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Trackers› Clinical trials› Warsaw
Clinical trial register · Poland

Clinical Trials in Warsaw, 2026

Every study on the ClinicalTrials.gov registry that lists a site in Poland and is open, about to open, active-but-closed, or enrolling by invitation. Filter it, cite it, and take it away as a file.

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Source: ClinicalTrials.gov, U.S. National Library of Medicine. Complete coverage — all 2705 matching records held by the registry are in this view. Synced 28 Oct 2026, 03:18 UTC
2705
Studies in scope
all four open statuses
1389
Recruiting now
open to new participants
512
Lead sponsors
across recruiting studies
Top sites
Warsaw 31 Wroclaw 29 Krakow 28 Katowice 23 Poznan 21
Narrow the registerReset
Recruitment status
Phase
Lead sponsor
AstraZeneca95 Merck Sharp & Dohme LLC86 Medical University of Warsaw66 Hoffmann-La Roche61 Janssen Research & Development, LLC44 Clear sponsor filter
Site location
Warsaw31 Wroclaw29 Krakow28 Katowice23 Poznan21
All 50 locations
Target enrolment
to

Trials with a site in Warsaw

31 of 2705 studies
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Status
Study
Lead sponsor
Phase
Enrol
Sites in Poland
Start
Recruiting
Pfizer
Phase 2
24
Warsaw, Katowice
2026-05-28
Recruiting
Pfizer
Phase 2/3
1,156
Katowice, Krakow, Tarnów, Warsaw, Wroclaw, Ostrowiec Świętokrzyski
2026-02-11
Recruiting
Pfizer
Phase 3
450
Lublin, Warsaw, Chorzów, Katowice, Lodz, Ostrowiec Świętokrzyski
2025-12-02
Active, closed
Pfizer
Phase 2
128
Wroclaw, Gdansk, Ostrowiec Świętokrzyski, Rzeszów, Sosnowiec, Szczecin, Warsaw
2025-11-13
Recruiting
Pfizer
Phase 2
200
Warsaw, Chorzów, Gdansk, Lublin, Tarnów, Wroclaw
2025-10-30
Recruiting
Pfizer
Phase 2/3
982
Warsaw, Olsztyn, Koszalin, Poznan, Tomaszów Mazowiecki
2025-10-03
Recruiting
Pfizer
Phase 3
140
Krakow, Wroclaw, Lublin, Warsaw, Katowice, Rzeszów, Lodz
2025-09-10
Recruiting
Pfizer
Phase 3
400
Bydgoszcz, Krakow, Wroclaw, Warsaw, Opole
2025-08-05
Active, closed
Pfizer
Phase 3
208
Krakow, Wroclaw, Lublin, Warsaw, Bialystok, Katowice, Ossy, Rzeszów
2025-07-31
Recruiting
Pfizer
Phase 3
150
Krakow, Lublin, Warsaw, Chorzów, Katowice, Lodz, Ostrowiec Świętokrzyski
2025-07-24
Recruiting
Pfizer
Phase 3
714
Poznan, Lublin, Warsaw, Gdansk, Gliwice, Lodz
2025-07-23
Recruiting
Pfizer
Phase 3
674
Poznan, Krakow, Wroclaw, Lublin, Nowa Sól, Warsaw, Katowice, Sosnowiec
2025-04-01
Recruiting
Pfizer
Phase 3
723
Krakow, Oświęcim, Wroclaw, Lublin, Warsaw, Katowice
2025-03-11
Recruiting
Pfizer
Phase 3
211
Warsaw, Bialystok
2025-01-22
Active, closed
Pfizer
Phase 3
636
Bydgoszcz, Krakow, Wroclaw, Lublin, Warsaw
2024-11-15
Recruiting
Pfizer
Phase 3
900
Krakow, Wroclaw, Lublin, Warsaw, Koszalin, Opole, Piotrkow Trybunalski
2024-10-22
Active, closed
Pfizer
Phase 3
394
Osielsko, Warsaw, Szczecin, Lodz, Ostrowiec Świętokrzyski
2024-01-19
Active, closed
Pfizer
Phase 3
1,571
Bydgoszcz, Krakow, Warsaw, Bialystok, Katowice, Szczecin, Lodz
2023-11-08
Recruiting
Pfizer
Phase 3
318
Poznan, Krakow, Warsaw, Bialystok
2023-05-20
Active, closed
Pfizer
Phase 3
624
Krakow, Warsaw, Gdansk, Lodz
2023-03-03
Recruiting
Pfizer
Phase 2
36
Warsaw, Katowice, Krakow, Szczecin, Wroclaw
2022-12-16
Active, closed
Pfizer
Phase 3
854
Skórzewo, Katowice, Gdansk, Poznan, Warsaw, Wroclaw
2022-03-25
Recruiting
Pfizer
Phase 3
640
Poznan, Krakow, Wroclaw, Lublin, Warsaw, Katowice
2022-02-28
Recruiting
Pfizer
Phase 3
893
Bydgoszcz, Gdansk, Katowice, Poznan, Skorzewo, Warsaw, Wroclaw
2021-10-04
Active, closed
Pfizer
Phase 3
77
Warsaw
2021-09-29
Active, closed
Pfizer
Phase 3
118
Warsaw, Lodz, Rzeszów, Wroclaw
2021-08-12
Active, closed
Pfizer
Phase 3
257
Krakow, Poznan, Warsaw
2021-01-15
Active, closed
Pfizer
Phase 3
1,068
Gliwice, Grudziądz, Mysłowice, Piotrkow Trybunalski, Poznan, Skierniewice, Warsaw, Wroclaw
2019-12-30
Recruiting
A Study of Mevrometostat for Treatment of Relapsed/Refractory SCLC, Castration Resistant Prostate Cancer, and Follicular Lymphoma
NCT03460977Metastatic Castration Resistant Prostate Cancer (mCRPC), Small Cell Lung Cancer (SCLC), Follicular Lymphoma (FL)
DrugsMevrometostat·Xtandi·Itraconazole·Enzalutamide
Pfizer
Phase 1
453
Bydgoszcz, Koszalin, Krakow, Rzeszów, Warsaw
2018-04-17
Active, closed
Pfizer
Phase 3
1,054
Brzozów, Gdynia, Konin, Otwock, Warsaw
2017-12-18
Active, closed
Pfizer
Phase 3
296
Gdansk, Poznan, Szczecin, Warsaw
2017-04-27
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Cite this view

