Evidence map›Paper›PMID 40729416›Full record

SynthesisEuropean journal of neurology2025

Systematic Review and Meta-Analysis of Secondary Treatment Failure and Immunogenicity With Botulinum Neurotoxin A in Multiple Indications.

Uwe Walter, Phillipp Albrecht, Warner Carr, Harald Hefter

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in European journal of neurology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing 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

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

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Observational
  6. Article
  7. Article
  8. 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

4 authors.

Uwe WalterDepartment of Neurology, Rostock University Medical Center, Rostock, Germany.ORCID 0000-0002-6280-785X
Phillipp AlbrechtDepartment of Neurology, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany.
Warner CarrAllergy and Asthma Associates of Southern California, Southern California Research, Mission Viejo, California, USA.
Harald HefterDepartment of Neurology, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany.

Funding

Merz Therapeutics GmbH
6 · The paper itself

Abstract

backgroundBotulinum neurotoxin A (BoNT-A) is recommended for the treatment of cervical dystonia (CD), spasticity, and blepharospasm. Some patients treated with BoNT-A have been reported to develop neutralizing antibodies (NAbs) against BoNT-A, which may result in reduced efficacy and, in some cases, secondary treatment failure (STF). Our aim was to investigate the incidence of STF and NAb positivity after treatment with one of three commercially-available BoNT-A formulations.

methodsA systematic review and meta-analysis of STF and/or NAb positivity after treatment with abobotulinumtoxinA, incobotulinumtoxinA, or onabotulinumtoxinA in patients with CD, spasticity, or blepharospasm was conducted using PubMed, Embase, and Google Scholar.

resultsTwenty-nine unique studies reported in 29 publications assessed NAb positivity and were included. The meta-analysis showed that the proportions of patients developing STF were significantly higher after treatment with abobotulinumtoxinA or onabotulinumtoxinA than with incobotulinumtoxinA for CD or spasticity. Depending on the antibody test used, the proportions of patients developing NAbs were also significantly higher after treatment with abobotulinumtoxinA or onabotulinumtoxinA than with incobotulinumtoxinA for CD or spasticity. When data for all indications were pooled, proportions of NAb-positive patients were numerically higher with increasing mean doses of abobotulinumtoxinA or onabotulinumtoxinA. No patients treated exclusively with incobotulinumtoxinA were found to have developed immunogenic STF or persistent NAbs.

conclusionsThe risk of developing STF and NAbs appears to vary with indication and BoNT-A formulation. When the efficacy and safety of formulations are comparable, incobotulinumtoxinA may be recommended to avoid developing STF and immunogenicity, particularly for patients requiring higher doses and repeated treatments.

Indexed as

Antibodies, NeutralizingBlepharospasmBotulinum Toxins, Type AMuscle SpasticityNeuromuscular AgentsTorticollisHumansTreatment FailureabobotulinumtoxinAAntibodies, NeutralizingBotulinum Toxins, Type AincobotulinumtoxinANeuromuscular Agentsonabotulinum toxin Ablepharospasmbotulinum toxincervical dystoniaimmunogenicityspasticity

Identifiers

PMID40729416
PMCPMC12306683

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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.