Compositions and methods for editing, e.g., introducing double-stranded breaks, within theHAO1gene are provided. Compositions and methods for treating subjects having primary hyperoxaluria type 1 (PH1), are provided.本發明提供用於HAO1基因內編輯(例如引入雙股斷裂)之組合物及方法。本發明提供用於治療患有原發性高草酸尿症第1型(PH1)之個體之組合物及方法。