Priya Life Science (2026). Clinical trial register: studies with a Polish investigative site, filtered. Derived from ClinicalTrials.gov. Retrieved 28 October 2026. https://priyalifescience.com/clinical-trials-poland/city/warsaw

Query this register directly
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About this register

This register is built from ClinicalTrials.gov, the trial registry run by the U.S. National Library of Medicine. It includes every study on the registry that lists at least one investigative site in Poland and is recruiting, not yet recruiting, active but no longer recruiting, or enrolling by invitation: 2,705 studies in total at the last sync on 28 Oct 2026, 03:18 UTC. The full list can be downloaded as CSV or queried as JSON through the register API.

This page shows the 31 of those studies with a site in Warsaw that also match the filters currently applied.

How many clinical trials are recruiting in Warsaw?

18 of the 31 studies on this page are recruiting new participants as of the 28 Oct 2026, 03:18 UTC sync. A further 0 have not yet opened recruitment, 13 are active but closed to new participants, and 0 are enrolling by invitation only. Eligibility for any study is decided by its study team.

Summary by phase

Studies by phase (Warsaw), 31 studies
PhaseStudiesRecruitingShare
Phase 3241277.4%
Phase 24312.9%
Phase 2/3226.5%
Phase 1113.2%

Most active sponsors

Lead sponsors with the most studies (Warsaw)
Lead sponsorStudiesRecruiting
Pfizer3118
Listing here is informational and not medical advice; eligibility is determined by each study team. See also the Ireland, UK, EU, USA and China registers.