Following a racist tweet issued by US comedienne Roseanne Barr earlier this week, Sanofi has rejected her claim that its sleep aid drug Ambien was responsible for her behaviour.
A look back at some of this week's most eyecatching stories, including the scandal around Cambridge Analytica's unauthorised data harvesting for the Trump election campaign.
It has been five years since Lexicon Pharma's type 1 diabetes therapy, Zynquista, was rejected by the FDA, and it may struggle to have a better outcome at its second attempt.