Pharmaceutical India’s Biocon announced a $3.3 billion deal to acquire the recently set up generics powerhouse Viatris’ biosimilars assets. US pharma giant Pfizer became the latest to hit a roadblock in its attempts to develop a Clostridioides difficile vaccine, (PF-06425090), reporting mixed results from a Phase III trial. Meantime, AstraZeneca and Sanofi presented positive new Phase III data on their RSV disease candidate nirsevimab last Wednesday. Also, drug developer Karyopharm suffered a setback with its endometrial p53 wild-type candidate Xpovio (selinexor). 6 March 2022