Sanofi hits reset on drug from $2.5B deal after ‘lower than projected’ efficacy in trials
Sanofi did not see the efficacy it wanted in mid-stage tests of a cytokine therapy from its $2.5 billion acquisition of Synthorx. While the pharmaceutical giant isn’t giving up on the drug, it said it will restart the molecule in a new Phase 1/2 program, a setback that will lead to a €1.6 billion financial writedown.