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Trackers› Clinical trials› Istanbul
Clinical trial register · Turkey

Clinical Trials in Istanbul, 2026

Every study on the ClinicalTrials.gov registry that lists a site in Turkey 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 5418 matching records held by the registry are in this view. Synced 11 Oct 2026, 03:18 UTC
5418
Studies in scope
all four open statuses
2461
Recruiting now
open to new participants
548
Lead sponsors
across recruiting studies
Top sites
Ankara 37 Istanbul 34 Izmir 22 Adana 16 Samsun 13
Narrow the registerReset
Recruitment status
Phase
Lead sponsor
Istanbul University - Cerrahpasa135 Marmara University100 AstraZeneca81 Merck Sharp & Dohme LLC69 Medipol University68 Clear sponsor filter
Site location
Ankara37 Istanbul34 Izmir22 Adana16 Samsun13
All 46 locations
Target enrolment
to

Trials with a site in Istanbul

34 of 5418 studies
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Status
Study
Lead sponsor
Phase
Enrol
Sites in Turkey
Start
Recruiting
Hoffmann-La Roche
Phase 2/3
650
Altındağ, Ankara, Antalya, Bakirkoy / Istanbul, Bornova, Izmir, Erdine, Istanbul, Izmir
2026-05-21
Recruiting
Hoffmann-La Roche
Phase 3
1,600
Istanbul, Adana, Ankara, Antalya, Izmir, Sariçam
2026-03-23
Recruiting
Hoffmann-La Roche
Phase 2
100
Ankara, Atakum, Istanbul, Izmir, Seyhan
2026-03-11
Recruiting
Hoffmann-La Roche
Phase 2
360
Kocaeli, Ankara, Istanbul, Izmir, Konya
2026-03-10
Recruiting
Hoffmann-La Roche
Not applicable
270
Adana, Bakirkoy Istanbul, Istanbul, Ümraniye / İstanbul
2025-04-14
Recruiting
Hoffmann-La Roche
Phase 3
450
Ankara, Bakirkoy / Istanbul, Istanbul, Izmir, Mersin
2025-04-09
Active, closed
Hoffmann-La Roche
Phase 3
1,130
Ankara, Istanbul, İzmit
2023-09-18
Recruiting
Hoffmann-La Roche
Phase 3
230
Adapazarı, Ankara, Bakirkoy / Istanbul, Diyarbakır, Istanbul, Izmir, Seyhan, Sihhiye/Ankara
2023-09-08
Recruiting
Hoffmann-La Roche
Phase 3
420
Ankara, Diyarbakır, Edirne, Istanbul, Izmir, Kadiköy, Seyhan, Sihhiye/Ankara
2023-06-07
Active, closed
Hoffmann-La Roche
Phase 3
922
Adana, Ankara, Diyarbakır, Edirne, Erzurum, Istanbul, Izmir, İzmit
2022-07-18
Active, closed
Hoffmann-La Roche
Phase 4
136
Ankara, Antalya, Istanbul, Izmir
2022-06-20
Active, closed
Hoffmann-La Roche
Phase 3
1,300
Istanbul, Samsun, Trabzon
2022-05-03
Active, closed
Hoffmann-La Roche
Phase 3
208
Ankara, Istanbul, Kocaeli, Lzmir, Samsun
2022-04-25
Active, closed
Hoffmann-La Roche
Phase 3
660
Ankara, Bursa, Denizli, Diyarbakır, Edirne, Istanbul, Izmir, İzmit
2021-11-18
Active, closed
Hoffmann-La Roche
Phase 3
478
Ankara, Istanbul, Sariyer
2021-10-27
Active, closed
Hoffmann-La Roche
Phase 3
83
Istanbul, Kocaeli, Konya, Malatya
2021-10-22
Active, closed
Hoffmann-La Roche
Phase 2
176
Adana, Ankara, Istanbul
2021-10-07
Active, closed
Hoffmann-La Roche
Phase 3
4,170
Sariçam, Ankara, Antalya, Edirne, Istanbul, Izmir, Kocaeli, Samsun
2021-08-27
Active, closed
Hoffmann-La Roche
Phase 3
451
Ankara, Istanbul, Kocaeli
2021-07-14
Active, closed
Hoffmann-La Roche
