Evidence map›Paper›PMID 32126152›Full record

ArticleHuman mutation2020

Type II Alexander disease caused by splicing errors and aberrant overexpression of an uncharacterized GFAP isoform.

Guy Helman, Asako Takanohashi, Tracy L Hagemann, Ming D Perng, Marzena Walkiewicz, Sarah Woidill, Sunetra Sase, Zachary Cross, Yangzhu Du, Ling Zhao and 8 more

Erratum issuedOpen access · greenAbstract read
In one paragraph

Article in Human mutation, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.3field-weighted citation impact, top 21% 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

16 citing papers in PubMed, 24 citations in OpenAlex.

  1. Review
  2. Genotype-Phenotype Association for 14Neurology. Genetics · 2025
    Article
  3. Review
  4. Review
  5. Article
  6. Review
  7. Review
  8. Review
  9. Review
  10. Article
  11. Article
  12. Alexander disease: models, mechanisms, and medicine.Current opinion in neurobiology · 2022
    Review
  13. Article
  14. New GFAP splice isoform (GFAPµ) differentially expressed in glioma translates into 21 kDa N-terminal GFAP protein.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2021
    Article
  15. Review
  16. GFAP at 50.ASN neuro
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

18 authors at 8 institutions in 3 countries.

Guy HelmanMurdoch Children's Research Institute, The Royal Children's Hospital, Parkville, Melbourne, Australia.ORCID 0000-0002-4784-7423
Asako TakanohashiDivision of Neurology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
Tracy L HagemannWaisman Center, University of Wisconsin-Madison, Madison, Wisconsin.
Ming D PerngInstitute of Molecular Medicine, College of Life Sciences, National Tsing Hua University, Hsinchu, Taiwan.
Marzena WalkiewiczMurdoch Children's Research Institute, The Royal Children's Hospital, Parkville, Melbourne, Australia.
Sarah WoidillDivision of Neurology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
Sunetra SaseDivision of Neurology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
Zachary CrossDivision of Neurology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
Yangzhu DuDepartment of Pathology and Laboratory Medicine, Human Immunology Core, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
Ling ZhaoDepartment of Pathology and Laboratory Medicine, Human Immunology Core, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
Amy WaldmanDivision of Neurology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
Bret C HaakeRegions Hospital, Saint Paul, Minnesota.
Ali FatemiMoser Center for Leukodystrophies, Kennedy Krieger Institute, Johns Hopkins University, Baltimore, Maryland.
Michael BrennerDepartment of Neurobiology, University of Alabama at Birmingham, Birmingham, Alabama.
Omar SherbiniDivision of Neurology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
Albee MessingWaisman Center, University of Wisconsin-Madison, Madison, Wisconsin.
Adeline VanderverDivision of Neurology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
Cas SimonsMurdoch Children's Research Institute, The Royal Children's Hospital, Parkville, Melbourne, Australia.ORCID 0000-0003-3147-8042
Children's Hospital of Philadelphia · USRoyal Children's Hospital · AUUniversity of Pennsylvania · USUniversity of Wisconsin–Madison · USKennedy Krieger Institute · USNational Tsing Hua University · TWRegions Hospital · USUniversity of Alabama at Birmingham · US

Funding

UNIVERSITY OF PENNSYLVANIA CAN CTR SUPPORT GRANTP30CA016520 · NCI · UNIVERSITY OF PENNSYLVANIA · PI Robert H. Vonderheide · 1985 to 2026
$222.3M
Validation of the GMFC-MLDU54NS115052 · NINDS · CHILDREN'S HOSP OF PHILADELPHIA · PI Laura Ann Adang, FLORIAN S EICHLER · 2019 to 2026
$14.3M
Sleep and Circadian Dysfunction, Brain and Neurobehavioral Development in AutismP50HD103538 · NICHD · HUGO W. MOSER RES INST KENNEDY KRIEGER · PI S. Ali Fatemi, Bradley L Schlaggar · 2020 to 2026
$9.9M
Waisman Intellectual and Developmental Disabilities Research Center Down Syndrome RegistryU54HD090256 · NICHD · UNIVERSITY OF WISCONSIN-MADISON · PI CHANG, QIANG · 2016 to 2020
$6.0M
Patient-derived iPS cells as model systems for AxDP01HD076892 · NICHD · UNIVERSITY OF WISCONSIN-MADISON · PI NEDERGAARD, MAIKEN · 2014 to 2018
$6.0M
NCI NIH HHS P30 CA016520NICHD NIH HHS P01 HD076892NICHD NIH HHS P50 HD103538NICHD NIH HHS U54 HD090256NINDS NIH HHS U54 NS115052
6 · The paper itself

Abstract

Alexander disease results from gain-of-function mutations in the gene encoding glial fibrillary acidic protein (GFAP). At least eight GFAP isoforms have been described, however, the predominant alpha isoform accounts for ∼90% of GFAP protein. We describe exonic variants identified in three unrelated families with Type II Alexander disease that alter the splicing of GFAP pre-messenger RNA (mRNA) and result in the upregulation of a previously uncharacterized GFAP lambda isoform (NM_001363846.1). Affected members of Family 1 and Family 2 shared the same missense variant, NM_001363846.1:c.1289G>A;p.(Arg430His) while in Family 3 we identified a synonymous variant in the adjacent nucleotide, NM_001363846.1:c.1290C>A;p.(Arg430Arg). Using RNA and protein analysis of brain autopsy samples, and a mini-gene splicing reporter assay, we demonstrate both variants result in the upregulation of the lambda isoform. Our approach demonstrates the importance of characterizing the effect of GFAP variants on mRNA splicing to inform future pathophysiologic and therapeutic study for Alexander disease.

Indexed as

RNA SplicingAdultAgedAlexander DiseaseChildFemaleGlial Fibrillary Acidic ProteinHumansMaleMiddle AgedMutation, MissensePedigreeProtein IsoformsYoung AdultGFAP protein, humanGlial Fibrillary Acidic ProteinProtein Isoformsaberrant splicingAlexander diseaseleukodystrophy

Identifiers

PMID32126152
PMCPMC7491703
OpenAlexW3009288093

What OpenQuestion holds

Textmetadata
LicenceTDM
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.