Evidence map›Paper›PMID 21225912›Full record

ArticlePediatric blood & cancer2011

Increased risk of vincristine neurotoxicity associated with low CYP3A5 expression genotype in children with acute lymphoblastic leukemia.

Akinbode Egbelakin, Michael J Ferguson, Emily A MacGill, Amalia S Lehmann, Ariel R Topletz, Sara K Quinney, Lang Li, Kevin C McCammack, Stephen D Hall, Jamie L Renbarger

Open access · greenAbstract readComparative Study
In one paragraph

Article in Pediatric blood & cancer, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 97 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
97citing papers in PubMed, 5 pooled it
11.4field-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

97 citing papers in PubMed, 5 syntheses or guidelines pooled it, 186 citations in OpenAlex.

  1. Pooled it
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  12. Insect Lipidomics: Advances, Applications, and Physiological Insights.Advances in experimental medicine and biology · 2026
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  19. Vincristine Disposition and Neurotoxicity Are Unchanged in Humanized CYP3A5 Mice.Drug metabolism and disposition: the biological fate of chemicals · 2024
    Article
  20. Article

37 more citing papers are in PubMed but not listed here.

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 2 institutions in 1 country.

Akinbode EgbelakinDepartment of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA.
Michael J Ferguson
Emily A MacGill
Amalia S Lehmann
Ariel R Topletz
Sara K Quinney
Lang Li
Kevin C McCammack
Stephen D Hall
Jamie L Renbarger
Indiana University – Purdue University Indianapolis · USIndiana University School of Medicine

Funding

INSTITUTE FOR TRANSLATIONAL HEALTH SCIENCE (UL1): BPCAUL1RR025014 · NCRR · UNIVERSITY OF WASHINGTON · PI DISIS, MARY L. · 2007 to 2011
$51.5M
Pharmacogenetic Determinants of Vincristine Toxicity and ResponseR01HD062484 · NICHD · INDIANA UNIVERSITY INDIANAPOLIS · PI RENBARGER, JAMIE L · 2011 to 2016
$3.1M
Pharmacogenetic Determinants of Vinca Alkaloid ResponseK23RR019956 · NCRR · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI RENBARGER, JAMIE L · 2005 to 2009
$672k
NCRR NIH HHS K23 RR019956NCRR NIH HHS UL1 RR025014NICHD NIH HHS R01 HD062484
6 · The paper itself

Abstract

backgroundThis study evaluates the relationship between cytochrome P450 (CYP) 3A5 genotype and vincristine-induced peripheral neuropathy (VIPN) in children with precursor B cell acute lymphoblastic leukemia (preB ALL). We have shown in vitro that vincristine is metabolized significantly more efficiently by CYP3A5 than by CYP3A4. We also found that vincristine neurotoxicity is less common in African-Americans (70% express CYP3A5) than in Caucasians. We test the hypothesis that CYP3A5 expressers experience less vincristine neuropathy than do CYP3A5 non-expressers. PROCEDURE: This study of pharmacogenetics of vincristine neuropathy in children with preB ALL was completed at Indiana University Simon Cancer Center. Whole blood for DNA extraction and genotyping was collected as well as plasma from a single time-point for analysis of vincristine and primary metabolite (M1) concentrations. Vincristine neuropathy was captured via chart review and graded per the National Cancer Institute Common Terminology Criteria for Adverse Events, version 3.0.

resultsEighty-nine percent of CYP3A5 expressers experienced neurotoxicity versus 100% of non-expressers (P = 0.03). The proportion of treatment months with neurotoxicity was significantly different between the expressers and non-expressers (16% vs. 27%, P = 0.0007). Limited pharmacokinetic data suggest different rates of vincristine metabolism between CYP3A5 genotype groups with higher primary metabolite (M1) plasma concentrations (P = 0.0004) and lower metabolic ratios ([vincristine]/[M1]) (P = 0.036) in the CYP3A5 expressers compared to the CYP3A5 non-expressers. M1 concentration was also inversely related to severity of neuropathy (P = 0.0316).

conclusionsIn children with preB ALL, CYP3A5 expressers experience less VIPN, produce more M1, and have lower metabolic ratios compared to CYP3A5 non-expressers.

Indexed as

AdolescentAntineoplastic Agents, PhytogenicBlack or African AmericanChildChild, PreschoolCytochrome P-450 CYP3ADNA, NeoplasmGenotypeHumansInfantMetabolic Clearance RateNeurotoxicity SyndromesPharmacogeneticsPolymerase Chain ReactionPrecursor B-Cell Lymphoblastic Leukemia-LymphomaTissue DistributionAntineoplastic Agents, PhytogenicCYP3A5 protein, humanCytochrome P-450 CYP3ADNA, NeoplasmVincristineacute lymphoblastic leukemiaperipheral neuropathypharmacogeneticsvincristine

Identifiers

PMID21225912
PMCPMC3020258
OpenAlexW2131309128

What OpenQuestion holds

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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.