Vedolizumab in Japanese patients with ulcerative colitis: A Phase 3, randomized, double-blind, placebo-controlled study

Efficacy and safety of mirikizumab compared with currently approved biologic drugs for the treatment of ulcerative colitis: A systematic review and network meta-analysis

Ulcerative colitis (UC) is a serious health problem that requires a constant need to identify new effective drugs. The aim of this study was to assess the efficacy and safety of mirikizumab compared with other biologic drugs approved for the treatment of moderately to severely active UC. This systematic review with frequentist network meta-analysis (NMA) included randomized controlled trials (RCTs) that evaluated the use of adalimumab, golimumab, infliximab, mirikizumab, vedolizumab, and ustekinumab compared with placebo or with another approved biologic drug. The NMA was conducted using the netmeta R software package. The P score was used to determine the treatment ranking. A total of 14 RCTs were included in the analysis. No significant differences were observed in the incidence of clinical response and remission between mirikizumab and other drugs. Mirikizumab was superior to placebo for clinical response (induction: odds ratio [OR] = 2.38; 95% confidence interval [CI]: 1.63-3.48; maintenance: OR = 3.31, 95% CI: 1.59-6.89) and remission (induction: OR = 2.09, 95% CI: 1.20-3.63; maintenance: OR = 2.96; 95% CI: 1.62-5.40). The probability plot indicated that infliximab might be the most effective option in terms of both clinical response and remission (P score, 0.8971 and 0.8814, respectively) in induction phase. No significant differences were noted between the studied drugs in any adverse events (AEs), serious AEs (SAEs) and infections for the induction phase, and in any AEs, infections and serious infections for the maintenance phase. The drugs differed in terms of discontinuation due to AEs (induction and maintenance phases) as well as SAEs and serious infections (maintenance phase). Mirikizumab did not differ from other biologics in terms of clinical response and remission for both induction and maintenance phases in patients with UC. Mirikizumab during the induction phases achieved rank 3 for clinical response and rank 5 for clinical remission. Therefore, it represents a valuable treatment option. The lack of significant differences in the risk of AEs and SAEs suggests that mirikizumab has a similar safety profile to the other drugs.

Efficacy and Safety of Etrasimod in Patients with Ulcerative Colitis in Japan: Data from the Phase 3 ELEVATE UC 12 and ELEVATE UC 40 JAPAN Trials

INTRODUCTION

Etrasimod is an oral, once-daily (QD), selective sphingosine 1-phosphate (S1P)1,4,5 receptor modulator for the treatment of moderately to severely active ulcerative colitis (UC). Here, we report the primary analysis of a phase 3 trial evaluating the efficacy and safety of etrasimod in patients from Japan with moderately to severely active UC.

METHODS

Patients from Japan who completed the 12-week ELEVATE UC 12 induction trial could enroll in the 40-week ELEVATE UC 40 JAPAN maintenance trial for a combined 52-week treatment period. Patients in this Japan cohort continued their baseline assigned treatment (etrasimod 2 mg QD or placebo) from ELEVATE UC 12. Efficacy was assessed at week 12 and week 52. Treatment-emergent adverse events (TEAEs) pooled from both trials were assessed up to 52 weeks of exposure.

RESULTS

The Japan cohort comprised 32 and 16 patients who received etrasimod and placebo, respectively. A numerically greater proportion of patients who received etrasimod versus placebo achieved clinical remission at week 12 (etrasimod: 14.3%; placebo: 7.1%) and week 52 (etrasimod: 25.0%; placebo: 7.1%); a similar trend was observed for all key secondary efficacy endpoints. TEAEs occurred in 84.4% (27/32) and 62.5% (10/16) of patients who received etrasimod and placebo, respectively. No new safety signals were detected.

CONCLUSION

In these induction and maintenance trials evaluating etrasimod in patients from Japan with UC, numerically higher proportions of patients who received etrasimod versus placebo achieved efficacy endpoints. Efficacy and safety findings were consistent with those from the global ELEVATE UC trial populations.

