Evidence map›Paper›PMID 32981931›Full record

SynthesisGenetics in medicine : official journal of the American College of Medical Genetics2021

Impact of newborn screening and quality of therapy on the neurological outcome in glutaric aciduria type 1: a meta-analysis.

Nikolas Boy, Katharina Mengler, Jana Heringer-Seifert, Georg F Hoffmann, Sven F Garbade, Stefan Kölker

Open access · hybridAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Genetics in medicine : official journal of the American College of Medical Genetics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
5.7field-weighted citation impact, top 3% 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

32 citing papers in PubMed, 70 citations in OpenAlex.

  1. Systemic AAV-hInternational journal of molecular sciences · 2026
    Article
  2. Article
  3. Article
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  5. Brain morphometry and cognition in late-onset glutaric aciduria type 1: scoping review and novel insights from a case report.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Article
  6. Review
  7. Observational
  8. Article
  9. Odd-Chain Dicarboxylic Acid Feeding Produces a Glutaric Aciduria Type 1-Like Metabolic Signature in Mice.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    Article
  10. Trial Readiness: Understanding the Natural History of Rare Diseases.Journal of inherited metabolic disease · 2025
    Review
  11. Therapeutic AASS inhibition by AAV-miRNA rescues glutaric aciduria type I severe phenotype in mice.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
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  20. 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

6 authors at 1 institution in 1 country.

Nikolas BoyDivision of Child Neurology and Metabolic Medicine, Centre for Child and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany. nikolas.boy@med.uni-heidelberg.de.ORCID http://orcid.org/0000-0001-7665-6602
Katharina MenglerDivision of Child Neurology and Metabolic Medicine, Centre for Child and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany.
Jana Heringer-SeifertDivision of Child Neurology and Metabolic Medicine, Centre for Child and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany.
Georg F HoffmannDivision of Child Neurology and Metabolic Medicine, Centre for Child and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany.
Sven F GarbadeDivision of Child Neurology and Metabolic Medicine, Centre for Child and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany.
Stefan KölkerDivision of Child Neurology and Metabolic Medicine, Centre for Child and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany.
Heidelberg University · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeGlutaric aciduria type 1 (GA1), a rare inherited neurometabolic disorder, results in a complex movement disorder (MD) with predominant dystonia if untreated. Implementation into newborn screening (NBS) programs and adherence to recommended therapy are thought to improve the neurological outcome.

methodsSystematic literature search for articles published from 2000 to 2019 was performed using the PRISMA protocol. Studies reporting on more than one individual identified by NBS were included. We investigated effects of interventional and noninterventional variables on neurological outcome.

resultsFifteen publications reporting on 647 GA1 patients were included. In the NBS group (n = 261 patients), 195 patients remained asymptomatic (74.7%), while 66 patients (25.3%) developed a MD. Compared with the NBS group, a much higher proportion of patients (349/386; 90.4%; p < 0.0001) diagnosed after the manifestation of neurologic symptoms had a MD and an abnormal motor development (285/349; 81.7%; p < 0.0001). For NBS patients, deviations from the recommended diet increased the risk of insidious onset MD, while delayed start of emergency treatment increased the risk of acute onset MD.

conclusionsThis meta-analysis demonstrates that NBS programs for GA1 have an overall positive effect on the neurological outcome of affected individuals but their success critically depends on the quality of therapy.

Indexed as

Amino Acid Metabolism, Inborn ErrorsBrain Diseases, MetabolicGlutaryl-CoA DehydrogenaseHumansInfant, NewbornNeonatal ScreeningGlutaryl-CoA Dehydrogenaseglutaric acidemia type 1glutaric aciduria type 1newborn screening; outcome; meta-analysis

Identifiers

PMID32981931
PMCPMC7790745
OpenAlexW3088174141

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.