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

Clinical Trials in California, 2026

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.

Download CSV
Source: ClinicalTrials.gov. Complete coverage of the industry-sponsored slice — all 9132 matching records are in this view (non-industry sponsors are out of scope by design, not truncated). Synced 10 Oct 2026, 03:16 UTC
9132
Studies in scope
industry-sponsored, all four open statuses
4964
Recruiting now
open to new participants
2194
Lead sponsors
across recruiting studies
Top states
California 29 Florida 26 Georgia 21 Arizona 20 Colorado 18
Narrow the registerReset
Recruitment status
Phase
Lead sponsor
AbbVie8 Takeda7 Eli Lilly and Company4 Janssen Research & Development, LLC3 Sanofi2
State
California29 Florida26 Georgia21 Arizona20 Colorado18
All 32 states
Target enrolment
to

Trials with a site in California

29 of 9132 studies
Download
Status
Study
Lead sponsor
Phase
Enrol
US states
Start
Recruiting
AbbVie
Phase 2
2,000
Alabama, Arizona, California, Colorado, Florida, Georgia, Idaho, Illinois
2026-07-31
Recruiting
Takeda
Phase 3
70
Arizona, California, Illinois, Michigan, New Jersey, New York, Ohio, Oklahoma
2025-10-27
Recruiting
Sanofi
Phase 3
980
Arizona, Arkansas, California, Colorado, Connecticut, Florida, Georgia, Idaho
2025-10-01
Recruiting
Eli Lilly and Company
Phase 3
290
Alabama, California, Florida, Idaho, Illinois, Indiana, Kentucky, Louisiana
2025-06-26
Recruiting
Sanofi
Phase 2
99
Arizona, California, Florida, Georgia, Iowa, Kansas, Massachusetts, Michigan
2025-06-03
Recruiting
Takeda
Phase 4
200
Alabama, Arizona, Arkansas, California, Colorado, Florida, Georgia, Illinois
2025-03-27
Recruiting
Takeda
Phase 3
70
Arizona, California, Illinois, Michigan, New Jersey, New York, Ohio, Oklahoma
2025-01-22
Recruiting
Takeda
Phase 3
396
California, Colorado, Florida, Indiana, Kentucky, New York, South Carolina, South Dakota
2025-01-02
Recruiting
AbbVie
Phase 2
590
Alabama, California, Colorado, Connecticut, Florida, Georgia, Idaho, Illinois
2024-09-04
Recruiting
AbbVie
Phase 3
110
California, Colorado, Connecticut, Illinois, Indiana, Massachusetts, Minnesota, New York
2024-08-08
Recruiting
Morphic Therapeutic, Inc. (A Wholly Owned Subsidiary of Eli Lilly and Company)
Phase 2
385
California, Colorado, Florida, Georgia, Louisiana, Missouri, Nevada, North Carolina
2024-07-18
Recruiting
Merck Sharp & Dohme LLC
Phase 3
1,200
Alabama, Arizona, Arkansas, California, Colorado, Connecticut, District of Columbia, Florida
2024-06-05
Recruiting
Takeda
Phase 4
50
Alabama, Arizona, California, Connecticut, Florida, Georgia, Illinois, Kansas
2024-04-18
Active, closed
Janssen-Cilag Ltd.
Phase 3
120
California, Illinois, Missouri, South Carolina
2024-04-17
Recruiting
Janssen Research & Development, LLC
Phase 3
120
California, Connecticut, Georgia, Indiana, Massachusetts, New Jersey, New York, Ohio
2024-03-13
Recruiting
Eli Lilly and Company
Phase 3
90
California, Connecticut, Georgia, Indiana, Massachusetts, New Jersey, New York, Ohio
2024-03-13
Recruiting
Takeda
Phase 2
268
California, Florida, Georgia, Iowa, Kansas, Kentucky, Maryland, Missouri
2024-03-05
Recruiting
AbbVie
Phase 3
110
Arizona, Arkansas, California, Colorado, Florida, Indiana, Massachusetts, Minnesota
2023-12-11
Active, closed
AbbVie
Phase 3
289
Arizona, California, Connecticut, Florida, Georgia, Idaho, Illinois, Indiana
2023-11-15
Recruiting
Takeda
Phase 3
240
Alabama, Arizona, California, Florida, Georgia, Illinois, Indiana, Maryland
2023-05-16
Active, closed
Janssen Research & Development, LLC
Phase 2
703
Alabama, Arizona, Arkansas, California, Colorado, Connecticut, District of Columbia, Florida
2022-07-22
Recruiting
A Master Protocol (AMAZ): A Study of Mirikizumab (LY3074828) in Pediatric Participants With Ulcerative Colitis or Crohn's Disease (SHINE-ON)
NCT04844606Ulcerative Colitis, Ulcerative Colitis Chronic, Inflammatory Bowel Diseases, Crohn's Disease
DrugMirikizumab
Eli Lilly and Company
Phase 3
150
California, Connecticut, Georgia, Massachusetts, Missouri, New York, Pennsylvania, Texas
2021-05-26
Active, closed
Eli Lilly and Company
Phase 3
996
Alabama, Arizona, California, Connecticut, Florida, Georgia, Idaho, Indiana
2020-06-22
Active, closed
Janssen Research & Development, LLC
Phase 2/3
1,409
Alabama, Arizona, California, Colorado, Florida, Georgia, Illinois, Indiana
2018-04-13
Active, closed
AbbVie
Phase 3
1,336
Arizona, Arkansas, California, Colorado, Connecticut, Florida, Georgia, Illinois
2018-04-09
Active, closed
AbbVie
Phase 3
747
Alabama, Arizona, California, Colorado, Connecticut, Florida, Georgia, Idaho
2018-03-21
Active, closed
A 5-year Longitudinal Observational Study of Patients Undergoing Therapy for Inflammatory Bowel Disease
NCT03251118Inflammatory Bowel Diseases, Crohn's Disease, Ulcerative Colitis, Indeterminate Colitis
Target PharmaSolutions, Inc.
Observational
15,000
California, Colorado, Florida, Georgia, Illinois, Indiana, Iowa, Louisiana
2017-07-24
Active, closed
AbbVie
Observational
1,446
Alabama, Arizona, California, Colorado, Connecticut, Florida, Georgia, Louisiana
2014-08-28
Active, closed
A Multicenter, Prospective, Long-term, Observational Registry of Pediatric Patients With Inflammatory Bowel Disease
NCT00606346Crohn's Disease, Ulcerative Colitis, Indeterminate Colitis, Inflammatory Bowel Diseases
Janssen Biotech, Inc.
Observational
4,970
Alabama, Arizona, California, Colorado, Connecticut, Florida, Georgia, Idaho
2007-05-31
Rows per page Showing 1–29 of 29
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Cite this view

