Biothera has completed patient enrollment in a second phase II clinical trial testing a drug called Imprime PGG against non-small cell lung cancer (NSCLC). Imprime PGG redirects the immune system to attack the cancer. The drug also enhances the effectiveness of antibody drugs (drugs in the form of a type of immune system protein) like bevacizumab (Avastin) or cetuximab (Erbitux). The current phase II trial will compare NSCLC patients receiving Imprime PGG in combination with Avastin and chemotherapy to those receiving only Avastin and chemotherapy. Another ongoing phase II trial uses a similar design, but with Erbitux instead of Avastin, and has produced promising preliminary results.