Bonnie Rup, PhD, Biotechnology Consultant, Bonnie Rup Consulting
The purpose of this workshop is to share experience gained in preparing and reviewing the “Integrated Summary of Immunogenicity (ISI)” for submission in regulatory filings. We will overview examples of the multi-disciplinary information that is most useful for the regulator assessing the scale of risk of undesirable immunogenicity for overall clinical benefit vs. risk. We will also examine the sponsor team's role, the general format of an ISI, and provide examples of how to anticipate and address potential issues (and how to avoid introducing any new ones!) by generating a well-thought-out and constructed integrated summary.
Background
Information relevant to the assessment of the impact of undesirable immunogenicity of therapeutic proteins on overall clinical benefit vs. risk balance is distributed across many different sections of the regulatory dossier. This has made it difficult for regulatory reviewers to locate the requisite data. Moreover, essential background information to describe the intrinsic immunogenic potential of the molecule, and how extrinsic factors (product quality, patient variables, dose regimen, etc.) might interact to influence clinical manifestations, is often missing. Although there might be valid reasons for applying a particular strategy for evaluating immunogenicity, the sponsor’s rationale is often not clearly explained. For this reason, recently issued FDA and EMA guidance has recommended submitting integrated summary documents in regulatory submissions with the objective of collating the essential information required by the regulatory assessor.
Who Should Attend?
This short course is relevant to anyone who is involved in generating and compiling the input data for immunogenicity-related sections of regulatory dossiers, including CMC, bioanalytical, non-clinical, clinical, and regulatory specialists.
Topics to be Covered Include:
Part 1 – Defining the Gap:
- Priorities for the regulator
- Common gaps in dossiers
- Examples of agency questions triggered by missing information
- The regulator’s recommendations
Part 2 – Addressing the Gap:
- Suggested structure of the Integrated Summary of Immunogenicity
- Relationship to other parts of the dossier What, where, and how?
- Examples to illustrate how to present relevant information, including: Intrinsic immunogenicity and systems biology
- Linkage to product quality control strategy
- Rationale for extent of evaluation
- Correlation of bioanalytical and clinical signals
The Role of the Sponsor Team:
- Role of the Sponsor cross-functional project team from early Immunogenicity Risk Assessment through Integrated Summary of Immunogenicity
- Identifying relevant information for your project's Integrated Summary
- Determining the Integrated Summary structure, level of detail and analysis, and links to other parts of the dossier
- Using a well-constructed Integrated Summary to reduce potential concerns
Part 3 – Interactive Discussion: Using the Integrated Summary of Immunogenicity to Minimize Regulatory Questions at the Marketing Authorization Stage
- Discussion topics to be driven by participant’s questions and case examples