Enhanced Epidermal Antigen Specific Immunotherapy Trial -1 (EE-ASI-1): A Phase 1a Study of Gold Nanoparticles Administered Intradermally by Microneedles to Deliver Immunotherapy With a Proinsulin Derived Peptide in Type 1 Diabetes

The study is a two centre, open-label, uncontrolled single group phase 1A study of C19-A3 GNP peptide (10 μg peptide equivalent content) administered via Nanopass microneedles every 28 days for 8 weeks (3 doses), with follow-up for 6 weeks (14 weeks in total from first dose). Treatment will be given into the arm at a volume of 50ul.
No blinding or randomisation will be performed. In keeping with standard phase 1 study designs, no placebo or control group is included as the primary aim is to establish whether there are any major unexpected safety issues in the use of this IMP for the first time in man. 8 subjects will be recruited at 2 centres: Cardiff, UK and Linköping, Sweden.

开始日期2016-09-29

申办/合作机构

University of Cardiff

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2022-01-01·Immunotherapy Advances

Safety of the use of gold nanoparticles conjugated with proinsulin peptide and administered by hollow microneedles as an immunotherapy in type 1 diabetes

Article

作者: Levin, Y ; Barrientos, A ; Casas, R ; Ingram, J R ; Perera, I ; Chowdhury, M M U ; Wong, F S ; Birchall, J C ; McAteer, M A ; May, K ; Dul, M ; Ludvigsson, J ; Dayan, C ; Tatovic, D ; Holland, G ; Stenson, R ; Coulman, S A ; Luzio, S D ; Barry, J ; Dunseath, G ; Cheung, W Y ; Alhadj Ali, M ; Kochba, E ; von Ruhland, C ; Rodríguez Terradillos, K ; Howell, A

AbstractAntigen-specific immunotherapy is an immunomodulatory strategy for autoimmune diseases, such as type 1 diabetes, in which patients are treated with autoantigens to promote immune tolerance, stop autoimmune β-cell destruction and prevent permanent dependence on exogenous insulin. In this study, human proinsulin peptide C19-A3 (known for its positive safety profile) was conjugated to ultrasmall gold nanoparticles (GNPs), an attractive drug delivery platform due to the potential anti-inflammatory properties of gold. We hypothesised that microneedle intradermal delivery of C19-A3 GNP may improve peptide pharmacokinetics and induce tolerogenic immunomodulation and proceeded to evaluate its safety and feasibility in a first-in-human trial. Allowing for the limitation of the small number of participants, intradermal administration of C19-A3 GNP appears safe and well tolerated in participants with type 1 diabetes. The associated prolonged skin retention of C19-A3 GNP after intradermal administration offers a number of possibilities to enhance its tolerogenic potential, which should be explored in future studies

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