Evidence map›Paper›PMID 18552978›Full record

ArticleMolecular vision2008

Identification of novel mutations in X-linked retinitis pigmentosa families and implications for diagnostic testing.

John Neidhardt, Esther Glaus, Birgit Lorenz, Christian Netzer, Yün Li, Maria Schambeck, Mariana Wittmer, Silke Feil, Renate Kirschner-Schwabe, Thomas Rosenberg and 15 more

Open access · greenAbstract read
In one paragraph

Article in Molecular vision, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
1.5field-weighted citation impact, top 18% 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

34 citing papers in PubMed, 1 synthesis or guideline pooled it, 65 citations in OpenAlex.

  1. Pooled it
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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

25 authors at 1 institution in 1 country.

John NeidhardtDivision of Medical Molecular Genetics and Gene Diagnostics, Institute of Medical Genetics, University of Zurich, Switzerland. neidhardt@medgen.uzh.ch
Esther Glaus
Birgit Lorenz
Christian Netzer
Yün Li
Maria Schambeck
Mariana Wittmer
Silke Feil
Renate Kirschner-Schwabe
Thomas Rosenberg
Frans P M Cremers
Arthur A B Bergen
Daniel Barthelmes
Husnia Baraki
Fabian Schmid
Gaby Tanner
Johannes Fleischhauer
Ulrike Orth
Christian Becker
Erika Wegscheider
Gudrun Nürnberg
Peter Nürnberg
Hanno Jörn Bolz
Andreas Gal
Wolfgang Berger
University of Zurich · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe goal of this study was to identify mutations in X-chromosomal genes associated with retinitis pigmentosa (RP) in patients from Germany, The Netherlands, Denmark, and Switzerland.

methodsIn addition to all coding exons of RP2, exons 1 through 15, 9a, ORF15, 15a and 15b of RPGR were screened for mutations. PCR products were amplified from genomic DNA extracted from blood samples and analyzed by direct sequencing. In one family with apparently dominant inheritance of RP, linkage analysis identified an interval on the X chromosome containing RPGR, and mutation screening revealed a pathogenic variant in this gene. Patients of this family were examined clinically and by X-inactivation studies.

resultsThis study included 141 RP families with possible X-chromosomal inheritance. In total, we identified 46 families with pathogenic sequence alterations in RPGR and RP2, of which 17 mutations have not been described previously. Two of the novel mutations represent the most 3'-terminal pathogenic sequence variants in RPGR and RP2 reported to date. In exon ORF15 of RPGR, we found eight novel and 14 known mutations. All lead to a disruption of open reading frame. Of the families with suggested X-chromosomal inheritance, 35% showed mutations in ORF15. In addition, we found five novel mutations in other exons of RPGR and four in RP2. Deletions in ORF15 of RPGR were identified in three families in which female carriers showed variable manifestation of the phenotype. Furthermore, an ORF15 mutation was found in an RP patient who additionally carries a 6.4 kbp deletion downstream of the coding region of exon ORF15. We did not identify mutations in 39 sporadic male cases from Switzerland.

conclusionsRPGR mutations were confirmed to be the most frequent cause of RP in families with an X-chromosomal inheritance pattern. We propose a screening strategy to provide molecular diagnostics in these families.

Indexed as

ExonsEye ProteinsFamilyFemaleGenes, DominantGenetic Diseases, X-LinkedGTP-Binding ProteinsHeterozygoteHumansInheritance PatternsIntracellular Signaling Peptides and ProteinsMaleMembrane ProteinsMutationPedigreePolymorphism, GeneticEye ProteinsGTP-Binding ProteinsIntracellular Signaling Peptides and ProteinsMembrane ProteinsRP2 protein, humanRPGR protein, human

Identifiers

PMID18552978
PMCPMC2426717
OpenAlexW2127001252

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.