Evidence map›Paper›PMID 34661997›Full record

ReviewBrain and behavior2021

Acute porphyrias - A neurological perspective.

Lea M Gerischer, Franziska Scheibe, Astrid Nümann, Martin Köhnlein, Ulrich Stölzel, Andreas Meisel

Open access · goldAbstract readReview
In one paragraph

Review in Brain and behavior, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 8% 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

28 citing papers in PubMed, 1 synthesis or guideline pooled it, 49 citations in OpenAlex.

  1. Guideline
  2. Article
  3. Article
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  6. Article
  7. Article
  8. Article
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  12. Article
  13. Article
  14. Review
  15. Observational
  16. Review
  17. Article
  18. Gene-based therapies for neuromuscular disorders.Arquivos de neuro-psiquiatria · 2024
    Article
  19. Review
  20. German Porphyria Registry (PoReGer)-Background and Setup.Healthcare (Basel, Switzerland) · 2024
    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 2 institutions in 1 country.

Lea M GerischerCharité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology, Berlin, Germany.ORCID 0000-0001-5746-068X
Franziska ScheibeCharité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology, Berlin, Germany.
Astrid NümannCharité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology, Berlin, Germany.
Martin KöhnleinCharité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology, Berlin, Germany.
Ulrich StölzelDepartment of Internal Medicine II, Porphyria Center Saxonia, Klinikum Chemnitz gGmbH, Chemnitz, Germany.
Andreas MeiselCharité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurology, Berlin, Germany.
Humboldt-Universität zu Berlin · DEKlinikum Chemnitz · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Acute hepatic porphyrias (AHP) can cause severe neurological symptoms involving the central, autonomic, and peripheral nervous system. Due to their relative rarity and their chameleon-like presentation, delayed diagnosis and misdiagnosis are common. AHPs are genetically inherited disorders that result from heme biosynthesis enzyme deficiencies and comprise four forms: acute intermittent porphyria (AIP), variegate porphyria (VP), hereditary coproporphyria (HCP), and ALA-dehydratase porphyria (ALADP). Depending on the clinical presentation, the main differential diagnoses are Guillain-Barré syndrome and autoimmune encephalitis. Red flags that could raise the suspicion of acute porphyria are neurological symptoms starting after severe (abdominal) pain, in association with reddish urine, hyponatremia or photodermatitis, and the presence of encephalopathy and/or axonal neuropathy. We highlight the diagnostic difficulties by presenting three cases from our neurological intensive care unit and give a comprehensive overview about the diagnostic findings in imaging, electrophysiology, and neuropathology.

Indexed as

Nervous System DiseasesPorphyria, Acute IntermittentPorphyriasPorphyrias, HepaticHumansPorphobilinogen SynthasePorphobilinogen Synthaseacute porphyriaautoimmune encephalitisGuillain-Barré syndromeporphyric encephalopathyporphyric neuropathy

Identifiers

PMID34661997
PMCPMC8613433
OpenAlexW3206671271

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.