Evidence map›Paper›PMID 18045777›Full record

ArticleHuman molecular genetics2008

A network of dopaminergic gene variations implicated as risk factors for schizophrenia.

Michael E Talkowski, George Kirov, Mikhil Bamne, Lyudmila Georgieva, Gonzalo Torres, Hader Mansour, Kodavali V Chowdari, Vihra Milanova, Joel Wood, Lora McClain and 7 more

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Human molecular genetics, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed, 1 pooled it
10.0field-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

71 citing papers in PubMed, 1 synthesis or guideline pooled it, 146 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. A review of post-GWAS studies in schizophrenia.Translational psychiatry · 2025
    Review
  5. Decoding serotonin: the molecular symphony behind depression.Frontiers in cellular neuroscience · 2025
    Review
  6. Article
  7. Review
  8. Association ofFrontiers in psychiatry · 2023
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Association Between Polymorphisms in the 5' Region of theNeuropsychiatric disease and treatment · 2020
    Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Review
  20. Article

11 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

17 authors at 4 institutions in 3 countries.

Michael E TalkowskiDepartment of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.
George Kirov
Mikhil Bamne
Lyudmila Georgieva
Gonzalo Torres
Hader Mansour
Kodavali V Chowdari
Vihra Milanova
Joel Wood
Lora McClain
Konasale Prasad
Brian Shirts
Jianping Zhang
Michael C O'Donovan
Michael J Owen
Bernie Devlin
Vishwajit L Nimgaonkar
University of Pittsburgh · USCardiff University · GBMayo Clinic in Arizona · USMedical University of Sofia · BG

Funding

University of Pittsburgh Clinical and Translational Science InstituteUL1TR000005 · NCATS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI REIS, STEVEN E · 2012 to 2015
$50.8M
Pharmacogenetics of Phase II Drug Metabolizing EnzymesU19GM061388 · NIGMS · MAYO CLINIC ROCHESTER · PI WEINSHILBOUM, RICHARD M. · 2010 to 2014
$15.8M
PHARMACOGENETICS OF PHASE II DRUG METABOLIZING ENZYMESU01GM061388 · NIGMS · MAYO CLINIC ROCHESTER · PI WEINSHILBOUM, RICHARD M. · 2000 to 2009
$15.7M
INHERITED VARIATIONS IN DRUG-METABOLIZING ENZYMESR01GM028157 · NIGMS · MAYO CLINIC ROCHESTER · PI WEINSHILBOUM, RICHARD M. · 1985 to 2019
$6.9M
Genetic Determinants of Bipolar DisorderR01MH063420 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI NIMGAONKAR, VISHWAJIT LAXMIKANT · 2003 to 2007
$4.3M
Genetic Susceptibility in SchizophreniaR01MH056242 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI NIMGAONKAR, VISHWAJIT LAXMIKANT · 2002 to 2007
$2.9M
Schizophrenia Liability Genes Among African-AmericansR01MH066263 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI NIMGAONKAR, VISHWAJIT LAXMIKANT · 2002 to 2006
$2.5M
GENETIC SUSCEPTIBILITY IN SCHIZOPHRENIAR10MH056242 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI NIMGAONKAR, VISHWAJIT LAXMIKANT · 1997 to 2001
$1.2M
RGS4 Polymorphisms and Neurobiology of SchizophreniaK23MH072995 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI PRASAD, KONASALE M · 2005 to 2009
$877k
Refining the Genetic Basis of the Dopamine Hypothesis of SchizophreniaF31MH080582 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI TALKOWSKI, MICHAEL E · 2007 to 2008
$43k
Medical Research Council G9309834Medical Research Council G9810900NCATS NIH HHS UL1 TR000005NIGMS NIH HHS GM28157NIGMS NIH HHS GM61388NIGMS NIH HHS R01 GM028157NIGMS NIH HHS U01 GM061388NIGMS NIH HHS U19 GM061388NIMH NIH HHS F31 MH080582NIMH NIH HHS K23 MH072995NIMH NIH HHS MH063420NIMH NIH HHS MH080582NIMH NIH HHS MH56242NIMH NIH HHS MH66263NIMH NIH HHS R01 MH056242NIMH NIH HHS R01 MH063420NIMH NIH HHS R01 MH066263NIMH NIH HHS R10 MH056242
6 · The paper itself

Abstract

We evaluated the hypothesis that dopaminergic polymorphisms are risk factors for schizophrenia (SZ). In stage I, we screened 18 dopamine-related genes in two independent US Caucasian samples: 150 trios and 328 cases/501 controls. The most promising associations were detected with SLC6A3 (alias DAT), DRD3, COMT and SLC18A2 (alias VMAT2). In stage II, we comprehensively evaluated these four genes by genotyping 68 SNPs in all 478 cases and 501 controls from stage I. Fifteen (23.1%) significant associations were found (p < or = 0.05). We sought epistasis between pairs of SNPs providing evidence of a main effect and observed 17 significant interactions (169 tests); 41.2% of significant interactions involved rs3756450 (5' near promoter) or rs464049 (intron 4) at SLC6A3. In stage III, we confirmed our findings by genotyping 65 SNPs among 659 Bulgarian trios. Both SLC6A3 variants implicated in the US interactions were overtransmitted in this cohort (rs3756450, p = 0.035; rs464049, p = 0.011). Joint analyses from stages II and III identified associations at all four genes (p(joint) < 0.05). We tested 29 putative interactions from stage II and detected replication between seven locus pairs (p < or = 0.05). Simulations suggested our stage II and stage III interaction results were unlikely to have occurred by chance (p = 0.008 and 0.001, respectively). In stage IV we evaluated rs464049 and rs3756450 for functional effects and found significant allele-specific differences at rs3756450 using electrophoretic mobility shift assays and dual-luciferase promoter assays. Our data suggest that a network of dopaminergic polymorphisms increase risk for SZ.

Indexed as

Genetic VariationAllelesBulgariaCase-Control StudiesCatechol O-MethyltransferaseCohort StudiesData Interpretation, StatisticalDopamine Plasma Membrane Transport ProteinsFemaleGene FrequencyGenes, ReporterHumansLinkage DisequilibriumLogistic ModelsLuciferases, RenillaOdds RatioCatechol O-MethyltransferaseDopamine Plasma Membrane Transport ProteinsDRD3 protein, humanLuciferases, RenillaReceptors, Dopamine D3SLC18A2 protein, humanSLC6A3 protein, humanVesicular Monoamine Transport Proteins

Identifiers

PMID18045777
PMCPMC3777405
OpenAlexW2114011270

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.