Evidence map›Paper›PMID 16607460›Full record

ArticleJournal of human genetics2006

No evidence for association of the ENPP1 (PC-1) K121Q variant with risk of type 2 diabetes in a Japanese population.

Parvaneh Keshavarz, Hiroshi Inoue, Yukiko Sakamoto, Kiyoshi Kunika, Toshihito Tanahashi, Naoto Nakamura, Toshikazu Yoshikawa, Natsuo Yasui, Hiroshi Shiota, Mitsuo Itakura

Erratum issuedOpen access · bronzeAbstract readComparative Study
PubMed Publisher
In one paragraph

Article in Journal of human genetics, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
5.5field-weighted citation impact, top 4% 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, 1 synthesis or guideline pooled it, 56 citations in OpenAlex.

  1. Pooled it
  2. Trial
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4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

10 authors at 2 institutions in 1 country.

Parvaneh KeshavarzDivision of Genetic Information, Institute for Genome Research, The University of Tokushima, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan.
Hiroshi InoueDivision of Genetic Information, Institute for Genome Research, The University of Tokushima, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan. hinoue@genome.tokushima-u.ac.jp.
Yukiko SakamotoDivision of Genetic Information, Institute for Genome Research, The University of Tokushima, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan.
Kiyoshi KunikaDivision of Genetic Information, Institute for Genome Research, The University of Tokushima, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan.
Toshihito TanahashiDivision of Genetic Information, Institute for Genome Research, The University of Tokushima, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan.
Naoto NakamuraDepartment of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan.
Toshikazu YoshikawaDepartment of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan.
Natsuo YasuiDepartment of Orthopedics, Institute of Health Biosciences, The University of Tokushima, Tokushima, Japan.
Hiroshi ShiotaDepartment of Ophthalmology and Visual Neuroscience, Institute for Health Biosciences, The University of Tokushima, Tokushima, Japan.
Mitsuo ItakuraDivision of Genetic Information, Institute for Genome Research, The University of Tokushima, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan.
Tokushima University · JPKyoto Prefectural University of Medicine · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Ecto-nucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1, also known as PC-1) inhibits insulin signal transduction pathway(s). Previous studies have demonstrated the K121Q variant of the ENPP1 gene to have a significant functional role in determining susceptibility to insulin resistance and type 2 diabetes (T2D). To assess whether the K121Q variant has any impact on T2D in Japanese, we undertook an extensive case-control association study using a total of 911 unrelated Japanese T2D patients and 876 control subjects. No significant difference was observed in either genotype distribution (P=0.95) or allele frequency (P=0.83) between T2D and control groups. Notably, the frequency of the ancestral Q121 allele, which is also present in other primates, was quite high in African-Americans, and showed a marked ethnic variation (77.3% in African-Americans, 16.7% in European Americans, 10.5% in Japanese and 4.2% in Han Chinese). Consequently, the pairwise F(ST )value (a classic measure of genetic distance between pairs of population) showed highly significant differentiations between African-American and non-African-American populations (F(ST)>0.3). Our results indicated that the K121Q variant of the ENPP1 gene has very little, if any, impact on T2D susceptibility in Japanese, but may play a role in the inter-ethnic variability in insulin resistance and T2D.

Indexed as

Genetic VariationAllelesAmino Acid SubstitutionAsian PeopleBlack or African AmericanCase-Control StudiesDiabetes Mellitus, Type 2FemaleGene FrequencyHumansInsulin ResistanceJapanMalePhosphoric Diester HydrolasesPyrophosphatasesRisk Factorsectonucleotide pyrophosphatase phosphodiesterase 1Phosphoric Diester HydrolasesPyrophosphatases

Identifiers

PMID16607460
OpenAlexW2135584997

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.