Thiopurine adherence: a high prevalence with low impact on UC outcomes

Introduction: thiopurines are used as maintenance therapy in patients with ulcerative colitis (UC). There are contradictory results regarding the relationship between adherence to treatment and risk of relapse.Objectives: to quantify and evaluate the trends in thiopurine prescription rates, and to determine the impact and risk factors of non-adherence.Methods: analytical, observational, retrospective study of UC patients taking thiopurines included in the ENEIDA single-center registry from October 2017 to October 2019. Adult patients in clinical remission at the beginning of the study on thiopurines maintenance treatment for at least 6 months before recruitment were included. Adherence was evaluated with an electronic pharmaceutical prescription system. Adherence was considered when 80 % or more of the prescribed medication was dispensed at the pharmacy. Kaplan-Meier curves and a regression model were used to examine year-to-year treatment dispensation, and to identify factors associated with non-adherence.Results: a total of 41 patients were included, of whom 71 % were males with a mean age of 44 (14), and 26.8 % were concomitantly managed with biological therapy. Overall, 22 % were non-adherent to thiopurines. No predictive factors of non-adherence were identified. Adherence rate did not correlate with disease activity during two years of follow-up (OR 1.6; 95 % CI = 0.3-9.1). Left-sided colitis and concomitant biological treatment were related with disease relapse (p ≤ 0.01).Conclusion: adherence to thiopurines in UC patients is high (78 %). Non-adherence is not related to clinical or pharmacological factors. Adherence rate was not associated with disease activity. (AU)

Vedolizumab, una opción en pacientes con enfermedad inflamatoria intestinal intolerantes a tiopurinas y refractarios a biológicos / Vedolizumab, an option in patients with inflammatory bowel disease intolerant to thiopurines and refractory to biological agents

Vedolizumab (VDZ), un anticuerpo monoclonal humanizado que se une específicamente a -alpha4beta7-integrina, aprobado para el tratamiento de la enfermedad de Crohn (EC) y la colitis ulcerosa (CU), ha demostrado su eficacia en ensayos clínicos controlados. OBJETIVO: Describir una población tratada con VDZ y evaluar su efectividad y seguridad a largo plazo en práctica clínica. MÉTODOS: Estudio observacional y multicéntrico en pacientes con enfermedad inflamatoria intestinal tratados con VDZ durante al menos un año. Se evaluaron los índices de actividad, niveles de calprotectina fecal y proteína C reactiva, hospitalizaciones, cirugías y eventos adversos. RESULTADOS: Se analizaron un total de 73 pacientes (43 CU y 30 EC). El 74 y 23% de CU y el 90 y 37% de EC habían llevado previamente más de un anti-TNF y más de un inmunosupresor respectivamente. VDZ se suspendió en 17 pacientes (23%), 10 CU y 7 EC, debido a la falta o pérdida de respuesta antes del primer año o a eventos adversos. Veintisiete (63%) CU y 16 (53%) pacientes con EC requirieron intensificación de la dosis. A los 6 meses, el 70 y 42% de CU y el 80 y 43% de EC lograron respuesta clínica y remisión respectivamente. Al año, el 58 y 35% de CU y el 47 y 43% de EC mantuvieron la respuesta clínica y la remisión, respectivamente. La proteína C reactiva disminuyó significativamente tanto en la EC como en la CU. Sin embargo, la disminución de la calprotectina fecal se logró durante el seguimiento solo en CU pero no en EC. Ocho pacientes con EC que habían sido tratados previamente con ustekinumab evitaron la cirugía al año. En 8 CU (18,6%) se realizó colectomía y 4 EC (13,3%) necesitaron cirugía. Seis pacientes (8%) (5 UC y una enfermedad de Crohn) tuvieron eventos adversos. El uso concomitante de corticoides o inmunomoduladores no aumentó la efectividad. A mayor número de anti-TNF previos, menos remisión en la CU y respuesta en la EC. CONCLUSIONES: Tras un año de VDZ se induce respuesta y remisión clínica en una no desdeñable proporción de pacientes refractarios a diferentes biológicos o inmunosupresores. VDZ puede considerarse una alternativa en intolerantes a inmunosupresores con pocos eventos adversos

Vedolizumab (VDZ), a human monoclonal antibody that binds specifically to alpha4beta7-integrin, and is approved for the treatment of Crohn's disease (CD) and ulcerative colitis (UC), has demonstrated its efficacy in controlled clinical trials. OBJECTIVE: To describe a population treated with VDZ and to evaluate its long-term efficacy and safety in clinical practice. METHODS: An observational and multicentre study was carried out on patients with inflammatory bowel disease treated with VDZ for at least one year. An evaluation was performed on the activity indices, faecal calprotectin and C-reactive protein levels, hospital admissions, surgeries, and adverse events. RESULTS: A total of 73 patients were analysed (43 UC and 30 CD). More than one anti-TNF and more than one immunosuppressive was previously used by 74 and 23%, respectively, of UC patients, and 90 and 37%, respectively of CD patients. VDZ was stopped in 17 (23%) patients, 10 UC and 7 CD, due to a lack or loss of response before the first year, or due to adverse events. An intensification of the dose was required in 26 (63%) UC, and 16 (53%) CD patients. At 6 months, 70 and 42% of UC patients, and 80 and 43% of CD patients achieved a clinical response and remission, respectively. At one year, 58 and 35% of UC patients and 47 and 43% of CD patients, maintained the clinical response and remission, respectively. The C-reactive protein decreased significantly in both CD and UC patients. However, the decrease in faecal calprotectin was only achieved during follow-up in UC, but not in CD patients. Eight patients with CD that had been treated previously with ustekinumab avoided surgery at one year. A colectomy was performed on 8 (18.6%) UC patients, and 4 (13.3%) CD patients needed surgery. Six patients (8%) (5 UC and 1 CD) had adverse events. The concomitant use of corticosteroids or immunomodulators did not increase the efficacy. Those with a higher number of previous anti-TNF treatments showed less remissions in UC and responses in CD. CONCLUSIONS: After one year of VDZ, a clinical response and remission was induced in a considerable percentage of patients refractory to different biological or immunosuppressive therapies. VDZ can be considered as an alternative in those intolerant to immunosuppressives, with few adverse events