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兰瑞肽用于无功能性神经内分泌性肿瘤

2015-01-29 曹利 译 医学论坛网

兰瑞肽(Lanreotide)这个长效生长激素抑制素类似物比安慰剂能显著提高神经内分泌瘤患者无进展生存期。 对于胃肠或胰腺易发的神经内分泌性肿瘤,尤其是低度增生的低度恶性肿瘤,他们发生和转移的自然发展病史都非常漫长。对于可观察到进展的或能产生功能性多肽或血管活性胺的神经内分泌瘤,标准治疗方法是每月注射长效生长激素抑制素类似物。该治疗方法可以良好的控制发病症状,但是抗肿瘤增殖效应不甚明确。 针对

兰瑞肽(Lanreotide)这个长效生长激素抑制素类似物比安慰剂能显著提高神经内分泌瘤患者无进展生存期。

对于胃肠或胰腺易发的神经内分泌性肿瘤,尤其是低度增生的低度恶性肿瘤,他们发生和转移的自然发展病史都非常漫长。对于可观察到进展的或能产生功能性多肽或血管活性胺的神经内分泌瘤,标准治疗方法是每月注射长效生长激素抑制素类似物。该治疗方法可以良好的控制发病症状,但是抗肿瘤增殖效应不甚明确。

针对长效生长激素抑制素类似物(兰瑞肽)用于低级别、无功能性的胃肠胰腺神经内分泌性瘤的疗效,研究人员开展了一项多中心、国际合作的随机双盲安慰剂对照试验。204名患者参与,给予兰瑞肽(每28天1次深层皮下注射120mg)或安慰剂的治疗。疾病进展可交叉使用兰瑞肽。84%患者未经治疗,95%-96%患者在试验开始3-6月病情未进展。42%-48%患者原发部位在胰腺,28%-32%患者的Ki67增生性指数为3%-10%。

对比安慰剂,兰瑞肽能显著提高患者的无进展生存期 (PFS,是研究主要终点)未达到18个月vs18个,风险比=0.47,P<0.001]。在试验进行到24个月时,兰瑞肽组患者的PFS为65.1%,而安慰剂组PFS为33.0%。考虑到此次试验为交叉设计,试验组与对照组的总生存初步数据并无差异。兰瑞肽相关严重的不良事件较少,包括腹泻、腹痛。

点评:

兰瑞肽现在已被确定为无功能性神经内分泌性肿瘤一种治疗新选择。尽管上述试验和最近发布的PROMID试验结果均支持该药物用于胃肠胰腺神经内分泌瘤的早期治疗以至于新近诊断的肿瘤,但使用生长抑素类似物对肿瘤进行观察和治疗直到临床进展,是否改变治疗方法仍不明确。该试验中,兰瑞肽组合安慰剂组生存无差异,2年后安慰剂组PFS为33%,有人认为,对于无功能性低级神经内分泌瘤的患者,仅需在疾病进展时进行初步监测和治疗即可。

原文发表于2014年7月17日的《新英格兰医学》杂志上。

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    2016-01-03 gwc392
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    2015-01-31 139.227.156.**

    没有完全搞明白

    0

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