Priya Life Science (2026). Clinical trial register: industry-sponsored studies with a US investigative site, filtered. Derived from ClinicalTrials.gov. Retrieved 10 October 2026. https://priyalifescience.com/clinical-trials-usa/state/california

Query this register directly
GET /api/trials?country=usa&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 industry-sponsored study on the registry that lists at least one investigative site in the US and is recruiting, not yet recruiting, active but no longer recruiting, or enrolling by invitation: 9,132 studies in total at the last sync on 10 Oct 2026, 03:16 UTC. Academic and other non-industry sponsors are out of scope by design. The full list can be downloaded as CSV or queried as JSON through the register API.

This page shows the 29 of those studies with a site in California that also match the filters currently applied.

How many clinical trials are recruiting in California?

19 of the 29 studies on this page are recruiting new participants as of the 10 Oct 2026, 03:16 UTC sync. A further 0 have not yet opened recruitment, 10 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 (California), 29 studies
PhaseStudiesRecruitingShare
Phase 3171258.6%
Phase 26520.7%
Observational3010.3%
Phase 4226.9%
Phase 2/3103.4%

Most active sponsors

Lead sponsors with the most studies (California)
Lead sponsorStudiesRecruiting
AbbVie84
Takeda77
Eli Lilly and Company43
Janssen Research & Development, LLC31
Sanofi22
Janssen Biotech, Inc.10
Janssen-Cilag Ltd.10
Merck Sharp & Dohme LLC11
Morphic Therapeutic, Inc. (A Wholly Owned Subsidiary of Eli Lilly and Company)11
Target PharmaSolutions, Inc.10
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.