CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins80% CONFIDENCEOverall confidence: 80%How well the pin's source and references back up its dates.Weighted average of how firmly 3 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better
Amgen's[1] own history page and FundingUniverse's[2] company history both give 1 June 1989 as the FDA approval date.On 1 June 1989 the FDA approved Epogen (epoetin alfa), Amgen's recombinant erythropoietin for anemia in kidney dialysis patients, its first product after nine years in business.
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