奥玛珠单抗治疗患者哮喘控制的纵向变化:来自EXCELS研究前2年的中期结果
2012/11/09
摘要
背景:哮喘指南强调获得并维持哮喘控制的重要性,但许多中度至严重哮喘患者常常未能获得很好的控制。
目的:本研究为2年的中期分析,评价奥玛珠单抗治疗患者哮喘控制的纵向变化。
方法:EXCELS是一项正在进行的观察性队列研究,约5000名奥玛珠单抗治疗的哮喘患者和2500名非奥玛珠单抗治疗的患者参与,参与者年龄≥12岁,患中度至严重哮喘。每6个月采用哮喘控制测试(ACT)对哮喘控制进行评价。
结果:奥玛珠单抗治疗队列亚组包括基线状态下开始奥玛珠单抗治疗的患者(新治疗,n = 549)和那些基线状态之前采用奥玛珠单抗治疗>7天的患者(持续治疗,n = 4421)。同时收集研究开始前和开始时未采用奥玛珠单抗治疗患者(非奥玛珠单抗组,n = 2867)的相关数据。超过半数的新治疗患者(54%)ACT显示哮喘控制得到改善,第6个月时具有最小显著差异(MID,改善>3分),在整个随访期内,这些患者的比例持续增加,在24个月时达到62%。中度哮喘和严重哮喘患者获得的结果类似。持续使用奥玛珠单抗的患者在整个观察期内哮喘持续控制。
结论:在2年的研究期内,初始采用奥玛珠单抗治疗的患者,哮喘控制得到改善和维持。持续使用奥玛珠单抗的哮喘患者,在2年研究期内哮喘维持控制,而未采用奥玛珠单抗的哮喘患者哮喘控制改善不明显。
(林江涛 审校)
J Asthma. 2012 Aug;49(6):642-8.
Longitudinal Changes in Asthma Control with Omalizumab: 2-Year Interim Data from the EXCELS Study.
Eisner MD, Zazzali JL, Miller MK, Bradley MS, Schatz M.
Source
Product Development, Inflammation & Respiratory, Genentech, Inc. , South San Francisco, CA , USA.
Abstract
BACKGROUND:Asthma guidelines emphasize the importance of achieving and maintaining asthma control; however, many patients with moderate to severe asthma fail to achieve adequate control.
OBJECTIVE:This 2-year interim analysis evaluated the longitudinal effects of omalizumab on asthma control in patients treated in real-world clinical practice settings. METHODS:EXCELS is an ongoing observational cohort study of approximately 5000 omalizumab-treated and 2500 non-omalizumab-treated patients aged ≥12 years with moderate to severe asthma. Asthma control was measured using the Asthma Control Test (ACT) every 6 months.
RESULTS:Subgroups of the omalizumab cohort included those who initiated omalizumab at baseline (new starts, n = 549) and those treated with omalizumab >7 days before baseline (established users, n = 4421). For reference, data are also presented for patients who were not receiving omalizumab prior to or at the time of enrolment (non-omalizumab, n = 2867). Over half of the new starts (54%) achieved improvement in ACT consistent with the minimally important difference (MID, defined as ≥3-point improvement) by Month 6 and this proportion increased throughout the follow-up period, reaching 62% at Month 24. Similar results were observed in patients stratified by moderate and severe asthma. Established users of omalizumab maintained asthma control throughout the observation period.
CONCLUSION: Over a 2-year period, patients initiating omalizumab therapy experienced clinically relevant improvements in asthma control, which were maintained during 2 years of longitudinal follow-up. Established users of omalizumab maintained asthma control over the 2-year period with a small improvement similar to that seen in non-omalizumab users.
J Asthma. 2012 Aug;49(6):642-8.
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