Evidence map›Paper›PMID 25593508›Full record

ArticleMolecular vision2014

Identification of novel CYP4V2 gene mutations in 92 Chinese families with Bietti's crystalline corneoretinal dystrophy.

Xiao Hong Meng, Hong Guo, Hai Wei Xu, Qi You Li, Xin Jin, Yun Bai, Shi Ying Li, Zheng Qin Yin

Open access · greenAbstract readCase Reports
In one paragraph

Article in Molecular vision, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
0.7field-weighted citation impact, top 31% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

  1. Pooled it
  2. Bietti crystalline dystrophy in Türkiye: A genetic crossroads between Asia and Europe.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
    Article
  3. Article
  4. Review
  5. Clinical and genetic characterization of a large cohort of Chinese patients with Bietti crystalline retinopathy.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2024
    Article
  6. Article
  7. Article
  8. Article
  9. A novel mutation ofInternational journal of ophthalmology · 2022
    Article
  10. [Generation and characterization ofBeijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences · 2021
    Article
  11. Article
  12. Article
  13. Review
  14. Journal of current ophthalmology · 2019
    Article
  15. Novel mutations inMolecular vision · 2019
    Article
  16. Current perspectives in Bietti crystalline dystrophy.Clinical ophthalmology (Auckland, N.Z.) · 2019
    Article
  17. Comprehensive screening ofMolecular vision · 2018
    Article
  18. Article
  19. Journal of ophthalmology · 2017
    Article
  20. 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

8 authors at 1 institution in 1 country.

Xiao Hong MengSouthwest Hospital, Southwest Eye Hospital, Third Military Medical University, Chongqing, China ; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, PR China.
Hong GuoDepartment of Medical Genetics, Third Military Medical University, Chongqing, PR China.
Hai Wei XuSouthwest Hospital, Southwest Eye Hospital, Third Military Medical University, Chongqing, China ; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, PR China.
Qi You LiSouthwest Hospital, Southwest Eye Hospital, Third Military Medical University, Chongqing, China ; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, PR China.
Xin JinSouthwest Hospital, Southwest Eye Hospital, Third Military Medical University, Chongqing, China ; Department of Ophthalmology, Chinese PLA General Hospital, Beijing, PR China.
Yun BaiDepartment of Medical Genetics, Third Military Medical University, Chongqing, PR China.
Shi Ying LiSouthwest Hospital, Southwest Eye Hospital, Third Military Medical University, Chongqing, China ; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, PR China.
Zheng Qin YinSouthwest Hospital, Southwest Eye Hospital, Third Military Medical University, Chongqing, China ; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, PR China.
Army Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo characterize the spectrum of CYP4V2 gene mutations in 92 unrelated Chinese probands with Bietti's crystalline dystrophy (BCD) and to describe the molecular and clinical characteristics of four novel CYP4V2 mutations associated with BCD.

methodsAll study participants underwent a complete ophthalmological examination. Mutational screening of CYP4V2 coding regions and flanking intron sequences was examined via directional Sanger sequencing, with allele separation confirmed by screening other family members. Subsequent in silico analysis of the mutational consequence on protein function was undertaken, with the impact of the novel mutation on pre-mRNA splicing examined via RT-PCR.

resultsFifteen disease-causing variants were identified in 92 probands with BCD, including four novel mutations and eleven previously reported mutations. The most prevalent mutation was c.802_810del17insGC, which was detected in 69 unrelated families, with an allele frequency of 52.7% (97/184). Homozygosity was revealed in 35 unrelated families, and compound heterozygosity was observed in 43 subjects. Four patients harbored four novel variants, with these mutations cosegregated within all affected individuals and were not found in unaffected family members and 100 unrelated controls. Transcriptional analysis of a novel splice mutation revealed altered RNA splicing. In silico analysis predicted that the missense variant, p.Tyr343Asp, disrupted the CYP4V2 surface electrostatic potential distribution and spatial conformation. Among the patients with four novel mutations, genotype did not always correlate with age at onset, disease course, or electroretinogram (ERG) changes, with phenotypic variations even noted within the same genotype.

conclusionsThe c.802_810del17insCG mutation was the most common mutation in the 92 Chinese probands with BCD examined. Four novel mutations were identified, contributing to the spectrum of CYP4V2 mutations associated with BCD, with no clear link established between disease phenotype and genotype.

Indexed as

MutationAdultAlternative SplicingAmino Acid SequenceAsian PeopleBase SequenceChinaCorneal Dystrophies, HereditaryCytochrome P-450 Enzyme SystemCytochrome P450 Family 4DNA Mutational AnalysisFemaleGene FrequencyGenetic Association StudiesHumansINDEL MutationCYP4V2 protein, humanCytochrome P-450 Enzyme SystemCytochrome P450 Family 4

Identifiers

PMID25593508
PMCPMC4287718
OpenAlexW1641109391

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.