PPARGC1A and hepatocellular carcinoma: Downregulation of PGC1α expression has been reported in publicly available repositories, such as the Cancer Genome Atlas (TCGA, https://www.cbioportal.org/) (accessed on 4 January 2017) and GSE14520 (https://www.ncbi.nlm.nih.gov/geo/info/overview.html) (accessed on 2 January 2021), containing transcriptomic analyses of HCC patients, and in clinical findings [175,178].