GPD1 and breast cancer: To explore IDC metabolism at the proteome level, MALDI-ToF/ToF was used to emphasize that glycerol-3-phosphate dehydrogenase 1 (GPD1) and monoacylglycerol lipase (MAGL) involved in triacylglyceride metabolism were downregulated in BC tissue in comparison to healthy counterparts, signifying that these enzymes might be promising tissue-based protein biomarkers with predictive value for BC [90].