Cited by 186Cancer Immunotherapy and BiomarkersMonoclonal and Polyclonal Antibodies ResearchT-cell and B-cell Immunology

Design and Efficacy of a Monovalent Bispecific PD-1/CTLA4 Antibody That Enhances CTLA4 Blockade on PD-1+ Activated T Cells

Dovedi, Simon J., Elder, Matthew J., Yang, Chunning, Sitnikova, Suzanne I., Irving, Lorraine, Hansen, Anna, Hair, James, Jones, Des C. +27 more·2021·Cancer Discovery

Published version of a preprint

Abstract

The clinical benefit of PD-1 blockade can be improved by combination with CTLA4 inhibition but is commensurate with significant immune-related adverse events suboptimally limiting the doses of anti-CTLA4 mAb that can be used. MEDI5752 is a monovalent bispecific antibody designed to suppress the PD-1 pathway and provide modulated CTLA4 inhibition favoring enhanced blockade on PD-1+ activated T cells. We show that MEDI5752 preferentially saturates CTLA4 on PD-1+ T cells versus PD-1− T cells, reducing the dose required to elicit IL2 secretion. Unlike conventional PD-1/CTLA4 mAbs, MEDI5752 leads to the rapid internalization and degradation of PD-1. Moreover, we show that MEDI5752 preferentially localizes and accumulates in tumors providing enhanced activity when compared with a combination of mAbs targeting PD-1 and CTLA4 in vivo. Following treatment with MEDI5752, robust partial responses were observed in two patients with advanced solid tumors. MEDI5752 represents a novel immunotherapy engineered to preferentially inhibit CTLA4 on PD-1+ T cells. Significance: The unique characteristics of MEDI5752 represent a novel immunotherapy engineered to direct CTLA4 inhibition to PD-1+ T cells with the potential for differentiated activity when compared with current conventional mAb combination strategies targeting PD-1 and CTLA4. This molecule therefore represents a step forward in the rational design of cancer immunotherapy. See related commentary by Burton and Tawbi, p. 1008. This article is highlighted in the In This Issue feature, p. 995

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Crossref · 10.1158/2159-8290.cd-20-1445

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  • Numerous bispecific antibodies have been developed, including CTLA-4 × PD-L1 (KN046), CTLA-4 × PD-1 (MGD019 and MEDI5752), LAG-3 × PD-L1 (IBI323), LAG-3 × PD-1 (Tebotelimab), TIM-3 × PD-L1 (LY3415244), TIM-3 × PD-1, and TIGIT×PD-L1.

    “Numerous bispecific antibodies have been developed, including CTLA-4 × PD-L1 (KN046) [281], CTLA-4 × PD-1 (MGD019 and MEDI5752) [282, 283], LAG-3 × PD-L1 (IBI323) [284], LAG-3 × PD-1 (Tebotelimab) [285], TIM-3 × PD-L1 (LY3415244) [286], TIM-3 × PD-1 [305], TIGIT×PD-L1 [287].”

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Authors
Dovedi, S. J., Elder, M. J., Yang, C., Sitnikova, S. I., Irving, L., Hansen, A., Hair, J., Jones, D. C., Hasani, S., Wang, B., Im, S.-A., Tran, B., Subramaniam, D. S., Gainer, S. D., Vashisht, K., Lewis, A., Jin, X., Kentner, S., Mulgrew, K., Wang, Y., Overstreet, M. G., Dodgson, J., Wu, Y., Palazon, A., Morrow, M., Rainey, G. J., Browne, G. J., Neal, F., Murray, T. V., Toloczko, A. D., Dall'Acqua, W., Achour, I., Freeman, D. J., Wilkinson, R. W., & Mazor, Y.
Affiliations
  • 1Early Oncology R&D, AstraZeneca.
  • 2Antibody Discovery and Protein Engineering, R&D, AstraZeneca.
  • 3Translational Science and Experimental Medicine, Respiratory and Immunology (RI), Biopharmaceuticals R&D, AstraZeneca.
  • Seoul National University (KR)
  • Peter MacCallum Cancer Centre (AU)
Venue
Cancer Discovery
Published
2021-01-08
Volume
11
Issue
5
Pages
1100-1117
ISSN
  • 2159-8274 (ISSN-L)
  • 2159-8290
OpenAlex
W3121059150
Cited by
186
References
63
Citations by year
2026: 20 · 2025: 35 · 2024: 48 · 2023: 38 · 2022: 31 · 2021: 14
FWCI
11.91
Type
journal article
Language
en
Open access
closed
Locations
  • Cancer Discovery (publishedVersion)
  • PubMed (publishedVersion)
  • Seoul National University Open Repository (Seoul National University) (submittedVersion)
Funders
AstraZeneca
Topics
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Monoclonal and Polyclonal Antibodies Research
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
bispecific antibodies, PD-1, CTLA-4, immune checkpoint blockade, PD-1+ T cells, tumor-infiltrating lymphocytes, IL-2 secretion, tumor localization, solid tumors, cancer immunotherapy, immune-related adverse events
MeSH terms
Adenocarcinoma, Humans, Immunotherapy, Kidney Neoplasms, Male, Middle Aged, Stomach Neoplasms, T-Lymphocytes, Adenocarcinoma, Clear Cell, CTLA-4 Antigen, Programmed Cell Death 1 Receptor, Antibodies, Monoclonal, Humanized

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