🔬 Discovery

Sofosbuvir

Date
2007 · confidence high
Place
Pharmasset, Princeton, New Jersey, United States
Credited to
Michael J. Sofia
Field
Life & health

What was discovered

Sofia, a chemist at Pharmasset, discovered sofosbuvir, a nucleotide analogue that blocks the hepatitis C virus's NS5B polymerase. Combined into interferon-free oral regimens, it pushed cure rates above 90% in around 12-week treatments, versus the previous 6-12 months of injectable interferon.

Pharmasset was headquartered in Princeton, New Jersey, though some of its chemistry research was also done in Georgia, US; Princeton is used here as the corporate headquarters.

What it led to

  • An effective, well-tolerated cure for chronic hepatitis C
  • Gilead Sciences' $11 billion acquisition of Pharmasset (2011)

Links

Sources✓ verified 2026-09-28