advanced solid tumors.

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.

Detailed Description

This is a single arm, multi-part, phase 1/2 global trial studying TYRA-300, a novel, potent fibroblast growth factor receptor (FGFR) 3-selective tyrosine kinase inhibitor, in advanced/metastatic urothelial carcinoma of the bladder and urinary tract, that contain activating gene alterations of FGFR3. Phase 1 is a dose-escalation study to evaluate the safety, tolerability, and PK of TYRA-300 to determine the optimal and maximum tolerated dose (MTD) and recommended phase 2 dose (RP2D). Phase 2 will evaluate the preliminary antitumor activity of TYRA-300 in cancers with FGFR3 activating gene alterations, including locally advanced/metastatic urothelial carcinoma of the bladder and urinary tract and other advanced solid tumors.

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 (Estimated)

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.
310

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 2
  • 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

  • Australia
    • New South Wales
      • Macquarie Park, New South Wales, Australia, 2109
        • Macquarie University
    • Queensland
      • Southport, Queensland, Australia, 4215
        • Tasman Oncology
      • Woolloongabba, Queensland, Australia, 4102
        • Princess Alexandra Hospital
    • Victoria
      • Heidelberg, Victoria, Australia, 3084
        • Austin Health
      • Melbourne, Victoria, Australia, 3000
        • Peter MacCallum Cancer Research Unit
    • Washington
      • Nedlands, Washington, Australia, 6009
        • Linear Clinical Research Limited
  • France
      • Saint-Herblain, France, 44805
        • Institut de Cancérologie de l'Ouest (ICO)
      • Toulouse, France, 31059
        • Institut Claudius Regaud, IUCT-Oncopole
      • Villejuif, France, 94805
        • Gustave Roussy (Institut de Cancerologie Gustave-Roussy)
  • Spain
      • Barcelona, Spain, 08035
        • Vall d'Hebron Institut d'Oncologia (VHIO)
      • Barcelona, Spain, 08023
        • NEXT Barcelona - Hospital Quironsalud Barcelona
      • Madrid, Spain, 28223
        • NEXT Madrid - Hospital Universitario Quironsalud Madrid
  • United States
    • Massachusetts
      • Boston, Massachusetts, United States, 02215
        • Dana Farber Cancer Institute
      • Worchester, Massachusetts, United States, 01655
        • UMass Memorial Medical Center
    • New York
      • New York, New York, United States, 10021
        • Memorial Sloan Kettering Cancer Center (MSKCC)
    • North Carolina
      • Durham, North Carolina, United States, 27710
        • Duke Cancer Institute (Dci) - Duke Cancer Center
    • Ohio
      • Cleveland, Ohio, United States, 44195
        • Cleveland Clinic - Main Campus
    • Tennessee
      • Nashville, Tennessee, United States, 37232
        • Vanderbilt University Medical Center (VUMC) - Vanderbilt-Ingram Cancer Center (VICC) - Nashville
    • Washington
      • Seattle, Washington, United States, 98109
        • Seattle Cancer Care Alliance (SCCA) - South Lake Union

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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

Phase 1 Part A and Part B

  • Men and women 18 years of age or older.
  • Eastern Cooperative Oncology Group (ECOG) performance status of ≤1.
  • Histologically confirmed advanced solid tumor who have exhausted standard therapeutic options.
  • Evaluable (Part A) or measurable (Part B) disease according to RECIST v1.1.
  • Histologically confirmed advanced solid tumor with an eligible FGFR3 gene mutation or fusion (Part B).

Phase 2

  • Men and women 18 years of age or older.
  • ECOG performance status of 0-2 or Karnofsky Performance Scale (KPS) >70.
  • At least 1 measurable lesion by RECIST v1.1.

  • Histologically confirmed locally advanced/metastatic tumor in one of the following categories:

    • Urothelial carcinoma with an eligible FGFR3 gene mutation or rearrangement who have progressed on a prior FGFR inhibitor and presence of a resistance mutation or other kinase domain mutation.
    • Urothelial carcinoma with an eligible FGFR3 gene mutation or rearrangement who has not received a prior FGFR inhibitor.
    • Any solid tumor with an eligible FGFR3 gene mutation or rearrangement.

Exclusion Criteria (All Phases):

  • Has a serum phosphorus level > upper limit of normal (ULN) during screening that remains >ULN despite medical management.
  • Any ocular condition likely to increase the risk of eye toxicity.
  • History of or current uncontrolled cardiovascular disease.
  • Active, symptomatic, or untreated brain metastases.
  • Gastrointestinal disorders that will affect oral administration or absorption of TYRA-300.
  • Females who are pregnant, breastfeeding, or planning to become pregnant and males who plan to father a child while enrolled in this study.

