Evidence map›Paper›PMID 33789695›Full record

ArticleOrphanet journal of rare diseases2021

Newborn screening for spinal muscular atrophy in Germany: clinical results after 2 years.

Katharina Vill, Oliver Schwartz, Astrid Blaschek, Dieter Gläser, Uta Nennstiel, Brunhilde Wirth, Siegfried Burggraf, Wulf Röschinger, Marc Becker, Ludwig Czibere and 7 more

Open access · goldAbstract read
In one paragraph

Article in Orphanet journal of rare diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 82 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
82citing papers in PubMed, 5 pooled it
17.4field-weighted citation impact, top 1% 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

82 citing papers in PubMed, 5 syntheses or guidelines pooled it, 158 citations in OpenAlex.

  1. Pooled it
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  4. The impact of threeFrontiers in neurology · 2024
    Pooled it
  5. Pooled it
  6. Article
  7. Article
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  9. Oral function tests in spinal muscular atrophy: closing the diagnostic gap in severely affected adult patients : A prospective observational study.Journal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie · 2026
    Observational
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  16. Validation on the First-Tier Fully Automated High-ThroughputInternational journal of neonatal screening · 2025
    Article
  17. Article
  18. Review
  19. Article
  20. Review

22 more citing papers are in PubMed but not listed here.

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

17 authors at 7 institutions in 1 country.

Katharina Vill *Dr. v. Hauner Children's Hospital, Department of Pediatric Neurology and Developmental Medicine, LMU - University of Munich, Lindwurmstraße 4, 80337, München, Germany.ORCID 0000-0003-1925-7538
Oliver Schwartz *Department of Pediatric Neurology, Münster University Hospital, Münster, Germany.
Astrid BlaschekDr. v. Hauner Children's Hospital, Department of Pediatric Neurology and Developmental Medicine, LMU - University of Munich, Lindwurmstraße 4, 80337, München, Germany.
Dieter GläserCenter for Human Genetics, Genetikum®, Neu-Ulm, Germany.
Uta NennstielScreening Center of the Bavarian Health and Food Safety Authority, Oberschleißheim, Germany.
Brunhilde WirthInstitute of Human Genetics, Center for Molecular Genetics Cologne and Center for Rare Diseases, University of Cologne, Cologne, Germany.
Siegfried BurggrafLabor Becker und Kollegen, Munich, Germany.
Wulf RöschingerLabor Becker und Kollegen, Munich, Germany.
Marc BeckerLabor Becker und Kollegen, Munich, Germany.
Ludwig CzibereLabor Becker und Kollegen, Munich, Germany.
Jürgen DurnerLabor Becker und Kollegen, Munich, Germany.
Katja EggermannInstitute of Human Genetics, Medical Faculty, RWTH Aachen University, Aachen, Germany.
Bernhard OlgemöllerFormerly Labor Becker, Olgemöller und Kollegen, Munich, Germany.
Erik HarmsDepartment of Pediatrics, Muenster University Hospital, Münster, Germany.
Ulrike ScharaDepartment of Pediatric Neurology, Developmental Neurology and Social Pediatrics, University of Essen, Essen, Germany.
Heike Kölbel *Department of Pediatric Neurology, Developmental Neurology and Social Pediatrics, University of Essen, Essen, Germany.
Wolfgang Müller-Felber *Dr. v. Hauner Children's Hospital, Department of Pediatric Neurology and Developmental Medicine, LMU - University of Munich, Lindwurmstraße 4, 80337, München, Germany. Wolfgang.mueller-felber@med.uni-muenchen.de.
Becker Technologies (Germany) · DELMU Klinikum · DEUniversity Hospital Münster · DEGenetikum · DEMunich University of Applied Sciences · DERWTH Aachen University · DEUniversity of Cologne · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSpinal muscular atrophy (SMA) is the most common neurodegenerative disease in childhood. Since motor neuron injury is usually not reversible, early diagnosis and treatment are essential to prevent major disability. Our objective was to assess the impact of genetic newborn screening for SMA on outcome.

methodsWe provided clinical data from 43 SMA patients, identified via polymerase chain reaction of the SMN1 gene from dried blood spots between January 2018 and January 2020 in Germany. Follow-up included neurophysiological examinations and standardized physiotherapeutic testing.

resultsDetection of SMA with newborn screening was consistent with known incidence in Germany. Birth prevalence was 1:6910; 39.5% had 2 SMN2 copies, 23% had 3 SMN2 copies, 32.5% had 4 copies, and 4.5% had 5 copies of the SMN2 gene. Treatment with SMA-specific medication could be started at the age of 14-39 days in 21 patients. Pre-symptomatically treated patients remained throughout asymptomatic within the observation period. 47% of patients with 2 SMN2 copies showed early, presumably intrauterine onset of disease. These patients reached motor milestones with delay; none of them developed respiratory symptoms. Untreated children with 2 SMN2 copies died. Untreated children with 3 SMN2 copies developed proximal weakness in their first year. In patients with ≥ 4 SMN2 copies, a follow-up strategy of "watchful waiting" was applied despite the fact that one of them was treated from the age of 6 months. Two infant siblings with 4 SMN2 copies were identified with a missed diagnosis of SMA type 3.

conclusionIdentification of newborns with infantile SMA and prompt SMA-specific treatment substantially improves neurodevelopmental outcome, and we recommend implementation in the public newborn screening in countries where therapy is available. Electrophysiology is a relevant parameter to support the urgency of therapy. There has to be a short time interval between a positive screening result and referral to a therapy-ready specialized treatment center.

Indexed as

Muscular Atrophy, SpinalNeurodegenerative DiseasesSpinal Muscular Atrophies of ChildhoodChildGermanyHumansInfantInfant, NewbornNeonatal ScreeningSurvival of Motor Neuron 1 ProteinSurvival of Motor Neuron 1 Protein

Identifiers

PMID33789695
PMCPMC8011100
OpenAlexW3146491500

What OpenQuestion holds

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LicenceCC BY
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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.