Doppelganger Biosystem GmbH is a Germany-based functional proteomics company. Based on the disruptive QSM™ technology platform (quantitative system metabolism) we provide our customers with a deep understanding of disease mechanisms, quantitative disease modulation and metabolic state of patients. The breakthrough QSM™ platform combines functional proteomics analysis with fully mechanistic biosimulation to deliver actionable data for pharmacometrics in basic research and in model-informed drug development (MIDD). Doppelganger QSM™ digital metabolic twins are built on 100% mechanistic models.