Seres Therapeutics, Inc., a clinical-stage company, focuses on developing biotherapeutics for serious diseases. The company develops SER-155, an investigational oral live biotherapeutic to decolonize GI pathogens, enhance GI epithelial barrier integrity, and regulate immune response to prevent bacterial bloodstream infections, as well as other pathogen-associated negative clinical outcomes in patients undergoing allogeneic hematopoietic stem cell transplantation. It also develops SER-603, a LBP candidate optimized to treat disruptions in the GI microbiome and to improve GI mucosal barrier integrity through the inhibition of inflammatory bacteria and associated metabolites; and SER-147, a live biotherapeutic composition to prevent bacterial bloodstream and spontaneous bacterial peritonitis …