Evidence map›Paper›PMID 21078950›Full record

Trial reportAntimicrobial agents and chemotherapy2011

Biomarker-assisted dose selection for safety and efficacy in early development of PNU-100480 for tuberculosis.

Robert S Wallis, Wesley Jakubiec, Vikas Kumar, Gabriella Bedarida, Annette Silvia, Darcy Paige, Tong Zhu, Mark Mitton-Fry, Lynn Ladutko, Sheldon Campbell and 1 more

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Antimicrobial agents and chemotherapy, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 2 pooled it
5.4field-weighted citation impact, top 4% 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

52 citing papers in PubMed, 2 syntheses or guidelines pooled it, 128 citations in OpenAlex.

  1. Pooled it
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  16. Microorganisms · 2022
    Review
  17. Article
  18. Novel oxazolidinones harbor potentFrontiers in medicine · 2022
    Article
  19. The pipeline of new molecules and regimens against drug-resistant tuberculosis.Journal of clinical tuberculosis and other mycobacterial diseases · 2021
    Review
  20. Antimicrobial agents and chemotherapy · 2021
    Article
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

11 authors at 3 institutions in 1 country.

Robert S WallisPfizer, Groton-New London, CT 06320, USA. robert.wallis@pfizer.com
Wesley Jakubiec
Vikas Kumar
Gabriella Bedarida
Annette Silvia
Darcy Paige
Tong Zhu
Mark Mitton-Fry
Lynn Ladutko
Sheldon Campbell
Paul F Miller
Pfizer (United States) · USVA Connecticut Healthcare System · USConnecticut Health Foundation · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Tuberculosis is a serious global health threat for which new treatments are urgently needed. This study examined the safety, tolerability, pharmacokinetics, and pharmacodynamics of multiple ascending doses of the oxazolidinone PNU-100480 in healthy volunteers, using biomarkers for safety and efficacy. Subjects were randomly assigned to PNU-100480 or placebo (4:1) at schedules of 100, 300, or 600 mg twice daily or 1,200 mg daily for 14 days or a schedule of 600 mg twice daily for 28 days to which pyrazinamide was added on days 27 and 28. A sixth cohort was given linezolid at 300 mg daily for 4 days. Signs, symptoms, and routine safety tests were monitored. Bactericidal activity against Mycobacterium tuberculosis was measured in ex vivo whole-blood culture. Plasma drug and metabolite concentrations were compared to the levels required for inhibition of M. tuberculosis growth and 50% inhibition of mitochondrial protein synthesis. All doses were safe and well tolerated. There were no hematologic or other safety signals during 28 days of dosing at 600 mg twice daily. Plasma concentrations of PNU-100480 and metabolites at this dose remained below those required for 50% inhibition of mitochondrial protein synthesis. Cumulative whole-blood bactericidal activity of PNU-100480 at this dose (-0.316 ± 0.04 log) was superior to the activities of all other doses tested (P < 0.001) and was significantly augmented by pyrazinamide (-0.420 ± 0.06 log) (P = 0.002). In conclusion, PNU-100480 was safe and well tolerated at all tested doses. Further studies in patients with tuberculosis are warranted. Biomarkers can accelerate early development of new tuberculosis treatments.

Indexed as

Serum Bactericidal TestAcetamidesAdolescentAdultAnimalsAntitubercular AgentsArea Under CurveDose-Response Relationship, DrugDrug Administration ScheduleHumansLinezolidMicrobial Sensitivity TestsMiddle AgedMycobacterium tuberculosisOxazolidinonesPyrazinamideAcetamidesAntitubercular AgentsLinezolidOxazolidinonesPNU-100480Pyrazinamide

Identifiers

PMID21078950
PMCPMC3028776
OpenAlexW1985895918

What OpenQuestion holds

Textmetadata
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.