The present application provides materials and methods for treating a patient with one or more conditions or disorders associated with AGXT, both ex vivo or in vivo. For example, the present disclosure provides materials and methods for treating a patient with Primary Hyperoxaluria Type 1 (PH1). The present application also provides materials and methods for editing an AGXT gene in a cell by genome editing. The present application also provides materials and methods for altering a contiguous genomic sequence of an AGXT gene in a cell. In addition, the present application provides one or more gRNAs for editing an AGXT gene. The present application also provides a therapeutic comprising at least one or more gRNAs for editing an AGXT gene. In addition, the present application provides a therapeutic for treating a patient with an AGXT related condition or disorder.