TUSTIN, Calif., June 7 /PRNewswire-FirstCall/ -- Peregrine Pharmaceuticals, Inc. (Nasdaq: PPHM - News), a biopharmaceutical company developing targeted therapeutics for the treatment of cancer and hepatitis C virus infections, today reported top-line results on the effect of bavituximab (formerly Tarvacin) on viral RNA serum titers when administered as single dose monotherapy in a Phase Ia study in patients with chronic hepatitis C virus (HCV) infection. In this analysis, bavituximab showed signs of anti-viral activity at all four study dose levels, and it also showed evidence of a prolonged anti-viral effect.