Evidence map›Paper›PMID 33141049›Full record

ArticleExperimental eye research2021

Novel variants in PNPLA6 causing syndromic retinal dystrophy.

Shijing Wu, Zixi Sun, Tian Zhu, Richard G Weleber, Paul Yang, Xing Wei, Mark E Pennesi, Ruifang Sui

Open access · greenAbstract read
In one paragraph

Article in Experimental eye research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 25% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

  1. Pooled it
  2. Polyunsaturated fatty acid metabolism in the retinal pigment epithelium and its association with outer retinal disease.Mammalian genome : official journal of the International Mammalian Genome Society · 2026
    Review
  3. Review
  4. Novel variant inFrontiers in genetics · 2025
    Article
  5. Article
  6. Ophthalmic genetics · 2023
    Review
  7. Choroideremia: Toward Regulatory Approval of Retinal Gene Therapy.Cold Spring Harbor perspectives in medicine · 2023
    Article
  8. Article
  9. Article
  10. Article
  11. Insects · 2021
    Article
  12. Movement Disorders Associated with Hypogonadism.Movement disorders clinical practice · 2021
    Review
  13. Loss ofInternational journal of molecular sciences · 2021
    Article
  14. Article
  15. 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 2 institutions in 2 countries.

Shijing WuDepartment of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China.
Zixi SunDepartment of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China.
Tian ZhuDepartment of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China.
Richard G WeleberCasey Eye Institute, Oregon Health & Science University, Portland, OR, USA.
Paul YangCasey Eye Institute, Oregon Health & Science University, Portland, OR, USA.
Xing WeiDepartment of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China.
Mark E PennesiCasey Eye Institute, Oregon Health & Science University, Portland, OR, USA. Electronic address: pennesim@ohsu.edu.
Ruifang SuiDepartment of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China. Electronic address: hrfsui@163.com.
Chinese Academy of Medical Sciences & Peking Union Medical College · CNOregon Health & Science University · US

Funding

Proteomics CoreP30EY010572 · NEI · OREGON HEALTH & SCIENCE UNIVERSITY · PI John Peter Campbell · 1995 to 2026
$19.4M
Neuroprotective Mechanisms of Inosine Monophosphate Dehydrogenase Inhibitors in Retinitis PigmentosaK08EY026650 · NEI · OREGON HEALTH & SCIENCE UNIVERSITY · PI YANG, PAUL · 2016 to 2020
$1.1M
NEI NIH HHS K08 EY026650NEI NIH HHS P30 EY010572
6 · The paper itself

Abstract

PNPLA6-related disorders include several phenotypes, such as Boucher-Neuhäuser syndrome, Gordon Holmes syndrome, spastic paraplegia, photoreceptor degeneration, Oliver-McFarlane syndrome and Laurence-Moon syndrome. In this study, detailed clinical evaluations and genetic testing were performed in five (4 Chinese and 1 Caucasian/Chinese) syndromic retinal dystrophy patients. Genotype-phenotype correlations were analyzed based on review of the literatures of previously published PNPLA6-related cases. The mean age of patients and at first visit were 20.8 years (11, 12, 25, 28, 28) and 14.2 years (4, 7, 11, 24, 25), respectively. They all presented with severe chorioretinal dystrophy and profoundly decreased vision. The best corrected visual acuity (BCVA) ranged from 20/200 to 20/2000. Systemic manifestations included cerebellar ataxia, hypogonadotropic hypogonadism and hair anomalies. Six novel and three reported pathogenic variants in PNPLA6 (NM_001166111) were identified. The genotypes of the five cases are: c.3134C > T (p.Ser1045Leu) and c.3846+1G > A, c.3547C > T (p.Arg1183Trp) and c.1841+3A > G, c.3436G > A (p.Ala1146Thr) and c.2212-10A > G, c.3436G > A (p.Ala1146Thr) and c.2266C > T (p.Gln756*), c.1238_1239insC (p.Leu414Serfs*28) and c.3130A > G (p.Thr1044Ala). RT-PCR confirmed that the splicing variants indeed led to abnormal splicing. Missense variants p.Thr1044Ala, p.Ser1045Leu, p.Ala1146Thr, p.Arg1183Trp and c.3846+1G > A are located in Patatin-like phospholipase (Pat) domain. In conclusion, we report the phenotypes in five patients with PNPLA6 associated syndromic retinal dystrophy with variable systemic involvement and typical choroideremia-like fundus changes. Ocular manifestations may be the first and the only findings for years. All of our patients carried one severe deleterious variant (stop-gain or splicing variant) and one milder variant (missense variant). Retinal involvement was significantly correlated with severe deleterious variants and variants in Pat domain.

Indexed as

AcyltransferasesAdultChildChild, PreschoolElectroretinographyFemaleGenetic Association StudiesGenetic VariationGenotyping TechniquesHumansMalePedigreePhospholipasesReal-Time Polymerase Chain ReactionRetinal DystrophiesTomography, Optical CoherenceAcyltransferasesPhospholipasesPNPLA6 protein, humanBoucher-Neuhäuser syndromeChoroideremia-likeOliver-McFarlane syndromePNPLA6 geneSyndromic retinal dystrophy

Identifiers

PMID33141049
PMCPMC7855329
OpenAlexW3094087018

What OpenQuestion holds

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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.