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First-in-human, double-blind, randomized phase 1b study of peptide immunotherapy IMCY-0098 in new-onset type 1 diabetes

Van Rampelbergh, Jean, Achenbach, Peter, Leslie, Richard David, Ali, Mohammad Alhadj, Dayan, Colin ORCID:, Keymeulen, Bart, Owen, Katharine R., Kindermans, Martin, Parmentier, Frédéric, Carlier, Vincent, Ahangarani, Roxana R., Gebruers, Evelien, Bovy, Nicolas, Vanderelst, Luc, Van Mechelen, Marcelle, Vandepapelière, Pierre and Boitard, Christian 2023. First-in-human, double-blind, randomized phase 1b study of peptide immunotherapy IMCY-0098 in new-onset type 1 diabetes. BMC Medicine 21 (1) , 190. 10.1186/s12916-023-02900-z

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: Background : Type 1 diabetes (T1D) is a CD4+ T cell-driven autoimmune disease characterized by the destruction of insulin-producing pancreatic β-cells by CD8+ T cells. Achieving glycemic targets in T1D remains challenging in clinical practice; new treatments aim to halt autoimmunity and prolong β-cell survival. IMCY-0098 is a peptide derived from human proinsulin that contains a thiol-disulfide oxidoreductase motif at the N-terminus and was developed to halt disease progression by promoting the specific elimination of pathogenic T cells. Methods: This first-in-human, 24-week, double-blind phase 1b study evaluated the safety of three dosages of IMCY-0098 in adults diagnosed with T1D < 6 months before study start. Forty-one participants were randomized to receive four bi-weekly injections of placebo or increasing doses of IMCY-0098 (dose groups A/B/C received 50/150/450 μg for priming followed by three further administrations of 25/75/225 μg, respectively). Multiple T1D-related clinical parameters were also assessed to monitor disease progression and inform future development. Long-term follow-up to 48 weeks was also conducted in a subset of patients. Results: Treatment with IMCY-0098 was well tolerated with no systemic reactions; a total of 315 adverse events (AEs) were reported in 40 patients (97.6%) and were related to study treatment in 29 patients (68.3%). AEs were generally mild; no AE led to discontinuation of the study or death. No significant decline in C-peptide was noted from baseline to Week 24 for dose A, B, C, or placebo (mean change − 0.108, − 0.041, − 0.040, and − 0.012, respectively), suggesting no disease progression. Conclusions: Promising safety profile and preliminary clinical response data support the design of a phase 2 study of IMCY-0098 in patients with recent-onset T1D. Trial registration: IMCY-T1D-001: NCT03272269; EudraCT: 2016–003514-27; and IMCY-T1D-002: NCT04190693; EudraCT: 2018–003728-35.

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Medicine
Additional Information: License information from Publisher: LICENSE 1: URL:, Type: open-access
Publisher: BioMed Central
ISSN: 1741-7015
Date of First Compliant Deposit: 25 May 2023
Date of Acceptance: 10 May 2023
Last Modified: 26 May 2023 06:19

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