Lancet:皮下注射甲氨蝶呤治疗中重度斑块型银屑病的强化给药方案

2016-12-22 xing.T MedSci原创

该研究结果显示银屑病患者皮下注射氨甲喋呤在治疗52周可以得到可喜的风险-效益比。对待这类使用甲氨喋呤的患者时应考虑给药途径和强化给药方案。

甲氨喋呤是治疗中度至重度银屑病最常用的全身药物之一,然而,关于其使用的高质量证据较为稀缺,仅限于口服给药。近日,顶级医学期刊Lancet上发表了一篇研究文章,旨在评估中度至重度斑块型银屑病患者皮下注射甲氨喋呤的强化给药方案的效果。

研究者进行了一项前瞻性、多中心、随机、双盲、安慰剂对照的3期临床试验(METOP),该研究在德国、法国、荷兰和英国的16个地区进行。符合条件的患者年龄在18岁以上,在进入研究前至少6个月被诊断为慢性斑块型银屑病,目前为中度至重度疾病,并未接受过甲氨蝶呤治疗。


参与者按3:1比例被随机分组,分别接受在前16周起始剂量为17.5mg/周的甲氨蝶呤或安慰剂治疗,随后所有患者接受甲氨蝶呤治疗,直至52周(即分为甲氨蝶呤-甲氨蝶呤组和安慰剂-甲氨蝶呤组)。

甲氨蝶呤治疗8周后如果患者没有达到基础银屑病面积和严重指数评分(PASI)至少降低50%,其剂量允许递增到22.5mg/周,安慰剂注射体积也相应的增加,联合叶酸治疗5mg/周。

对参与者和研究者隐瞒分组情况,从随机化时候开始直到16周临时数据库锁定,从16周起开放标签,没有参与者或调查人员进行掩饰。主要疗效终点是从基线到16周PASI评分降低75%(PASI 75)。采用改良的意向性治疗进行分析,对非应答者进行填补。本研究已在EudraCT进行注册,编号为2012-002716-10。

在2013年2月22日和2015年5月13日期间,研究者随机分配120例患者接受甲氨喋呤(n=91)或安慰剂组(n=29)治疗。在16周时,在甲氨蝶呤组达到PASI 75响应率的有37名(41%)患者,而安慰剂组为3名(10%)(相对危险度为3.93,95%可信区间为1.31-11.81;P=0.0026)。皮下注射甲氨喋呤整体耐受性良好,没有患者出现死亡、严重感染、恶性肿瘤和主要的心血管不良事件。在整个52周的治疗期间,在接受甲氨喋呤治疗的患者中共有3例(3%)出现严重不良事件。

该研究结果显示银屑病患者皮下注射氨甲喋呤在治疗52周可以得到可喜的风险-效益比。对待这类使用甲氨喋呤的患者时应考虑给药途径和强化给药方案。

原始出处:

Richard B Warren,et al. An intensified dosing schedule of subcutaneous methotrexate in patients with moderate to severe plaque-type psoriasis (METOP): a 52 week, multicentre, randomised, double-blind, placebo-controlled, phase 3 trial. Lancet. 21 December 2016.

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甲氨蝶呤为抗叶酸类抗肿瘤药,主要通过对二氢叶酸还原酶的抑制而达到阻碍肿瘤细胞的合成,而抑制肿瘤细胞的生长与繁殖。在用甲氨蝶呤后,加用甲酰四氢叶酸钙,可直接向细胞提供四氢叶酸辅酶,避开甲氨蝶呤的抑制作用,以减轻其细胞毒的毒性作用。甲氨蝶呤(MTX),是一种既有抗炎又有抗肿瘤特性的有效叶酸拮抗剂,广泛应用于很多自身免疫性疾病,包括类风湿性关节炎(RA),银屑病,和炎症性肠病(IBD)的治疗。在过去

BMJ:甲氨蝶呤 vs 甲氨蝶呤联合疾病修饰性抗风湿药物治疗类风湿性关节炎

该研究的目的是比较基于缓解疾病的抗风湿性药物(DMARD)甲氨蝶呤治疗未经治疗过的类风湿性关节炎患者或对甲氨蝶呤反应不足的患者治疗结果。原始出处:Glen S Hazlewood,Cheryl Barnabe,George Tomlinson,et al.Methotrexate monotherapy and methotrexate combination therapy with tradi

J Clin Oncol:高危B-ALL患者来说,接受大剂量甲氨蝶呤治疗可更好地改善其生存率

儿童和年轻成人高危B-急性淋巴细胞白血病(B-ALL)的预后已明显改善,但是仍有20-25%的患者并不能治愈。儿童肿瘤学小组AALL0232测试了两项干预措施以提高患者的生存率。 2004年1月至2011年1月研究人员共纳入了3154名新诊断为高危B-ALL的患者,年龄为1-30岁。采用2 × 2析因设计,将2914名患者随机分至诱导期接受地塞米松(14天)VS.泼尼松(28天)治疗,中间维

Eur J Gas & Hep:甲氨蝶呤治疗克罗恩病的可行性

MTX治疗克罗恩病,至少有1/3的患者可以达到无类固醇依赖的临床缓解,有将近2/3的治疗有反应患者无复发生存期达到1年。MTX应被视为克罗恩病患者其他疗法无效时的可行的治疗选择。