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Trackers› Clinical trials› Illinois
Clinical trial register · United States · industry-sponsored

Clinical Trials in Illinois

Every industry-sponsored study on the ClinicalTrials.gov registry that lists a US site and is open, about to open, active-but-closed, or enrolling by invitation. This deliberately excludes academic and other non-industry sponsors — the full US registry across all sponsors runs to over 22,000 recruiting studies alone.

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Source: ClinicalTrials.gov. Complete coverage of the industry-sponsored slice — all 9094 matching records are in this view (non-industry sponsors are out of scope by design, not truncated). Synced 17 Sep 2026, 08:23 UTC
9094
Studies in scope
industry-sponsored, all four open statuses
4935
Recruiting now
open to new participants
2188
Lead sponsors
across recruiting studies
Top states
California 14 Florida 11 Colorado 8 Illinois 7 New York 6
Narrow the registerReset
Recruitment status
Phase
Lead sponsor
United Therapeutics3 Insmed Incorporated1 Actelion1 Gossamer Bio USA, Inc.1 Medtronic Cardiac Rhythm and Heart Failure1
State
California14 Florida11 Colorado8 Illinois7 New York6
All 30 states
Target enrolment
to
7 of 9094 studies
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Status
Study
Lead sponsor
Phase
Enrol
US states
Start
Recruiting
Open-label Extension Study of Seralutinib in Adult Subjects With PAH (PROSERA-EXT)
NCT06274801Pulmonary Arterial Hypertension
Gossamer Bio USA, Inc.
Phase 3
330
California, Florida, Georgia, Illinois, Kansas, Kentucky, Michigan, Missouri
2024-09-03
Active, closed
An Extension Study of Treprostinil Palmitil Inhalation Powder (TPIP) for Pulmonary Arterial Hypertension (PAH)
NCT05649748Pulmonary Arterial Hypertension
Insmed Incorporated
Phase 2/3
91
Florida, Illinois, New York, Texas
2023-03-07
Active, closed
A Study of a Mean Pulmonary Artery Pressure-Targeted Approach With Early and Rapid Treprostinil Therapy to Reverse Right Ventricular Remodeling in Participants With Pulmonary Arterial Hypertension
NCT05203510Pulmonary Arterial Hypertension
United Therapeutics
Phase 4
52
Arizona, California, Connecticut, Florida, Georgia, Illinois, Indiana, Massachusetts
2022-10-20
Active, closed
Outcome Study Assessing a 75 Milligrams (mg) Dose of Macitentan in Patients With Pulmonary Arterial Hypertension
NCT04273945Pulmonary Arterial Hypertension
Actelion
Phase 3
935
Arizona, California, Colorado, Florida, Georgia, Illinois, Indiana, Iowa
2020-06-30
By invitation
A Study Evaluating the Long-Term Efficacy and Safety of Ralinepag in Subjects With PAH Via an Open-Label Extension
NCT03683186PAH, Pulmonary Hypertension, Pulmonary Arterial Hypertension, Hypertension
United Therapeutics
Phase 3
1,000
Arizona, California, Colorado, Florida, Georgia, Illinois, Indiana, Iowa
2019-09-23
Active, closed
ADAPT - A Patient Registry of the Real-world Use of Orenitram®
NCT03045029Pulmonary Arterial Hypertension
United Therapeutics
Observational
300
California, Colorado, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky
2017-07-18
Active, closed
DelIVery for Pulmonary Arterial Hypertension (PAH) & Continued Support Study
NCT01321073Pulmonary Arterial Hypertension
Medtronic Cardiac Rhythm and Heart Failure
Not applicable
64
Alabama, California, Florida, Illinois, Massachusetts, Minnesota, Texas, Wisconsin
2011-06
Rows per page Showing 1–7 of 7
1
Cite this view

Priya Life Science (2026). Clinical trial register: industry-sponsored studies with a US investigative site, filtered. Derived from ClinicalTrials.gov. Retrieved 17 September 2026. https://priyalifescience.com/clinical-trials-usa/state/illinois

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Listing here is informational and not medical advice; eligibility is determined by each study team. Compare pay for the teams running these studies in the US Pharma Salary Guide, see who's behind them in the US Company Directory, or track approvals on the FDA Approvals Tracker. For Irish, UK and EU sites, see the Ireland, UK and EU registers.