Evidence map›Paper›PMID 10788337›Full record

ArticleAmerican journal of human genetics2000

Haplotypes and linkage disequilibrium at the phenylalanine hydroxylase locus, PAH, in a global representation of populations.

J R Kidd, A J Pakstis, H Zhao, R B Lu, F E Okonofua, A Odunsi, E Grigorenko, B B Tamir, J Friedlaender, L O Schulz and 2 more

Open access · bronzeAbstract read
In one paragraph

Article in American journal of human genetics, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
18.9field-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

50 citing papers in PubMed, 163 citations in OpenAlex.

  1. Review
  2. The status ofMedical journal of the Islamic Republic of Iran · 2019
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  8. Modeling Informatively Missing Genotypes in Haplotype Analysis.Communications in statistics: theory and methods · 2009
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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

12 authors at 7 institutions in 4 countries.

J R KiddDepartment of Genetics, Yale University School of Medicine, New Haven, CT 06520, USA. kidd@biomed.med.yale.edu
A J Pakstis
H Zhao
R B Lu
F E Okonofua
A Odunsi
E Grigorenko
B B Tamir
J Friedlaender
L O Schulz
J Parnas
K K Kidd
Yale University · USRoswell Park Comprehensive Cancer Center · USTel Aviv University · ILTemple University · USTri-Service General Hospital · TWUniversity of Benin · NGUniversity of Wisconsin–Milwaukee · US

Funding

Theoretical Studies of Linkage DisequilibriumP01GM057672 · NIGMS · YALE UNIVERSITY · PI KIDD, JUDITH R · 1998 to 2008
$11.0M
NIGMS NIH HHS GM57672
6 · The paper itself

Abstract

Because defects in the phenylalanine hydroxylase gene (PAH) cause phenylketonuria (PKU), PAH was studied for normal polymorphisms and linkage disequilibrium soon after the gene was cloned. Studies in the 1980s concentrated on European populations in which PKU was common and showed that haplotype-frequency variation exists between some regions of the world. In European populations, linkage disequilibrium generally was found not to exist between RFLPs at opposite ends of the gene but was found to exist among the RFLPs clustered at each end. We have now undertaken the first global survey of normal variation and disequilibrium across the PAH gene. Four well-mapped single-nucleotide polymorphisms (SNPs) spanning approximately 75 kb, two near each end of the gene, were selected to allow linkage disequilibrium across most of the gene to be examined. These SNPs were studied as PCR-RFLP markers in samples of, on average, 50 individuals for each of 29 populations, including, for the first time, multiple populations from Africa and from the Americas. All four sites are polymorphic in all 29 populations. Although all but 5 of the 16 possible haplotypes reach frequencies >5% somewhere in the world, no haplotype was seen in all populations. Overall linkage disequilibrium is highly significant in all populations, but disequilibrium between the opposite ends is significant only in Native American populations and in one African population. This study demonstrates that the physical extent of linkage disequilibrium can differ substantially among populations from different regions of the world, because of both ancient genetic drift in the ancestor common to a large regional group of modern populations and recent genetic drift affecting individual populations.

Indexed as

AfricaAllelesAsia, EasternExonsGene FrequencyHaplotypesHeterozygoteHumansIndians, North AmericanLikelihood FunctionsLinkage DisequilibriumMolecular Sequence DataPhenylalanine HydroxylasePhylogenyPolymorphism, GeneticPolymorphism, Single NucleotidePhenylalanine Hydroxylase

Identifiers

PMID10788337
PMCPMC1378054
OpenAlexW2151922804

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.