Evidence map›Paper›PMID 34868084›Full record

Trial reportFrontiers in immunology2021

CCR5 Receptor Occupancy Analysis Reveals Increased Peripheral Blood CCR5+CD4+ T Cells Following Treatment With the Anti-CCR5 Antibody Leronlimab.

Xiao L Chang, Helen L Wu, Gabriela M Webb, Meenakshi Tiwary, Colette Hughes, Jason S Reed, Joseph Hwang, Courtney Waytashek, Carla Boyle, Cleiton Pessoa and 11 more

Open access · goldAbstract readClinical Trial, Phase IIRandomized Controlled Trial
In one paragraph

Trial report in Frontiers in immunology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
2.6field-weighted citation impact, top 9% 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

14 citing papers in PubMed, 25 citations in OpenAlex.

  1. Trial
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  8. Phase I study of camrelizumab in patients with advanced solid tumors.Signal transduction and targeted therapy · 2023
    Article
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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

21 authors at 2 institutions in 1 country.

Xiao L ChangVaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, OR, United States.
Helen L WuVaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, OR, United States.
Gabriela M WebbVaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, OR, United States.
Meenakshi TiwaryVaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, OR, United States.
Colette HughesVaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, OR, United States.
Jason S ReedVaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, OR, United States.
Joseph HwangVaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, OR, United States.
Courtney WaytashekVaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, OR, United States.
Carla BoyleVaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, OR, United States.
Cleiton PessoaVaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, OR, United States.
Andrew W SylwesterVaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, OR, United States.
David MorrowVaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, OR, United States.
Karina BelicaVaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, OR, United States.
Miranda FischerOregon National Primate Research Center, Oregon Health and Science University, Portland, OR, United States.
Scott KellyCytoDyn Inc., Vancouver, WA, United States.
Nader PourhassanCytoDyn Inc., Vancouver, WA, United States.
Rachele M BochartOregon National Primate Research Center, Oregon Health and Science University, Portland, OR, United States.
Jeremy SmedleyOregon National Primate Research Center, Oregon Health and Science University, Portland, OR, United States.
Christopher P RecknorCytoDyn Inc., Vancouver, WA, United States.
Scott G HansenVaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, OR, United States.
Jonah B SachaVaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, OR, United States.
Oregon Health & Science University · USOregon National Primate Research Center · US

Funding

Upgrade of confocal microscopy at the Oregon National Primate Research CenterP51OD011092 · OD · OREGON HEALTH & SCIENCE UNIVERSITY · PI Bonnie J. Nagel · 2012 to 2026
$203.9M
A nonhuman primate model of stem cell transplantation to understand determinants of post-transplant SIV clearanceR01AI129703 · NIAID · OREGON HEALTH & SCIENCE UNIVERSITY · PI SACHA, JONAH B. · 2017 to 2025
$7.8M
A Solid-Phase, Long-Acting CCR5 Monoclonal Antibody for HIV TransmissionR01AI154559 · NIAID · OREGON HEALTH & SCIENCE UNIVERSITY · PI SACHA, JONAH B. · 2020 to 2024
$4.8M
Non-canonical epitope presentation and antigen processing by MHC-ER01AI175459 · NIAID · OREGON HEALTH & SCIENCE UNIVERSITY · PI Klaus J Fruh, Jonah B. Sacha · 2023 to 2026
$2.8M
NIAID NIH HHS R01 AI129703NIAID NIH HHS R01 AI154559NIAID NIH HHS R01 AI175459
6 · The paper itself

Abstract

CCR5 plays a central role in infectious disease, host defense, and cancer progression, thereby making it an ideal target for therapeutic development. Notably, CCR5 is the major HIV entry co-receptor, where its surface density correlates with HIV plasma viremia. The level of CCR5 receptor occupancy (RO) achieved by a CCR5-targeting therapeutic is therefore a critical predictor of its efficacy. However, current methods to measure CCR5 RO lack sensitivity, resulting in high background and overcalculation. Here, we report on two independent, flow cytometric methods of calculating CCR5 RO using the anti-CCR5 antibody, Leronlimab. We show that both methods led to comparable CCR5 RO values, with low background on untreated CCR5+CD4+ T cells and sensitive measurements of occupancy on both blood and tissue-resident CD4+ T cells that correlated longitudinally with plasma concentrations in Leronlimab-treated macaques. Using these assays, we found that Leronlimab stabilized cell surface CCR5, leading to an increase in the levels of circulating and tissue-resident CCR5+CD4+ T cells

Indexed as

Antibodies, Monoclonal, HumanizedCD4-Positive T-LymphocytesHIV AntibodiesReceptors, CCR5Simian Acquired Immunodeficiency SyndromeAnimalsCD4 Lymphocyte CountCOVID-19 Drug TreatmentFemaleFlow CytometryHIV InfectionsHumansPrimatesProtein BindingTreatment OutcomeAntibodies, Monoclonal, HumanizedCCR5 protein, humanHIV AntibodiesleronlimabReceptors, CCR5antibodyCCR5CD4flow cytometryHIVreceptor occupancy (RO)

Identifiers

PMID34868084
PMCPMC8640501
OpenAlexW3217530464

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.