Evidence map›Paper›PMID 22473088›Full record

ArticleEuropean journal of human genetics : EJHG2012

The phenotype associated with a large deletion on MECP2.

Ami Bebbington, Jenny Downs, Alan Percy, Mercé Pineda, Bruria Ben Zeev, Nadia Bahi-Buisson, Helen Leonard

Registry-linked trialAbstract read
In one paragraph

Article in European journal of human genetics : EJHG, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00299312 (Rett Syndrome Natural History), which is not on this map. Cited by 19 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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.

NCT00299312 completednot on this map

Rett Syndrome Natural History: Genetic and Physical Characteristics of Rett Syndrome

TypeobservationalSponsorUniversity of Alabama at BirminghamRan2006 to 2015Enrolled10ConditionsRett Syndrome, MECP2 Duplication Disorder, Rett-related Disorder
3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Rett syndrome in Ireland: a demographic study.Orphanet journal of rare diseases · 2024
    Article
  5. Enablers and barriers in dental attendance in Rett syndrome: an international observational study.Special care in dentistry : official publication of the American Association of Hospital Dentists, the Academy of Dentistry for the Handicapped, and the American Society for Geriatric Dentistry · 2022
    Observational
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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

7 authors.

Ami BebbingtonTelethon Institute for Child Health Research, Centre for Child Health Research, University of Western Australia, Perth, Western Australia, Australia.
Jenny Downs
Alan Percy
Mercé Pineda
Bruria Ben Zeev
Nadia Bahi-Buisson
Helen Leonard

Funding

Training and Career Development ComponentU54HD061222 · NICHD · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI PERCY, ALAN KENNETH · 2009 to 2019
$12.4M
UAB MENTAL RETARDATION RESEARCH CENTER (MRRC)P30HD038985 · NICHD · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI BRENNER, MICHAEL · 2000 to 2012
$8.6M
Rett syndrome: determinants of outcome and burdenR01HD043100 · NICHD · UNIVERSITY OF WESTERN AUSTRALIA · PI LEONARD, HELEN M · 2003 to 2007
$838k
NICHD NIH HHS 5R01HD043100-05NICHD NIH HHS HD38985NICHD NIH HHS P30 HD038985NICHD NIH HHS R01 HD043100NICHD NIH HHS U54 HD061222
6 · The paper itself

Abstract

Multiplex ligation-dependent Probe Amplification (MLPA) has become available for the detection of a large deletion on the MECP2 gene allowing genetic confirmation of previously unconfirmed cases of clinical Rett syndrome. This study describes the phenotype of those with a large deletion and compares with those with other pathogenic MECP2 mutations. Individuals were ascertained from the Australian Rett Syndrome and InterRett databases with data sourced from family and clinician questionnaires, and two case studies were constructed from the longitudinal Australian data. Regression and survival analysis were used to compare severity and age of onset of symptoms in those with and without a large deletion. Data were available for 974 individuals including 51 with a large deletion and ages ranged from 1 year 4 months to 49 years (median 9 years). Those with a large deletion were more severely affected than those with other mutation types. Specifically, individuals with large deletions were less likely to have learned to walk (OR 0.42, 95% CI: 0.22-0.79, P=0.007) and to be currently walking (OR 0.53, 95% CI: 0.26-1.10, P=0.089), and were at higher odds of being in the most severe category of gross motor function (OR 1.84, 95% CI: 0.98-3.48, P=0.057) and epilepsy (OR 2.72, 95% CI: 1.38-5.37, P=0.004). They also developed epilepsy, scoliosis, hand stereotypies and abnormal breathing patterns at an earlier age. We have described the disorder profile associated with a large deletion from the largest sample to date and have found that the phenotype is severe with motor skills particularly affected.

Indexed as

Base SequenceSequence DeletionAdolescentAdultAge of OnsetAustraliaChildChild, PreschoolFemaleGenetic Association StudiesGenotypeHumansInfantMaleMethyl-CpG-Binding Protein 2Middle AgedMECP2 protein, humanMethyl-CpG-Binding Protein 2

Identifiers

PMID22473088
PMCPMC3421119

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Registered trials

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.