Evidence map›Paper›PMID 18189239›Full record

ArticleAmerican journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics2008

A genomic scan for age at onset of Alzheimer's disease in 437 families from the NIMH Genetic Initiative.

M Ryan Dickson, Jian Li, Howard W Wiener, Rodney T Perry, Deborah Blacker, Susan S Bassett, Rodney C P Go

Abstract read
In one paragraph

Article in American journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

11 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Genome scan in familial late-onset Alzheimer's disease: a locus on chromosome 6 contributes to age-at-onset.American journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics · 2013
    Article
  9. Article
  10. Genome scan of age-at-onset in the NIMH Alzheimer disease sample uncovers multiple loci, along with evidence of both genetic and sample heterogeneity.American journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics · 2011
    Article
  11. Evidence for three loci modifying age-at-onset of Alzheimer's disease in early-onset PSEN2 families.American journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics · 2010
    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

7 authors.

M Ryan DicksonDepartment of Epidemiology and International Health, The University of Alabama at Birmingham, Birmingham, Alabama 35294-0001, USA. dicksonr@uab.edu
Jian Li
Howard W Wiener
Rodney T Perry
Deborah Blacker
Susan S Bassett
Rodney C P Go

Funding

GENETIC STUDIES OF ALZHEIMERS DISEASEU01MH046281 · NIMH · MASSACHUSETTS GENERAL HOSPITAL · PI ALBERT, MARILYN S · 1989 to 1997
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DIAGNOSTIC CENTERS FOR PSYCHIATRIC LINKAGE STUDIESU01MH046290 · NIMH · JOHNS HOPKINS UNIVERSITY · PI BASSETT, SUSAN SPEAR · 1989 to 1997
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ETIOLOGIC HETEROGENEITY IN FAMILIAL ALZHEIMERS DISEASEU01MH046373 · NIMH · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI GO, RODNEY CHUN PUNG · 1989 to 1997
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NIMH NIH HHS U01 MH046281NIMH NIH HHS U01 MH046290NIMH NIH HHS U01 MH046373
6 · The paper itself

Abstract

We performed linkage analysis for age at onset (AAO) in the total Alzheimer's disease (AD) NIMH sample (N = 437 families). Families were subset as late-onset (320 families, AAO > or = 65) and early/mixed (117 families, at least 1 member with 50 < AAO < 65). Treating AAO as a censored trait, we obtained the gender and APOE adjusted residuals in a parametric survival model and analyzed the residuals as the quantitative trait (QT) in variance-component linkage analysis. For comparison, AAO-age at exam (AAE) was analyzed as the QT adjusting for affection status, gender, and APOE. Heritabilities for residual and AAO-AAE outcomes were 66.3% and 74.0%, respectively for the total sample, 56.0% and 57.0% in the late-onset sample, and 33.0% for both models in the early/mixed sample. The residual model yielded the largest peaks on chromosome 1 with LOD = 2.0 at 190 cM in the total set, LOD = 1.7 at 116 cM on chromosome 3 in the early/mixed subset, and LOD = 1.4 at 71 and 86 cM, respectively, on chromosome 6 in the late-onset subset. For the AAO-AAE outcome model the largest peaks were identified on chromosome 1 at 137 cM (LOD = 2.8) and chromosome 6 at 69 cM (LOD = 2.3) and 86 cM (LOD = 2.2) all in the late-onset subset. Additional peaks with LOD > or = 1 were identified on chromosomes 1, 2, 3, 6, 8, 9, 10, and 12 for the total sample and each subset. Results replicate previous findings, but identify additional suggestive peaks indicating the genetics of AAO in AD is complex with many chromosomal regions potentially containing modifying genes.

Indexed as

Chromosome MappingGenetic LinkageAgedAged, 80 and overAge of OnsetAlzheimer DiseaseApolipoprotein E4Chromosomes, HumanFamilyFemaleGenetics, PopulationGenome, HumanHumansLod ScoreMaleMiddle AgedApolipoprotein E4

Identifiers

PMID18189239
PMCPMC2661765

What OpenQuestion holds

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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.