A Phase 1 Study of AB521 Monotherapy and Combination Therapies in Renal Cell Carcinoma and Other Solid Tumors (ARC-20)

2024-519142-70-00 Protocol ARC-20 Human pharmacology (Phase I) - Other Authorised, recruiting

Start 19 Nov 2025 · Status Authorised, recruiting · 1 EU/EEA countries · 1 sites · Protocol ARC-20

Overview

Sponsor-declared trial summary

Phase Human pharmacology (Phase I) - Other
Status Authorised, recruiting
Participants planned 289
Countries 1
Sites 1

Solid Tumors

Key facts

Sponsor
Arcus Biosciences Inc.
Participant type
Patients
Age range
18-64 years, 65+ years
Gender
Male and Female
Therapeutic area
Diseases [C] - Neoplasms [C04]
Trial duration
19 Nov 2025 → ongoing
Decision date (initial)
2025-05-27
Transition trial
No
Low-intervention
No
Rare-disease indication
No
Vulnerable population
Yes

External identifiers

EU CT number
2024-519142-70-00
ClinicalTrials.gov
NCT05536141

Trial design

CTIS Part I — objectives, methods, condition coding

Conditions and MedDRA coding

Solid Tumors

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Arcus Biosciences Inc.

Sponsor organisation
Arcus Biosciences Inc.
Address
3928 Point Eden Way
City
Hayward
Postcode
94545-3719
Country
United States

Scientific contact point

Organisation
Arcus Biosciences Inc.
Contact name
Medical Director

Public contact point

Organisation
Arcus Biosciences Inc.
Contact name
Medical Director

Locations

1 EU/EEA country · 1 investigational sites

By country

CountryMS statusPlanned subjectsSites
Spain Authorised, recruiting 7 1
Rest of world
United States, United Kingdom, Korea, Republic of, Australia
282

Investigational sites

Spain

1 site · Authorised, recruiting
Hospital Universitari Vall D Hebron
Medical Oncologist, Passeig De La Vall D'Hebron 119-129, 08035, Barcelona

Country notifications

Trial-start, recruitment-start, end and early-termination notifications submitted per Member State

Country Trial startTrial end Recruitment startRecruitment end Early termination
Spain 2025-11-19

Application history

5 submissions — initial application plus substantial / non-substantial modifications

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2025-02-28 Spain Acceptable
2025-05-23
2025-05-27
2 SUBSTANTIAL MODIFICATION SM-1 2025-09-04 Spain Acceptable
2025-10-21
2025-10-30
3 NON SUBSTANTIAL MODIFICATION NSM-1 2025-11-21 Spain Acceptable
2025-10-21
2025-11-21
4 SUBSTANTIAL MODIFICATION SM-2 2026-02-27 Spain Acceptable
2026-05-05
2026-05-08
5 NON SUBSTANTIAL MODIFICATION NSM-2 2026-05-14 Spain Acceptable
2026-05-05
2026-05-14