Predictors of the efficacy of vedolizumab in patients with ulcerative colitis

Vedolizumab is a treatment option for ulcerative colitis but data on predictors of treatment response remain insufficient to establish personalized treatment strategies. We aimed to investigate the real-world effectiveness of vedolizumab in adult patients with ulcerative colitis and explore factors involved in predicting treatment response. This single-center, single-arm, prospective observational study included 26 patients with clinically active ulcerative colitis patients' characteristics at baseline, epidemiological information, existing treatment, clinical activity index score, endoscopic score, and blood test data were collected. Serum levels of tumor necrosis factors alpha, interferon gamma, interleukin-4, interleukin-6, interleukin-10, interleukin-17, soluble mucosal addressin cell adhesion molecule 1, and soluble vascular cell adhesion molecule 1 were measured. Patient characteristics in the remission and non-remission groups were compared based on these parameters. Clinical remission at 6 weeks of treatment occurred in 9 (35%) of the 26 patients. At 14 weeks, clinical remission was observed in 11 patients (42%). There were no significant differences pertaining to age, sex, duration of disease, extent of disease, steroid resistance, or prior treatment with biological agents among the two groups after 14 weeks of treatment. Hemoglobin ≥ 11.5 g/dL (odds ratio, 15.0; 95% confidence interval, 1.50-149; P=0.014) and soluble mucosal addressin cell adhesion molecule 1 ≥ 765 pg/mL (odds ratio, 17.3; 95% confidence interval, 2.36-127; P=0.004) were significant factors. In conclusion, hemoglobin and serum soluble mucosal addressin cell adhesion molecule 1 levels are factors correlated with the therapeutic efficacy of vedolizumab.

Navigating the complexities of drug development for inflammatory bowel disease

Inflammatory bowel disease (IBD) - consisting of ulcerative colitis and Crohn's disease - is a complex, heterogeneous, immune-mediated inflammatory condition with a multifactorial aetiopathogenesis. Despite therapeutic advances in this arena, a ceiling effect has been reached with both single-agent monoclonal antibodies and advanced small molecules. Therefore, there is a need to identify novel targets, and the development of companion biomarkers to select responders is vital. In this Perspective, we examine how advances in machine learning and tissue engineering could be used at the preclinical stage where attrition rates are high. For novel agents reaching clinical trials, we explore factors decelerating progression, particularly the decline in IBD trial recruitment, and assess how innovative approaches such as reconfiguring trial designs, harmonizing end points and incorporating digital technologies into clinical trials can address this. Harnessing opportunities at each stage of the drug development process may allow for incremental gains towards more effective therapies.

Machine Learning for Predicting Biologic Agent Efficacy in Ulcerative Colitis: An Analysis for Generalizability and Combination with Computational Models

Machine learning (ML) has been applied to predict the efficacy of biologic agents in ulcerative colitis (UC). ML can offer precision, personalization, efficiency, and automation. Moreover, it can improve decision support in predicting clinical outcomes. However, it faces challenges related to data quality and quantity, overfitting, generalization, and interpretability. This paper comments on two recent ML models that predict the efficacy of vedolizumab and ustekinumab in UC. Models that consider multiple pathways, multiple ethnicities, and combinations of real-world and clinical trial data are required for optimal shared decision-making and precision medicine. This paper also highlights the potential of combining ML with computational models to enhance clinical outcomes and personalized healthcare. Key Insights: (1) ML offers precision, personalization, efficiency, and decision support for predicting the efficacy of biologic agents in UC. (2) Challenging aspects in ML prediction include data quality, overfitting, and interpretability. (3) Multiple pathways, multiple ethnicities, and combinations of real-world and clinical trial data should be considered in predictive models for optimal decision-making. (4) Combining ML with computational models may improve clinical outcomes and personalized healthcare.

Update for surgeons on novel induction treatments for acute severe inflammatory bowel disease associated colitis

BACKGROUND

The landscape of biologic agents for the treatment of inflammatory bowel disease (IBD) associated colitis is rapidly evolving, requiring surgeons to be up-to-date as part of multi-disciplinary, evidence-based care. An update on novel therapies used to induce remission in IBD-associated colitis is presented.

METHODS

A systematic search through Ovid MEDLINE and CENTRAL using a combination of MeSH terms and Boolean operators was conducted.

RESULTS

One thousand and twenty articles from which 38 articles were selected for inclusion in this review. Novel agents were trialled as 4th or 5th line treatment following conventional treatment failure. Rates of serious adverse effects were low. Janus kinase (JAK) inhibitors (upadacitinib and tofacitinib) were efficacious in inducing remission in ulcerative colitis, and IL-23p19 inhibitors (mirikizumab, guselkumab, and risankizumab) in Crohn's colitis. Evidence was limited for other drug classes.

CONCLUSION

JAK-inhibitors and IL-23p19 inhibitors were found to be the most effective agents for inducting remission following failure of standard of care treatment. A significant proportion of patients did not respond, highlighting the inherent challenge in optimizing treatment for moderate to severe IBD-associated colitis. More robust study designs and comparator trials are required.

Comparative Efficacy of Subcutaneous and Intravenous Infliximab and Vedolizumab for Maintenance Treatment of TNF-naive Adult Patients with Inflammatory Bowel Disease: A Systematic Literature Review and Network Meta-analysis

BACKGROUND

Infliximab and vedolizumab are widely used to treat Crohn's disease (CD) and ulcerative colitis (UC).

