Evidence map›Paper›PMID 9245997›Full record

ArticleAmerican journal of human genetics1997

Familial skewed X inactivation: a molecular trait associated with high spontaneous-abortion rate maps to Xq28.

E Pegoraro, J Whitaker, P Mowery-Rushton, U Surti, M Lanasa, E P Hoffman

Open access · bronzeAbstract read
In one paragraph

Article in American journal of human genetics, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 2 pooled it
4.3field-weighted citation impact, top 5% 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

33 citing papers in PubMed, 2 syntheses or guidelines pooled it, 139 citations in OpenAlex.

  1. Immunotherapy for recurrent miscarriage.The Cochrane database of systematic reviews · 2014
    Pooled it
  2. Guideline
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  9. Human X chromosome inactivation and reactivation: implications for cell reprogramming and disease.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2017
    Review
  10. Review
  11. Complexity and diversity of F8 genetic variations in the 1000 genomes.Journal of thrombosis and haemostasis : JTH · 2015
    Article
  12. The human sex ratio from conception to birth.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

E PegoraroDepartment of Molecular Genetics and Biochemistry, University of Pittsburgh School of Medicine, PA 15261, USA.
J Whitaker
P Mowery-Rushton
U Surti
M Lanasa
E P Hoffman
University of Pittsburgh · USMagee-Womens Hospital · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We report a family ascertained for molecular diagnosis of muscular dystrophy in a young girl, in which preferential activation (> or = 95% of cells) of the paternal X chromosome was seen in both the proband and her mother. To determine the molecular basis for skewed X inactivation, we studied X-inactivation patterns in peripheral blood and/or oral mucosal cells from 50 members of this family and from a cohort of normal females. We found excellent concordance between X-inactivation patterns in blood and oral mucosal cell nuclei in all females. Of the 50 female pedigree members studied, 16 showed preferential use (> or = 95% cells) of the paternal X chromosome; none of 62 randomly selected females showed similarly skewed X inactivation was maternally inherited in this family. A linkage study using the molecular trait of skewed X inactivation as the scored phenotype localized this trait to Xq28 (DXS1108; maximum LOD score [Zmax] = 4.34, recombination fraction [theta] = 0). Both genotyping of additional markers and FISH of a YAC probe in Xq28 showed a deletion spanning from intron 22 of the factor VIII gene to DXS115-3. This deletion completely cosegregated with the trait (Zmax = 6.92, theta = 0). Comparison of clinical findings between affected and unaffected females in the 50-member pedigree showed a statistically significant increase in spontaneous-abortion rate in the females carrying the trait (P < .02). To our knowledge, this is the first gene-mapping study of abnormalities of X-inactivation patterns and is the first association of a specific locus for recurrent spontaneous abortion in a cytogenetically normal family. The involvement of this locus in cell lethality, cell-growth disadvantage, developmental abnormalities, or the X-inactivation process is discussed.

Indexed as

Gene DeletionGenetic LinkageX ChromosomeAbortion, HabitualFemaleHumansMalePedigreePregnancy

Identifiers

PMID9245997
PMCPMC1715880
OpenAlexW2094966355

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.