临床上显著的EBV感染在所有基因干细胞移植儿童接受letermovir作为主要的CMV预防
Christina Oikonomopoulou1, Anna Paisiou1, Aikaterini Kaisari1
1Stem Cell Transplant Unit, Aghia Sofia Children's Hospital, Athens, Greece.
概括
莱特莫维尔在儿童干细胞移植患者中有效地防止了细胞巨乳病毒 (CMV) 的重新激活. 然而,它与埃普斯坦-巴尔病毒 (EBV) 反激活和EBV感染的增加有关,可能减少移植对宿主疾病 (GvHD) 的发生.
科学领域:
- 儿科血液学/瘤学
- 移植中的传染病.
- 抗病毒预防 抗病毒预防
背景情况:
- 细胞巨乳病毒 (CMV) 感染是儿科全源造血干细胞移植 (HSCT) 的重要并发症.
- 莱特莫维尔的预防在成年人中已显示出有效性,但儿童的数据有限,非标签使用引起了人们对与爱斯坦-巴尔病毒 (EBV) 再激活的潜在关联的担忧.
研究的目的:
- 为了追溯比较接受莱特莫维尔治疗的超高风险儿科HSCT接受者与未接受者之间的CMV和EBV再激活和临床显著的EBV感染 (csEBVi) 的发生率.
- 评估莱特莫维尔对这种患者群体的移植对宿主疾病 (GvHD) 的影响.
主要方法:
- 对37名患儿白血病的儿童白血病患者进行超高风险的HSCT (血清阳性儿童/血清阴性捐赠者) 的回顾性分析.
- 患者被分为两组:接受莱特莫维尔 (LET组,n=11) 和未接受莱特莫维尔 (非LET组,n=26) 的患者.
- 主要终点包括CMV再激活,EBV再激活和csEBVi的累积发病率;次要终点是GvHD发病率.
主要成果:
- 莱特莫维尔组显示出较低的CMV活性化趋势 (10%对38.4%,p=0.07),但EBV活性化 (55%对23%,p=0.07) 和csEBVi (40%对0%,p<0.001) 的发病率明显较高.
- 在莱特莫维尔组中没有观察到GvHD,而在非莱特莫维尔组中,急性GvHD (aGvHD) 为23%,慢性GvHD (cGvHD) 为11.5%.
- 随访时间中位数为34.3个月.
结论:
- 莱特莫维尔在预防儿科HSCT接受者的CMV再激活方面表现出有效性.
- 在接受letermovir的儿童中观察到EBV重新激活和临床显著的EBV感染的显著增加.
- 这种药物与减少GvHD的患病率有关,但由于这种回顾性分析的局限性,这些发现需要在更大的前性研究中进行验证.
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