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Clinical Trials/NCT07491367
NCT07491367
Not yet recruiting
Phase 4

Pilot Exploration of Platelet Characterization of Platelet Rich Plasma Created by Two Different Systems

University of California, San Francisco1 site in 1 country20 target enrollmentStarted: March 1, 2026Last updated:

Overview

Phase
Phase 4
Status
Not yet recruiting
Enrollment
20
Locations
1
Primary Endpoint
Cellular composition and quantity using Horiba Cell counter

Overview

Brief Summary

The investigators would like to study the differences in the quality of Platelet Rich Plasma (PRP) between two different machines in those with knee osteoarthritis. Knee osteoarthritis means your cartilage has been worn down, and it affects your knee joint. Both machines, the APEX Biologix XCELL PRP System and the Emcyte PurePRP Supraphysiologic Concentrating System, are FDA approved, commercially available, and makes PRP. The investigators will check if the platelets in the PRP have different amounts or work differently. The investigators will also assess participants symptoms after the injection and compare the two different preparation systems.

Study Design

Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel
Primary Purpose
Basic Science
Masking
None

Eligibility Criteria

Ages
18 Years to — (Adult, Older Adult)
Sex
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Kellgren-Lawrence (KL) Grade 1-3 knee osteoarthritis
  • Symptoms of knee osteoarthritis for at least 3 months before presentation in one knee
  • Will be able to attend and perform physical therapy

Exclusion Criteria

  • Received injection therapy for knee osteoarthritis in the past 6 months
  • Have severe arthritis diagnosed in ≥1 major joint by radiology criteria
  • History of septic arthritis
  • Underwent knee surgery for osteoarthritis or osteochondral defects within 1 year before randomization (e.g., autograft or allograft surgery)
  • Have had high tibial osteotomy, partial knee replacement, patellar resurfacing, total knee replacement, or have existing surgical hardware in the knee
  • Received a platelet-rich plasma injection elsewhere in the body within the past 3 months
  • Have a platelet disorder or bleeding disorder
  • Have a rheumatologic disease, autoimmune disorder, immunocompromised status, or active history of cancer
  • Are taking chemotherapy, require regular prednisone, or require regular anti-inflammatory use
  • Are pregnant, breastfeeding, or unwilling to practice birth control during the study

Outcomes

Primary Outcomes

Cellular composition and quantity using Horiba Cell counter

Time Frame: Day 1

Compare cellular composition and quantifying PRP products between EmCyte PurePRP versus APEX Biologix XCELL PRP manufacturing systems using a Horiba Cell counter.

Secondary Outcomes

  • Platelet Activation(Day 1)
  • Patient Reported Outcomes: Western Ontario and McMaster Universities Arthritis Index (WOMAC)(Enrollment to 6 months.)
  • Patient Reported Outcome: Short Form-12 Health Survey(Enrollment to 6 months)
  • Activity Monitor & PRP Characteristics(Enrollment to 6 months)
  • Patient Reported Outcomes: Visual Analog Scale(Enrollment to 6 months)

Investigators

Sponsor Class
Other
Responsible Party
Sponsor

Study Sites (1)

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