Evidence map›Paper›PMID 19413562›Full record

ArticleAddiction biology2009

Heritability and a genome-wide linkage analysis of a Type II/B cluster construct for cannabis dependence in an American Indian community.

Cindy L Ehlers, David A Gilder, Ian R Gizer, Kirk C Wilhelmsen

Open access · greenAbstract read
In one paragraph

Article in Addiction biology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
3.0field-weighted citation impact, top 10% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Low voltage alpha EEG phenotype is associated with reduced amplitudes of alpha event-related oscillations, increased cortical phase synchrony, and a low level of response to alcohol.International journal of psychophysiology : official journal of the International Organization of Psychophysiology · 2015
    Article
  8. New approaches for examining associations with latent categorical variables: applications to substance abuse and aggression.Psychology of addictive behaviors : journal of the Society of Psychologists in Addictive Behaviors · 2014
    Article
  9. Review
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Article
  16. The genetics of substance dependence.Annual review of genomics and human genetics · 2012
    Review
  17. Linkage analyses of stimulant dependence, craving, and heavy use in American Indians.American journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics · 2011
    Article
  18. Article
  19. Article
  20. Article
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

4 authors at 1 institution in 1 country.

Cindy L EhlersDepartment of Molecular and Integrative Neurosciences, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA. cindye@scripps.edu
David A Gilder
Ian R Gizer
Kirk C Wilhelmsen
Scripps Research Institute · US

Funding

RISK FACTORS FOR ALCOHOLISM IN NATIVE AMERICANSR37AA010201 · NIAAA · SCRIPPS RESEARCH INSTITUTE, THE · PI EHLERS, CINDY L · 2007 to 2015
$7.0M
RISK FACTORS FOR ALCOHOLISM IN NATIVE AMERICANSR01AA010201 · NIAAA · SCRIPPS RESEARCH INSTITUTE, THE · PI EHLERS, CINDY L · 1994 to 2006
$3.8M
ADOLESCENT MARIJUANA USE IN NATIVE AMERICANSR01DA019333 · NIDA · SCRIPPS RESEARCH INSTITUTE, THE · PI EHLERS, CINDY L · 2004 to 2008
$2.9M
ALCOHOL RESEARCH--RISK AND PROTECTION IN ETHNIC GROUPSK02AA000269 · NIAAA · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI WALL, TAMARA L · 1998 to 2008
$1.0M
NIAAA NIH HHS AA 00269NIAAA NIH HHS AA 010201NIAAA NIH HHS K02 AA000269NIAAA NIH HHS R01 AA010201NIAAA NIH HHS R37 AA010201NIDA NIH HHS DA 019333NIDA NIH HHS R01 DA019333
6 · The paper itself

Abstract

Subtyping of substance dependence disorders holds promise for a number of important research areas including phenotyping for genetic studies, characterizing clinical course, and matching treatment and prevention strategies. This study sought to investigate whether a dichotomous construct similar to Babor's Types A/B and Cloninger's Types I/II for alcohol dependence can be identified for cannabis dependence in a Native American sample. In addition, heritability of this construct and its behavior in a genetic linkage analyses were evaluated. Information on cannabis use and dependence symptoms and other psychiatric disorders was obtained using the Semi-Structured Assessment for the Genetics of Alcoholism from a community sample of 606 American Indians. Hierarchical average linkage and K means cluster analysis was used, and a three-cluster solution was found to generate the best separation of variables. Ninety-one per cent of cannabis-dependent participants fell into one of the two subtypes: Type A/I cluster (n = 114, 56%) and Type B/II cluster (n = 70, 35%). Heritability (estimated using Sequential Oligogenic Linkage Analysis Routines) was only significant for the Type B/II cluster (h(2) = 0.44, SE = 0.18, P < 0.01). Evidence for linkage was found for the Type B/II cluster (versus no diagnosis) on chromosome 16 [at 139 centimorgans (cM), Log of the Odds (LOD) score = 4.4], and on chromosome 19 (at 74 cM, LOD score = 6.4). Regions of interest for this phenotype (LOD > 1.5) were also located on chromosomes 14, 21, 22. These findings suggest that a Type B/II cannabis dependence phenotype can be identified in this population and that it is in part heritable and linked to areas of the genome identified previously for drug dependence phenotypes in this population as well as in other studies.

Indexed as

Genome-Wide Association StudyAdultChromosomes, Human, Pair 14Chromosomes, Human, Pair 16Chromosomes, Human, Pair 19Chromosomes, Human, Pair 21Chromosomes, Human, Pair 22Cluster AnalysisCross-Sectional StudiesFemaleGenetic LinkageHumansIndians, North AmericanLod ScoreMaleMarijuana Abuse

Identifiers

PMID19413562
PMCPMC2850263
OpenAlexW1991483399

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.