NYMC Faculty Publications

Title

An Immune Tolerance Approach Using Transient Low-Dose Methotrexate in the ERT-Naive Setting of Patients Treated with a Therapeutic Protein: Experience in Infantile-Onset Pompe Disease

Document Type

Article

Publication Date

April 2019

Department

Pediatrics

Abstract

PURPOSE: To investigate immune tolerance induction with transient low-dose methotrexate (TLD-MTX) initiated with recombinant human acid alpha-glucosidase (rhGAA), in treatment-naive cross-reactive immunologic material (CRIM)-positive infantile-onset Pompe disease (IOPD) patients. METHODS: Newly diagnosed IOPD patients received subcutaneous or oral 0.4 mg/kg TLD-MTX for 3 cycles (3 doses/cycle) with the first 3 rhGAA infusions. Anti-rhGAA IgG titers, classified as high-sustained (HSAT; >/=51,200, >/=2 times after 6 months), sustained intermediate (SIT; >/=12,800 and <51,200 within 12 months), or low (LT;

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