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Published in: The Journal of Headache and Pain 1/2019

Open Access 01-12-2019 | Migraine | Research article

CALCA and TRPV1 genes polymorphisms are related to a good outcome in female chronic migraine patients treated with OnabotulinumtoxinA

Authors: R. Moreno-Mayordomo, M. Ruiz, J. Pascual, M. Gallego de la Sacristana, I. Vidriales, M. Sobrado, E. Cernuda-Morollon, A. B. Gago-Veiga, D. Garcia-Azorin, J. J. Telleria, A. L. Guerrero

Published in: The Journal of Headache and Pain | Issue 1/2019

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Abstract

Background

Some variables have been proposed as predictors of efficacy of OnabotulinumtoxinA in chronic migraine patients, but data available are inconclusive. We aimed to analyse the influence of single nucleotide polymorphisms in the response to OnabotulinumtoxinA.

Methods

We included 156 female patients treated with OnabotulinumtoxinA accordingly to PREEMPT paradigm in three headache units. OnabotulinumtoxinA was offered to patients that had not responded to topiramate and at least one other preventative. Age at first procedure was 43.7 ± 11.8 years (16–74). Patients with a reduction of at least 50% in the number of migraine days after two OnabotulinumtoxinA procedures were considered as responders. We analysed 25 polymorphisms selected for their relevance regarding migraine pathophysiology and their association with migraine according to previously published genome-wide association studies. Genotyping was performed using KASP probes and a LightCycler-480 (Roche-Diagnostics). Allelic, genotypic frequencies and dominance/recesivity hypothesis of the allelic variants were compared between responders and non-responders by Fisher’s exact test.

Results

Response to treatment with OnabotulinumtoxinA was achieved in 120 patients (76,9%). Two polymorphisms showed differences: CALCA rs3781719, where allele C represents 26.9% in responders and 40.9% in non-responders (p = 0.007, OR = 3.11 (1.33–7.26)); and TRPV1 rs222749, where allele A represents 4.17% in responders and 12.5% in non-responders (p = 0.013, OR = 3.29 (1.28–8.43)). No significant differences in rest of polymorphisms or clinical or demographic variables were found.

Conclusions

Polymorphic variations of CALCA and TRPV1 genes might play a role as prognostic markers of efficacy of OnabotulinumtoxinA in chronic migraine female patients in our population.
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Metadata
Title
CALCA and TRPV1 genes polymorphisms are related to a good outcome in female chronic migraine patients treated with OnabotulinumtoxinA
Authors
R. Moreno-Mayordomo
M. Ruiz
J. Pascual
M. Gallego de la Sacristana
I. Vidriales
M. Sobrado
E. Cernuda-Morollon
A. B. Gago-Veiga
D. Garcia-Azorin
J. J. Telleria
A. L. Guerrero
Publication date
01-12-2019
Publisher
Springer Milan
Keyword
Migraine
Published in
The Journal of Headache and Pain / Issue 1/2019
Print ISSN: 1129-2369
Electronic ISSN: 1129-2377
DOI
https://doi.org/10.1186/s10194-019-0989-9

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