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- Karlqvist, Sara, 1992-
(författare)
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Clinical aspects of biological treatment in inflammatory bowel disease
- 2024
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Inflammatory bowel disease (IBD) including its main subtypes, Crohn’s disease and ulcerative colitis, is a chronic and recurrent inflammatory condition that affects the entire gastrointestinal system. Biological treatment has revolutionized the therapeutic armamentarium in the past two decades. The growing number of therapeutic options advocates for head-to-head comparisons, evaluation in clinical practice and assessment of safety. Therefore, this thesis aims to evaluate different facets of biological treatment in real-world cohorts.In Paper I, we examined the potential effectiveness of golimumab in Crohn’s disease using data from The Swedish National Quality Register for Inflammatory Bowel Disease (SWIBREG). The findings indicate a drug retention rate of 35% after a median follow-up of 89 (IQR: 32–158) weeks. Paper II constituted a prospective, multicentre, observational cohort study investigating the effectiveness of vedolizumab and its impact on quality of life in a Swedish clinical setting. The percentage of patients in clinical remission after 52 weeks was 41% for Crohn's disease and 47% for ulcerative colitis. Improvements in biochemical markers and health-related quality of life measures were observed at 12 and 52 weeks in both subtypes of IBD. In Paper III, second-line biological treatments were compared in propensity score-matched cohorts based on combined data from multiple high-quality Swedish nationwide registers. The effectiveness and safety of secondline anti-TNF and vedolizumab were similar at 12 months in Crohn’s disease (n=198) and ulcerative colitis (n=202). Based on propensity score-matched data from nationwide health registers, Paper IV showed that vedolizumab was associated with higher hazard ratios of serious infections than anti-TNF in Crohn’s disease but not in ulcerative colitis.To conclude, this thesis suggests that golimumab might have a role in treating Crohn’s disease. It also increased knowledge about the real-world effectiveness of vedolizumab. Lastly, the thesis underscored aspects of efficacy and safety when contrasting vedolizumab with anti-TNF.
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| 2. |
- Karlqvist, Sara, 1992-, et al.
(författare)
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Comparative risk of serious infection with vedolizumab vs anti-TNF in Inflammatory Bowel Disease : Results from nationwide Swedish registers
- 2024
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Ingår i: Journal of Crohn's & Colitis. - : Oxford University Press. - 1873-9946 .- 1876-4479. ; 18:Suppl. 1, s. I1291-I1293
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Background: The real-world comparative safety of vedolizumab in inflammatory bowel disease (IBD) remains uncertain. We aimed to assess the risk of serious infection in IBD patients treated with vedolizumab, compared to (i) those treated with anti-tumour necrosis factor (TNF) treatment and (ii) the general population.Methods: In this nationwide cohort study, treatment episodes were identified from Swedish health registers (from 1 May 2014 – 31 December 2020). Patients were considered exposed from initiation of treatment until 90 days after discontinuation of treatment. We used Cox regression with propensity score-matched cohorts to estimate hazard ratios (HRs) for incident serious infection, defined as infection requiring hospital admission.Results: After propensity score matching, the cohorts were not materially different at baseline with regard to demographic, disease and treatment characteristics (Table 1). During 1376 treatment-episodes in patients with Crohn’s disease, there were 5.18 (95%CI: 3.98-6.63) serious infections per 100 person-years (PY) with vedolizumab vs 3.54 (95%CI: 2.50-4.85) per 100 PY with anti-TNF; HR 1.72 (95%CI: 1.12-2.65; Figure 1A). When examining site-specific infections in Crohn’s disease, vedolizumab was associated with an HR of 2.47 (95% CI: 0.96-6.39) for serious gastrointestinal infections. Compared to the rate of 0.75 (95%CI: 0.59-0.92) serious infections per 100 PY in the general population, vedolizumab demonstrated an increased HR of 7.00 (95%CI: 5.04-9.72).Across 1294 episodes among patients with ulcerative colitis there were 3.74 (95%CI: 2.66-5.11) serious infections per 100 PY with vedolizumab vs 3.42 (95%CI: 2.31-4.89) per 100 PY with anti-TNF, corresponding to HRs of 0.80 (95%CI: 0.47-1.36, Figure 1B) within the initial 1.1 years of treatment and 2.03 (95%CI: 0.65-6.32) after 1.1 years (follow-up truncated due to non-proportional hazards). In ulcerative colitis, there was no statistically significant association between vedolizumab treatment and any of the site-specific serious infections. Compared to the rate of 0.69 (95%CI: 0.53-0.87) serious infections per 100 PY in the general population, vedolizumab showed an increased HR of 5.45 (95%CI: 3.67-8.11).Conclusion: Vedolizumab was associated with higher hazard ratios of serious infections compared to anti-TNF in Crohn’s disease, but not in ulcerative colitis. Nonetheless, in both IBD subtypes vedolizumab exhibited increased hazard ratios compared to the general population. These results underscore the importance of heightened clinical awareness of infections in vedolizumab-treated patients and may help clinicians understanding the optimal positioning of vedolizumab.
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