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Recruiting Phase 2 NCT06451120

NCT06451120 Platelet Rich Plasma Injections In Young And Old Human Subjects

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Clinical Trial Summary
NCT ID NCT06451120
Status Recruiting
Phase Phase 2
Sponsor University of California, San Francisco
Condition Osteoarthritis
Study Type INTERVENTIONAL
Enrollment 60 participants
Start Date 2024-06-01
Primary Completion 2027-02-16

Eligibility & Interventions

Sex All sexes
Min Age 18 Years
Max Age 70 Years
Study Type INTERVENTIONAL
Interventions
Platelet-Rich Plasma (PRP) InjectionsCentrifugeControl saline injection

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.

In Phase 2, researchers evaluate early signs of effectiveness. You may be randomized to receive the active treatment or a comparator. Monitoring continues closely.

This trial targets 60 participants in total. It began in 2024-06-01 with a primary completion date of 2027-02-16.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

This is a randomized, double-blind, placebo-controlled phase 2 study with a secondary crossover phase at the end of the initial trial to ensure all subjects receive one PRP injection. The goal is to identify what proteins change in the blood following repeated intraarticular knee PRP injections in patients with knee osteoarthritis. The objective is to determine the protein changes resulting from a single autologous PRP injection (5 mL) in comparison to a normal saline control. About 60 subjects will take part in this study by two age groups at UCSF into the following arms: Arm A: PRP injection; Arm B: normal saline injection control. The study aims to demonstrate what benefits PRP has on knee osteoarthritis and methods to best achieve biologic effects. Subjects with a diagnosis of knee osteoarthritis ages 18-45 and 46-70 years old presenting to a University Based sports medicine clinic will be screened for potential eligibility. Subjects who meet all qualifying requirements will be recruited from UCSF's orthopedic and primary care clinics. Subjects will be on study for up to 26 weeks Screening: up to 14 days Treatment: injection of PRP or normal saline; subjects can cross over at week 12 to a PRP if originally in the control injection group Follow-up: 2 weeks post-baseline injection, 12 weeks postbaseline, (14 weeks if crossover patient), 26 weeks.

Eligibility Criteria

Inclusion Criteria 1. Grade 1-3 KL score will be recruited; 2. Symptoms of knee osteoarthritis for at least 3 months before presentation in one knee; 3. Have symptomatic complaints from osteoarthritis pain in no other joint affecting the hips, ankles or unaffected knee; 4. Will be able to attend and perform physical therapy. 5. English-speaking Exclusion Criteria 1\. Patients will be excluded if: 1. Received injection therapy for knee osteoarthritis in the past 6 months 2. Have signs of concomitant osteoarthritis of 1 or more other major joints of the lower extremities that impair their daily activity level 3. History of septic arthritis 4. Have underwent a previous knee surgery specifically for osteoarthritis or osteochondral defects less than 1 year before randomization (i.e. autograft or allograft surgery 5. High tibial osteotomy, partial knee replacement, patellar resurfacing), total knee replacement or existing surgical hardware in the knee 6. Patient with platelet disorders, bleeding disorder 7. Patient with rheumatologic disease, automimmune disorder, immunocompromised status, active history of cancer 8. Patient taking Chemotherapy, need for regular prednisone or antiinflammatory used 9. Pregnant, breastfeeding, or unwilling to practice birth control during participation in the study. 10. Uncontrolled illness, physical disability, or other contraindication to aerobic exercise training including, but not limited to: i. Acute myocardial Infarction (within 5 days of any planned study procedure); ii. Unstable angina; iii. Uncontrolled arrhythmia causing symptoms or hemodynamic compromise; iv. Recurrent syncope; v. Active endocarditis; vi. Acute myocarditis or pericarditis; vii. Symptomatic severe aortic stenosis; viii. Uncontrolled heart failure; ix. Acute (within 3 months) pulmonary embolus or pulmonary infarction; x. Thrombosis of lower extremities; xi. Suspected dissecting aneurysm; xii. Uncontrolled asthma; xiii. Pulmonary edema; xiv. Room air desaturation at rest ≤85%; xv. Respiratory failure; xvi. Acute non-cardiopulmonary disorders that may affect exercise performance or be aggravated by exercise (ie infection, renal failure, thyrotoxicosis); and xvii. Mental impairment leading to inability to cooperate.

Contact & Investigator

Central Contact

Anthony Luke, MD, MPH

✉ anthony.luke@ucsf.edu

📞 415.502.4548

Principal Investigator

Anthony Luke, MD, MPH

PRINCIPAL INVESTIGATOR

University of California, San Francisco

Frequently Asked Questions

Who can join the NCT06451120 clinical trial?

This trial is open to participants of all sexes, aged 18 Years or older, up to 70 Years, studying Osteoarthritis. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

What phase is the NCT06451120 trial and what does that mean for participants?

Phase 2 trials evaluate whether the treatment shows signs of effectiveness while continuing to monitor safety. More participants are enrolled than in Phase 1 to help refine the treatment protocol.

Is NCT06451120 currently recruiting?

Yes, NCT06451120 is actively recruiting participants. Contact the research team at anthony.luke@ucsf.edu for enrollment information.

Where is the NCT06451120 trial being conducted?

This trial is being conducted at San Francisco, United States.

Who is sponsoring the NCT06451120 clinical trial?

NCT06451120 is sponsored by University of California, San Francisco. The principal investigator is Anthony Luke, MD, MPH at University of California, San Francisco. The trial plans to enroll 60 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: July 2026  ·  Data Methodology