This document discusses Canada's orphan drug regulatory framework. It begins by defining orphan drugs as treatments for rare diseases affecting fewer than 5 in 10,000 people. It outlines challenges in developing and accessing orphan drugs, including small patient populations that make clinical trials difficult. Health Canada is proposing a framework to improve orphan drug availability through an accelerated review pathway, early advice to sponsors, transparency throughout the drug life cycle, and collaboration with international regulators and health technology assessment bodies. The key components of the framework include orphan drug designation, written regulatory advice, modernized market authorization applications, post-market oversight, and transparency.