Publications by authors named "Szamosi Tamas"

Long-term data on ustekinumab in real-life Crohn's disease patients are still missing, though randomized controlled trials demonstrated it as a favorable therapeutic option. We aimed to evaluate ustekinumab's clinical efficacy, drug sustainability, and safety in a prospective, nationwide, multicenter Crohn's disease patient cohort with a three-year follow-up. Crohn's disease patients on ustekinumab treatment were consecutively enrolled from 9 Hungarian Inflammatory Bowel Disease centers between January 2019 and May 2020.

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Concomitant medications may alter the effect of biological therapy in inflammatory bowel disease. The aim was to investigate the effect of proton pump inhibitors on remission rates in patients with inflammatory bowel disease treated with the gut-selective vedolizumab. Patients from the Hungarian nationwide, multicenter vedolizumab cohort were selected for post hoc analysis.

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Background And Aims: Tofacitinib (TFB) appears to be effective in the treatment of ulcerative colitis (UC); however, available real-world studies are limited by cohort size. TFB could be an option in the treatment of acute severe ulcerative colitis (ASUC). We aimed to investigate efficacy and safety of TFB in moderate-to-severe colitis and ASUC.

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Background: Treatment with antitumor necrosis factor alpha (anti-TNF-α) is safe and effective as first-line therapy; however, its efficacy is limited due to primary nonresponse (PNR) and secondary loss of response (LOR), resulting in treatment discontinuation in approximately 40%-50% of cases. Vedolizumab (VDZ) and ustekinumab (UST) therapies could be good alternatives in patient with anti-TNF failure; however, no head-to-head randomized comparison of these drugs as second- or third-line treatments has been made.

Objectives: This study aimed to assess the treatment persistence and comparative effectiveness of UST and VDZ in patients with refractory Crohn's disease (CD).

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Article Synopsis
  • This study evaluates the effectiveness and safety of switching to adalimumab (ADA) biosimilars for patients with Crohn's disease and ulcerative colitis, comparing non-medical switches from the original ADA to biosimilars and between different biosimilars.
  • A total of 276 patients were monitored over time, revealing no significant differences in clinical remission rates or C-reactive protein levels between the two groups who switched.
  • The findings indicate that patients can maintain clinical benefit and drug survival after switching, suggesting that non-medical switches between ADA and its biosimilars are safe and effective.
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Introduction: Although efficacy of ustekinumab (UST) has been demonstrated through randomized trials, data from real-life prospective cohorts are still limited. Our aim was to evaluate clinical efficacy, drug sustainability, dose intensification and results from therapeutic drug monitoring in UST treated patients with Crohn's disease (CD) using a prospective, nationwide, multicenter cohort.

Methods: Patients from 10 Inflammatory Bowel Disease centers were enrolled between 2019 January and 2020 May.

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Background: Evolocumab, a fully human monoclonal antibody directed against proprotein convertase subtilisin-kexin type 9, is widely used in adult patients to lower low-density lipoprotein (LDL) cholesterol levels. Its effects in pediatric patients with heterozygous familial hypercholesterolemia are not known.

Methods: We conducted a 24-week, randomized, double-blind, placebo-controlled trial to evaluate the efficacy and safety of evolocumab in pediatric patients with heterozygous familial hypercholesterolemia.

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Background: The incidence and prevalence of ulcerative colitis (UC) varies geographically. The risk of colorectal cancer (CRC) and possibly some other malignancies is increased among patients with UC. It is still debated if patients with UC are at a greater risk of dying compared with the general population.

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: Anti-TNF therapy is efficacious in the maintenance of remission in ulcerative colitis (UC); however, long-term data on real-life use of these agents are lacking.: This observational, retrospective, epidemiological study using the National Health Insurance Fund social security database aimed to understand patient characteristics and therapeutic patterns of anti-TNF therapy. Data of adult Hungarian, UC patients treated with anti-TNF agents (IFX-infliximab, ADA-adalimumab) between 2012 and 2016 were analyzed.

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: GEMINI trials demonstrated the therapeutic efficacy of vedolizumab (VDZ) in Crohn's disease (CD) and ulcerative colitis (UC).: Aim of this study was to determine the real-life effectiveness of VDZ on endoscopic healing in the Hungarian nationwide cohort of inflammatory bowel disease (IBD) patients based on the changes on clinical and endoscopic scores. Every adult IBD patient in the country (121 UC and 83 CD) who completed the short-term VDZ therapy was enrolled, of which 72 UC and 52 CD patients could complete the long-term therapy.

