A Study to Learn How Different Amounts of the Study Medicine Called PF-07999415 are Tolerated and Act in the Body in Healthy Adults

2024-520380-13-00 Protocol C5671001 Human pharmacology (Phase I) - First administration to humans Ongoing, recruitment ended

Start 17 Jun 2025 · Status Ongoing, recruitment ended · 1 EU/EEA countries · 1 sites · Protocol C5671001

Overview

Sponsor-declared trial summary

Phase Human pharmacology (Phase I) - First administration to humans
Status Ongoing, recruitment ended
Participants planned 53
Countries 1
Sites 1

CCI

Key facts

Sponsor
Pfizer Inc.
Participant type
Healthy volunteers
Age range
18-64 years, 65+ years
Gender
Male and Female
Therapeutic area
Diseases [C] - Nutritional and Metabolic Diseases [C18]
Trial duration
17 Jun 2025 → ongoing
Decision date (initial)
2025-06-13
Transition trial
No
Low-intervention
No
Rare-disease indication
No
Vulnerable population
No

Trial design

CTIS Part I — objectives, methods, condition coding

Conditions and MedDRA coding

CCI

VersionLevelCodeTermSystem organ class
20.0 SOC 10027433 Metabolism and nutrition disorders 6

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Pfizer Inc.

Sponsor organisation
Pfizer Inc.
Address
66 Hudson Boulevard East
City
New York
Postcode
10001-2189
Country
United States

Scientific contact point

Organisation
Pfizer Inc.
Contact name
Clinical Medical Lead

Public contact point

Organisation
Pfizer Inc.
Contact name
Clinical Medical Lead

Locations

1 EU/EEA country · 1 investigational sites

By country

CountryMS statusPlanned subjectsSites
Belgium Ongoing, recruitment ended 53 1
Rest of world 0

Investigational sites

Belgium

1 site · Ongoing, recruitment ended
Pfizer Clinical Research Unit
None, Route de Lennik 808, B-1070, Brussels

Country notifications

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

Country Trial startTrial end Recruitment startRecruitment end Early termination
Belgium 2025-06-17 2025-06-20 2026-04-09

Application history

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

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2025-04-10 Belgium Acceptable with conditions
2025-06-04
2025-06-13
2 NON SUBSTANTIAL MODIFICATION NSM-1 2025-07-30 Belgium Acceptable with conditions
2025-06-04
2025-07-30
3 SUBSTANTIAL MODIFICATION SM-1 2025-08-25 Belgium Acceptable
2025-09-25
2025-09-30
4 NON SUBSTANTIAL MODIFICATION NSM-2 2025-12-10 Belgium Acceptable
2025-09-25
2025-12-10
5 SUBSTANTIAL MODIFICATION SM-2 2025-12-22 Belgium Acceptable
2026-01-20
2026-01-23