Clinical experience with erenumab during the first year of treatment
*Correspondencia: Dra. Alicia Caso González. Servicio de Farmacia. Hospital San Pedro. C/Piqueras, 98. E-26006 Logroño.
E-mail: alicia.caso@usal.es
Introduction: Erenumab, a calcitonin gene-related peptide antagonist, has been approved for migraine prophylaxis. It represents an alternative for patients with multiple treatment failures, who have a low quality of life and high associated disability.
Aim: To analyse the effectiveness and safety of erenumab during the first year of treatment and to assess its impact on quality of life and disability.
Patients and methods: It is a longitudinal prospective observational study conducted over 15 months. Patients who met the funding criteria for erenumab were included. Data concerning years of illness, migraine days/month, pain intensity, previous treatments, doses and adverse effects were collected. In addition, quality of life and disability were assessed using the Migraine-Specific Quality Of Life Questionnaire 2.1 and Migraine Disability Assessment Scale, repeated at three and 12 months.
Results: Forty-three patients were included, 79.1% female, 95.3% with chronic migraine and with a mean age of 48.2 years. Prior to erenumab they had 20 migraine days/month, a pain intensity of 8.2 and a 30.6% quality of life, and 72.5% had very severe disability. Fifteen patients stopped taking erenumab due to inefficacy and one due to intolerance. Thirteen received erenumab for one year and 14 continued with the treatment. All four effectiveness variables were significantly improved with erenumab by the third month. Fifteen patients (34.9%) had adverse effects, most of which were mild. Constipation was the most frequent.
Conclusions: Erenumab proved effective in most patients for migraine prophylaxis in the first three months, significantly reducing the number of migraine days/month, pain intensity and associated disability. Moreover, it significantly improved their quality of life . It is a safe drug.
Objetivo Analizar la efectividad y la seguridad del erenumab durante el primer año de tratamiento y evaluar su impacto en la calidad de vida y la discapacidad.
Pacientes y métodos Estudio observacional prospectivo longitudinal realizado durante 15 meses. Se incluyó a los pacientes que cumplían los criterios de financiación del erenumab. Se recogieron años de enfermedad, días de migraña/mes, intensidad del dolor, tratamientos previos, dosis y efectos adversos. Además, se evaluaron la calidad de vida y la discapacidad mediante los cuestionarios Migraine-Specific Quality Of Life Questionnaire 2.1 y Migraine Disability Assessment Scale, que se repitieron a los tres y a los 12 meses.
Resultados Se incluyó a 43 pacientes, el 79,1% mujeres, el 95,3% con migraña crónica y con una edad media de 48,2 años. Previamente al erenumab presentaban 20 días de migraña/mes, intensidad de dolor 8,2, un 30,6% de calidad de vida y el 72,5% tenía discapacidad muy grave. Quince pacientes suspendieron el erenumab por ineficacia y uno por intolerancia. Trece recibieron erenumab durante un año y 14 continuaban en tratamiento. Las cuatro variables de efectividad mejoraron significativamente con el erenumab al tercer mes. Quince pacientes (34,9%) presentaron efectos adversos, en su mayoría leves. El estreñimiento fue el más frecuente.
Conclusiones El erenumab mostró efectividad en la mayoría de los pacientes para profilaxis de migraña en los tres primeros meses, reduciendo significativamente los días de migraña/mes, la intensidad del dolor y la discapacidad asociada. Además, mejoró significativamente la calidad de vida. Es un fármaco seguro.