Evidence map›Paper›PMID 19822806›Full record

ArticleCirculation2009

NOS1AP is a genetic modifier of the long-QT syndrome.

Lia Crotti, Maria Cristina Monti, Roberto Insolia, Anna Peljto, Althea Goosen, Paul A Brink, David A Greenberg, Peter J Schwartz, Alfred L George

Open access · greenAbstract readComparative Study
In one paragraph

Article in Circulation, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 127 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
127citing papers in PubMed, 2 pooled it
14.7field-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

127 citing papers in PubMed, 2 syntheses or guidelines pooled it, 267 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Genome-wide association study-identified novel genetic loci for QT interval in Taiwan: implications for population-specific arrhythmia risk.Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology · 2026
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  10. Genetic QT score as a predictor of sudden cardiac death in participants with sleep-disordered breathing in the UK Biobank.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2025
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  15. Outcomes in Dutch DPP6 risk haplotype for familial idiopathic ventricular fibrillation: a focused update.Netherlands heart journal : monthly journal of the Netherlands Society of Cardiology and the Netherlands Heart Foundation · 2023
    Article
  16. From gene-specific to function-specific risk stratification in long QT syndrome Type 2: implications for clinical management.Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology · 2023
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67 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

9 authors at 4 institutions in 2 countries.

Lia CrottiDepartment of Lung, Blood, and Heart, University of Pavia, Pavia, Italy.
Maria Cristina Monti
Roberto Insolia
Anna Peljto
Althea Goosen
Paul A Brink
David A Greenberg
Peter J Schwartz
Alfred L George
Stellenbosch University · ZAIRCCS Istituto Auxologico Italiano · ITUniversity of Pavia · ITIstituti di Ricovero e Cura a Carattere Scientifico · IT

Funding

RESOLVING HETEROGENEITY IN EPILEPSY WITH GENETIC MARKERSR01NS027941 · NINDS · MOUNT SINAI SCHOOL OF MEDICINE OF NYU · PI GREENBERG, DAVID A. · 1990 to 2010
$9.0M
Genetic Modifiers of Congenital Long QT SyndromeR01HL068880 · NHLBI · VANDERBILT UNIVERSITY · PI GEORGE, ALFRED L. · 2001 to 2011
$4.8M
PSYCHIATRIC GENETICS AND FAMILY STUDIES--ROBUST METHODSR01MH048858 · NIMH · COLUMBIA UNIV NEW YORK MORNINGSIDE · PI HODGE, SUSAN E. · 1992 to 2010
$1.5M
NHLBI NIH HHS HL068880NHLBI NIH HHS R01 HL068880NIMH NIH HHS MH48858NIMH NIH HHS R01 MH048858NINDS NIH HHS NS27941NINDS NIH HHS R01 NS027941Telethon GGP07016
6 · The paper itself

Abstract

backgroundIn congenital long-QT syndrome (LQTS), a genetically heterogeneous disorder that predisposes to sudden cardiac death, genetic factors other than the primary mutation may modify the probability of life-threatening events. Recent evidence indicates that common variants in NOS1AP are associated with the QT-interval duration in the general population. METHODS AND

resultsWe tested the hypothesis that common variants in NOS1AP modify the risk of clinical manifestations and the degree of QT-interval prolongation in a South African LQTS population (500 subjects, 205 mutation carriers) segregating a founder mutation in KCNQ1 (A341V) using a family-based association analysis. NOS1AP variants were significantly associated with the occurrence of symptoms (rs4657139, P=0.019; rs16847548, P=0.003), with clinical severity, as manifested by a greater probability for cardiac arrest and sudden death (rs4657139, P=0.028; rs16847548, P=0.014), and with greater likelihood of having a QT interval in the top 40% of values among all mutation carriers (rs4657139, P=0.03; rs16847548, P=0.03).

conclusionsThese findings indicate that NOS1AP, a gene first identified as affecting the QTc interval in a general population, also influences sudden death risk in subjects with LQTS. The association of NOS1AP genetic variants with risk for life-threatening arrhythmias suggests that this gene is a genetic modifier of LQTS, and this knowledge may be clinically useful for risk stratification for patients with this disease, after validation in other LQTS populations.

Indexed as

Adaptor Proteins, Signal TransducingArrhythmias, CardiacDeath, SuddenFemaleGenetic MarkersGenetic VariationHumansLong QT SyndromeMaleMutationRisk FactorsAdaptor Proteins, Signal TransducingGenetic MarkersNOS1AP protein, human

Identifiers

PMID19822806
PMCPMC2783481
OpenAlexW2116008876

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Registered trials

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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.