As of September 2026, 104 paid clinical trials are recruiting in Pasadena, 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.
Pasadena offers studies at sites including Huntington Memorial Hospital for conditions such as Anatomic Stage II Breast Cancer AJCC v8, Breast Cancer, Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8. 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: .
Posted to ClinicalTrials.gov within the last 60 days — these studies are just starting to recruit.
Researchers run research studies in Pasadena, CA at 25 active sites. The clinics below currently host the largest number of recruiting studies — each name is followed by the conditions they focus on most.
| Site | Specializes in | Active trials |
|---|---|---|
| Huntington Memorial Hospital | Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage IIIA Breast Cancer AJCC v8 | 10 |
| Keck Medical Center of USC Pasadena | Advanced Hepatocellular Carcinoma, Breast Cancer, Carcinoma, Hepatocellular | 6 |
| California Liver Research Institute | Liver Fibrosis, Metabolic Dysfunction Associated Steatohepatitis (MASH), Metabolic Dysfunction-Associated SteatoHepatitis (MASH) | 4 |
| GSK Investigational Site | Irritable Bowel Syndrome, Liver Diseases, Alcoholic, Metabolic Dysfunction-Associated Steatohepatitis | 4 |
| Profound Research LLC at Southern California Heart Specialists | Atrial Fibrillation (AF), Moderate Aortic Valve Stenosis, Transthyretin Amyloid Cardiomyopathy (ATTR CM) | 4 |
| Pasadena Clinical Trials | Diabetic Peripheral Neuropathic Pain, Migraine, Plaque Psoriasis | 4 |
| Kaiser Permanente Southern California | Human Papillomavirus, Mild Cognitive Impairment (MCI), Seriously Ill Hospitalized Patients | 3 |
| 89bio Clinical Study Site | Metabolic Dysfunction-Associated Steatohepatitis (MASH) / Nonalcoholic Steatohepatitis (NASH) With Compensated Cirrhosis, Metabolic Dysfunction-Associated Steatotic Liver Disease (MASH) / Nonalcoholic Steatohepatitis (NASH) With Fibrosis | 2 |
| Akero Clinical Study Site | MASH - Metabolic Dysfunction-Associated Steatohepatitis, MASH With Fibrosis, NASH - Nonalcoholic Steatohepatitis | 2 |
| California Eye Specialists Medical Group, Inc | Diabetic Retinopathy, DR, Neovascular Age-related Macular Degeneration, nAMD | 2 |
| California Eye Specialists Medical Group, Inc. | Macular Edema Secondary to Inflammation | 2 |
| California Institute of Technology | Celiac Disease, Quadriplegia | 2 |
| Local Institution - 2613 | Agitation, Alzheimer Disease, Alzheimer's Disease | 2 |
| Profound Research LLC | Focal Epilepsy, Symptomatic Heart Failure With Preserved Ejection Fraction (HFpEF) | 2 |
| Southern California Heart Specialists | Atrial Fibrillation (AF), Urothelial Carcinoma | 2 |
| UCLA Health Primary Care in Pasadena | Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage I Breast Cancer AJCC v8 | 2 |
| UCLA Hematology/Oncology - Pasadena | Advanced/Metastatic Urothelial Cancer, Cancer of the Prostate, Hormone Sensitive Prostate Cancer | 2 |
| California Eye Specialists Medical Group | Vision Disorders, Vision Loss Night, Diabetic Retinopathy | 2 |
| Ambros Clinical Trial Site | Complex Regional Pain Syndrome Type I | 1 |
| Aurinia Investigational Site | Myasthenia Gravis, Generalized | 1 |
| Azul Vision - California Eye Specialists Medical Group Inc. | Neurotrophic Keratitis | 1 |
| Azul Vision / California Eye Specialists Medical Group, Inc. | Age-Related Macular Degeneration, Choroidal Neovascularization, Macular Degeneration | 1 |
| CS Cancer at Huntington Cancer Center | Axilla; Breast, Axillary Nodal Disease, Breast Cancer | 1 |
| California Eye Medical Specialists | Geographic Atrophy, Macular Degeneration | 1 |
| California Eye Specialists Medical Group Inc. | Age-related Macular Degeneration (AMD), Geographic Atrophy (GA) | 1 |
Recruiting trials in Pasadena grouped by therapeutic area, drawn from ClinicalTrials.gov. Each bucket shows the most recent example studies.
There are approximately 104 recruiting clinical trials in Pasadena, California listed on ClinicalTrials.gov. The number changes weekly as new studies open and others close enrollment.
Most recruiting trials in Pasadena compensate participants for their time, travel, and study visits. Compensation varies by sponsor, study phase, and visit requirements — the exact amount is disclosed by the study team during the informed consent process.
Eligibility depends on the specific study. Each trial defines its own inclusion criteria (age, diagnosis, medical history, prior treatments) and exclusion criteria. Both patients with specific conditions and healthy volunteers can qualify, depending on the study design.
The most common conditions under active study in Pasadena include Anatomic Stage II Breast Cancer AJCC v8 (6), Breast Cancer (4), Anatomic Stage I Breast Cancer AJCC v8 (3), Anatomic Stage III Breast Cancer AJCC v8 (3), among many others. Browse the list above to explore every recruiting trial.
Yes. Healthy-volunteer studies — often early-phase pharmacology or vaccine trials — recruit in Pasadena on an ongoing basis. Use the "Healthy volunteers only" filter above to view trials that accept participants without the study's target condition.
Click any study title above to see the full study record, including eligibility criteria, visit schedule, and the study team's contact information. Reach out to the central contact or recruiting site directly — they will guide you through screening and informed consent.
Recruiting research sites in Pasadena include Huntington Memorial Hospital, Keck Medical Center of USC Pasadena, California Liver Research Institute, among others. Each site lists its open studies and contact information on the study record above — call or email the site coordinator to ask about screening for a specific protocol.
The largest active categories in Pasadena are Cancer & tumors (26), Cardiovascular (11), Eye & vision (9). Use the filters above to narrow by therapeutic area, phase, age, or healthy-volunteer eligibility.