Shares of San Diego-based Vical Inc. (NASDAQ:VICL) fell 23 percent, or 43 cents, to $1.44 Monday as longtime partner Astellas Pharma Inc. took the wraps off top-line data showing that ASP-0113, a vaccine designed to prevent cytomegalovirus (CMV) disease and associated complications in hematopoietic stem cell transplant (HCT) recipients, failed to meet primary or secondary endpoints of the phase III study.