The unstoppable trend towards consolidation of protein therapeutic and antibody companies by big pharma continues. Today saw the $325M acquition of privately-held Morphotek of Exton, PA by Eisai of Tokyo. Morphotek uses human B-cell hybridomas to make fully human monoclonals, which they optimize with morphogenics, their technology to create hypermutable hybridoma libraries by disabling DNA mismatch repair processes [pubmed]. Morphotek has a number of antibodies in clinical development, mainly in oncology.

Some other representative transactions in biologics:

Public companies in the biologics space to keep an eye on include:

Seattle Genetics [SGEN], Medarex [MEDX], and Regeneron [REGN]