Evidence map›Paper›PMID 35925862›Full record

ArticleHuman molecular genetics2023

De novo variants cause complex symptoms in HSP-ATL1 (SPG3A) and uncover genotype-phenotype correlations.

Julian E Alecu, Afshin Saffari, Catherine Jordan, Siddharth Srivastava, Craig Blackstone, Darius Ebrahimi-Fakhari

Erratum issuedOpen access · greenAbstract read
In one paragraph

Article in Human molecular genetics, 2023. 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 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.7field-weighted citation impact, top 17% 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

9 citing papers in PubMed, 17 citations in OpenAlex.

  1. Observational
  2. Article
  3. Article
  4. Quantitative natural history modeling of HPDL-related disease based on cross-sectional data reveals genotype-phenotype correlations.Genetics in medicine : official journal of the American College of Medical Genetics · 2025
    Article
  5. Article
  6. Article
  7. Review
  8. Plasma Neurofilament Light Chain Is Elevated in Adaptor Protein Complex 4-Related Hereditary Spastic Paraplegia.Movement disorders : official journal of the Movement Disorder Society · 2023
    Article
  9. Reply to: Early-Onset and Severe Complex Hereditary Spastic Paraplegia Caused by De Novo Variants in SPAST.Movement disorders : official journal of the Movement Disorder Society · 2023
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 2 countries.

Julian E AlecuDepartment of Neurology, F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.ORCID 0000-0002-1420-9775
Afshin SaffariDepartment of Neurology, F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.
Catherine JordanDepartment of Neurology, F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.
Siddharth SrivastavaDepartment of Neurology, F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.ORCID 0000-0001-7008-1879
Craig BlackstoneMovement Disorders Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.ORCID 0000-0003-1261-9655
Darius Ebrahimi-FakhariDepartment of Neurology, F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.ORCID 0000-0002-0026-4714
Boston Children's Hospital · USHarvard University · US

Funding

Genetic Analysis and Manipulation Core (GAEC)P50HD105351 · NICHD · BOSTON CHILDREN'S HOSPITAL · PI Hisashi Umemori · 2021 to 2026
$9.4M
Development of a Translational Research Platform to Understand and treat Defective Protein Trafficking in Childhood-Onset Hereditary Spastic ParaplegiaK08NS123552 · NINDS · BOSTON CHILDREN'S HOSPITAL · PI EBRAHIMI-FAKHARI, DARIUS · 2021 to 2025
$1.1M
Investigating the Genetic Landscape of Cerebral PalsyK23NS119666 · NINDS · BOSTON CHILDREN'S HOSPITAL · PI SRIVASTAVA, SIDDHARTH · 2021 to 2025
$1.1M
NICHD NIH HHS P50 HD105351NINDS NIH HHS K08 NS123552NINDS NIH HHS K23 NS119666
6 · The paper itself

Abstract

Pathogenic variants in ATL1 are a known cause of autosomal-dominantly inherited hereditary spastic paraplegia (HSP-ATL1, SPG3A) with a predominantly 'pure' HSP phenotype. Although a relatively large number of patients have been reported, no genotype-phenotype correlations have been established for specific ATL1 variants. Confronted with five children carrying de novo ATL1 variants showing early, complex and severe symptoms, we systematically investigated the molecular and phenotypic spectrum of HSP-ATL1. Through a cross-sectional analysis of 537 published and novel cases, we delineate a distinct phenotype observed in patients with de novo variants. Guided by this systematic phenotyping approach and structural modelling of disease-associated variants in atlastin-1, we demonstrate that this distinct phenotypic signature is also prevalent in a subgroup of patients with inherited ATL1 variants and is largely explained by variant localization within a three-dimensional mutational cluster. Establishing genotype-phenotype correlations, we find that symptoms that extend well beyond the typical pure HSP phenotype (i.e. neurodevelopmental abnormalities, upper limb spasticity, bulbar symptoms, peripheral neuropathy and brain imaging abnormalities) are prevalent in patients with variants located within this mutational cluster.

Indexed as

Spastic Paraplegia, HereditaryCross-Sectional StudiesDNA Mutational AnalysisGTP-Binding ProteinsHumansMembrane ProteinsMutationPedigreePhenotypeATL1 protein, humanGTP-Binding ProteinsMembrane Proteins

Identifiers

PMID35925862
PMCPMC9838092
OpenAlexW4289782493

What OpenQuestion holds

Textmetadata
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.