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TYRA-300

Phase 2

Low-grade NMIBC | Small molecule | Oncology |Tyra Biosciences, Inc.|Last Updated: Aug 6, 2026

Target and mechanism

Molecular targetFGFR3
Target classReceptor
ModalitySmall molecule

Also known as TYRA-300 60mg

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLED
Total Trials1
Total Enrollment90

FDA Designations

No designations recorded

Clinical trial landscape

TYRA-300 · 2 trials · 18 indications

Phase 2 1Phase 1 1
NCT06995677Efficacy and Safety of TYRA-300 in Participants With FGFR3 Altered Low Grade, Intermediate Risk Non-Muscle Invasive Bladder CancerLow-grade NMIBC
RECRUITING90 Analytics
PHASE2RECRUITING
Efficacy and Safety of TYRA-300 in Participants With FGFR3 Altered Low Grade, Intermediate Risk Non-Muscle Invasive Bladder Cancer
Low-grade NMIBCUnlock trial analytics

Study Endpoints

Primary Endpoints

To assess the efficacy of TYRA-300 in LG IR-NMIBC participants
at 3 months

Complete response (CR) rate

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

Secondary Endpoints

Duration of response (responders only)
time from initial response to confirmed recurrence of disease or death, up to 24 months
Time to recurrence (responders only)
time from start of response to confirmed recurrence of disease, up to 24 months
Recurrence-free survival rate (responders only)
at 12 months and 24 months
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Dose Cohort A (DCA)EXPERIMENTALTYRA-300 monotherapy in Participants with FGFR3 Altered Low Grade, Intermediate Risk Non-Muscle Invasive Bladder Cancer
Dose Cohort B (DCB)EXPERIMENTALTYRA-300 monotherapy in Participants with FGFR3 Altered Low Grade, Intermediate Risk Non-Muscle Invasive Bladder Cancer
Possible Dose Cohort C (DCC)EXPERIMENTALTo Be Determined- TYRA-300 monotherapy in Participants with FGFR3 Altered Low Grade, Intermediate Risk Non-Muscle Invasive Bladder Cancer
Phase 1 Part A - dose escalationEXPERIMENTALTYRA-300 taken once daily by mouth in 28-day cycles starting at 10 mg daily.
Phase 1 Part B - dose expansionEXPERIMENTALTYRA-300 taken once or twice daily by mouth in 28-day cycles.
Phase 2EXPERIMENTALTYRA-300 taken once or twice daily by mouth in 28-day cycles at doses determined during Phase 1.

Interventions

NameTypeDescription
TYRA-300 60mgDRUGSelf-administered 60mg dose Oral tablet(s) given daily
TYRA-300 50mgDRUGSelf-administered 50mg dose Oral tablet(s) given daily
TYRA-300 Dose TBDDRUGTo Be Determined Dose: Self-administered Oral tablet(s) given daily
TYRA-300DRUGTYRA-300 is an oral, novel potent FGFR 3-selective tyrosine kinase inhibitor that targets tumors that contain activating gene alterations of FGFR3.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites47

Inclusion Criteria: * Participants age 18 and over of informed consent and willing and able to comply with all requires study procedures * Able to understand and given written informed consent * Participants with histologically confirmed low-grade NMIBC within 6 weeks prior to randomization with pr...

Countries:United StatesAustraliaItalySpainFrance
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Recent Changes (Last 90 Days)

LOWAug 6, 2026NCT06995677lastUpdatePostDate: changed
LOWAug 6, 2026NCT06995677lastUpdatePostDate: changed
LOWJul 31, 2026NCT06995677lastUpdatePostDate: changed
LOWJul 31, 2026NCT06995677lastUpdatePostDate: changed
LOWJul 17, 2026NCT06995677lastUpdatePostDate: changed
LOWJul 17, 2026NCT06995677lastUpdatePostDate: changed
LOWJun 29, 2026NCT06995677lastUpdatePostDate: changed
LOWJun 29, 2026NCT06995677lastUpdatePostDate: changed
LOWJun 26, 2026NCT06995677lastUpdatePostDate: changed
LOWJun 26, 2026NCT06995677lastUpdatePostDate: changed
LOWJun 18, 2026NCT06995677lastUpdatePostDate: changed
LOWJun 18, 2026NCT06995677lastUpdatePostDate: changed
LOWJun 18, 2026NCT06995677lastUpdatePostDate: changed
LOWJun 18, 2026NCT06995677lastUpdatePostDate: changed

Frequently asked questions about TYRA-300

What is TYRA-300 used for?

TYRA-300 is an investigational small molecule being studied for achondroplasia, locally advanced urothelial carcinoma, and low-grade non-muscle invasive bladder cancer (NMIBC). It is in clinical development for these conditions and has not been approved by the FDA.

What does TYRA-300 target?

TYRA-300 targets FGFR3, a receptor tyrosine kinase. It is designed to act on FGFR3 alterations, which are relevant in certain cancers and achondroplasia. The drug is being evaluated in patients with FGFR3 gene mutations, amplifications, and fusions.

Who makes TYRA-300?

TYRA-300 is being developed by Tyra Biosciences, Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol TYRA. The company is conducting clinical trials to evaluate the drug's safety and efficacy in multiple patient populations.

What phase is TYRA-300 in?

TYRA-300 is in Phase 1 and Phase 2 clinical trials. A Phase 1 study is active but not recruiting, while two Phase 2 studies are currently recruiting participants. The drug remains investigational and is not yet approved for any indication.

What clinical trials is TYRA-300 in?

TYRA-300 is being studied in three trials: NCT05544552, a Phase 1 study in advanced urothelial carcinoma and other solid tumors with FGFR3 alterations; NCT06842355, a Phase 2 study in children with achondroplasia; and NCT06995677, a Phase 2 study in low-grade NMIBC with FGFR3 alterations.

Is TYRA-300 the same as TYRA-300 60mg or TYRA-300/kg?

Yes, TYRA-300 60mg, TYRA-300 0.125 mg/kg, and TYRA-300/kg are alternative names for the same drug, TYRA-300. These names reflect different dosing formulations or concentrations used in clinical trial protocols.