Evidence map›Paper›PMID 9837830›Full record

ArticleAmerican journal of human genetics1998

Association and linkage of the dopamine transporter gene and attention-deficit hyperactivity disorder in children: heterogeneity owing to diagnostic subtype and severity.

I D Waldman, D C Rowe, A Abramowitz, S T Kozel, J H Mohr, S L Sherman, H H Cleveland, M L Sanders, J M Gard, C Stever

Registry-linked trialOpen access · bronzeAbstract read
In one paragraph

Article in American journal of human genetics, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02167048 (Effects of Low-dose Versus Normal-dose Psychostimulants on Executive Functions in Individuals With Attention-Deficit Hyperactivity Disorder), which is not on this map. Cited by 116 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
116citing papers in PubMed, 3 pooled it
19.1field-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.

NCT02167048 phase1 / phase2unknown statusnot on this mapstarted 2014, after this paper: background citation

Effects of Low-dose Versus Normal-dose Psychostimulants on Executive Functions in Individuals With Attention-Deficit Hyperactivity Disorder

TypeinterventionalSponsorUniversity of British ColumbiaRan2014 to 2024Enrolled52ConditionsAttention Deficit Hyperactivity DisordersArmsPsychostimulants
3 · Its place in the literature

Who cites it

116 citing papers in PubMed, 3 syntheses or guidelines pooled it, 462 citations in OpenAlex.

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56 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.

I D WaldmanDepartment of Psychology, Emory University, Atlanta, Georgia, USA. waldman@ss.emory.edu
D C Rowe
A Abramowitz
S T Kozel
J H Mohr
S L Sherman
H H Cleveland
M L Sanders
J M Gard
C Stever
Emory University · USUniversity of Arizona · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Attention-deficit hyperactivity disorder (ADHD) affects approximately 3%-5% of children in the United States. In the current psychiatric nomenclature, ADHD comprises three subtypes: inattentive, hyperactive-impulsive, and combined. In this study, we used four analytic strategies to examine the association and linkage of the dopamine transporter gene (DAT1) and ADHD. Our sample included 122 children referred to psychiatric clinics for behavioral and learning problems that included but were not limited to ADHD, as well as their parents and siblings. Within-family analyses of linkage disequilibrium, using the transmission disequilibrium test (TDT), confirmed the 480-bp allele as the high-risk allele. In between-family association analyses, levels of hyperactive-impulsive symptoms but not inattentive symptoms were related to the number of DAT1 high-risk alleles. Siblings discordant for the number of DAT1 high-risk alleles differed markedly in their levels of both hyperactive-impulsive and inattentive symptoms, such that the sibling with the higher number of high-risk alleles had much higher symptom levels. Within-family analyses of linkage disequilibrium, using the TDT, suggested association and linkage of ADHD with DAT1 and that this relation was especially strong with the combined but not the inattentive subtype. The relation of DAT1 to ADHD increased monotonically, from low to medium to high levels of symptom severity. Our results replicate and extend previous findings of the association between the DAT1 gene and childhood ADHD. This represents one of the first replicated relations of a candidate gene and a psychiatric disorder in children.

Indexed as

Genetic LinkageMembrane GlycoproteinsMembrane Transport ProteinsNerve Tissue ProteinsAllelesAttention Deficit Disorder with HyperactivityBehavioral SymptomsCarrier ProteinsChildDiseases in TwinsDopamine Plasma Membrane Transport ProteinsEthnicityFemaleGenes, DominantGenes, RecessiveHumansCarrier ProteinsDopamine Plasma Membrane Transport ProteinsMembrane GlycoproteinsMembrane Transport ProteinsNerve Tissue ProteinsSLC6A3 protein, human

Identifiers

PMID9837830
PMCPMC1377649
OpenAlexW2096943304

What OpenQuestion holds

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Read underepoch 390

Registered trials

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.