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Article Synopsis
  • A study was conducted to analyze the long-term effectiveness and dose adjustments of anti-TNFα treatments (infliximab and adalimumab) in patients from Hungary using claims data between 2013 and 2016.
  • Findings showed that 7% of infliximab and 22% of adalimumab patients required dose escalation, influenced by factors such as shorter disease duration and corticosteroid use.
  • Overall drug retention rates were satisfactory, with higher rates for adalimumab, and there were no major differences in retention between originator and biosimilar infliximab treatments.
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Background & Aims: There is evidence that it is safe and effective for patients with inflammatory bowel diseases (IBD) to switch from maintenance therapy with an original infliximab drug to a biosimilar, but little is known about outcomes of reverse switches and/or multiple switches. We aimed to evaluate the effects of a reverse switch (from a biosimilar to Remicade) in a real-life cohort.

Methods: We performed a prospective observational study of 174 unselected and consecutive patients with IBD (136 with Crohn's disease [CD] and 38 with ulcerative colitis [UC]) who received maintenance therapy with the biosimilar in Hungary.

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Background: It has been previously shown that biosimilar infliximab CT-P13 is effective and safe in inducing remission in inflammatory bowel diseases. We report here the 1-year outcomes from a prospective nationwide inflammatory bowel disease cohort.

Methods: A prospective, nationwide, multicenter, observational cohort was designed to examine the efficacy and safety of CT-P13 in the induction and maintenance treatment of Crohn's disease (CD) and ulcerative colitis (UC).

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Background: Safety data of the 'real life' use of an infliximab biosimilar, CT-P13 in inflammatory bowel disease (IBD) are still lacking. Our aim was to assess the frequency and characteristics of infusion reactions during CT-P13 therapy in 13 Hungarian and 1 Czech IBD centres.

Methods: Clinical and safety data was registered at fixed appointments.

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Background And Aims: Biosimilar infliximab CT-P13 received European Medicines Agency [EMA] approval in June 2013 for all indications of the originator product. In the present study, we aimed to evaluate the predictors of short- and medium-term clinical outcome in patients treated with the biosimilar infliximab at the participating inflammatory bowel disease [IBD] centres in Hungary.

Methods: Demographic data were collected and a harmonised monitoring strategy was applied.

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Background And Aims: Biosimilar infliximab CT-P13 is approved for all indications of the originator product in Europe. Prospective data on its efficacy, safety, and immunogenicity in inflammatory bowel diseases are lacking.

Methods: A prospective, nationwide, multicentre, observational cohort was designed to examine the efficacy, safety, and immunogenicity of CT-P13 infliximab biosimilar in the induction treatment of Crohn's disease [CD] and ulcerative colitis [UC].

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Objective: Influenza vaccination is recommended for inflammatory bowel disease (IBD) patients on immunosuppressive therapy. The objective was to evaluate the antibody and cell-mediated immune response to the split and whole virion influenza vaccine in patients with IBD treated with anti-TNF-α and immunosuppressive therapy.

Patients And Methods: One hundred and fifty-six immunocompromised IBD patients were vaccinated.

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Objectives: Inflammatory bowel diseases (IBD) have a huge impact on the patients' lives and require continuous medication and long-term medical follow-up. The Short Form Health Survey (SF-36) is a commonly used questionnaire measuring health-related quality of life (HRQOL). Our aim was to evaluate whether HRQOL influences medication adherence and vice versa in IBD patients, and to find relationships between demographic parameters, therapeutic modalities and non-adherence or HRQOL.

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Unlabelled: The quality of endoscopic examinations substantially determines their value. In developed countries, Continuous Quality Management is used to improve it permanently. In Hungary there is no example for measuring quality in the field of gastrointestinal endoscopy.

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Unlabelled: Adalimumab is a fully human monoclonal antibody targeting tumor necrosis factor with proven efficacy in the treatment of Crohn's disease in clinical trials. The aim of the present study was to investigate the predictors of medium term clinical efficacy and mucosal healing during adalimumab therapy in patients with Crohn's disease in specialized centers approved for biological therapy in Hungary.

Methods: Data of 201 Crohn's disease patients were prospectively captured (male/female: 112/89, median age: 24 years, duration: 8 years).

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Background And Aims: Previous studies have suggested an increasing use of complementary and alternative medicine (CAM) in patients with inflammatory bowel disease (IBD). Furthermore, a significant number of IBD patients fail to comply with treatment. The aim of our study was to evaluate the prevalence of non-adherence and the use of CAM in Hungarian patients with IBD.

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Unlabelled: Previous studies have suggested an increasing use of complementary and alternative medicine (CAM) in patients with inflammatory bowel disease (IBD). Furthermore, a significant number of IBD patients fail to comply with treatment. The aim of our study was to evaluate the prevalence of non-adherence the use of CAM in Hungarian patients with IBD.

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Objective: Evaluate the efficacy and safety of colesevelam hydrochloride in children with heterozygous familial hypercholesterolemia (heFH).

Study Design: This was a randomized, double-blind, 41-site study in 194 children aged 10 to 17 years (inclusive) with heFH (statin-naïve or on a stable statin regimen). After a 4-week stabilization period (period I), subjects were randomized 1:1:1 to placebo, colesevelam 1.

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