Evidence map›Paper›PMID 32881395›Full record

ArticleMolecular genetics & genomic medicine2020

The first case of a mosaic superficial epidermolytic ichthyosis diagnosed by Ultra-Deep Sequence.

Yue Li, Ruhong Cheng, Jianying Liang, Zhirong Yao, Ming Li

Open access · goldAbstract readCase Reports
In one paragraph

Article in Molecular genetics & genomic medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.4field-weighted citation impact, top 41% 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

4 citing papers in PubMed, 6 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. 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

5 authors at 1 institution in 1 country.

Yue LiDepartment of Dermatology, Xinhua Hospital, Shanghai, China.
Ruhong ChengDepartment of Dermatology, Xinhua Hospital, Shanghai, China.
Jianying LiangDepartment of Dermatology, Xinhua Hospital, Shanghai, China.
Zhirong YaoDepartment of Dermatology, Xinhua Hospital, Shanghai, China.
Ming LiDepartment of Dermatology, Xinhua Hospital, Shanghai, China.ORCID 0000-0003-3053-2756
Shanghai Jiao Tong University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSuperficial epidermolytic ichthyosis (SEI), known as ichthyosis bullosa of Siemens (IBS; OMIM No. 146800) before, is a type of keratinopathic ichthyosis due to the KRT2 mutations (NM_000423.3; OMIM No. 600194). Here, we report the first case of SEI caused by a KRT2 mosaic mutation.

methodsWe presented the clinical data of a 5-year-old Chinese boy who suffered from SEI. The histopathological examination and immunofluorescence were performed to rule out immunobullous skin diseases and diseases with subepidermal blisters. Genomic DNA samples were extracted from the lesion tissue and next-generation sequencing was performed. We also confirmed the variant allele frequency (VAF) in different tissues by an Ultra-Deep Sequencing technology.

resultsThe patient presented with blisters on the lower extremities and linear, superficially hyperkeratotic lesions. Immunofluorescence of IgG, IgA, IgM, C3, C4, and C1q were negative, and the histopathological results showed intraepidermal blisters containing lymphocytes and eosinophils. A heterozygous missense mutation, c.G1459A (p. Glu487Lys), in exon 7 of the KRT2 gene was detected at a 31.17% allele frequency. The same mutation p. Glu487Lys has been described several times in the literature.

conclusionThus, in our patient, the mosaic mutation explains the blaschkoid ichthyosiform phenotype. To our knowledge, this is the first case of SEI with a KRT2 mosaic mutation.

Indexed as

MosaicismChildGenetic TestingHeterozygoteHigh-Throughput Nucleotide SequencingHumansHyperkeratosis, EpidermolyticKeratin-2MaleMutation, MissensePhenotypeSequence Analysis, DNAKeratin-2KRT2 protein, humanKRT2somatic mosaicismsuperficial epidermolytic ichthyosisUltra-Deep Sequence

Identifiers

PMID32881395
PMCPMC7667337
OpenAlexW3082082787

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.