Evidence map›Paper›PMID 34290688›Full record

ReviewFrontiers in microbiology2021

QPX7728, An Ultra-Broad-Spectrum B-Lactamase Inhibitor for Intravenous and Oral Therapy: Overview of Biochemical and Microbiological Characteristics.

Olga Lomovskaya, Ruslan Tsivkovski, Dongxu Sun, Raja Reddy, Maxim Totrov, Scott Hecker, David Griffith, Jeffery Loutit, Michael Dudley

Open access · goldAbstract readReview
In one paragraph

Review in Frontiers in microbiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
2.3field-weighted citation impact, top 10% 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

29 citing papers in PubMed, 47 citations in OpenAlex.

  1. Article
  2. Membrane-Focused Strategies AgainstAntibiotics (Basel, Switzerland) · 2026
    Review
  3. Article
  4. [New antimicrobial substances to combat increasing resistance].Innere Medizin (Heidelberg, Germany) · 2026
    Review
  5. Review
  6. Article
  7. Review
  8. Article
  9. Revisiting the Metallo-International journal of microbiology · 2025
    Review
  10. The challenges of difficult-to-treatClinical microbiology reviews · 2024
    Review
  11. Review
  12. Review
  13. Review
  14. Article
  15. Review
  16. Article
  17. Review
  18. Review
  19. Article
  20. Review
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

9 authors at 2 institutions in 1 country.

Olga LomovskayaQpex Biopharma, Inc., San Diego, CA, United States.
Ruslan TsivkovskiQpex Biopharma, Inc., San Diego, CA, United States.
Dongxu SunQpex Biopharma, Inc., San Diego, CA, United States.
Raja ReddyQpex Biopharma, Inc., San Diego, CA, United States.
Maxim TotrovMolsoft, LLC, San Diego, CA, United States.
Scott HeckerQpex Biopharma, Inc., San Diego, CA, United States.
David GriffithQpex Biopharma, Inc., San Diego, CA, United States.
Jeffery LoutitQpex Biopharma, Inc., San Diego, CA, United States.
Michael DudleyQpex Biopharma, Inc., San Diego, CA, United States.
Mapp Biopharmaceutical (United States) · USMolsoft (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

QPX7728 is a novel β-lactamase inhibitor (BLI) that belongs to a class of cyclic boronates. The first member of this class, vaborbactam, is a BLI in the recently approved Vabomere (meropenem-vaborbactam). In this paper we provide the overview of the biochemical, structural and microbiological studies that were recently conducted with QPX7728. We show that QPX7728 is an ultra-broad-spectrum β-lactamase inhibitor with the broadest spectrum of inhibition reported to date in a single BLI molecule; in addition to potent inhibition of clinically important serine β-lactamases, including Class A and D carbapenemases from Enterobacterales and notably, diverse Class D carbapenemases from Acinetobacter, it also inhibits many metallo β-lactamases. Importantly, it is minimally affected by general intrinsic resistance mechanisms such as efflux and porin mutations that impede entry of drugs into gram-negative bacteria. QPX7728 combinations with several intravenous (IV) β-lactam antibiotics shows broad coverage of Enterobacterales,

Indexed as

Acinetobacterbeta-lactamase inhibitorcarbapenemaseCREmetallo β-lactamasePseudomonasQPX7728

Identifiers

PMID34290688
PMCPMC8287861
OpenAlexW3186229437

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.