Regenerative Medicine Utrecht

Clinical trials

We’re involved in a number of pre-clinical and clinical studies. For up-to-date information please visit the UMC Utrecht website.




One example is the IMPACT-trial.
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.

A treatment that is less stressful for the patient. That is the aim of the IMPACT study in our mobility clinic. Before, two surgeries were required for cartilage problems in the knee: one to take cells for culture in the lab, and a second to replace the cells in the knee. Thanks to a multidisciplinary collaboration of doctors, researchers, physiotherapists and a orthopedic surgeon, this can be done in one single surgery.

Watch the video (Dutch) below to see how our team at UMC Utrecht helped Kevin get back on track.