Evidence map›Paper›PMID 38942778›Full record

ArticleNature communications2024

A unifying model to explain frequent SARS-CoV-2 rebound after nirmatrelvir treatment and limited prophylactic efficacy.

Shadisadat Esmaeili, Katherine Owens, Jessica Wagoner, Stephen J Polyak, Judith M White, Joshua T Schiffer

Abstract read
In one paragraph

Article in Nature communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
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

19 citing papers in PubMed.

  1. Trial
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  9. Viral Dynamic Models During COVID-19: Are We Ready for the Next Pandemic?CPT: pharmacometrics & systems pharmacology · 2025
    Review
  10. Article
  11. 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

6 authors.

Shadisadat Esmaeili *Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA, USA. sesmaeil@fredhutch.org.ORCID 0000-0002-3411-3834
Katherine Owens *Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA, USA.ORCID 0000-0002-5695-0203
Jessica WagonerDepartment of Laboratory Medicine & Pathology, University of Washington, Seattle, WA, USA.
Stephen J PolyakDepartment of Laboratory Medicine & Pathology, University of Washington, Seattle, WA, USA.
Judith M WhiteDepartment of Cell Biology, University of Virginia, Charlottesville, VA, USA.ORCID 0000-0002-0532-996X
Joshua T SchifferVaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA, USA.ORCID 0000-0002-2598-1621

Funding

Immunoprotective Properties of Tissue-resident Memory T Cells in Mice and Humans within Mucosal SitesR01AI121129 · NIAID · FRED HUTCHINSON CANCER RESEARCH CENTER · PI LUND, JENNIFER M, PRLIC, MARTIN · 2016 to 2022
$5.0M
Training Program in Infectious Diseases in the Immunocompromised HostT32AI118690 · NIAID · FRED HUTCHINSON CANCER RESEARCH CENTER · PI BOECKH, MICHAEL J · 2016 to 2025
$4.0M
Development of an Oral Pan-Coronavirus Drug CocktailR01AI177512 · NIAID · UNIVERSITY OF WASHINGTON · PI STEPHEN J. POLYAK, Joshua Tisdell Schiffer · 2023 to 2026
$2.7M
NIAID NIH HHS R01 AI177512NIAID NIH HHS T32 AI118690U.S. Department of Health & Human Services | NIH | National Institute of Allergy and Infectious Diseases (NIAID) R01AI121129U.S. Department of Health & Human Services | NIH | National Institute of Allergy and Infectious Diseases (NIAID) R01AI169427U.S. Department of Health & Human Services | NIH | National Institute of Allergy and Infectious Diseases (NIAID) R01AI177512
6 · The paper itself

Abstract

In a pivotal trial (EPIC-HR), a 5-day course of oral ritonavir-boosted nirmatrelvir, given early during symptomatic SARS-CoV-2 infection (within three days of symptoms onset), decreased hospitalization and death by 89.1% and nasal viral load by 0.87 log relative to placebo in high-risk individuals. Yet, nirmatrelvir/ritonavir failed as post-exposure prophylaxis in a trial, and frequent viral rebound has been observed in subsequent cohorts. We develop a mathematical model capturing viral-immune dynamics and nirmatrelvir pharmacokinetics that recapitulates viral loads from this and another clinical trial (PLATCOV). Our results suggest that nirmatrelvir's in vivo potency is significantly lower than in vitro assays predict. According to our model, a maximally potent agent would reduce the viral load by approximately 3.5 logs relative to placebo at 5 days. The model identifies that earlier initiation and shorter treatment duration are key predictors of post-treatment rebound. Extension of treatment to 10 days for Omicron variant infection in vaccinated individuals, rather than increasing dose or dosing frequency, is predicted to lower the incidence of viral rebound significantly.

Indexed as

Antiviral AgentsCOVID-19COVID-19 Drug TreatmentRitonavirSARS-CoV-2Viral LoadHumansIndazolesLactamsLeucineModels, TheoreticalNitrilesPost-Exposure ProphylaxisProlineAntiviral AgentsIndazolesLactamsLeucinenirmatrelvirNitrilesProlineRitonavir

Identifiers

PMID38942778
PMCPMC11213957

What OpenQuestion holds

Textmetadata
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.