Safety and Preliminary Anti-Tumor Activity of TYRA-430 in Advanced Hepatocellular Carcinoma and Other Solid Tumors With Activating FGF/FGFR Pathway Aberrations

Phase 1

Recruiting

• Conditions: Metastatic Hepatocellular Carcinoma; Solid Tumor, Adult; FGFR4 Gene Mutation; FGFR3 Gene Fusions; Solid Tumors; FGFR Gene Alterations; FGFR3 Gene Alteration; FGFR3 Gene Mutation; Advanced Solid Tumors; FGFR Gene Amplification
• Interventions: Drug: TYRA-430

• Registration Number: NCT06915753
• Lead Sponsor: Tyra Biosciences, Inc

Brief Summary

A Phase 1 study to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamic (PD), and preliminary antitumor activity of TYRA-430 in cancers with FGF/FGFR pathway aberrations, including locally advanced/metastatic hepatocellular carcinoma and other advanced solid tumors.

Detailed Description

This is an open-label, multi-center, first-in-human, Phase 1 global study of TYRA-430, a first-in-class, selective, reversible fibroblast growth factor receptor (FGFR) 4 and 3 inhibitor, in locally advanced/metastatic hepatocellular carcinoma and other advanced solid tumors that contain FGF/FGFR pathway aberrations.

Study Timeline

• Study First Submitted: 2025-03-31
• Study First Submitted QC: 2025-03-31
• Status Verified: 2025-04
• Study Start: 2025-04
• Study First Posted: 2025-04-08
• Last Update Submitted: 2025-04-28
• Last Update Posted: 2025-05-01
• Primary Completion: 2028-01
• Study Completion: 2028-09

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 100

Inclusion Criteria

All Patients:

• Age ≥ 18 years
• Eastern Cooperative Oncology Group (ECOG) performance status of ≤1.
• Adequate end organ function.
• Ability to swallow oral formulations.
• Ability to understand and willingness to sign the ICF.

Part A:

• Histologically confirmed locally advanced unresectable/metastatic HCC or histologically confirmed advanced solid tumor with documented FGF/FGFR pathway alterations

• For participants with histologically confirmed locally advanced or metastatic HCC:

  • Barcelona Clinic Liver Cancer (BCLC) stage B that is not eligible for locoregional therapy, or stage C.
  • Child-Pugh Score class A

• Must have previously received SOC appropriate for their tumor type. Any number of prior therapies, including FGFR inhibitors, are permitted.

• Agree to provide archival tumor tissue no older than 2 years from the time of enrollment, if available. If an archived specimen is not available, a biopsy is not required.

Part B, Cohort 1:

• Histologically confirmed locally advanced/metastatic HCC who have previously received standard of care.
• Barcelona Clinic Liver Cancer (BCLC) stage B that is not eligible for locoregional therapy, or stage C.
• Child-Pugh Score class A
• Availability of an archival formalin-fixed paraffin-embedded (FFPE) tumor tissue specimen obtained ≤2 years prior to screening for submission to sponsor-designated central laboratory for FGF19 IHC testing.
• At least 1 measurable lesion by RECIST v1.1.

Part B, Cohort 2:

• Histologically confirmed advanced solid tumor except FGFR3-altered urothelial carcinoma and primary central nervous system tumors who have previously received standard of care. Note: Participants with confirmed diagnosis of locally advanced or metastatic HCC are not eligible for Cohort 2.
• Must have an eligible activating gain-of-function alteration in the FGFR3 or FGFR4 gene, or focal amplifications of FGF19
• Archival tumor tissue biopsy specimen no older than 2 years from the time of enrollment, if available. If a tissue biopsy specimen is not available, a biopsy is not required.
• At least 1 measurable lesion by RECIST v1.1.

Key

Exclusion Criteria

All Patients:

• Have disease that is suitable for local therapy administered with curative intent.

• Have not recovered from reversible toxicity of prior anticancer therapy to < Grade 1 or baseline (except toxicities that are not clinically significant or not expected to resolve, including but not limited to, alopecia, fatigue, skin discoloration, or Grade 1 neuropathy).

