Rheumatology :非戈替尼对活动期强直性脊柱炎患者12周骶髂关节磁共振成像结构损害的影响(Tortuga试验)

2021-10-24 医路坦克 MedSci原创

强直性脊柱炎是一种慢性免疫介导的疾病,在Tortuga试验中用非戈替尼在AS中观察到的SPARCC炎症减少外,非戈替尼还与SPARCC SSS侵蚀的显著减少和早在12周的回填增加有关。

       强直性脊柱炎是一种慢性免疫介导的疾病,以中轴骨骼炎症为特征,早期累及骶髂关节和脊柱。尽管发病时SI关节有侵蚀性改变,但更多晚期包括新骨形成和关节融合。AS与慢性疼痛和渐进性结构改变有关,导致身体功能受损和生活质量下降。MRI是唯一可以直接检测SI关节和脊椎炎症和结构变化的成像手段,因此对AS的早期评估是有用的。ASAS最近更新了SI关节结构MRI病变的定义,包括糜烂、脂肪病变、糜烂腔内脂肪化生(也称为回填)、关节僵硬和非桥接骨芽。侵蚀,包括皮质骨破裂和邻近骨髓基质丢失,是一种常见的结构性病变,在MRI上可以发现,其可靠性与软骨下炎症相当。强直发生在糜烂修复之后,脂肪化生和回填被认为是SI关节强直发展的关键中介。炎症消退后,可以发生脂肪化生--用新组织取代骨髓中的炎性病变。在侵蚀空洞中,这被称为回填。

 

         AS活动期和对两种或两种以上非甾体抗炎药反应不充分或不耐受的成人被随机分为非戈替尼200 mg(n/58)或安慰剂(n/58),每日1次,共12周。在这项特殊分析中,两名独立医师使用加拿大脊柱关节炎研究联盟(SPARCC)骶髂关节结构评分(SSS)对糜烂、回填、脂肪化生和关节僵硬的定义对SI关节的T1加权MRI扫描进行了评估。SPARCC SSS与临床结果改善的相关性也被评估。

       对87例患者(48例非戈替尼,39例安慰剂)的MRI扫描进行了评估。基线时,在任何MRI结构损害类型上,非戈替尼和安慰剂之间没有显着差异。从基线到第12周,与安慰剂组相比,非戈替尼组的SI关节糜烂评分显著降低,回填评分显著增加,强直或脂肪化生的组间差异无显著性。在第12周,SPARCC MRI SI关节炎症评分的改变与糜烂评分呈正相关,而与回填评分呈负相关。

      总而言之,除了先前报道的在Tortuga试验中用非戈替尼在AS中观察到的SPARCC炎症减少外,非戈替尼还与SPARCC SSS侵蚀的显著减少和早在12周的回填增加有关。需要研究来在更大的临床试验中证实这些发现,在这项分析中观察到的结构变化对疾病/强直进展的预后影响值得进一步研究。特别是,结构性病变的早期治疗效果如何可能影响SI关节强直的未来发展、脊柱中的新骨形成,以及对临床和活动结果以及残疾的影响,需要进行调查。

 

文献来源:Maksymowych WP,  Østergaard M,  Landewé R,Impact of filgotinib on sacroiliac joint MRI structural lesions at 12 weeks in patients with active ankylosing spondylitis (TORTUGA trial).Rheumatology (Oxford) 2021 Aug 05

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    2022-09-08 zywlvao
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