Evidence map›Paper›PMID 20439617›Full record

SynthesisAntimicrobial agents and chemotherapy2010

Clinical and toxicodynamic evidence that high-dose pyrazinamide is not more hepatotoxic than the low doses currently used.

Jotam G Pasipanodya, Tawanda Gumbo

Open access · greenAbstract readMeta-Analysis
In one paragraph

Synthesis in Antimicrobial agents and chemotherapy, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 1 pooled it
7.7field-weighted citation impact, top 3% 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

36 citing papers in PubMed, 1 synthesis or guideline pooled it, 68 citations in OpenAlex.

  1. Guideline
  2. Trial
  3. Optimising pyrazinamide for the treatment of tuberculosis.The European respiratory journal · 2021
    Trial
  4. Article
  5. Article
  6. Article
  7. A Balancing Act: Finding the Right Dose of Pyrazinamide to Treat Tuberculosis.American journal of respiratory and critical care medicine · 2024
    Article
  8. Role of therapeutic drug monitoring in the treatment of multi-drug resistant tuberculosis.Journal of clinical tuberculosis and other mycobacterial diseases · 2024
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  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

2 authors at 1 institution in 1 country.

Jotam G PasipanodyaUT Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390-9113, USA.
Tawanda Gumbo
The University of Texas Southwestern Medical Center · US

Funding

Efflux pump inhibitors to reduce duration of antituberculosis therapyDP2OD001886 · OD · UT SOUTHWESTERN MEDICAL CENTER · PI GUMBO, TAWANDA · 2007 to 2007
$2.4M
PK-PD of combination antituberculosis therapy for suppression of drug-resistanceR01AI079497 · NIAID · UT SOUTHWESTERN MEDICAL CENTER · PI GUMBO, TAWANDA · 2008 to 2011
$2.3M
NIAID NIH HHS R01 AI079497NIAID NIH HHS R01AI079497NIH HHS DP2 OD001886
6 · The paper itself

Abstract

Antimicrobial pharmacokinetic-pharmacodynamic studies suggest that pyrazinamide doses higher than those currently recommended may be more efficacious. However, high pyrazinamide doses are believed to be hepatotoxic. Searches for clinical trials in MEDLINE, EBSCOHOST, and the Cochrane Controlled Trial Register were made. Studies that employed pyrazinamide dose scheduling and pharmacokinetic analysis design were examined. Population pharmacokinetic modeling methods were utilized to identify parameters associated with toxicity. At an equivalent area under the concentration-time curve, the time that concentration persisted above some thresholds was associated with overall adverse events (P = 0.032), arthralgia (P = 0.089), and an elevated serum aspartate aminotransferase level at 3 months (P = 0.067). Next, a meta-analysis was utilized to compare rates of adverse events (i) between different pyrazinamide doses, (ii) between different dosing schedules, and (iii) between pyrazinamide-containing and non-pyrazinamide-containing antituberculosis regimens. The 29 studies selected were heterogeneous (Cochrane Q statistic P value of <0.001; I(2) of >95%). For the once-a-day dosing schedule, arthralgia was dose dependent (r(2) = 0.996). However, arthralgia was less common with intermittent dosing, consistent with the time concentration persisted above the threshold. Arthralgia was generally clinically inconsequential. The frequencies of hepatotoxicity were 0.057 (95% confidence interval [CI], 0.021 to 0.141) for pyrazinamide monotherapy, 0.044 (CI, 0.033 to 0.059) for pyrazinamide-containing combination regimens, and 0.040 (CI, 0.023 to 0.040) for non-pyrazinamide-containing combination regimens. The frequencies of hepatotoxicity were 0.042 (CI, 0.026 to 0.067) for 30 mg/kg of body weight, 0.055 (CI, 0.031 to 0.094) at 40 mg/kg, and 0.098 (CI, 0.047 to 0.193) at 60 mg/kg of pyrazinamide. Thus, high-dose pyrazinamide did not significantly increase hepatotoxicity. This suggests that a considerable portion of hepatotoxicity rates may be idiosyncratic.

Indexed as

Antitubercular AgentsControlled Clinical Trials as TopicDrug Administration ScheduleHumansLiverPyrazinamideAntitubercular AgentsPyrazinamide

Identifiers

PMID20439617
PMCPMC2897291
OpenAlexW2163227462

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.