LONDON, UK: AstraZeneca‘s Alexion has exercised its option to acquire all remaining equity in Caelum Biosciences for CAEL-101, a potentially first-in-class fibril-reactive monoclonal antibody (mAb) for the treatment of light chain (AL) amyloidosis. AL amyloidosis is a rare disease in which misfolded amyloid proteins build up in organs throughout the body, including the heart and…