Evidence map›Paper›PMID 31227012›Full record

ArticleOrphanet journal of rare diseases2019

Treatment with metformin in twelve patients with Lafora disease.

Francesca Bisulli, Lorenzo Muccioli, Giuseppe d'Orsi, Laura Canafoglia, Elena Freri, Laura Licchetta, Barbara Mostacci, Patrizia Riguzzi, Federica Pondrelli, Carlo Avolio and 3 more

Abstract readLetter
In one paragraph

Article in Orphanet journal of rare diseases, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

34 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Article
  6. Adeno-Associated Virus-Based Gene Therapy for Lafora Disease inInternational journal of molecular sciences · 2025
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Review
  13. Gene therapy for Lafora disease in the Epm2aMolecular therapy : the journal of the American Society of Gene Therapy · 2024
    Article
  14. Review
  15. Article
  16. Article
  17. Review
  18. Review
  19. Article
  20. ILAE Genetics Literacy series: Progressive myoclonus epilepsies.Epileptic disorders : international epilepsy journal with videotape · 2023
    Review
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

13 authors.

Francesca BisulliIRCCS Istituto delle Scienze Neurologiche di Bologna, Ospedale Bellaria, Bologna, Italy. francesca.bisulli@unibo.it.ORCID 0000-0002-1109-7296
Lorenzo MuccioliDepartment of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy.
Giuseppe d'OrsiEpilepsy Centre, Clinic of Nervous System Diseases, University of Foggia, Ospedali Riuniti, Foggia, Italy.
Laura CanafogliaDepartment of Neurophysiology and Diagnostic Epileptology, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy.
Elena FreriPediatric Neurology, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy.
Laura LicchettaIRCCS Istituto delle Scienze Neurologiche di Bologna, Ospedale Bellaria, Bologna, Italy.
Barbara MostacciIRCCS Istituto delle Scienze Neurologiche di Bologna, Ospedale Bellaria, Bologna, Italy.
Patrizia RiguzziIRCCS Istituto delle Scienze Neurologiche di Bologna, Ospedale Bellaria, Bologna, Italy.
Federica PondrelliDepartment of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy.
Carlo AvolioEpilepsy Centre, Clinic of Nervous System Diseases, University of Foggia, Ospedali Riuniti, Foggia, Italy.
Tommaso MartinoEpilepsy Centre, Clinic of Nervous System Diseases, University of Foggia, Ospedali Riuniti, Foggia, Italy.
Roberto MichelucciIRCCS Istituto delle Scienze Neurologiche di Bologna, Ospedale Bellaria, Bologna, Italy.
Paolo TinuperIRCCS Istituto delle Scienze Neurologiche di Bologna, Ospedale Bellaria, Bologna, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLafora disease (LD) is a rare, lethal, progressive myoclonus epilepsy for which no targeted therapy is currently available. Studies on a mouse model of LD showed a good response to metformin, a drug with a well known neuroprotective effect. For this reason, in 2016, the European Medicines Agency granted orphan designation to metformin for the treatment of LD. However, no clinical data is available thus far.

methodsWe retrospectively collected data on LD patients treated with metformin referred to three Italian epilepsy centres.

resultsTwelve patients with genetically confirmed LD (6 EPM2A, 6 NHLRC1) at middle/late stages of disease were treated with add-on metformin for a mean period of 18 months (range: 6-36). Metformin was titrated to a mean maintenance dose of 1167 mg/day (range: 500-2000 mg). In four patients dosing was limited by gastrointestinal side-effects. No serious adverse events occurred. Three patients had a clinical response, which was temporary in two, characterized by a reduction of seizure frequency and global clinical improvement.

conclusionsMetformin was overall safe in our small cohort of LD patients. Even though the clinical outcome was poor, this may be related to the advanced stage of disease in our cases and we cannot exclude a role of metformin in slowing down LD progression. Therefore, on the grounds of the preclinical data, we believe that treatment with metformin may be attempted as early as possible in the course of LD.

Indexed as

AdolescentAnimalsDisease Models, AnimalFemaleHumansLafora DiseaseMaleMetforminMutationMyoclonic Epilepsies, ProgressiveProtein Tyrosine Phosphatases, Non-ReceptorRetrospective StudiesUbiquitin-Protein LigasesEPM2A protein, humanMetforminNHLRC1 protein, humanProtein Tyrosine Phosphatases, Non-ReceptorUbiquitin-Protein LigasesEPM2AEPM2BLafora diseaseMetforminNHLRC1Progressive myoclonus epilepsy

Identifiers

PMID31227012
PMCPMC6588886

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Registered trials

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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.