Lancet:AAV2载体基因组表达VEGF中和蛋白sFLT01的安全性研究

2017-05-17 zhangfan MedSci原创

AAV2-sFLT01具有较好的耐受性和安全性,其疗效需进一步验证

长期眼内注射血管内皮生长因子(VEGF)中和蛋白可有效控制年龄相关的新生血管性黄斑变性。近日研究人员就AAV2载体基因组表达VEGF中和蛋白sFLT01的安全性及耐受性进行研究。

研究在美国进行,参与者为50岁以上的、年龄相关的新生血管性黄斑变性、基线最佳矫正视力的分数20/100以下患者,随机接受4个载体基因组剂量的sFLT01(第一组,2×108载体基因组[vg];第二组2×109 vg;第三组, 6×109 vg; 第四组, 2×1010 vg,每组3名患者), 最大耐受剂量组患者(第5组,2×1010 vg, 7名患者)。研究随访52周。主要目的是单剂量注射 AAV2-sFLT01的安全性及耐受性。

研究从2010-2014年进行,所有患者均完成研究,其中2名第四组患者出现药物相关副作用(发热和眼内炎症,通过外用类固醇缓解)。接受最大剂量的10名患者,有5人26周时最大浓度为32.7-112.0 ng/mL(平均73.7 ng/mL, SD 30.5),52周时下降至53.2 ng/mL。这5名患者中4人基线时抗AAV2抗体阴性,1人弱阳性(1:100)。参与研究的19人中有11人基线视网膜或视网膜下液是可逆转的,其中的6人使用药物后视网膜或视网膜下液减少,视力提高。

研究表明AAV2-sFLT01具有较好的耐受性和安全性,其疗效需进一步验证。

原始出处:


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    2018-02-05 mei539
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    2017-09-25 showtest
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    2017-11-16 howi
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    2017-09-10 lxg951
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    2017-05-19 xuqianhua
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