I certainly have not written off the possibility that GILD's 8-weeks regimen would be non inferior to a 12-weeks one. Riba sparing plus only 8 weeks seems too much of a stretch, but the real option might be as mentioned before - 8 weeks with Riba vs 12 weeks without. In this case I don't expect the shorter duration treatment to have a meaningful commercial advantage unless other DAA regimens would include Riba.
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