Stephen Crohn
"The man who couldn't catch AIDS"

Stephen Lyon Crohn (September 5, 1946 – August 23, 2013), also known as "the man who can't catch AIDS", was a man notable for a genetic mutation that caused him to be immune to AIDS. He was a great-nephew of Burrill Bernard Crohn, for whom Crohn's disease is named.
Crohn had the Δ32 mutation on the CCR5 receptor, a protein on the surface of white blood cells that is involved in the immune system and serves as an access route for many forms of HIV to enter and infect host cells. This mutation rendered him effectively immune to many forms of HIV.
Death
Crohn committed suicide by a drug overdose on oxycodone and benzodiazepines at the age of 66.
“Stephen Crohn” enters the record as "The man who couldn't catch AIDS". Crown Archives preserves that source wording while asking what Stephen, Crohn and couldn't can confirm, complicate or overturn.
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This entry incorporates text from “Stephen Crohn” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.