期刊
GENETICS IN MEDICINE
卷 14, 期 1, 页码 135-142出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/gim.2011.4
关键词
immune tolerance; methotrexate; Pompe disease; rituximab
资金
- Genzyme
- PTC Therapeutics
- Leal Foundation
- SMA
- National Skeletal Muscle Research Center
- Direct For Social, Behav & Economic Scie [0827436] Funding Source: National Science Foundation
- NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE [U54NS065768] Funding Source: NIH RePORTER
Purpose: Infantile Pompe disease resulting from a deficiency of lysosomal acid alpha-glucosidase (GAA) requires enzyme replacement therapy (ERT) with recombinant human GAA (rhGAA). Cross-reactive immunologic material negative (CRIM-negative) Pompe patients develop high-titer antibody to the rhGAA and do poorly. We describe successful tolerance induction in CRIM-negative patients. Methods: Two CRIM-negative patients with preexisting anti-GAA antibodies were treated therapeutically with rituximab, methotrexate, and gammaglobulins. Two additional CRIM-negative patients were treated prophylactically with a short course of rituximab and methotrexate, in parallel with initiating rhGAA. Results: In both patients treated therapeutically, anti-rhGAA was eliminated after 3 and 19 months. All four patients are immune tolerant to rhGAA, off immune therapy, showing B-cell recovery while continuing to receive ERT at ages 36 and 56 months (therapeutic) and 18 and 35 months (prophylactic). All patients show clinical response to ERT, in stark contrast to the rapid deterioration of their nontolerized CRIM-negative counterparts. Conclusion: The combination of rituximab with methotrexate +/- intravenous gammaglobulins (IVIG) is an option for tolerance induction of CRIM-negative Pompe to ERT when instituted in the naive setting or following antibody development. It should be considered in other conditions in which antibody response to the therapeutic protein elicits robust antibody response that interferes with product efficacy.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据