Evidence map›Paper›PMID 26077261›Full record

SynthesisAntimicrobial agents and chemotherapy2015

Systematic review of mutations in pyrazinamidase associated with pyrazinamide resistance in Mycobacterium tuberculosis clinical isolates.

Sarah M Ramirez-Busby, Faramarz Valafar

Open access · bronzeAbstract readSystematic Review
In one paragraph

Synthesis in Antimicrobial agents and chemotherapy, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
8.5field-weighted citation impact, top 2% 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

58 citing papers in PubMed, 101 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Review
  5. Pyrazinamide susceptibility testing inFrontiers in cellular and infection microbiology · 2026
    Article
  6. Review
  7. Article
  8. The journal of physical chemistry. B · 2025
    Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Resistance to pyrazinamide inJournal of clinical tuberculosis and other mycobacterial diseases · 2024
    Article
  14. Phenotypic and genotypic characterization ofFrontiers in microbiology · 2024
    Article
  15. Review
  16. Pyrazinamide-resistant Tuberculosis Obscured From Common Targeted Molecular Diagnostics.Drug resistance updates : reviews and commentaries in antimicrobial and anticancer chemotherapy · 2023
    Article
  17. Article
  18. Review
  19. Review
  20. Detection of Mutations inCurrent issues in molecular biology · 2022
    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

2 authors at 1 institution in 1 country.

Sarah M Ramirez-BusbyBioinformatics and Medical Informatics Research Center, San Diego State University, San Diego, California, USA.
Faramarz ValafarBioinformatics and Medical Informatics Research Center, San Diego State University, San Diego, California, USA faramarz@sciences.sdsu.edu.
San Diego State University · US

Funding

Evolutionary and Functional Significance of Novel Mutations in MDR-XDR TBR01AI105185 · NIAID · SAN DIEGO STATE UNIVERSITY · PI VALAFAR, FARAMARZ · 2013 to 2021
$5.3M
NIAID NIH HHS R01 AI105185NIAID NIH HHS R01AI105185
6 · The paper itself

Abstract

Pyrazinamide (PZA) is an important first-line drug in the treatment of tuberculosis (TB) and of significant interest to the HIV-infected community due to the prevalence of TB-HIV coinfection in some regions of the world. The mechanism of resistance to PZA is unlike that of any other anti-TB drug. The gene pncA, encoding pyrazinamidase (PZase), is associated with resistance to PZA. However, because single mutations in PZase have a low prevalence, the individual sensitivities are low. Hundreds of distinct mutations in the enzyme have been associated with resistance, while some only appear in susceptible isolates. This makes interpretation of molecular testing difficult and often leads to the simplification that any PZase mutation causes resistance. This systematic review reports a comprehensive global list of mutations observed in PZase and its promoter region in clinical strains, their phenotypic association, their global frequencies and diversity, the method of phenotypic determination, their MIC values when given, and the method of MIC determination and assesses the strength of the association between mutations and phenotypic resistance to PZA. In this systematic review, we report global statistics for 641 mutations in 171 (of 187) codons from 2,760 resistant strains and 96 mutations from 3,329 susceptible strains reported in 61 studies. For diagnostics, individual mutations (or any subset) were not sufficiently sensitive. Assuming similar error profiles of the 5 phenotyping platforms included in this study, the entire enzyme and its promoter provide a combined estimated sensitivity of 83%. This review highlights the need for identification of an alternative mechanism(s) of resistance, at least for the unexplained 17% of cases.

Indexed as

AmidohydrolasesAntitubercular AgentsDrug Resistance, BacterialMicrobial Sensitivity TestsMutationMycobacterium tuberculosisPyrazinamideAmidohydrolasesAntitubercular AgentsPyrazinamidepyrazinamide deamidase

Identifiers

PMID26077261
PMCPMC4538510
OpenAlexW1853206387

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.