Chugai Pharmaceutical Co., Ltd., Tokyo, Japan.
Mod Rheumatol. 2022 Jul 1;32(4):755-760. doi: 10.1093/mr/roab111.
Limited information is available on patients with systemic sclerosis (SSc) or SSc-associated interstitial lung disease (SSc-ILD) receiving mycophenolate mofetil (MMF) in Japan. The dose, treatment duration, and patient characteristics of SSc and SSc-ILD patients receiving MMF were investigated.
We used data from a Japanese hospital claims database (2008-2020).
Data on 486 SSc patients ≥18 years old receiving MMF were captured; 314 had SSc complicated with ILD. The most common initial daily doses were 1000 mg (SSc, 39.5%; SSc-ILD, 38.1%) and 500 mg (SSc, 36.6%; SSc-ILD, 34.6%). The most common maximum daily doses were 1000 mg (SSc, 33.3%; SSc-ILD, 34.9%), 1500 mg (SSc, 24.4%; SSc-ILD, 23.1%), and 2000 mg (SSc, 23.8%; SSc-ILD, 24.4%). Doses ranged from 250 to 3000 mg/day and were similar for SSc and SSc-ILD patients. Over 27% of patients received treatment for >1 year. There was a gradual decrease in steroid doses during MMF treatment.
Our study suggests that the off-label use of MMF for SSc and SSc-ILD has been increasing annually since 2015 in Japan. The doses used in patients with SSc and SSc-ILD were similar to the approved doses of MMF for lupus nephritis in Japan.
关于在日本接受吗替麦考酚酯(MMF)治疗的系统性硬化症(SSc)或 SSc 相关间质性肺病(SSc-ILD)患者,相关信息有限。本研究调查了接受 MMF 治疗的 SSc 和 SSc-ILD 患者的剂量、治疗持续时间和患者特征。
我们使用了来自日本医院索赔数据库(2008-2020 年)的数据。
共纳入 486 例≥18 岁接受 MMF 治疗的 SSc 患者,其中 314 例 SSc 合并 ILD。最常见的初始日剂量为 1000mg(SSc,39.5%;SSc-ILD,38.1%)和 500mg(SSc,36.6%;SSc-ILD,34.6%)。最常见的最大日剂量为 1000mg(SSc,33.3%;SSc-ILD,34.9%)、1500mg(SSc,24.4%;SSc-ILD,23.1%)和 2000mg(SSc,23.8%;SSc-ILD,24.4%)。剂量范围为 250-3000mg/天,SSc 和 SSc-ILD 患者的剂量相似。超过 27%的患者接受治疗时间超过 1 年。在 MMF 治疗期间,皮质类固醇剂量逐渐下降。
本研究表明,自 2015 年以来,日本每年接受 MMF 治疗 SSc 和 SSc-ILD 的人数呈上升趋势。SSc 和 SSc-ILD 患者使用的剂量与日本批准的 MMF 治疗狼疮性肾炎的剂量相似。