Evidence map›Paper›PMID 12556904›Full record

ArticleMolecular psychiatry2003

Cathepsin D exon 2 polymorphism associated with general intelligence in a healthy older population.

A Payton, F Holland, P Diggle, P Rabbitt, M Horan, Y Davidson, L Gibbons, J Worthington, W E R Ollier, N Pendleton

Abstract read
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In one paragraph

Article in Molecular psychiatry, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 11% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 51 citations in OpenAlex.

  1. Pooled it
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  5. Common genetic variation and performance on standardized cognitive tests.European journal of human genetics : EJHG · 2010
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 5 institutions in 1 country.

A PaytonCentre for Integrated Genomic Medical Research, Manchester University, UK. tony@s1.ser.man.ac.uk
F Holland
P Diggle
P Rabbitt
M Horan
Y Davidson
L Gibbons
J Worthington
W E R Ollier
N Pendleton
University of Manchester · GBCancer Research UK · GBGlaxoSmithKline (United Kingdom) · GBLancaster University · GBUniversity of Salford · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

General intelligence is a heritable trait that is a risk factor for both the onset of dementia and the rate of cognitive decline in community-dwelling older persons. Previous studies screening for quantitative trait loci (QTLs) that influence general intelligence in healthy individuals have identified four loci, two of which are located within the genes insulin-like growth factor 2 receptor (IGF2R) and the Msx1 homeobox. Here, we report the finding of another QTL associated with general intelligence that is located within exon 2 of the cathepsin D (CTSD) gene. A group of 767 healthy adults with a follow-up period of over 15 years have been analyzed for cross-sectional and longitudinal trends in cognitive change using the Heim intelligence test score (AH4-1). We observed a significant association (P = 0.01) between a functional C > T (Ala > Val) transition within exon 2 of the CTSD gene that increases the secretion of pro-CTSD from the cell, and the AH4-1 score at initial testing on entry to the longitudinal study. Interestingly, CTSD is transported by IGF2R from the trans Golgi network to the lysosome.

Indexed as

Polymorphism, GeneticAgedAged, 80 and overAgingCathepsin DCognitionCognition DisordersExonsFemaleGenotypeHumansIntelligenceMaleMiddle AgedCathepsin D

Identifiers

PMID12556904
OpenAlexW2031425384

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.