Biogen (NSDQ:BIIB) said on Thursday that it received a subpoena in December last year from federal investigators about the prices of its top-selling multiple sclerosis drugs, Tecfidera, Avonex, Tysabri and Plegridy.
In its annual regulatory filing, the company wrote that the investigators inquired about “government price reporting, rebate payments and Biogen’s co-pay assistance programs.” While Cambridge, Mass.-based Biogen said it was cooperating with the federal probe, it did not provide any other specific details.
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