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Inicio Gastroenterología y Hepatología Optimizing outcomes with maintenance IV UST in highly bio-exposed patients with ...
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Available online 30 September 2024
Optimizing outcomes with maintenance IV UST in highly bio-exposed patients with IBD. Efficacy and adjusted regimen in real world
Optimizando resultados con UST IV de mantenimiento en pacientes con EII altamente bio-expuestos. Eficacia y pauta ajustada en mundo real
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Alejandro Míngueza,
Corresponding author
, Elena Coelloa, Alejandro Garridoa, Paula Ripolla, María Gomezb, Mariam Aguasa, Marisa Iborraa, Elena Cerrilloa, Lluis Tortosac, Virginia Bayarric, Noemí Buenoc, Maria José Fernándezd, Remedios Marquésd, Pilar Nosa, Guillermo Bastidaa
a IBD Unit, Gastroenterology Department, La Fe University and Polytechnic Hospital, Valencia, Spain
b Department of Gastroenterology, Complexo Hospitalario Universitario de A Coruña, A Coruña, Spain
c IBD Research Group, IIS Hospital la Fe, Valencia, Spain
d Pharmacy Service, Digestive and Neurosciences Area, La Fe University and Polytechnic Hospital, Valencia, Spain
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Table 1. Baseline characteristics.
Abstract
Background and aims

Ustekinumab is an effective treatment for inflammatory bowel diseases. However, some patients do not respond to conventional doses. The aim of the study was to evaluate the effectiveness of intravenous maintenance ustekinumab in patients with secondary failure.

Methods

Single-center, retrospective study in adult patients with intravenous maintenance ustekinumab. The reduction of biochemical activity markers, ustekinumab trough levels and clinical indices of activity were evaluated. Biological remission was defined as the percentage decrease fecal calprotectin ≥80% and/or final fecal calprotectin ≤250 and C reactive protein <5mg/L.

Results

Thirty-one patients were included: Crohn's disease 77.4%. All included patients were bio-exposed and 61.3% had carried ≥2 biologics.

Pre-intravenous maintenance mean Harvey–Bradshaw Index was 6.5±4.38 vs 5±3.1 at week 8 (p=0.024) vs 4.1±3.1 at week 24 (p=0.019). The median ustekinumab trough level pre-intravenous maintenance was 1.40μg/ml [IQR 2.3] vs 5.35μg/ml [IQR 4.1] at week 8 (p<0.001) vs 4.8μg/ml [IQR 3.9] at week 24 (p<0.001). The pre-intravenous maintenance median fecal calprotectin was 809μg/g [IQR: 2256] vs 423μg/g [IQR: 999] at week 8 (p=0.025) vs 333μg/g [508] (p=0.001) at week 24.

At the end of follow-up 48% went into biological remission. The presence of perianal disease was associated with lower biological remission (70.6% vs 27.3%, p=0.025). Median intravenous ustekinumab maintenance time was 8.55 [IQR 23.9] months. In 83.9% of patients no serious infections or malignancy were documented.

Conclusions

The use of maintenance intravenous ustekinumab appears to be an effective and safe strategy that can be evaluated as a salvage treatment especially in highly bio-exposed patients.

Keywords:
Ustekinumab
Inflammatory bowel disease
Therapeutic drug monitoring
Real world
Intravenous maintenance
Abbreviations:
Anti-TNF
CD
CRP
CLIA
EMR
FC
HBI
IBD
PD
pMS
SC
TDM
UC
UST
Resumen
Antecedentes y objetivos

Ustekinumab es un tratamiento eficaz para la enfermedad inflamatoria intestinal. Sin embargo, algunos pacientes no responden a las dosis convencionales. El objetivo del estudio fue evaluar la eficacia de ustekinumab intravenoso de mantenimiento.

Métodos

Estudio retrospectivo unicéntrico en pacientes adultos con ustekinumab intravenoso de mantenimiento. Se evaluó el descenso de los marcadores bioquímicos de actividad, los niveles valle de ustekinumab y los índices clínicos de actividad. La remisión biológica se definió como la disminución porcentual de calprotectina fecal ≥80% y/o calprotectina fecal final ≤250 y proteína C reactiva <5mg/l.

Resultados

Se incluyeron 31 pacientes: enfermedad de Crohn 77,4%. Todos los pacientes incluidos estaban bioexpuestos, y el 61,3% habían llevado ≥2 biológicos.

La mediana del índice Harvey-Bradshaw antes del mantenimiento intravenoso fue de 6,5±4,38 vs. 5±3,1 en la semana 8 (p=0,024) vs. 4,1±3,1 en la semana 24 (p=0,019). La mediana de los niveles valle de ustekinumab antes del mantenimiento intravenoso fue de 1,40μg/ml (IQR: 2,3) vs. 5,35μg/ml (IQR: 4,1) en la semana 8 (p<0,001) vs. 4,8μg/ml (IQR: 3,9) en la semana 24 (p<0,001). La mediana de calprotectina fecal antes del mantenimiento intravenoso fue de 809μg/g (IQR: 2.256) vs. 423μg/g (IQR: 999) en la semana 8 (p=0,025) vs. 333μg/g (508) (p=0,001) en la semana 24.

Al final del seguimiento, el 48% entró en remisión biológica. La presencia de enfermedad perianal se asoció a una menor remisión biológica (70,6 vs. 27,3%; p=0,025). La mediana del tiempo de mantenimiento con ustekinumab intravenoso fue de 8,55 (IQR: 23,9) meses. En el 83,9% de los pacientes no se documentaron infecciones graves ni neoplasias.

Conclusiones

El uso de ustekinumab intravenoso de mantenimiento parece ser una estrategia eficaz y segura que podría servir como tratamiento de rescate especialmente en los pacientes altamente bioexpuestos.

Palabras clave:
Ustekinumab
Enfermedad inflamatoria intestinal
Monitorización terapéutica de fármacos
Mundo real
Mantenimiento intravenoso

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