Evidence map›Paper›PMID 18156436›Full record

ArticleJournal of medical genetics2008

Comparison of X-chromosome inactivation patterns in multiple tissues from human females.

D C Bittel, M F Theodoro, N Kibiryeva, W Fischer, Z Talebizadeh, M G Butler

Open access · greenAbstract readComparative StudyLetter
In one paragraph

Article in Journal of medical genetics, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
2.4field-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

58 citing papers in PubMed, 193 citations in OpenAlex.

  1. Review
  2. Article
  3. MCT8 Deficiency in Females.The Journal of clinical endocrinology and metabolism · 2025
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  8. Review
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  16. X-chromosome inactivation patterns depend on age and tissue but not conception method in humans.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2023
    Article
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  18. Review
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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

6 authors at 3 institutions in 1 country.

D C BittelSection of Medical Genetics and Molecular Medicine, Children's Mercy Hospitals and Clinics and University of Missouri - Kansas City School of Medicine, Kansas City, Missouri 64108, USA.
M F Theodoro
N Kibiryeva
W Fischer
Z Talebizadeh
M G Butler
University of Missouri–Kansas City · USChildren's Mercy Hospital · USMercy Hospital · US

Funding

COMPULSIVE FOOD-SEEKING &FOOD MOTIVATION IN PWSR01HD041672 · NICHD · UNIVERSITY OF ROCHESTER · PI ZARCONE, JENNIFER R · 2001 to 2005
$1.2M
NICHD NIH HHS N01-HD-4-3368NICHD NIH HHS N01-HD-4-3383NICHD NIH HHS R01 HD041672
6 · The paper itself

Abstract

backgroundX-chromosome inactivation (XCI) is the mechanism by which gene dosage uniformity is achieved between female mammals with two X chromosomes and male mammals with a single X chromosome, and is thought to occur randomly. For molecular genetic testing, accessible tissues (eg blood) are commonly studied, but the relationship with inaccessible tissues (eg brain) is poorly understood. For accessible tissues to be informative for genetic analysis, a high degree of concordance of genetic findings among tissue types is required.

objectiveTo determine the relationship among multiple tissues within females at different ages (fetus to 82 years).

methodsXCI patterns were analysed using the polymorphic androgen receptor (AR) gene assay. DNA was isolated from 26 different human females without history of malignancy, using 34 autopsy tissues representing the three embryonic germ layers.

results33 of the 280 tissue samples analysed from 13 of the 26 females showed skewed XCI values (>80:20%). Average XCI value was not significantly different among the tissues, but a trend for increasing XCI variability was observed with age in blood and other tissues studied (eg the SD for all tissues studied for the 0-2 years group was 9.9% compared with 14.8% in the >60 years group). We found a significant correlation (r(s) = 0.51, p = 0.035) between XCI values for blood and/or spleen and brain tissue, and in most other tissues representing the three embryonic germ layers.

conclusionsIn our study, XCI data were comparable among accessible (eg blood) and inaccessible tissues (eg brain) in females at various ages, and may be useful for genetic testing. A trend was seen for greater XCI variability with increasing age, particularly in older women (>60 years).

Indexed as

X Chromosome InactivationAdolescentAdultAgedAged, 80 and overChildChild, PreschoolDosage Compensation, GeneticFemaleFetusHumansInfantInfant, NewbornMiddle AgedPregnancyReceptors, AndrogenReceptors, Androgen

Identifiers

PMID18156436
PMCPMC5489244
OpenAlexW2156981627

What OpenQuestion holds

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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.