Efficacy, Safety, Tolerability, and Serum IgG Trough Levels of Hyaluronidase-Facilitated Subcutaneous Immunoglobulin 10% in US Pediatric Patients with Primary Immunodeficiency Diseases.

IF 7.2 2区 医学 Q1 IMMUNOLOGY Journal of Clinical Immunology Pub Date : 2025-03-14 DOI:10.1007/s10875-025-01862-6
Niraj C Patel, Jolan E Walter, Richard L Wasserman, Arye Rubinstein, Suthida Kankirawatana, Meagan W Shepherd, Erin Greco, Zhaoyang Li, Sharon Russo-Schwarzbaum, Shumyla Saeed-Khawaja, Barbara McCoy, Leman Yel
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引用次数: 0

Abstract

Purpose: To investigate the efficacy, safety, tolerability, and serum IgG trough levels of hyaluronidase-facilitated subcutaneous immunoglobulin (fSCIG) 10% in US pediatric patients with primary immunodeficiency diseases (PIDDs).

Methods: This phase 3, open-label, prospective study (NCT03277313) was conducted at 17 US centers. Eligible patients aged 2 to < 16 years had PIDDs and had received immunoglobulin G (IgG) at a consistent dose for ≥ 3 months before screening. Participants received fSCIG 10% via dose ramp-up for up to 6 weeks (Epoch 1), then every 3-4 weeks for ≤ 3 years (Epoch 2). The primary endpoint was the rate of acute serious bacterial infections (ASBIs).

Results: Data were provided by 44 participants for Epoch 1 (mean ± SD age: 9.0 ± 3.6 years) and 43 (97.7%) for Epoch 2; 34 (77.3%) completed the study. Two ASBIs (both bacterial pneumonia) were reported in one participant with specific antibody deficiency. The mean rate of ASBIs was 0.04 events/participant-year (99% upper confidence interval limit: 0.20), significantly lower than the regulatory-defined threshold of 1.0 (p < 0.001). The mean rate of all infections was 3.12 events/participant-year. Stable mean serum IgG trough levels were maintained during Epoch 2 (10.4, 9.2, and 9.2 g/L at Months 0, 6, and 12, respectively). Most related treatment-emergent adverse events were mild or moderate in severity. No participant developed anti-recombinant human hyaluronidase neutralizing antibodies; 1/44 participants (2.3%) developed binding antibodies.

Conclusion: fSCIG 10% effectively prevented ASBIs in pediatric patients with PIDDs, with a favorable safety profile consistent with previous clinical studies.

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来源期刊
CiteScore
12.20
自引率
9.90%
发文量
218
审稿时长
2 months
期刊介绍: The Journal of Clinical Immunology publishes impactful papers in the realm of human immunology, delving into the diagnosis, pathogenesis, prognosis, or treatment of human diseases. The journal places particular emphasis on primary immunodeficiencies and related diseases, encompassing inborn errors of immunity in a broad sense, their underlying genotypes, and diverse phenotypes. These phenotypes include infection, malignancy, allergy, auto-inflammation, and autoimmunity. We welcome a broad spectrum of studies in this domain, spanning genetic discovery, clinical description, immunologic assessment, diagnostic approaches, prognosis evaluation, and treatment interventions. Case reports are considered if they are genuinely original and accompanied by a concise review of the relevant medical literature, illustrating how the novel case study advances the field. The instructions to authors provide detailed guidance on the four categories of papers accepted by the journal.
期刊最新文献
Efficacy, Safety, Tolerability, and Serum IgG Trough Levels of Hyaluronidase-Facilitated Subcutaneous Immunoglobulin 10% in US Pediatric Patients with Primary Immunodeficiency Diseases. No Association Between HLH-associated Gene Variants and Life-Threatening COVID-19. Clinical Characteristics and Outcomes of Pediatric Cases Presenting with Possible Pulmonary Vasculitis Following COVID-19 Infection. Successful Treatment with Sirolimus of a Patient with a Novel CARD11 Germline Mutation in B-Cell Expansion with Nuclear Factor Kappa B and T-Cell Anergy: Case Report and Literature Review. Bone Marrow CD8 + Abundance Inversely Correlates with Progressive Marrow Fibrosis and Myelodysplastic Evolution in GATA2 Deficiency: Case Report.
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