A new article has been published in EMBO Molecular Medicine about the potential of basket clinical trials to advance rare disease research. Produced in the context of the activities of the International Rare Disease Research Consortium (IRDiRC)’s Task Force on shared molecular etiologies, the article outlines the current challenges and opportunities in adopting a basket trial approach, and makes recommendations for how such strategies can be incorporated into rare disease drug development.
The term “basket clinical trial” refers to a study design which evaluates a single intervention for multiple diseases which share an underlying molecular aetiology. In recent years, this approach has become increasingly common in oncology, leading to drug approvals and paving the way for implementation in other fields of medicine.
In this article, the Task Force identifies several challenges in conducting basket trials for rare diseases. Firstly, research teams must overcome all the typical challenges associated with rare diseases and their small patient populations. There are also a number of challenges associated with basket trials specifically, such as evaluating the biologic plausibility of the targeted intervention strategy, and assessing the safety in different populations with different symptoms and existing co-morbidities.
Despite these challenges, basket clinical trials have significant potential to accelerate rare disease drug development. This includes by giving more patients access to clinical trials and limiting the methodological and analytic hurdles associated with studies involving small populations. Additionally, a shared molecular aetiology approach to research could help stimulate innovation, by developing precision medicines which address the needs of patients with different rare diseases.
In order to fully capture this potential, the Task Force makes a number of recommendations for how to incorporate basket clinical trials into rare disease research such that they are able to fully realise their potential. This includes considerations for pre-clinical research, study design, research ethics, and regulatory decision-making.
Key considerations for the successful design and implementation of basket trials in rare diseases (Zanello et al, 2023)
Overall, the Task Force is hopeful that expanding aetiology-based approaches beyond the field of oncology will accelerate drug development and help fulfil the large amount of unmet medical need currently faced by the rare disease community. By encouraging further collaboration between clinicians, industry, regulatory bodies, policy makers, and patients, the challenges outlined in this article can be overcome and the full potential of this innovative approach can be realised.