Integrating RCTs, RWD, AI/ML and Statistics: Next-Generation Evidence Synthesis
This work addresses the problem of limited and costly evidence generation in clinical research for regulators and drug developers, though it is incremental as it builds on existing methods rather than introducing a new paradigm.
This paper tackles the challenge of generating robust clinical evidence by proposing the integration of randomized controlled trials (RWD), real-world data (AI/ML), artificial intelligence/machine learning, and traditional statistics, arguing that this approach can enhance power, external validity, and policy relevance in drug development.
Randomized controlled trials (RCTs) have been the cornerstone of clinical evidence; however, their cost, duration, and restrictive eligibility criteria limit power and external validity. Studies using real-world data (RWD), historically considered less reliable for establishing causality, are now recognized to be important for generating real-world evidence (RWE). In parallel, artificial intelligence and machine learning (AI/ML) are being increasingly used throughout the drug development process, providing scalability and flexibility but also presenting challenges in interpretability and rigor that traditional statistics do not face. This Perspective argues that the future of evidence generation will not depend on RCTs versus RWD, or statistics versus AI/ML, but on their principled integration. To this end, a causal roadmap is needed to clarify inferential goals, make assumptions explicit, and ensure transparency about tradeoffs. We highlight key objectives of integrative evidence synthesis, including transporting RCT results to broader populations, embedding AI-assisted analyses within RCTs, designing hybrid controlled trials, and extending short-term RCTs with long-term RWD. We also outline future directions in privacy-preserving analytics, uncertainty quantification, and small-sample methods. By uniting statistical rigor with AI/ML innovation, integrative approaches can produce robust, transparent, and policy-relevant evidence, making them a key component of modern regulatory science.