IMPACT: Safety and Feasibility of a Single-stage Procedure for Focal Cartilage Lesions of the Knee. (IMPACT)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT02037204
Recruitment Status : Unknown
Verified July 2014 by D.B.F. Saris, UMC Utrecht.
Recruitment status was:  Active, not recruiting
First Posted : January 15, 2014
Last Update Posted : July 18, 2014
Information provided by (Responsible Party):
D.B.F. Saris, UMC Utrecht

January 13, 2014
January 15, 2014
July 18, 2014
March 2013
July 2014   (Final data collection date for primary outcome measure)
Safety [ Time Frame: Multiple time points up to 18 months ]
Adverse event rate non-inferior to standard treatment (autologous chondrocyte implantation) and leads to no serious adverse events such as a immunological response.
Same as current
Complete list of historical versions of study NCT02037204 on Archive Site
Clinical improvement [ Time Frame: 18 months ]
Clinical improvement as measured by patient reported outcome scores.
Same as current
  • Structural repair [ Time Frame: 12 months ]
    To examine parameters of structural repair at one year after treatment using MRI and a second-look arthroscopy.
  • Health care use and costs [ Time Frame: 18 months ]
    To assess the healthcare use and costs related to the procedure as well as the health-related work leave during the study period.
Same as current
IMPACT: Safety and Feasibility of a Single-stage Procedure for Focal Cartilage Lesions of the Knee.
Instant MSC Product Accompanying Autologous Chondron Transplantation (IMPACT): Safety and Feasibility of a Single-stage Procedure for Focal Cartilage Lesions of the Knee.
Articular cartilage defects in the knee have a poor intrinsic healing capacity and may lead to functional disability and osteoarthritis. Cartilage cell therapy using autologous chondrocyte implantation (ACI) has been established as the first advanced treatment therapy medicinal product. Although this technique has achieved good mid-term results, it is a costly and extensive two-stage procedure which is limited by the number of chondrocytes obtained by biopsy and the dedifferentiation resulting from the expansion phase. Therefore, there is a need for improvement. A new cartilage repair technique should aim at decreasing surgical trauma, lowering complexity, improving logistics and cost-effectiveness while retaining or improving clinical outcome. Direct contact between mesenchymal stromal cells (MSCs) and dedifferentiated articular chondrocytes in vitro showed improvement of the chondrogenic phenotype of dedifferentiated articular chondrocytes. In addition, preserving the pericellular matrix of chondrocytes improves cartilage formation. These chondrons (chondrocytes with their pericellular matrix) have shown improved cartilage formation when combined with allogeneic MSCs in extensive preclinical studies. The cells are mixed with fibrin cell carrier and applied to the cartilage lesion within one surgical procedure. This will reduce patient morbidity and improve patient care through immediate transplantation of a potent cell-based cartilage product. This is a phase I/II prospective monocenter study to evaluate the safety and feasibility of the IMPACT for treatment of focal articular cartilage lesions of the knee.
Not Provided
Phase 1
Phase 2
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
  • Foreign-Body Reaction
  • Inflammation
  • Effusion (L) Knee
  • Knee Pain Swelling
Other: Cartilage repair surgery
Single-stage surgery, After debridement, the cartilage defect is filled with the fibrin glue carrier containing autologous chondrons and allogeneic MSCs
Other Names:
  • Single-stage
  • Cartilage repair
Experimental: Cartilage repair surgery
Single-stage cartilage repair surgery using autologous chondrons and allogeneic MSCs in a fibrin glue carrier.
Intervention: Other: Cartilage repair surgery

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Unknown status
Same as current
August 2015
July 2014   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • Age >18 and <45 years old
  • Symptomatic isolated full-thickness articular cartilage lesion on the femoral condyle or trochlea.
  • Size 2 - 8 cm2
  • Intact anterior cruciate ligament

Exclusion Criteria:

  • (History of) osteoarthritis, defined as Kellgren-Lawrence grade >3 as determined from appropriate X-ray.
  • Concomitant inflammatory disease that affects the joint (rheumatoid arthritis, metabolic bone disease, psoriasis, gout, symptomatic chondrocalcinosis)
  • (History of) Septic arthritis.
  • Malalignment requiring an osteotomy.
  • (History of) total menisectomy in the target knee joint.
  • Any surgery in the knee joint 6 months prior to study inclusion.
  • Risk groups for MRI scanning due to the magnetic field like patients with pacemakers, nerve stimulators, metal particles, stents, clips or implants, (possible) pregnancy or breast feeding.
  • Patients with severe anxiety for MRI scans and/or needles
Sexes Eligible for Study: All
18 Years to 45 Years   (Adult)
Contact information is only displayed when the study is recruiting subjects
Not Provided
Not Provided
D.B.F. Saris, UMC Utrecht
UMC Utrecht
Not Provided
Study Director: Tommy S. de Windt, MD UMC Utrecht
Principal Investigator: Daniel B.F. Saris, MD, PhD UMC Utrecht
UMC Utrecht
July 2014

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP