Evidence map›Paper›PMID 35852584›Full record

SynthesisEuropean journal of clinical pharmacology2022

Influence of N-acetyltransferase 2 (NAT2) genotype/single nucleotide polymorphisms on clearance of isoniazid in tuberculosis patients: a systematic review of population pharmacokinetic models.

Levin Thomas, Arun Prasath Raju, Chaithra, Sonal Sekhar M, Muralidhar Varma, Kavitha Saravu, Mithu Banerjee, Chidananda Sanju Sv, Surulivelrajan Mallayasamy, Mahadev Rao

Open access · hybridAbstract readSystematic Review
In one paragraph

Synthesis in European journal of clinical pharmacology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 5 pooled it
2.0field-weighted citation impact, top 13% 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

18 citing papers in PubMed, 5 syntheses or guidelines pooled it, 25 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Pooled it
  6. Population Pharmacokinetics of Amikacin in Non-Neonatal Pediatric Patients: A Scoping Review.European journal of drug metabolism and pharmacokinetics · 2026
    Article
  7. Observational
  8. Article
  9. Article
  10. Pharmacogenomic heterogeneity ofAnnals of medicine · 2025
    Observational
  11. Article
  12. Precision Medicine Strategies to Improve Isoniazid Therapy in Patients with Tuberculosis.European journal of drug metabolism and pharmacokinetics · 2024
    Review
  13. Genetic Variation inPharmaceutics · 2024
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. 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

10 authors at 3 institutions in 1 country.

Levin Thomas *Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India.
Arun Prasath Raju *Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India.
ChaithraDepartment of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India.
Sonal Sekhar MDepartment of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India.
Muralidhar VarmaDepartment of Infectious Diseases, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India.
Kavitha SaravuDepartment of Infectious Diseases, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India.
Mithu BanerjeeDepartment of Biochemistry, All India Institute of Medical Sciences, Jodhpur, 342005, Rajasthan, India.
Chidananda Sanju SvDistrict Tuberculosis Control Office, Ajjarakad, 576001, Karnataka, India.
Surulivelrajan MallayasamyDepartment of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India.
Mahadev RaoDepartment of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India. mahadev.rao@manipal.edu.
Manipal Academy of Higher Education · INAll India Institute of Medical Sciences Jodhpur · INNational Tuberculosis Institute · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeSignificant pharmacokinetic variabilities have been reported for isoniazid across various populations. We aimed to summarize population pharmacokinetic studies of isoniazid in tuberculosis (TB) patients with a specific focus on the influence of N-acetyltransferase 2 (NAT2) genotype/single-nucleotide polymorphism (SNP) on clearance of isoniazid.

methodsA systematic search was conducted in PubMed and Embase for articles published in the English language from inception till February 2022 to identify population pharmacokinetic (PopPK) studies of isoniazid. Studies were included if patient population had TB and received isoniazid therapy, non-linear mixed effects modelling, and parametric approach was used for building isoniazid PopPK model and NAT2 genotype/SNP was tested as a covariate for model development.

resultsA total of 12 articles were identified from PubMed, Embase, and hand searching of articles. Isoniazid disposition was described using a two-compartment model with first-order absorption and linear elimination in most of the studies. Significant covariates influencing the pharmacokinetics of isoniazid were NAT2 genotype, body weight, lean body weight, body mass index, fat-free mass, efavirenz, formulation, CD4 cell count, and gender. Majority of studies conducted in adult TB population have reported a twofold or threefold increase in isoniazid clearance for NAT2 rapid acetylators compared to slow acetylators.

conclusionThe variability in disposition of isoniazid can be majorly attributed to NAT2 genotype. This results in a trimodal clearance pattern with a multi-fold increase in clearance of NAT2 rapid acetylators compared to slow acetylators. Further studies exploring the generalizability/adaptability of developed PopPK models in different clinical settings are required.

Indexed as

Arylamine N-AcetyltransferaseTuberculosisAdultAntitubercular AgentsBody WeightGenotypeHumansIsoniazidPolymorphism, Single NucleotideAntitubercular AgentsArylamine N-AcetyltransferaseIsoniazidNAT2 protein, humanIsoniazidNAT2Population pharmacokineticTB

Identifiers

PMID35852584
PMCPMC9482569
OpenAlexW4285796448

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.