Pfizer placed a $6.7 billion bet on the outcome of two phase 3 trials of Arena Pharmaceuticals' etrasimod in ulcerative colitis (UC) when it acquired the company earlier this year, and the gamble ...

Pfizer is voluntarily withdrawing its sickle cell disease (SCD) therapy Oxbryta from all world markets after finding an "imbalance" in deaths in its clinical trials programme. It's a blow to the ...