• Have received the following anticancer therapy:

  1. Any immunotherapy or other antibody therapy within 28 days prior to the first dose of the study drug.
  2. A TKI < 5 days or 5X the terminal Phase elimination half-lives, whichever is longer, prior to the first dose of TYRA-430.
  3. Other systemic therapy not listed above < 14 days prior to the first dose of the study drug.

• Participant discontinued a prior anti-FGFR therapy due to significant toxicity, defined as hepatotoxicity ≥ Grade 3 or any Grade 4 toxicity according to CTCAE v5.0.

• Has a serum phosphorus level > upper limit of normal (ULN) during screening that remains >ULN despite medical management.

• History of or current uncontrolled cardiovascular disease.

• Active, symptomatic, or untreated brain metastases.

• Have a diagnosis of primary CNS malignancies.

• Gastrointestinal disorders that will affect oral administration or absorption of TYRA-430.

• Females who are pregnant, breastfeeding, or planning to become pregnant and males who plan to father a child while enrolled in this study.

• Any reason that, in the view of investigator, would substantially impair the ability of the participant to comply with study procedures and increase the risk to the participant.

Part B, Cohort 1:

• Known fibrolamellar HCC, sarcomatoid HCC, or mixed cholangiocarcinoma and HCC.
• Prior treatment with pan-FGFR inhibitors or FGFR4-selective inhibitors.

Part B, Cohort 2:

• Histologically confirmed locally advanced/metastatic HCC.
• Histologically confirmed urothelial cancer.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SEQUENTIAL

Arm && Interventions

Group	Intervention	Description
Part A - Dose Escalation	TYRA-430	Dose escalation of TYRA-430 as monotherapy at various dose levels.
Part B - Cohort 1 Dose Expansion	TYRA-430	Dose expansion group for TYRA-430 monotherapy in advanced HCC at a dose(s) determined in Part A.
Part B - Cohort 2 Dose Expansion	TYRA-430	Dose expansion group for TYRA-430 monotherapy in advanced solid tumors at a dose(s) determined in Part A.

Primary Outcome Measures

Name	Time	Method
Maximum tolerated dose (MTD)	Up to 1 year	MTD determination: dose limiting toxicity (DLT) rate in the first 28-day cycle
Rate and severity of adverse events of TYRA-430 as monotherapy	First dose of study drug through 28 days after the last dose of study drug	Number of participants with TEAEs as assessed by CTCAE, v5.0
Recommended Phase 2 dose(s) of TYRA-430	Up to 2 years	To determine recommended Phase 2 dose(s) of TYRA-430

Secondary Outcome Measures

Name	Time	Method
Cmax	Up to 2 years
Tmax	Up to 2 years
AUC0-last	Up to 2 years
AUCTau	Up to 2 years
AUC0-∞	Up to 2 years
Vd/F	Up to 2 years
t1/2	Up to 2 years
CL/F	Up to 2 years
Overall Response Rate (ORR)	Up to 3.5 years	The proportion of patients who experience a best response of confirmed CR or PR per RECIST 1.1
Duration of Response (DOR)	Up to 3.5 years	Time from first investigator-assessed response to radiographic disease progression or death.
Disease Control Rate (DCR)	Up to 3.5 years	Best response of CR, PR, or SD per RECIST v1.1 \> 12 months.
Time to Response (TTR)	Up to 3.5 years	The median time from the start of therapy to first response in confirmed responders.

Trial Locations

Locations (5)

USC Norris Comprehensive Cancer Center; 🇺🇸 Los Angeles, California, United States

Stanford Cancer Institute; 🇺🇸 Stanford, California, United States

John Hopkins University; 🇺🇸 Baltimore, Maryland, United States

Mass General Cancer Center; 🇺🇸 Boston, Massachusetts, United States

University Health Network Princess Margaret Cancer Center; 🇨🇦 Toronto, Ontario, Canada