On December 23, 2025, proposed amendments to the Clinical Trials Regulations and Regulations Amending Certain Regulations Relating to Clinical Trials were notified in G/TBT/N/CAN/766. The proposed Regulations would establish a new, standalone framework under the Food and Drugs Act for clinical trials involving drugs for human use. The purpose of this addendum is to consult stakeholders on proposed policy for: clinical trials involving CTOs with the proposed Clinical Trials Regulations; and; clinical trials involving blood and blood components (herein referred to as blood) with the proposed Clinical Trials Regulations. Clinical trials involving CTOs CTOs are typically regulated under the Safety of Human Cells, Tissues, and Organs Regulations (CTOR). The CTOR provides a framework designed to minimize potential health risks by establishing safety requirements for the processing and handling of CTOs that are transplanted under standard medical practice. However, when CTOs are used as investigational products in a clinical trial, they are subject to Canada’s clinical trial regulations instead. Health Canada is proposing an exemption from the requirement to hold a clinical trial authorization under the proposed Clinical Trial Regulations for low-risk trials in which the cell, tissue or organ that is being investigated is minimally manipulated and is used for the same basic function in the recipient as in the donor (i.e. homologous use), provided no other drugs are being used in…