Utilidad clínica de la determinación de niveles de CT-P13, biosimilar de infliximab, en el control de la enfermedad inflamatoria intestinal / Clinical value of CT-P13 trough levels, an infliximab biosimilar, in the management of inflammatory bowel disease

INTRODUCCIÓN: CT-P13 es un fármaco biosimilar de infliximab (IFX), efectivo en pacientes con enfermedad inflamatoria intestinal (EII). La medición de niveles de IFX y anticuerpos anti-IFX forma parte del tratamiento integral de dicha enfermedad. OBJETIVO: Comparar la respuesta clínica en función de un abordaje estrictamente clínico (CLN) o proactivo (PRO) basado en la medición de niveles en la semana 14, en la práctica clínica. MÉTODOS: Estudio prospectivo en pacientes que inician CT-P13 por EII. En el grupo PRO se midieron sistemáticamente los niveles de IFX y de anticuerpos postinducción (semana 14) y se intensificaron aquellos con niveles infraterapéuticos (<3μg/ml), independientemente de la respuesta clínica. RESULTADOS: Se incluyeron 77 pacientes (23 colitis ulcerosa y 54 enfermedad de Crohn). Ambos grupos, PRO (n=41) y CLN (n=36) presentaron una eficacia inicial y a largo plazo sin diferencias significativas. En la semana 14 hubo un 61% de remisión clínica (RC) (58,5% PRO, 63,9% CLN) y un 80,5% de al menos respuesta parcial (RP) (80,5% PRO, 80,6% CLN). En la semana 54 hubo un 68,8% de RC (61% PRO, 77,8% CLN) y un 76,6% de al menos RP (73,2% PRO, 80,6% CLN). De los pacientes en RC en la semana 14 (24 PRO, 23 CLN), 13 del grupo PRO fueron intensificados por niveles infraterapéuticos. En este subgrupo no se observaron diferencias significativas en la pérdida de respuesta secundaria (PRO 0%, CLN 8,7%). CONCLUSIÓN: Un manejo proactivo no mejoró las tasas de respuesta ni la remisión en el primer año. La intensificación de pacientes en RC y niveles infraterapéuticos postinducción no parece prevenir de forma significativa la pérdida de respuesta secundaria en el primer año

INTRODUCTION: CT-P13 is a biosimilar drug of infliximab (IFX), effective in patients with inflammatory bowel disease (IBD). The monitoring of levels of IFX and anti-IFX antibodies is now considered part of the integral management. OBJECTIVE: To compare the clinical response according to a strictly clinical (CLN) or proactive (PRO) approach based on the monitoring of levels in week 14, in clinical practice. METHODS: We conducted a prospective study in IBD patients starting CT-P13. In the PRO group, levels of IFX and post-induction antibodies were systematically measured (week 14) and those with infraterapeutic levels (<3μg/ml) were intensified, irrespective of the clinical response. RESULTS: We included 77 patients (23 ulcerative colitis and 54 Crohn's disease). Both PRO (n=41) and CLN (n=36) groups showed initial and long-term efficacy without significant differences. At week 14, 61% clinical remission (CR) (58.5% PRO, 63.9% CLN) and 80.5% at least partial response (PR) (80.5% PRO, 80.6% CLN). In week 54, 68.8% CR (61% PRO, 77.8% CLN) and 76.6% at least PR (73.2% PRO, 80.6% CLN). Of the patients in CR in week 14 (24 PRO, 23 CLN), 13 of the PRO group were intensified due to infra-therapeutic levels. In this subgroup no significant differences were observed in secondary loss of response (PRO 0%, CLN 8.7%). CONCLUSION: Proactive management does not improve response or remission rates in the first year. The intensification of clinical remission patients with post-induction infratherapeutic levels does not seem to significantly prevent secondary loss of response in the first year

Clinical value of CT-P13 trough levels, an infliximab biosimilar, in the management of inflammatory bowel disease. / Utilidad clínica de la determinación de niveles de CT-P13, biosimilar de infliximab, en el control de la enfermedad inflamatoria intestinal.

INTRODUCTION: CT-P13 is a biosimilar drug of infliximab (IFX), effective in patients with inflammatory bowel disease (IBD). The monitoring of levels of IFX and anti-IFX antibodies is now considered part of the integral management. OBJECTIVE: To compare the clinical response according to a strictly clinical (CLN) or proactive (PRO) approach based on the monitoring of levels in week 14, in clinical practice. METHODS: We conducted a prospective study in IBD patients starting CT-P13. In the PRO group, levels of IFX and post-induction antibodies were systematically measured (week 14) and those with infraterapeutic levels (<3µg/ml) were intensified, irrespective of the clinical response. RESULTS: We included 77 patients (23 ulcerative colitis and 54 Crohn's disease). Both PRO (n=41) and CLN (n=36) groups showed initial and long-term efficacy without significant differences. At week 14, 61% clinical remission (CR) (58.5% PRO, 63.9% CLN) and 80.5% at least partial response (PR) (80.5% PRO, 80.6% CLN). In week 54, 68.8% CR (61% PRO, 77.8% CLN) and 76.6% at least PR (73.2% PRO, 80.6% CLN). Of the patients in CR in week 14 (24 PRO, 23 CLN), 13 of the PRO group were intensified due to infra-therapeutic levels. In this subgroup no significant differences were observed in secondary loss of response (PRO 0%, CLN 8.7%). CONCLUSION: Proactive management does not improve response or remission rates in the first year. The intensification of clinical remission patients with post-induction infratherapeutic levels does not seem to significantly prevent secondary loss of response in the first year.

Whipple's disease under the vision of capsule endoscopy

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Whipple's disease under the vision of capsule endoscopy.

We read with great interest the paper by Martínez-Sánchez et al. entitled Diagnóstico atípico mediante cápsula endoscópica: enfermedad de Whipple and we support their conclusions.