Department of Pediatric Nephrology and Rheumatism and Immunology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, P. R. China.
Department of Pediatric Nephrology and Rheumatism and Immunology, Shandong Provincial Hospital, Affiliated to Shandong First Medical University, Jinan, P. R. China.
Ren Fail. 2022 Dec;44(1):1061-1069. doi: 10.1080/0886022X.2022.2089167.
OBJECTIVE: To explore the clinical characteristics, treatment protocol and prognosis of children with anti-complement factor H (CFH) autoantibody (Ab)-associated hemolytic uremic syndrome (HUS). METHODS: Clinical data of 8 patients with anti-CFH Ab-associated HUS who were admitted to Shandong Provincial Hospital from January 2011 to December 2020 were collected retrospectively. RESULTS: The age at disease onset ranged between 5.83 and 13.5 years, with a male: female ratio of 1.67:1. The time of onset was distributed from May to June and November to December. Digestive and upper respiratory tract infections were common prodromal infections. Positivity for anti-CFH Ab and reduced C3 levels were observed among all patients. Heterozygous mutation of the CHFR5 gene (c.669del A) and homozygous loss of the CFHR1 gene [loss2(EXON:2-6)] were found in two patients. All patients received early treatment with plasma exchange and corticosteroid therapy. Six patients were given immunosuppressive agents (cyclophosphamide and/or mycophenolate mofetil) for persistent proteinuria. The follow-up period was 12-114 months. Four of 8 patients achieved complete remission, 3 achieved partial remission, and 1 died. Relapse occurred in two patients. CONCLUSION: Children with anti-CFH Ab-associated HUS were mainly school-aged and predominantly male, with onset times of summer and winter. Digestive and upper respiratory tract infections were common prodromal infections. Plasma exchange combined with methylprednisolone pulse therapy in the acute phase and cyclophosphamide or mycophenolate mofetil treatment for maintenance can be utilized in children with anti-CFH Ab-associated HUS if eculizumab is not available.
目的:探讨抗补体因子 H(CFH)自身抗体(Ab)相关溶血尿毒症综合征(HUS)患儿的临床特征、治疗方案及预后。
方法:回顾性收集 2011 年 1 月至 2020 年 12 月山东省立医院收治的 8 例抗-CFH Ab 相关 HUS 患儿的临床资料。
结果:发病年龄 5.8313.5 岁,男∶女为 1.67∶1。发病时间分布在 56 月和 1112 月。前驱感染以消化道和上呼吸道感染多见。所有患儿均表现为抗-CFH Ab 阳性和 C3 水平降低。2 例患儿存在 CHFR5 基因杂合突变(c.669del A)和 CFHR1 基因纯合缺失[loss2(EXON:2-6)]。所有患儿均早期接受血浆置换和糖皮质激素治疗。6 例患儿因持续蛋白尿给予免疫抑制剂(环磷酰胺和/或吗替麦考酚酯)。随访 12114 个月。8 例患儿中,完全缓解 4 例,部分缓解 3 例,死亡 1 例。2 例患儿复发。
结论:抗-CFH Ab 相关 HUS 患儿以学龄期儿童为主,男多于女,冬夏两季多发。前驱感染以消化道和上呼吸道感染多见。在无依库珠单抗的情况下,可采用血浆置换联合甲基泼尼松龙冲击治疗的急性期治疗方案,以及环磷酰胺或吗替麦考酚酯维持治疗方案治疗抗-CFH Ab 相关 HUS 患儿。
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