Dyax Corp. (Nasdaq: DYAX) is a clinical-stage drug company focused on the discovery, development and commercialization of biotherapeutics for oncology and inflammatory conditions. The company today announced positive topline results from its second phase-3, placebo-controlled trial, EDEMA4, for its lead product candidate DX-88 (ecallantide) for hereditary angioedema (HAE), or the rapid swelling of the skin.