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Vol. 46. Issue 9.
Pages 671-681 (November 2023)
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Vol. 46. Issue 9.
Pages 671-681 (November 2023)
Original article
Biological treatment interruption in inflammatory bowel disease: Motivation and predictive factors
Interrupción del tratamiento biológico en la enfermedad inflamatoria intestinal: causas y factores predictores
María Rocío Davis Gonzáleza,d, María Pilar Ballestera,b,d,
Corresponding author
mapibafe@gmail.com

Corresponding author.
, Eva Romero-Gonzáleza, Ana María Sánchez-Pardoa, David Marti-Aguadoa, Joan Toscaa, Carles Suriaa, Rosario Antón Ausejoa, Isabel Pascual Morenoa, María Dolores Planelles Silvestrec, Miguel Mínguez Péreza, Marta Maia Bosca-Wattsa
a IBD Unit, Digestive Disease Medicine, University of Valencia, University Clinic Hospital of Valencia, Spain
b Instituto de Investigación Sanitaria INCLIVA, Spain
c Histocompatibility Laboratory, Transfusion Center of Valencian Community, Valencia, Spain
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Figures (2)
Tables (3)
Table 1. Risk factors for treatment discontinuation.
Table 2. Risk factors for treatment discontinuation in CD patients.
Table 3. Risk factors for treatment discontinuation in UC.
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Additional material (1)
Abstract
Background

Loss-of-response and adverse events (AE) to biologics have been linked to HLA-DQA1*05 allele. However, the clinical factors or biologic used may influence treatment duration. Our objective was to evaluate the influence of clinical and therapeutic factors, along with HLA, in biological treatment discontinuation.

Methods

A retrospective study of consecutive IBD patients treated with biologics between 2007 and 2011 was performed. Main outcome was treatment discontinuation due to primary non-response (PNR), secondary loss of response (SLR) or AE. HLA-DQA1 genotyping was done in all patients. Regression analyses were used to assess risk factors of treatment discontinuation.

Results

One hundred fifty patients (61% male) with 312 biologic treatments were included. 147 (47%) were discontinued with a cumulative probability of 30%, 41% and 56% at 1, 2 and 5 years. The use of infliximab (p=0.006) and articular manifestations (p<0.05) were associated with treatment discontinuation. Considering cause of withdrawal, Ulcerative Colitis (UC) had a higher proportion of PNR (HR=4.99; 95% CI=1.71–14.63; p=0.003), SLR was higher if biologics had been indicated due to disease flare (HR=2.32; 95% CI=1.05–5.09; p=0.037) while AE were greater with infliximab (HR=2.46; 95% CI=1.48–4.08; p<0.001) or spondylitis (HR=2.46; 95% CI=1.78–6.89; p<0.001). According to the biological drug, HLA-DQA1*05 with adalimumab showed more SLR in cases with Crohn's disease (HR=3.49; 95% CI=1.39–8,78; p=0.008) or without concomitant immunomodulator (HR=2.8; 95% CI=1.1–6.93; p=0.026).

Conclusions

HLA-DQ A1*05 was relevant in SLR of IBD patients treated with adalimumab without immunosupression. In patients treated with other biologics, clinical factors were more important for treatment interruption, mainly extensive UC or extraintestinal manifestations and having indicated the biologic for flare.

Keywords:
Inflammatory bowel disease
HLA-DQ A1*05
Biological drugs
Secondary loss of response
Adverse events
Resumen
Introducción

Estudios previos han observado una asociación entre el HLA-DQA1*05 y la pérdida de respuesta a biológicos y el desarrollo de efectos adversos (EA). Hay factores clínicos y biológicos que podrían influir en la duración del tratamiento. El objetivo del estudio fue evaluar la influencia del HLA, de factores clínicos y terapéuticos en la interrupción del tratamiento biológico.

Métodos

Se realizó un estudio retrospectivo de pacientes con enfermedad inflamatoria intestinal (EII) tratados con biológicos entre 2007 y 2011. Los principales eventos analizados fueron la suspensión del tratamiento por fallo de respuesta primaria (PRP), secundaria (PRS) o EA. Se realizó un tipaje del HLA-DQA1*05 y se evaluaron los factores de riesgo de interrupción del tratamiento mediante un análisis de regresión logística.

Resultados

Se incluyeron 150 pacientes y 312 tratamientos, de los cuales se suspendieron 147 (47%) en el seguimiento. El infliximab (p=0,006) y las manifestaciones articulares (p<0,05) se relacionaron con la interrupción del tratamiento. La colitis ulcerosa (CU) presentó mayor PRP (HR: 4,99; IC 95%: 1,71-14,63; p=0,003), el brote como indicación de tratamiento se asoció a más PRS (HR: 2,32; IC 95%: 1,05-5,09; p=0,037); el uso de infliximab (HR: 2,46; IC 95%: 1,48-4,08; p<0,001) y la espondilitis (HR: 2,46; IC 95%: 1,78-6,89; p<0,001) a la suspensión por EA. El HLA-DQA1*05 fue un factor de riesgo de PRS en los pacientes tratados con adalimumab (ADA) con enfermedad de Crohn (HR: 3,49; IC 95%: 1,39-8,78; p=0,008) o con EII sin inmunosupresor asociado (HR: 2,8; IC 95%: 1,1-6,93; p=0,026).

Conclusiones

El HLA-DQA1*05 se asoció al cese del tratamiento con ADA por PRS en los pacientes con EII sin inmunosupresor asociado. Respecto a otros biológicos, la suspensión se debió más a factores como la CU, las manifestaciones articulares y la indicación para remisión de brote intestinal.

Palabras clave:
Enfermedad inflamatoria intestinal
HLA-DQA1*05
Biológicos
Pérdida secundaria de respuesta
Efectos adversos

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