nagalase = alpha-N-acetylgalactosaminidase, an enzyme "that completely blocks conversion of Gc protein to Gc-MAF, preventing tumor-cell killing by the macrophages" per http://www.thenhf.com/articles/articles_792/articles_792.htm
There is no solitary cure for cancer, as cancer is not a single disease entity but rather hundreds of different disease processes. Some cancers are very readily curable, whereas others are rarely curable.