AIMS

This systematic review and network meta-analysis evaluated comparative efficacy of various regimens for intravenous or subcutaneous infliximab and vedolizumab during maintenance treatment in CD and UC.

METHODS

Parallel-group randomized controlled trials (RCTs) were identified by a systematic literature review (CRD42022383401) and included if they evaluated therapeutics of interest for maintenance treatment of adults with moderate-to-severe luminal CD or UC and assessed clinical remission between Weeks 30 and 60. Clinical remission rates in CD or UC and mucosal healing rates in UC were analyzed in a Bayesian network meta-analysis model. Endoscopic outcomes in CD were synthesized by proportional meta-analysis.

RESULTS

Overall, 13 RCTs were included in the analyses. All vedolizumab studies randomized induction responders to maintenance treatment; infliximab studies used a treat-through design. Subcutaneous infliximab 120 mg every 2 weeks had the highest odds ratio (OR) [95% credible interval] versus placebo for clinical remission during the maintenance phase (CD: 5.90 [1.90-18.2]; UC: 5.45 [1.94-15.3]), with surface under the cumulative ranking curve (SUCRA) values of 0.91 and 0.82, respectively. For mucosal healing in UC, subcutaneous infliximab 120 mg every 2 weeks showed the highest OR (4.90 [1.63-14.1]), with SUCRA value of 0.73, followed by intravenous vedolizumab 300 mg every 4 weeks (SUCRA value, 0.70). Endoscopic outcomes in CD were better with subcutaneous infliximab 120 mg every 2 weeks than intravenous infliximab 5 mg/kg every 8 weeks.

CONCLUSIONS

Subcutaneous infliximab showed a favorable efficacy profile for achieving clinical remission and endoscopic outcomes during maintenance treatment in CD or UC.

Comparative maintenance performance of all biologic agents and small molecules in ulcerative colitis: a network meta-analysis

BACKGROUND AND AIMS

Βiologic agents and small molecules have expanded the therapeutic armamentarium of moderate to severe ulcerative colitis (UC). However, their comparative efficacy and safety performance as maintenance treatments have not been sufficiently explored. We performed a systematic review and network meta-analysis (NWM) to assess the comparative efficacy and safety of all approved and emerging treatments for maintenance in moderate to severe UC.

METHODS

We searched Pubmed/Medline, EMBASE, and Cochrane Library databases for relevant RCTs through April 2023. The primary endpoint was clinical remission at the end of the maintenance therapy. Data were analyzed by means of a Bayesian NWM. The ranking probability concerning efficacy and safety was evaluated by means of surfaces under cumulative ranking (SUCRA) values.

RESULTS

There were 20 eligible RCTs with 7660 patients randomized to 20 treatments. RCTs were grouped into two study designs, that is, re-randomization of patients after an induction period and treat-through patients. Concerning efficacy, in re-randomized patients, upadacitinib 30 mg/day was ranked first (SUCRA 94.9%) whereas in treat-through patients etrasimod 2 mg/day was ranked first (SUCRA 91.1%). The integrated efficacy-safety hierarchical analysis, showed that tofacitinib 10 mg had the best efficacy-safety therapeutic profile in re-randomized patients, whereas in treat-through patients infliximab 3.5 mg/Kg Q8W showed the best efficacy-safety profile.

CONCLUSION

For maintenance treatment, in moderate to severe UC, this NWM showed that upadacitinib 30 mg/day and etrasimod 2 mg/day were ranked best for efficacy in re-randomized and treat-through patients respectively. Tofacitinib 10 mg/day and infliximab 3.5 mg/Kg Q8W showed the best efficacy-safety therapeutic profile in re-randomized and treat-through patients respectively.

Fragility index analysis for randomized controlled trials of approved biologicals and small molecule drugs in inflammatory bowel diseases

INTRODUCTION

Biologics and small molecules have been increasingly applied in Crohn's disease (CD) and ulcerative colitis (UC). But the robustness of their trials has not been evaluated.

METHODS

We initially collected all the approved biologics or small molecules for CD or UC up to December 1, 2022. Databases were then queried by keywords in chemical name and CD or UC. Randomized controlled trials (RCTs) in the two-arm, 1:1 design were included. Fragility index (FI) and fragility quotient (FQ) were subsequently calculated.

