Praise for Nervous System Metastases Draft Guidance
Four stakeholders are praising the FDA draft guidance on evaluating cancer drugs in patients with central nervous system (CNS) metastases and offering suggested changes. Bristol-Myers Squibb says the draft guidance is intended to provide clarity on study procedures and data requirements to support a label claim for benefit to CNS metastases. The comment letter says certain sections of the guidance may require clarification in the context of current clinical practice, and gives its recommendations for those sections.
Novartis asks that the draft include a discussion of how estimands framework in clinical development may have an impact on study designs in the context of CNS metastases.
Regeneron says it commends the agency’s initiative to provide sponsors with guidance around the appropriate design considerations for clinical trials with system anticancer drugs where patients with CNS metastases are included and where CNS anti-tumor activity is intended to be described in product labeling. It offers suggestions it believes will further strengthen the guidance and help ensure that sponsors will be best placed to adequately collect data on CNS anti-tumor activity of systemic anticancer drugs, thus benefiting patients with CNS metastases that need additional evidence-based treatment options.
Finally, Merck says there are several areas in the guidance for which it has comments and asks for clarification.