Paid Clinical Trials in Fountain Valley, CA

As of September 2026, 94 paid clinical trials are recruiting in Fountain Valley, California. Compensation typically covers time, travel, and study visits, with stipends ranging from modest amounts for short outpatient studies to several thousand dollars for long or inpatient protocols.

Both patients with specific conditions and healthy volunteers can qualify. Most trials offer free study-related medical care alongside compensation.

Recruiting trial data synced daily from ClinicalTrials.gov. Last sync: September 24, 2026.

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89 clinical trials

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A Global Study of Volrustomig (MEDI5752) for Participants With Unresected Locally Advanced Head and Neck Squamous Cell Carcinoma Following Definitive Concurrent Chemoradiotherapy

for Locally Advanced Head and Neck Squamous Cell Carcinoma

Sites in Fountain Valley, Whittier +43 more locations

Sponsor: AstraZeneca

Sex: All·Age: 18 - 130

Code: NCT06129864·Phase 3·Recruiting·Listed Nov 2023

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Saruparib (AZD5305) Plus Camizestrant or Plus Endocrine Therapy, Compared With CDK4/6 Inhibitor Plus Endocrine Therapy or Plus Camizestrant in HR-Positive, HER2-Negative (IHC 0, 1+, 2+/ ISH Non-amplified), BRCA1, BRCA2, or PALB2m Advanced Breast Cancer

for Advanced Breast Cancer

Drug: Camizestrant

Sites in Fountain Valley, Newport Beach +38 more locations

Sponsor: AstraZeneca

Sex: All·Age: 18+

Code: NCT06380751·Phase 3·Recruiting·Listed Apr 2024

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A Phase III Study of AZD0780 on Major Adverse CV Events in Patients With a History of ASCVD Events or at High Risk for a First Event

for Cardiovascular Disease

Sites in Fountain Valley, Garden Grove +308 more locations

Sponsor: AstraZeneca

Sex: All·Age: 18+

Code: NCT07000357·Phase 3·Recruiting·Listed Jun 2025

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Platform Study to Evaluate the Efficacy and Safety of Investigational Compound(s) in Patients With Moderate to Severe Atopic Dermatitis

for Atopic Dermatitis

Sites in Fountain Valley, Santa Ana +22 more locations

Sponsor: Novartis Pharmaceuticals

Sex: All·Age: 18 - 100

Code: NCT06947993·Phase 2·Recruiting·Listed Apr 2025

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A Phase III Study of Dato-DXd With or Without Durvalumab Compared With Investigator's Choice of Chemotherapy in Combination With Pembrolizumab in Patients With PD-L1 Positive Locally Recurrent Inoperable or Metastatic Triple-negative Breast Cancer (TROPION-Breast05)

for Breast Cancer

Drug: Durvalumab

Sites in Fountain Valley, Glendale +34 more locations

Sponsor: AstraZeneca

Sex: All·Age: 18+

Code: NCT06103864·Phase 3·Recruiting·Listed Oct 2023

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A Study to Evaluate the Safety,Tolerability, Pharmacokinetics and Clinical Activity of Mocertatug Rezetecan for Injection in Participants With Advanced Solid Tumors (BEHOLD-1)

for Solid Tumors

Sites in Fountain Valley, Santa Rosa +15 more locations

Sponsor: GlaxoSmithKline

Sex: All·Age: 18+

Code: NCT06431594·Phase 1·Recruiting·Listed May 2024

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A Study to Investigate the Efficacy and Safety of Dato-DXd With or Without Osimertinib Compared With Platinum Based Doublet Chemotherapy in Participants With EGFR-Mutated Locally Advanced or Metastatic Non-Small Cell Lung Cancer

for Metastatic Non-small Cell Lung Cancer

Drug: Osimertinib

Sites in Fountain Valley, La Jolla +25 more locations

Sponsor: AstraZeneca

Sex: All·Age: 18 - 130

Code: NCT06417814·Phase 3·Recruiting·Listed May 2024

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