摘要该文报道1例由腺嘌呤磷酸核糖转移酶（adenine phosphoribosyltransferase， APRT）基因突变导致的2,8-二羟基腺嘌呤（2,8-dihydroxyadenine，2,8-DHA）结晶性肾病病例。患者，女，60岁，因发现“尿泡沫增多半年”就诊。肾活检光镜下可见不规则的棕黄色、偏振光下具有折光性的2,8-DHA结晶，尿沉渣检测发现2,8-DHA结晶，基因检测发现 APRT基因5号外显子纯合缺失（c.521_523delTCT），最终确诊为2,8-DHA结晶性肾病。经别嘌醇治疗后，患者肾功能好转。该病例报告旨在提高临床医师对2,8-DHA结晶性肾病的认识，早期识别、正确诊断及早期药物干预可延缓肾衰竭进展，改善预后。

abstractsThe paper reports a case of 2,8-dihydroxyadenine (2,8-DHA) crystalline nephropathy caused by mutation of adenine phosphoribosyltransferase ( APRT) gene. The female patient was 60 years old, and sought medical advice due to "foaming urine increased for half a year". Renal biopsy result showed irregular yellowish brown 2,8-DHA crystals with refraction under polarized light. 2,8-DHA crystals were found by urine sediment detection, and homozygous deletion of c.521_523delTCT on exon 5 of APRT gene was found by genetic testing. Finally this patient was diagnosed as 2,8-DHA crystalline nephropathy. Renal function improved after treatment with allopurinol. The case report aims to improve the clinician's understanding of 2,8-DHA crystalline nephropathy. Early recognition, correct diagnosis, and early drug intervention may delay the progression of renal failure and improve the prognosis.