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: Non-Randomized
  • Interventional Model: Sequential 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: Phase 1 Part A - dose escalation
TYRA-300 taken once daily by mouth in 28-day cycles starting at 10 mg daily.
Drug: TYRA-300
TYRA-300 is an oral, novel potent FGFR 3-selective tyrosine kinase inhibitor that targets tumors that contain activating gene alterations of FGFR3.
Experimental: Phase 1 Part B - dose expansion
TYRA-300 taken once or twice daily by mouth in 28-day cycles.
Drug: TYRA-300
TYRA-300 is an oral, novel potent FGFR 3-selective tyrosine kinase inhibitor that targets tumors that contain activating gene alterations of FGFR3.
Experimental: Phase 2
TYRA-300 taken once or twice daily by mouth in 28-day cycles at doses determined during Phase 1.
Drug: TYRA-300
TYRA-300 is an oral, novel potent FGFR 3-selective tyrosine kinase inhibitor that targets tumors that contain activating gene alterations of FGFR3.

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
Time Frame
Phase 1 Part A: To determine the maximum tolerated doses (MTD).
Time Frame: Initiation of study treatment through 28 days.
Initiation of study treatment through 28 days.
Phase 1 Part B: To determine the recommended Phase 2 dose (R2PD).
Time Frame: Initiation of study treatment through 28 days (up to approximately 18 months).
Initiation of study treatment through 28 days (up to approximately 18 months).
Phase 2: Overall Response Rate (ORR), defined by RECIST v1.1.
Time Frame: Initiation of study treatment until disease progression, death, unacceptable toxicity, or withdrawal (up to 2 years).
Initiation of study treatment until disease progression, death, unacceptable toxicity, or withdrawal (up to 2 years).

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
Number of participants with adverse events (AEs) and serious adverse events (SAEs) as a measure of safety and tolerability.
Time Frame: Initiation of study treatment through 28-days post treatment (up to 2 years).
Initiation of study treatment through 28-days post treatment (up to 2 years).
Frequency in changes in laboratory parameters and physical signs of toxicity.
Time Frame: Initiation of study treatment through 28-days post treatment (up to 2 years).
Initiation of study treatment through 28-days post treatment (up to 2 years).
Pharmacokinetics: maximum plasma concentration (Cmax).
Time Frame: Initiation of study treatment through Cycle 3 Day 1 (each cycle is 28 days).
Initiation of study treatment through Cycle 3 Day 1 (each cycle is 28 days).
Pharmacokinetics: time to reach maximum plasma concentration (Tmax).
Time Frame: Initiation of study treatment through Cycle 3 Day 1(each cycle is 28 days).
Initiation of study treatment through Cycle 3 Day 1(each cycle is 28 days).
Pharmacokinetics: area under the plasma concentration-time curve (AUC).
Time Frame: Initiation of study treatment through Cycle 3 Day 1 (each cycle is 28 days).
Initiation of study treatment through Cycle 3 Day 1 (each cycle is 28 days).
Pharmacokinetics: half-life of TYRA-300 (t1/2).
Time Frame: Initiation of study treatment through Cycle 3 Day 1 (each cycle is 28 days).
Initiation of study treatment through Cycle 3 Day 1 (each cycle is 28 days).
ORR is defined as the proportion of participants with complete response (CR) or partial response (PR) as determined by the investigator using RECIST V1.1.
Time Frame: From enrollment, every 8 or 12 weeks (up to 2 years).
From enrollment, every 8 or 12 weeks (up to 2 years).
Duration of response will be defined as the time from the initial CR or PR to the time of relapse or death, whichever occurs first among participant with an objective response.
Time Frame: From enrollment, every 8 or 12 weeks (up to 5 years).
From enrollment, every 8 or 12 weeks (up to 5 years).
Disease control rate is defined as the proportion of participants having a CR, PR or stable disease (SD) for >12 weeks.
Time Frame: From enrollment up to 5 years.
From enrollment up to 5 years.
Time to response is defined as time to first CR or PR that is subsequently confirmed according to RECIST v1.1.
Time Frame: Up to 5 years.
Up to 5 years.
Progression-free survival is defined as the time from the date of first study drug administration to the earliest date of documented disease progression or death.
Time Frame: From the date of the first dose of study drug until disease progression or death as assessed up to the last efficacy assessment for disease progression (up to 5 years)].
From the date of the first dose of study drug until disease progression or death as assessed up to the last efficacy assessment for disease progression (up to 5 years)].

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.
Tyra Biosciences, Inc

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Chair: Doug Warner, Tyra Biosciences, Inc

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 22, 2022

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.
November 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.
June 1, 2027

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).
September 6, 2022

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.
September 15, 2022

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.
September 16, 2022

Study Record Updates

Last Update Posted (Estimated)

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.
January 12, 2026

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.
January 8, 2026

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.
January 1, 2026

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.
  • TYR300-101

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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