First time in human (FTIH) study to investigate the safety and preliminary activity of GSK5533524 alone or in combination in adult participants with advanced solid tumors

2025-524165-25-00 Protocol 300163 Human pharmacology (Phase I) - First administration to humans Authorised, recruitment pending

Status Authorised, recruitment pending · 4 EU/EEA countries · 9 sites · Protocol 300163

Overview

Sponsor-declared trial summary

Phase Human pharmacology (Phase I) - First administration to humans
Status Authorised, recruitment pending
Participants planned 97
Countries 4
Sites 9

Neoplasms

Key facts

Sponsor
Glaxosmithkline Research & Development Limited
Participant type
Patients
Age range
18-64 years, 65+ years
Gender
Male and Female
Therapeutic area
Diseases [C] - Neoplasms [C04]
Decision date (initial)
2026-05-22
Transition trial
No
Low-intervention
No
Rare-disease indication
No
Vulnerable population
Yes

Trial design

CTIS Part I — objectives, methods, condition coding

Conditions and MedDRA coding

Neoplasms

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Glaxosmithkline Research & Development Limited

Sponsor organisation
Glaxosmithkline Research & Development Limited
Address
79 New Oxford Street
City
London
Postcode
WC1A 1DG
Country
United Kingdom

Scientific contact point

Organisation
Glaxosmithkline Research & Development Limited
Contact name
EU GSK Clinical Trials Call Center

Public contact point

Organisation
Glaxosmithkline Research & Development Limited
Contact name
EU GSK Clinical Trials Call Center

Locations

4 EU/EEA countries · 9 investigational sites

By country

CountryMS statusPlanned subjectsSites
Denmark Authorised, recruitment pending 7 1
Finland Authorised, recruitment pending 7 1
France Not authorised 14 2
Spain Authorised, recruitment pending 24 5
Rest of world
Japan, United States, United Kingdom, Canada
45

Investigational sites

Denmark

1 site · Authorised, recruitment pending
Rigshospitalet
Phase 1 Unit, Department of Oncology, Blegdamsvej 9, 2100, Copenhagen Oe

Finland

1 site · Authorised, recruitment pending
HUS-yhtymae
HUS Comprehensive Cancer center, Haartmaninkatu 4, 00290, Helsinki

France

2 sites · Not authorised
Institut Bergonie
Unité d'Essais Cliniques de Phase Précoce, 180 R De Saint Genes, 229 Cours De L Argonne, Bordeaux
Institut Gustave Roussy
Département Innovations Thérapeutiques et Essais Précoces (DITEP), 114 Rue Edouard Vaillant, 94800, Villejuif

Spain

5 sites · Authorised, recruitment pending
Hospital Universitario Puerta De Hierro De Majadahonda
Oncología, Calle De Joaquin Rodrigo 2, 28222, Majadahonda
Clinica Universidad De Navarra
Oncología, Calle Marquesado De Santa Marta 1, 28027, Madrid
Hospital Universitario 12 De Octubre
Oncología, Avenida De Cordoba Sn, 28041, Madrid
Hospital Universitari Vall D Hebron
Oncología, Passeig De La Vall D'Hebron 119-129, 08035, Barcelona
Hospital Universitario Hm Sanchinarro
Oncología, Calle Ona 10, 28050, Madrid

Application history

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

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2026-03-13 Finland Acceptable
2026-05-21
2026-05-21
2 NON SUBSTANTIAL MODIFICATION NSM-1 2026-05-28 Finland Acceptable
2026-05-21
2026-05-28