Evidence map›Paper›PMID 35388471›Full record

Trial reportClinical pharmacology and therapeutics2022

Innovative Randomized Phase I Study and Dosing Regimen Selection to Accelerate and Inform Pivotal COVID-19 Trial of Nirmatrelvir.

Ravi Shankar P Singh, Sima S Toussi, Frances Hackman, Phylinda L Chan, Rohit Rao, Richard Allen, Lien Van Eyck, Sylvester Pawlak, Eugene P Kadar, Frances Clark and 6 more

Open access · bronzeAbstract readClinical Trial, Phase IRandomized Controlled Trial
In one paragraph

Trial report in Clinical pharmacology and therapeutics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed, 4 pooled it
15.1field-weighted citation impact, top 1% 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

76 citing papers in PubMed, 4 syntheses or guidelines pooled it, 153 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Nirmatrelvir combined with ritonavir for preventing and treating COVID-19.The Cochrane database of systematic reviews · 2023
    Pooled it
  4. Nirmatrelvir combined with ritonavir for preventing and treating COVID-19.The Cochrane database of systematic reviews · 2022
    Pooled it
  5. Trial
  6. Virologic Response and Safety of Ibuzatrelvir, A Novel SARS-CoV-2 Antiviral, in Adults With COVID-19.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2025
    Trial
  7. Trial
  8. Trial
  9. Trial
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article

16 more citing papers are in PubMed but not listed here.

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

16 authors at 3 institutions in 3 countries.

Ravi Shankar P SinghPfizer Worldwide Research, Development and Medical, Cambridge, Massachusetts, USA.
Sima S ToussiPfizer Worldwide Research, Development and Medical, Pearl River, New York, USA.
Frances HackmanPfizer Worldwide Research, Development and Medical, Cambridge, UK.
Phylinda L ChanPfizer Global Product Development, Sandwich, UK.
Rohit RaoPfizer Worldwide Research, Development and Medical, Cambridge, Massachusetts, USA.
Richard AllenPfizer Worldwide Research, Development and Medical, Cambridge, Massachusetts, USA.
Lien Van EyckPfizer Clinical Research Unit, Brussels, Belgium.
Sylvester PawlakPfizer Clinical Research Unit, New Haven, Connecticut, USA.
Eugene P KadarPfizer Worldwide Research, Development and Medical, Groton, Connecticut, USA.
Frances ClarkPfizer Worldwide Research, Development and Medical, Groton, Connecticut, USA.
Haihong ShiPfizer Global Product Development, Groton, Connecticut, USA.
Annaliesa S AndersonPfizer Worldwide Research, Development and Medical, Pearl River, New York, USA.
Michael BinksPfizer Worldwide Research, Development and Medical, Cambridge, Massachusetts, USA.
Sandeep MenonPfizer Worldwide Research, Development and Medical, Cambridge, Massachusetts, USA.
Gianluca NucciPfizer Worldwide Research, Development and Medical, Cambridge, Massachusetts, USA.
Arthur BergmanPfizer Worldwide Research, Development and Medical, Cambridge, Massachusetts, USA.
Pfizer (United States) · USPfizer (United Kingdom) · GBPfizer (Belgium) · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Coronavirus disease 2019 (COVID-19) is a continued leading cause of hospitalization and death. Safe, efficacious COVID-19 antivirals are needed urgently. Nirmatrelvir (PF-07321332), the first orally bioavailable, severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) M

Indexed as

COVID-19 Drug TreatmentAntiviral AgentsHumansLactamsLeucineNitrilesProlineRitonavirSARS-CoV-2Antiviral AgentsLactamsLeucinenirmatrelvirNitrilesProlineRitonavir

Identifiers

PMID35388471
PMCPMC9087011
OpenAlexW4225338642

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.