Evidence map›Paper›PMID 24735900›Full record

ArticleOrphanet journal of rare diseases2014

Clinical spectrum of females with HCCS mutation: from no clinical signs to a neonatal lethal form of the microphthalmia with linear skin defects (MLS) syndrome.

Vanessa A van Rahden, Isabella Rau, Sigrid Fuchs, Friederike K Kosyna, Hiram Larangeira de Almeida, Helen Fryssira, Bertrand Isidor, Anna Jauch, Madeleine Joubert, Augusta M A Lachmeijer and 3 more

Open access · goldAbstract read
In one paragraph

Article in Orphanet journal of rare diseases, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.9field-weighted citation impact, top 13% 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

19 citing papers in PubMed, 34 citations in OpenAlex.

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  12. An update on oculocerebrocutaneous (Delleman-Oorthuys) syndrome.American journal of medical genetics. Part C, Seminars in medical genetics · 2018
    Review
  13. Article
  14. Article
  15. Review
  16. Spectrum of combined respiratory chain defects.Journal of inherited metabolic disease · 2015
    Review
  17. Article
  18. Article
  19. Head and Neck Clinical Signs Associated With Diseases: A Scoping Review.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
    Article
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

13 authors at 11 institutions in 6 countries.

Vanessa A van Rahden
Isabella Rau
Sigrid Fuchs
Friederike K Kosyna
Hiram Larangeira de Almeida
Helen Fryssira
Bertrand Isidor
Anna Jauch
Madeleine Joubert
Augusta M A Lachmeijer
Christiane Zweier
Ute Moog
Kerstin KutscheInstitute of Human Genetics, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany. kkutsche@uke.de.
Universität Hamburg · DEAmsterdam UMC Location VUmc · NLCentre Hospitalier Universitaire de Nantes · FRFriedrich-Alexander-Universität Erlangen-Nürnberg · DEHeidelberg University · DEInserm · FRInstitute of Human Genetics · PLNational and Kapodistrian University of Athens · GRUniversidade Católica de Pelotas · BRUniversity Medical Center Hamburg-Eppendorf · DEUniversity of Lübeck · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSegmental Xp22.2 monosomy or a heterozygous HCCS mutation is associated with the microphthalmia with linear skin defects (MLS) or MIDAS (microphthalmia, dermal aplasia, and sclerocornea) syndrome, an X-linked disorder with male lethality. HCCS encodes the holocytochrome c-type synthase involved in mitochondrial oxidative phosphorylation (OXPHOS) and programmed cell death.

methodsWe characterized the X-chromosomal abnormality encompassing HCCS or an intragenic mutation in this gene in six new female patients with an MLS phenotype by cytogenetic analysis, fluorescence in situ hybridization, sequencing, and quantitative real-time PCR. The X chromosome inactivation (XCI) pattern was determined and clinical data of the patients were reviewed.

resultsTwo terminal Xp deletions of ≥ 11.2 Mb, two submicroscopic copy number losses, one of ~850 kb and one of ≥ 3 Mb, all covering HCCS, 1 nonsense, and one mosaic 2-bp deletion in HCCS are reported. All females had a completely (>98:2) or slightly skewed (82:18) XCI pattern. The most consistent clinical features were microphthalmia/anophthalmia and sclerocornea/corneal opacity in all patients and congenital linear skin defects in 4/6. Additional manifestations included various ocular anomalies, cardiac defects, brain imaging abnormalities, microcephaly, postnatal growth retardation, and facial dysmorphism. However, no obvious clinical sign was observed in three female carriers who were relatives of one patient.

conclusionOur findings showed a wide phenotypic spectrum ranging from asymptomatic females with an HCCS mutation to patients with a neonatal lethal MLS form. Somatic mosaicism and the different ability of embryonic cells to cope with an OXPHOS defect and/or enhanced cell death upon HCCS deficiency likely underlie the great variability in phenotypes.

Indexed as

ChildChild, PreschoolChromosomes, Human, XFemaleGenetic Diseases, X-LinkedHumansInfantMicrophthalmosSkinSkin AbnormalitiesX Chromosome Inactivation

Identifiers

PMID24735900
PMCPMC4021606
OpenAlexW2105784331

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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.