Description:NMRbased metabolomic analysis performed on two cell lines to investigate glucose-1,6-bisphosphate modulation in PMM2-related congenital disorder of glycosylation for new drug discovery perspectives: 1. Arg141His/Phe119LeuPMM2 patient-derived fibroblasts with a knock-out of the PMM1 gene 2. Arg141His/Phe119LeuPMM2 patient-derived fibroblasts scramble.