HGF and cancer: In this context, it is important to note that cancer growth and metastasis of c-Met-positive urogenital cancers involves further stimuli besides HGF-binding and subsequent c-Met signaling since no anti-tumor effect was detectable in an ovarian cancer clinical trial after using a humanized IgG2 antibody directed against HGF (AMG-102), even though AMG-102 prevents HGF binding to c-Met and subsequent c-Met activation [107].