US FDA Guidance for Industry Jan-Mar 2026

DateTitle of guidance and link to documentType and level
of guidance
About the guidance
12 Jan 2026Use of Bayesian Methodology in Clinical Trials of Drug and Biological ProductsDraftThis document provides guidance to sponsors and applicants submitting INDs, NDAs, BLAs, or supplemental applications on the appropriate use of Bayesian methods in clinical trials. Bayesian methods can be used in various ways in clinical trials. For example, Bayesian calculations can be used to govern the timing and adaptation rules for an interim analysis in an adaptive design, to inform design elements (e.g., dose selection) for subsequent clinical trials, or to support primary inference in a trial. The primary focus of this guidance is on the use of Bayesian methods to support primary inference in clinical trials intended to support the effectiveness and safety of drugs.
6 Jan 2026Clinical Decision Support Software

(Medical Devices)
FinalThis guidance clarifies the scope of FDA’s oversight of clinical decision support software intended for health care professionals (HCPs) as devices. Not all clinical decision support software used in healthcare settings are devices and therefore subject to
FDA oversight as a device.

The purpose of this guidance is to describe FDA’s regulatory approach to CDS software
functions.