Observational
800
Adana, Ankara, Antalya, Denizli, Edirne, Istanbul, Izmir, Malatya
2021-05-10
Active, closed
Hoffmann-La Roche
Phase 3
1,188
Adana, Ankara, Antalya, Bornova, ?zm?r, Diyarbakır, Edirne, Istanbul, Izmir
2021-05-04
Active, closed
Hoffmann-La Roche
Phase 3
761
Adana, Ankara, Bakirkoy / Istanbul, Cordaleo, Edirne, Istanbul, Samsun
2021-05-03
Active, closed
Hoffmann-La Roche
Phase 3
557
Ankara, Bağcılar, Bakirkoy / Istanbul, Bursa, Istanbul, Izmir, Sihhiye/Ankara
2021-04-26
Active, closed
Hoffmann-La Roche
Phase 3
751
Ankara, Çankaya, Istanbul, Kocaeli, Lzmir, Mersin, Samsun, Trabzon
2021-03-24
Active, closed
Hoffmann-La Roche
Phase 3
769
Ankara, Center, Çankaya, Istanbul, Kayseri, Kocaeli, Lzmir, Mersin
2020-12-03
Active, closed
Hoffmann-La Roche
Phase 2
303
Ankara, Antalya, Diyarbakır, Istanbul, Izmir, Samsun
2020-11-27
Active, closed
Hoffmann-La Roche
Phase 3
985
Ankara, Çankaya, Istanbul, Kocaeli, Mersin, Samsun, Trabzon, Van
2020-10-26
Active, closed
Hoffmann-La Roche
Phase 3
992
Ankara, Edirne, Istanbul, Izmir, İzmit, Malatya, Samsun
2020-10-09
Active, closed
Hoffmann-La Roche
Phase 3
190
Ankara, Gaziantep, Istanbul, Izmir, Samsun
2020-09-30
Active, closed
Hoffmann-La Roche
Phase 2/3
325
Adana, Ankara, Bornova, ?zm?r, Istanbul
2020-01-29
Recruiting
Hoffmann-La Roche
Phase 3
1,000
Ankara, Istanbul, Kocaeli
2018-09-20
Active, closed
Hoffmann-La Roche
Phase 3
257
Adana, Ankara, Istanbul, Izmir, Malatya, Samsun
2018-08-16
Active, closed
Hoffmann-La Roche
Phase 2/3
1,000
Adana, Antalya, Edirne, Istanbul, Kar??yaka, Sihhiye/Ankara
2017-09-22
Active, closed
Hoffmann-La Roche
Phase 3
382
Edirne, Istanbul, S?hhiye, Ankara
2017-09-20
Rows per page Showing 1–34 of 34
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Cite this view

Priya Life Science (2026). Clinical trial register: studies with a Turkish investigative site, filtered. Derived from ClinicalTrials.gov. Retrieved 11 October 2026. https://priyalifescience.com/clinical-trials-turkey/city/istanbul

Query this register directly
GET /api/trials?country=in&status=recruiting&format=json Try it now →

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 Turkey and is recruiting, not yet recruiting, active but no longer recruiting, or enrolling by invitation: 5,418 studies in total at the last sync on 11 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 34 of those studies with a site in Istanbul that also match the filters currently applied.

How many clinical trials are recruiting in Istanbul?

9 of the 34 studies on this page are recruiting new participants as of the 11 Oct 2026, 03:18 UTC sync. A further 0 have not yet opened recruitment, 25 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 (Istanbul), 34 studies
PhaseStudiesRecruitingShare
Phase 324570.6%
Phase 24211.8%
Phase 2/3318.8%
Not applicable112.9%
Observational102.9%
Phase 4102.9%

Most active sponsors

Lead sponsors with the most studies (Istanbul)
Lead sponsorStudiesRecruiting
Hoffmann-La Roche349
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.