Allena Pharmaceuticals, Inc. is a biopharmaceutical company. The Company is focused on developing and commercializing non-systemic oral protein therapeutics to treat metabolic and orphan diseases, with a particular focus on nephrologic and urologic conditions. Its lead product candidate, ALLN-177, is in an ongoing Phase II clinical trial and is being developed for the chronic management of hyperoxaluria and kidney stones. ALLN-177 is an orally administered, recombinant oxalate-degrading enzyme. ALLN-177 targets oxalate in the gastrointestinal (GI) tract to reduce the burden of both dietary and endogenously produced oxalate. ALLN-177 has the potential to decrease the oxalate available systemically for deposition as calcium oxalate crystals or stones in the kidneys, as well as to reduce the incidence of calcium oxalate related complications. Its technological approach enables the design and development of oral protein therapies that remain in the GI tract.