{"data":{"id":"us/21-cfr-316.40","jurisdiction":"us","citation":"21 CFR 316.40","heading":"Treatment use of a designated orphan drug.","body":"Prospective investigators seeking to obtain treatment use of designated orphan drugs may do so as provided in subpart I of this chapter.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER D—DRUGS FOR HUMAN USE","PART 316—ORPHAN DRUGS","Subpart E—Open Protocols for Investigations"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-21.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:47Z","sha256":"5bd20faa0070d3aa0cba6f53e7e1b2b1ae94c59e909258bcdfcfe0882eac15e6","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-316.36","next":"us/21-cfr-316.50"},"notice":"GroundRules: Original legal text. Not legal advice."}