Skip to content

A Phase 2A/B, Multi-center, Open-Label Study Evaluating the Efficacy and Safety of Dabogratinib (TYRA-300) in Participants with Low Grade Upper Tract Urothelial Carcinoma (SURF303)

Status
Not yet recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2025-523539-20-00
Enrollment
12
Registered
2026-05-28
Start date
Unknown
Completion date
Unknown
Last updated
2026-05-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Low Grade Upper Tract Urothelial Carcinoma

Brief summary

Phase 2A: 1. Complete Response rate within 6 months. 2. Determination of the recommended dose for Phase 2B based on integrated safety, PK and efficacy data, Phase 2B: Complete Response rate within 6 months.

Detailed description

1. Complete Response rate within 6 months., 2. Duration of Response in participants with LG UTUC with FGFR3 altered tumours; Complete Response rate in 12months and 24 months. Response rate within 6 months., 3. Incidence and severity of Adverse Events, 4. PK parameters may include Cmax, Tmax, AUC0-last, AUCTau, AUC0-infinity, Vd/F, CL/F, and t1/2., 5. Proportion of participants who did not undergo nephrectomy or nephroureterectomy, 6. Proportion of participants with unresectable disease at baseline who convert to resectable disease or CR on dabogratinib, as assessed by the Investigator

Interventions

None listed

Sponsors

Tyra Biosciences Inc.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Phase 2A: 1. Complete Response rate within 6 months. 2. Determination of the recommended dose for Phase 2B based on integrated safety, PK and efficacy data, Phase 2B: Complete Response rate within 6 months.

Secondary

MeasureTime frame
1. Complete Response rate within 6 months., 2. Duration of Response in participants with LG UTUC with FGFR3 altered tumours; Complete Response rate in 12months and 24 months. Response rate within 6 months., 3. Incidence and severity of Adverse Events, 4. PK parameters may include Cmax, Tmax, AUC0-last, AUCTau, AUC0-infinity, Vd/F, CL/F, and t1/2., 5. Proportion of participants who did not undergo nephrectomy or nephroureterectomy, 6. Proportion of participants with unresectable disease at baseline who convert to resectable disease or CR on dabogratinib, as assessed by the Investigator

Outcome results

None listed

Source: EU CTIS · Data processed: May 29, 2026