Accelerated approval by the US FDA in the uncommon cancer mantle cell lymphoma is just the beginning for AstraZeneca PLC's Bruton's tyrosine kinase (BTK) inhibitor Calquence (acalabrutinib), which is poised to ultimately challenge Johnson & Johnson's first-in-class megahit Imbruvica across a range of indications.
FDA approved Calquence on Oct. 31 for second-line treatment of MCL, an aggressive type of non-Hodgkin lymphoma that strikes about...








