Evidence map›Paper›PMID 20200517›Full record

ArticleClinical pharmacology and therapeutics2010

A polymorphism in the VKORC1 regulator calumenin predicts higher warfarin dose requirements in African Americans.

D Voora, D C Koboldt, C R King, P A Lenzini, C S Eby, R Porche-Sorbet, E Deych, M Crankshaw, P E Milligan, H L McLeod and 6 more

Open access · greenAbstract readValidation Study
In one paragraph

Article in Clinical pharmacology and therapeutics, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 3 pooled it
15.9field-weighted citation impact, top 1% 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

49 citing papers in PubMed, 3 syntheses or guidelines pooled it, 92 citations in OpenAlex.

  1. Pooled it
  2. Guideline
  3. Pooled it
  4. Review
  5. Review
  6. Warfarin Dosing in Patients With CYP2C9*5 Variant Alleles.Clinical pharmacology and therapeutics · 2022
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  20. Observational
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

16 authors at 4 institutions in 1 country.

D VooraDepartment of Medicine, Washington University in St Louis, St Louis, Missouri, USA.
D C Koboldt
C R King
P A Lenzini
C S Eby
R Porche-Sorbet
E Deych
M Crankshaw
P E Milligan
H L McLeod
S R Patel
L H Cavallari
P M Ridker
G R Grice
R D Miller
B F Gage
Washington University in St. Louis · USUniversity of Illinois Chicago · USBrigham and Women's Hospital · USDuke Medical Center · US

Funding

Thinrs ParticipantsR01HL074724 · NHLBI · WASHINGTON UNIVERSITY · PI GAGE, BRIAN F · 2003 to 2006
$2.7M
NHLBI NIH HHS R01 HL074724
6 · The paper itself

Abstract

Warfarin demonstrates a wide interindividual variability in response that is mediated partly by variants in cytochrome P450 2C9 (CYP2C9) and vitamin K 2,3-epoxide reductase complex subunit 1 (VKORC1). It is not known whether variants in calumenin (CALU) (vitamin K reductase regulator) have an influence on warfarin dose requirements. We resequenced CALU regions in a discovery cohort of dose outliers: patients with high (>90th percentile, n = 55) or low (<10th percentile, n = 53) warfarin dose requirements (after accounting for known genetic and nongenetic variables). One CALU variant, rs339097, was associated with high doses (P = 0.01). We validated this variant as a predictor of higher warfarin doses in two replication cohorts: (i) 496 patients of mixed ethnicity and (ii) 194 African-American patients. The G allele of rs339097 (the allele frequency was 0.14 in African Americans and 0.002 in Caucasians) was associated with the requirement for a 14.5% (SD +/- 7%) higher therapeutic dose (P = 0.03) in the first replication cohort and a higher-than-predicted dose in the second replication cohort (allele frequency 0.14, one-sided P = 0.03). CALU rs339097 A>G is associated with higher warfarin dose requirements, independent of known genetic and nongenetic predictors of warfarin dose in African Americans.

Indexed as

AdultAgedAllelesAnticoagulantsBlack or African AmericanCalcium-Binding ProteinsCohort StudiesDose-Response Relationship, DrugFemaleHumansMaleMiddle AgedMixed Function OxygenasesPolymorphism, Single NucleotideVitamin K Epoxide ReductasesWarfarinAnticoagulantsCalcium-Binding ProteinsCALU protein, humanMixed Function OxygenasesVitamin K Epoxide ReductasesVKORC1 protein, humanWarfarin

Identifiers

PMID20200517
PMCPMC2928561
OpenAlexW2060258790

What OpenQuestion holds

Textmetadata
LicenceTDM
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.