Janssen R&D LLC and Gilead Sciences Inc. were prepared to battle it out for market share in the increasingly competitive and highly lucrative hepatitis C arena. However, the companies found themselves in an unexpected, head-to-head regulatory battle over trade names in the run-up to approval of their respective antiviral compounds, Olysio (simeprevir) and Sovaldi (sofosbuvir).
The NDAs for simeprevir, an NS3/4A protease inhibitor, and sofosbuvir, a nucleotide analog NS5B polymerase inhibitor, were submitted just nine days apart and travelled a parallel review track in the...
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