Optimise viewing for

Toggle between patient and health professional views. The patient version is simplified to help people easily find suitable trials, while the professional view provides full detail.

No longer recruiting (closed or complete)Last updated: 3 November 2025

SURF301: This phase I/II study is evaluating how safe, tolerable and effective a new drug (TYRA-300) is in people certain cancers with FGFR3 activating gene alterationsA Multicenter, Open-label Phase 1/2 Study of TYRA300 in Advanced Urothelial Carcinoma and Other Solid Tumors With Activating FGFR3 Gene Alterations (SURF301)

Trial purpose

Medical clipboardCancer treatment

Tumor type

Multi-Cancer Multi-Cancer

Age

People18+

Trial acronym

SURF301

Clinical summary

Summary

This trial is investigating TYRA-300, a new FGFR3-selective tyrosine kinase inhibitor, in cancers with FGFR3 activating gene alterations including locally advanced/metastatic urothelial carcinoma of the bladder and urinary tract and other advanced solid cancers.

Phase 1 is a dose-escalation study, with two parts. In Part A (dose-escalation), participants will receive TYRA-300 (taken once daily by mouth in 28-day cycles) in increasing doses, starting at 10mg daily. In Part B (dose-expansion), participants will receive TYRA-300 (orally, once daily in 28-day cycles) to continue to study the safety and effect at certain doses.

In Phase 2, participants will receive TYRA-3000 (orally, once daily in 28-day cycles) at the recommended doses determined during Phase 1.

Conditions

This trial is treating people with cancers with FGFR3 activating gene alterations, including locally advanced or metastatic urothelial carcinoma of the bladder and urinary tract and other advanced solid cancers

Eligibility

Inclusion

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 12 years of age or older.
  • ECOG performance status of 0-2 or Karnofsky Performance Scale (KPS) >70 for participants aged 12 to 17 years.
  • 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

  • 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.

Inclusion

  • Your cancer has spread to other parts of the body (metastatic) or has grown into nearby parts of the body (locally advanced).
  • Your cancer has not spread to other parts of the body (localised).
  • You have had treatment but your cancer has gotten worse or has not responded to the treatment you have been given.
  • You are able to swallow medication by mouth.

Exclusion

  • You have certain types of non-cancer medical conditions.
Message

Clinical trials have complex eligibility criteria, and other criteria may apply for this trial. Ask your doctor about whether this trial could be right for you.

Participating hospitals

+ Show non-recruiting hospitals

No longer recruiting (closed or complete) hospitals

InformationTell us if you find this trial availability is not accurate.Report inaccuracy

More information

Trial Identifiers

Information on this page is partially produced from ClinicalTrials.gov *. View further details about this trial on the registry via the links below:

Trial sponsor

Tyra Biosciences, Inc

Scientific Title

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

Get Support

Cancer Connect

You might find it helpful to speak to someone who has 'been there before'. Our Cancer Connect program can provide one-on-one phone support from someone who understands what you're going through and has clinical trials experience.

Know more about Cancer Connect

Cancer Council’s cancer nurses

If you need cancer information and practical support for yourself, a carer, family or friend, contact Cancer Council’s experienced cancer nurses on 131120.

Get support

Multilingual information

Learn more about clinical trials through this collection of resources in languages other than English.

View information