EAGAN, Minn.--(BUSINESS WIRE)--Biothera announced today that it completed enrollment in the first arm of its metastatic colorectal cancer (mCRC) trial in July. The dual-arm trial is evaluating the combination therapy of Imprime PGG®, the company’s lead drug candidate, and Erbitux® (cetuximab), a monoclonal antibody from ImClone Systems, with or without chemotherapy.