Ganoderic acid A (Standard) is a reference standard for research and analysis in studies involving Ganoderic acid A. 1. Ganoderic acid A exhibits antitumor activity, mediated through its inhibitory effect on nuclear transcription factor-kappaB and activator protein-1. 2. Ganoderic acid A can induce proliferation inhibition, apoptosis and suppression of invasion in human osteosarcoma HOS and MG-63 cells. 3. Ganoderic acid A promotes cisplatin-induced cell death by enhancing the sensitivity of HepG2 cells to cisplatin mainly via the signal transducer and activator of transcription 3 suppression, significantly suppresses IL-6-induced signal transducer and activator of transcription 3 phosphorylation.