Meet the Experts

Chris Zealey

Principal, Science and Strategy

Optimizing Clinical Endpoints for Phase III Design

Insight Gathering for Clinically Meaningful Change  

Introduction 

Our pharmaceutical client has completed a Phase 2 trial for a rare genetic disorder. Based on this study, the FDA recommended that our client update their primary endpoint (the Clinical Global Impression-Improvement subscale) for their planned Phase III clinical study. 

 

The Challenge

To this end, our client sought our support in modifying the Clinical Global Impression – Severity (CGI-S) and Clinical Global Impression – Improvement (CGI-I) subscales to include condition-specific anchors to provide clinicians with a scale for assessing symptom severity at baseline as well as clinically meaningful improvement of symptoms for caregivers and health care providers. ​ 

The recommendations for a revised clinical assessment scale was issued as a report, informed regulatory interactions, as well as the design of the Phase III study. 

Our Solution

  • Literature Review: First we performed a comprehensive literature review to understand the extent CGI-I has been used to record clinically meaningful change in other neurological and neurodevelopmental diseases, including the relationship between CGI-I score and clinically meaningful thresholds.
  • Next we engaged healthcare providers in qualitative one-on-one interviews as well as facilitated a live working group session. Findings from the literature review were presented to help inform discussion. 
  • The objectives of these engagements were to:
    • Define  minimally clinically meaningful change and clinically meaningful change for healthcare providers and caregivers in the context of the disorder.
    • Gather input on the CGI scale developed specifically for rare genetic disorder to ensure it is appropriate to measure treatment effect.
  • Insights from the one-on-one interviews and working group session were used to modify the CGI scale.
  • In collaboration with our client, we developed the interview guide, as well as designed, facilitated, and reported the session. Our team managed all logistics and event management throughout the project.
  • The insights gathered from the one-on-one interviews and working group session, were essential to develop a custom slide deck which was submitted to the FDA for consideration.

Value Delivered

  • Provided strategic, adaptable and collaborative partnership that was attuned to the needs of our client.
    • We excel at asking the right questions, probing assumptions, offering creative solutions and facilitating ‘big picture’ discussions.
  • Delivered a thoughtful, strategic, and customized summary of the healthcare provider engagement which supported key regulatory interactions with the FDA and informed clinical study design.
  • Fostered strong relationships by ensuring our client and their stakeholders received comprehensive support through seamless event management, while meeting all regulatory and compliance needs.

Learn more about optimizing clinical assessments for Phase 3 trials

Meet the Authors

Chris Zealey

Principal, Science and Strategy

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Herspiegel is a leading professional services firm helping biotech start-ups and the world’s largest pharmaceutical companies navigate the path from science to brand performance and change patients’ lives. We are committed to using strategic insights from medical to commercial to market access to solve critical problems.