Evidence map›Paper›PMID 35101335›Full record

ArticleGenetics in medicine : official journal of the American College of Medical Genetics2022

Expanding the genotype and phenotype spectrum of SYT1-associated neurodevelopmental disorder.

Holly Melland, Fabian Bumbak, Anna Kolesnik-Taylor, Elise Ng-Cordell, Abinayah John, Panayiotis Constantinou, Shelagh Joss, Martin Larsen, Christina Fagerberg, Lone Walentin Laulund and 16 more

Open access · hybridAbstract read
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Article in Genetics in medicine : official journal of the American College of Medical Genetics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
7.3field-weighted citation impact, top 2% 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

26 citing papers in PubMed, 43 citations in OpenAlex.

  1. Article
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  4. Age-Related Characteristics of SYT1-Associated Neurodevelopmental Disorder.Annals of clinical and translational neurology · 2026
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  14. A Complex Chromosome Rearrangement DisruptingCase reports in genetics · 2025
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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

26 authors at 17 institutions in 7 countries.

Holly MellandThe Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia; Melbourne Dementia Research Centre, The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia.
Fabian BumbakDepartment of Molecular and Cellular Biochemistry, College of Arts + Sciences, Indiana University Bloomington, Bloomington, IN.
Anna Kolesnik-TaylorMRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, United Kingdom.
Elise Ng-CordellMRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, United Kingdom.
Abinayah JohnMRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, United Kingdom.
Panayiotis ConstantinouDepartment of Clinical Genetics, Queen Elizabeth University Hospital, Glasgow, United Kingdom.
Shelagh JossDepartment of Clinical Genetics, Queen Elizabeth University Hospital, Glasgow, United Kingdom.
Martin LarsenDepartment of Clinical Genetics, Odense University Hospital, Odense, Denmark.
Christina FagerbergDepartment of Clinical Genetics, Odense University Hospital, Odense, Denmark.
Lone Walentin LaulundHans Christian Andersen Children's Hospital, Odense University Hospital, Odense, Denmark.
Jenny ThiesDepartment of Pediatrics, Division of Genetic Medicine, Seattle Children's Hospital, Seattle, WA.
Frances EmslieSouth West Thames Regional Genetics Service and St George's University of London, London, United Kingdom.
Marjolein WillemsenRadboud University Medical Center, Nijmegen, The Netherlands.
Tjitske KleefstraRadboud University Medical Center, Nijmegen, The Netherlands; Vincent van Gogh Centre for Neuropsychiatry, Venray, The Netherlands.
Rolf PfundtRadboud University Medical Center, Nijmegen, The Netherlands.
Rebekah BarrickChildren's Hospital of Orange County, Orange, CA.
Richard ChangChildren's Hospital of Orange County, Orange, CA.
Lucy LoongOxford Centre for Genomic Medicine, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom.
Majid AlfadhelGenetics and Precision Medicine department, King Abdullah Specialized Children Hospital, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia; Medical Genomics Research Department, King Abdullah International Medical Research Center, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia; College of Medicine, King Saud bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia.
Jasper van der SmagtUtrecht University Medical Centre, Utrecht, The Netherlands.
Mathilde NizonService de Génétique Médicale, CHU de Nantes, INSERM, Université de Nantes, Nantes, France.
Manju A KurianDevelopmental Neurosciences Programme, UCL Great Ormond Street Institute of Child Health, University College London, London, United Kingdom.
Daniel J ScottThe Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia.
Joshua J ZiarekDepartment of Molecular and Cellular Biochemistry, College of Arts + Sciences, Indiana University Bloomington, Bloomington, IN.
Sarah L GordonThe Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia; Melbourne Dementia Research Centre, The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia.
Kate BakerMRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, United Kingdom; Department of Medical Genetics, University of Cambridge, Cambridge, United Kingdom. Electronic address: kate.baker@mrc-cbu.cam.ac.uk.
MRC Cognition and Brain Sciences Unit · GBOdense University Hospital · DKChildren's Hospital of Orange County · USFlorey Institute of Neuroscience and Mental Health · AUIndiana University Bloomington · USQueen Elizabeth University Hospital · GBRadboud University Nijmegen · NLNantes Université · FRNational Guard Health Affairs · SAOxford University Hospitals NHS Trust · GBRadboud University Medical Center · NLSeattle Children's Hospital · USSt George's, University of London · GBUniversity College London · GBUniversity of Cambridge · GBUniversity of Melbourne · AUUtrecht University · NL

Funding

Medical Research Council MC_UU_00005/16Medical Research Council MC_UU_00030/3Wellcome Trust
6 · The paper itself

Abstract

purposeSynaptotagmin-1 (SYT1) is a critical mediator of neurotransmitter release in the central nervous system. Previously reported missense SYT1 variants in the C2B domain are associated with severe intellectual disability, movement disorders, behavioral disturbances, and electroencephalogram abnormalities. In this study, we expand the genotypes and phenotypes and identify discriminating features of this disorder.

methodsWe describe 22 individuals with 15 de novo missense SYT1 variants. The evidence for pathogenicity is discussed, including the American College of Medical Genetics and Genomics/Association for Molecular Pathology criteria, known structure-function relationships, and molecular dynamics simulations. Quantitative behavioral data for 14 cases were compared with other monogenic neurodevelopmental disorders.

resultsFour variants were located in the C2A domain with the remainder in the C2B domain. We classified 6 variants as pathogenic, 4 as likely pathogenic, and 5 as variants of uncertain significance. Prevalent clinical phenotypes included delayed developmental milestones, abnormal eye physiology, movement disorders, and sleep disturbances. Discriminating behavioral characteristics were severity of motor and communication impairment, presence of motor stereotypies, and mood instability.

conclusionNeurodevelopmental disorder-associated SYT1 variants extend beyond previously reported regions, and the phenotypic spectrum encompasses a broader range of severities than initially reported. This study guides the diagnosis and molecular understanding of this rare neurodevelopmental disorder and highlights a key role for SYT1 function in emotional regulation, motor control, and emergent cognitive function.

Indexed as

Intellectual DisabilityMovement DisordersNeurodevelopmental DisordersSynaptotagmin ICalciumGenotypeHumansPhenotypeCalciumSynaptotagmin ISYT1 protein, humanIntellectual disabilityNeurotransmissionSynapseSynaptic vesicleSynaptotagmin

Identifiers

PMID35101335
PMCPMC8986325
OpenAlexW4226359570

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LicenceCC BY
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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.