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Related Experiment Video

Updated: Feb 4, 2026

Cortical Neurogenesis: Transitioning from Advances in the Laboratory to Cell-Based Therapies
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Cell-Based Therapies: The Nonresponder.

Arnold I Caplan1

  • 1Department of Biology, Skeletal Research Center, Case Western Reserve University, Cleveland, Ohio, USA.

Stem Cells Translational Medicine
|September 26, 2018
PubMed
Summary
This summary is machine-generated.

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Mesenchymal stem cell (MSC) therapies show high nonresponder rates due to patient variability. These nonresponders can serve as a control group, potentially replacing placebo controls in clinical trials.

Area of Science:

  • Regenerative Medicine
  • Cell-Based Therapies
  • Clinical Trial Design

Background:

  • Cell-based therapies, particularly those using mesenchymal stem cells (MSCs), are advancing with several Phase III trials underway.
  • A significant challenge in current MSC therapy trials is the substantial rate of nonresponders observed.
  • This nonresponse is attributed to the lack of disease-specific tuning of MSCs and the inherent genetic and response variability among patients.

Purpose of the Study:

  • To address the high nonresponder rates in mesenchymal stem cell (MSC) therapy clinical trials.
  • To propose an alternative to traditional placebo controls by utilizing nonresponder patients.
  • To optimize the design and interpretation of cell-based therapy trials.

Main Methods:

  • Analysis of nonresponder rates in ongoing Phase III cell-based therapy trials.

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Last Updated: Feb 4, 2026

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  • Evaluation of the biological and genetic factors contributing to patient response variability.
  • Conceptual framework for integrating nonresponder data into trial design.

    • Main Results:

    • Mesenchymal stem cells (MSCs) are not optimized for specific diseases or individual patient variability.
    • High nonresponder rates are an expected outcome in current MSC clinical trials.
    • Nonresponder patients represent a viable alternative to placebo controls.

    Conclusions:

    • The inherent variability in patients and lack of tailored MSC treatments lead to significant nonresponder rates.
    • Nonresponders in cell-based therapy trials can be leveraged as an effective control group.
    • This approach could streamline clinical trials and reduce the need for placebo controls, advancing regenerative medicine.