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

Clinical Trials in California

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 โ€” 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 โ€” 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
Florida 7 Arizona 6 California 6 Colorado 5 Michigan 4
Narrow the registerReset
Recruitment status
Phase
Lead sponsor
Relay Therapeutics, Inc.2 RayzeBio, Inc.1 Olema Pharmaceuticals, Inc.1 Processa Pharmaceuticals1 Atossa Therapeutics, Inc.1
State
Florida7 Arizona6 California6 Colorado5 Michigan4
All 27 states
Target enrolment
to
6 of 9094 studies
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Status
Study
Lead sponsor
Phase
Enrol
US states
Start
Recruiting
Phase 3 Study of RLY-2608 + Fulvestrant vs Capivasertib + Fulvestrant as Treatment for Locally Advanced or Metastatic PIK3CA-mutant HR+/HER2- Breast Cancer
NCT06982521PIK3CA Mutation, HER2- Negative Breast Cancer, Hormone Receptor Positive Tumor, Breast Cancer
Relay Therapeutics, Inc.
Phase 3
540
Arizona, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia
2025-08-26
Recruiting
A Phase 2 Study of PCS6422 With Capecitabine in Patients With Advanced or Metastatic Breast Cancer
NCT06568692Breast Cancer, TNBC - Triple-Negative Breast Cancer, HER2-negative Breast Cancer
Processa Pharmaceuticals
Phase 2
90
Arizona, California, Florida, Indiana, Maryland, New Jersey, New York, Ohio
2024-10-02
Active, closed
Trial of 225Ac-DOTATATE (RYZ101) in Subjects With ER+, HER2-negative Unresectable or Metastatic Breast Cancer Expressing SSTRs.
NCT06590857Metastatic Breast Cancer, HER2-negative Breast Cancer, ER+ Breast Cancer, Advanced Breast Cancer
RayzeBio, Inc.
Phase 1/2
16
Arizona, California, Colorado, Florida, Georgia, Indiana, Massachusetts, Michigan
2024-07-19
Active, closed
(Z)-Endoxifen for the Treatment of Premenopausal Women With ER+/HER2- Breast Cancer
NCT05607004Breast Neoplasms, Invasive Breast Cancer, Estrogen-receptor-positive Breast Cancer, HER2-negative Breast Cancer
Atossa Therapeutics, Inc.
Phase 2
87
Arizona, California, Florida, Illinois, Kentucky, Michigan, Minnesota, Missouri
2023-02-14
Active, closed
Phase 1b Study of OP-1250 (Palazestrant) in Combination With Ribociclib, Alpelisib, Everolimus, or Atirmociclib in ER+, HER2- Breast Cancer
NCT05508906Metastatic Breast Cancer, ER-positive Breast Cancer, HER2-negative Breast Cancer, Breast Cancer
Olema Pharmaceuticals, Inc.
Phase 1
190
Arizona, California, Colorado, Florida, Iowa, Massachusetts, Michigan, Minnesota
2022-08-31
Recruiting
First-in-Human Study of Mutant-selective PI3Kฮฑ Inhibitor, RLY-2608, as a Single Agent in Patients With Advanced Solid Tumors and in Combination With Endocrine Therapy +/- a CDK4/6 or CDK4 Inhibitor in Patients With Advanced Solid Tumors or Advanced Breast Cancer
NCT05216432PIK3CA Mutation, Solid Tumor, Adult, HER2-negative Breast Cancer, Breast Cancer
Relay Therapeutics, Inc.
Phase 1
930
Arizona, California, Colorado, Connecticut, Florida, Illinois, Indiana, Massachusetts
2021-12-08
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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 17 September 2026. https://priyalifescience.com/clinical-trials-usa/state/california

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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.