UCB will acquire U.S.-based Ra Pharmaceuticals in a $2.1 billion deal that will enable the Belgian drugmaker to offer new treatment options for several rare diseases in neurology and immunology.

Less than a month after the company’s Phase III brain cancer treatment failed, San Diego-based Tocagen is undergoing a restructuring and will reduce the employee workforce by 65 percent.

Mylan NV agreed to settle U.S. SEC charges that the company hid from investors the impact of a federal probe into the drugmaker’s overbilling the government for the EpiPen allergy treatment.

Southern California-based Sienna Biopharmaceuticals filed for bankruptcy, which sent share prices tumbling more than 73 percent.

India banned the sale of electronic cigarettes and warned of an “epidemic” among young people, in the latest and potentially biggest move globally against vaping over growing health concerns.

Lexicon Pharmaceuticals Inc. said France’s Sanofi SA will pay the Texas-based drugmaker $260 million for the termination of their partnership to develop the diabetes drug Zynquista.

Neurotrope Inc.’s shares tumbled nearly 80 percent after the company said the drug developer’s experimental Alzheimer’s disease treatment Bryostatin-1 did not meet the main goal of a mid-stage study.

Mallinckrodt Plc hired restructuring firms and may choose to seek bankruptcy protection, Bloomberg reported, sending the drugmaker’s shares down 40 percent.

Idera Pharmaceuticals announced an immuno-oncology collaboration with AbbVie to evaluate a combination therapy aimed at stimulating the immune system to create an anti-tumor response.

Mallinckrodt shares fell 12% after a U.S. Court of Appeals upheld a federal district court’s decision to reject a patent infringement lawsuit against Praxair’s nitric oxide drug product delivery system.