Updated project metadata. Decellularized extracellular matrix (dECM) is used to make regenerative biomaterials. As the ECM markups vary across organs, derived dECM products may possess different molecular and biological profiles as well. This study aims to compare the proteomic profiles of dECM biomaterials derived from small intestinal submucosa (SIS) and vocal fold (VF) tissue using mass spectrometry-based proteomics.