Evidence map›Paper›PMID 36112781›Full record

ArticleCancer research2022

A Probody T Cell-Engaging Bispecific Antibody Targeting EGFR and CD3 Inhibits Colon Cancer Growth with Limited Toxicity.

Leila M Boustany, Sherry L LaPorte, Laurie Wong, Clayton White, Veena Vinod, Joel Shen, Wendy Yu, David Koditek, Michael B Winter, Stephen J Moore and 10 more

Open access · hybridAbstract read
In one paragraph

Article in Cancer research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
5.8field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

43 citing papers in PubMed, 49 citations in OpenAlex.

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  4. De novo design of protease-activatable cytokine prodrugs.bioRxiv : the preprint server for biology · 2026
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  13. CD147/Basigin: From Integrative Molecular Hub to Translational Therapeutic Target.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

20 authors at 1 institution in 1 country.

Leila M BoustanyCytomX Therapeutics, Inc, South San Francisco, California.ORCID 0000-0002-8377-5797
Sherry L LaPorteCytomX Therapeutics, Inc, South San Francisco, California.ORCID 0000-0002-4388-3099
Laurie WongCytomX Therapeutics, Inc, South San Francisco, California.ORCID 0000-0002-6138-1551
Clayton WhiteCytomX Therapeutics, Inc, South San Francisco, California.ORCID 0000-0002-4706-6424
Veena VinodCytomX Therapeutics, Inc, South San Francisco, California.ORCID 0000-0001-9503-354X
Joel ShenCytomX Therapeutics, Inc, South San Francisco, California.ORCID 0000-0002-6197-2343
Wendy YuCytomX Therapeutics, Inc, South San Francisco, California.ORCID 0000-0001-8835-8979
David KoditekCytomX Therapeutics, Inc, South San Francisco, California.ORCID 0000-0002-9222-9333
Stephen J MooreCytomX Therapeutics, Inc, South San Francisco, California.ORCID 0000-0001-6166-7317
Li MeiCytomX Therapeutics, Inc, South San Francisco, California.ORCID 0000-0002-8830-5209
Linnea DiepCytomX Therapeutics, Inc, South San Francisco, California.ORCID 0000-0003-2358-3408
Shouchun LiuCytomX Therapeutics, Inc, South San Francisco, California.ORCID 0000-0001-6154-1642
Olga VasiljevaCytomX Therapeutics, Inc, South San Francisco, California.ORCID 0000-0003-3648-5460
Jim WestCytomX Therapeutics, Inc, South San Francisco, California.ORCID 0000-0001-6262-4554
Jennifer RichardsonCytomX Therapeutics, Inc, South San Francisco, California.ORCID 0000-0002-7739-5165
Bryan IrvingCytomX Therapeutics, Inc, South San Francisco, California.ORCID 0000-0002-5093-013X
Marcia BelvinCytomX Therapeutics, Inc, South San Francisco, California.ORCID 0000-0002-4447-9629
W Michael KavanaughCytomX Therapeutics, Inc, South San Francisco, California.ORCID 0000-0002-3938-0608
CytomX Therapeutics (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

T cell-engaging bispecific antibodies (TCB) are highly potent therapeutics that can recruit and activate cytotoxic T cells to stimulate an antitumor immune response. However, the development of TCBs against solid tumors has been limited by significant on-target toxicity to normal tissues. Probody therapeutics have been developed as a novel class of recombinant, protease-activated antibody prodrugs that are "masked" to reduce antigen binding in healthy tissues but can become conditionally unmasked by proteases that are preferentially active in the tumor microenvironment (TME). Here, we describe the preclinical efficacy and safety of CI107, a Probody TCB targeting EGFR and CD3. In vitro, the protease-activated, unmasked CI107 effectively bound EGFR and CD3 expressed on the surface of cells and induced T-cell activation, cytokine release, and cytotoxicity toward tumor cells. In contrast, dually masked CI107 displayed a >500-fold reduction in antigen binding and >15,000-fold reduction in cytotoxic activity. In vivo, CI107 potently induced dose-dependent tumor regression of established colon cancer xenografts in mice engrafted with human peripheral blood mononuclear cells. Furthermore, the MTD of CI107 in cynomolgus monkeys was more than 60-fold higher than that of the unmasked TCB, and much lower levels of toxicity were observed in animals receiving CI107. Therefore, by localizing activity to the TME and thus limiting toxicity to normal tissues, this Probody TCB demonstrates the potential to expand clinical opportunities for TCBs as effective anticancer therapies for solid tumor indications. SIGNIFICANCE: A conditionally active EGFR-CD3 T cell-engaging Probody therapeutic expands the safety window of bispecific antibodies while maintaining efficacy in preclinical solid tumor settings.

Indexed as

Antibodies, BispecificCD3 ComplexColonic NeoplasmsErbB ReceptorsAnimalsHumansLeukocytes, MononuclearMicePeptide HydrolasesTumor MicroenvironmentXenograft Model Antitumor AssaysAntibodies, BispecificCD3 ComplexEGFR protein, humanErbB ReceptorsPeptide Hydrolases

Identifiers

PMID36112781
PMCPMC9664135
OpenAlexW4296078133

What OpenQuestion holds

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LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.