Myrexis, Inc. announced that Richard B. Brewer, its chief executive officer and board member, has died after a long battle with multiple myeloma, a type of blood cancer. Brewer joined the company in May 2012 after nearly 35 years in the biotech and pharmaceutical industries guiding development and commercialization of such breakthrough drugs as human growth hormone for children's growth disorders, the first new drug in 30 years for cystic fibrosis; the first new drug in over a decade for heart failure, pioneering clot-busting drugs for heart attacks and strokes, and other first-in-class drugs and devices for cancer and heart disease. Gryska will become its acting CEO until the company communicates its succession plans in the coming weeks.