RESULTS

We included twenty-eight RCTs, including nine pivotal trials listed in approval labels, nineteen non-pivotal trials not included in the labels. The median sample size was 99 [IQR, 60-262] and the median number of loss-of-follow-up (LFU) was 14 [IQR, 8-43]. Pivotal trials in the labels had the median FI of 8 [IQR, 4-14, n = 6] that was marginally higher than non-pivotal trials (3 [IQR, 2-4], p = 0.08). The median FQ was 0.0330 [IQR, 0.1220-0.0466] and 0.0310 [IQR, 0.0129-0.0540] for pivotal and non-pivotal trials, respectively (p = 1.0). The sample size and FI were significantly correlated (Spearman correlation coefficient [r] = 0.56, 95 %CI 0.21-0.78, p = 0.003). The number of total events was also significantly correlated with FI (r = 0.53, 95 %CI 0.17-0.77, p = 0.006). Study p-values were significantly associated with FI (p = 0.01): trials with p-values < 0.001 had the highest median FI of 10 [IQR, 6-17]. No factor was found strongly correlated with FQ.

CONCLUSION

Results from trials assessing administration-approved biologics or small molecules for treating CD or UC were vulnerable to small changes by measuring FI or FQ. Pivotal studies contributing to regulatory approvals exhibited a relatively higher degree of resilience compared to non-pivotal trials.

Comparing the Efficacy and Safety of Adalimumab and Vedolizumab in Treating Moderate to Severe Crohn's Disease and Ulcerative Colitis

Background

Numerous patients with inflammatory bowel disease (IBD) do not respond to conventional or biological therapy. Adalimumab (ADA) and vedolizumab (VDZ), according to certain research, may be a useful alternative treatment for these people. The purpose of this study was to assess the effectiveness and safety of using ADA and VDZ to treat moderate to severe IBD: Crohn's disease (CD) and ulcerative colitis (UC).

Methods

We searched PubMed, Medline, Web of Science, Scopus, the Cochrane Library, Embase, Google Scholar, CINAHL, Clinicaltrials.gov, and WHO trials registry (ICTRP). Randomized controlled trials (RCTs) comparing ADA or VDZ with placebo in participants with active CD or UC were included. The primary outcomes were the clinical response and remission at induction and maintenance phases and mucosal healing. The secondary outcome was the incidence of profound negative events. The research used Comprehensive Meta-Analysis version 3 (Biostat Inc., USA).

Results

Eighteen RCTs were incorporated, in which 11 studies described the usefulness and safeness of ADA or VDZ in CD patients, and seven studies investigated the efficacy and safety of ADA or VDZ in UC patients. The meta-analysis revealed that both ADA and VDZ treatments were superior to placebo for producing clinical remission and eliciting clinical response at induction and maintenance phases in individuals with moderately to severely active CD or UC. Interestingly, we found that ADA was superior to VDZ as first-line treatment for patients with CD, but not UC.

Conclusion

ADA and VDZ are effective and safe in CD and UC patients. However, RCTs of a larger number of patients are still required for better assessing the safety profile of ADA and VDZ.

An indirect comparison of efficacy including histologic assessment and safety in biologic therapy in ulcerative colitis: Systemic review and network meta-analysis

BACKGROUNDS AND AIMS

There are currently no studies comparing histologic remission of FDA-approved biologics for moderate to severe ulcerative colitis (UC), except for one head-to-head VARSITY trial. The current study employs a network meta-analysis to compare the efficacy, including histologic remission and safety of biologic agents for UC.

METHODS

Using four electronic databases, including Pubmed, EMBASE, The Cochrane Library, and ClinicalTrials.gov, a search was conducted of all literature published until September 2022. Included were studies of randomized controlled trials with adult patients with moderate to severe UC using biologics approved by the FDA. An odd ratio with a 95 percent credible interval and ranking information was calculated for each endpoint.

RESULTS

The results of the network meta-analysis did not reveal statistically significant differences among biological agents. However, the ranking information for each biological agent exhibited the following patterns. Vedolizumab was ranked first for overall efficacy endpoints in the maintenance phase, including histologic remission. Except for histologic remission, Ustekinumab was identified as the top-ranked drug for induction phase efficacy endpoints other than histologic remission. Adalimumab was identified as the top-ranked drug for maintenance phase corticosteroid-free remission. Vedolizumab was identified as the top-ranked drug in the induction phase for Treatment Emergent Adverse Events (TEAE). Adalimumab was identified as the top-ranked drug in the induction phase for infection. For TEAE and infection in the maintenance phase and Treatment Emergent Severe Adverse Events (TESAE) in both the induction and maintenance phases, Ustekinumab was determined to be the top-ranked medication.

CONCLUSIONS

Including histologic remission, for the overall efficacy endpoints in the maintenance phase, VDZ was identified as the first rank drug, but there was no statistically significant difference between biologics. Therefore, the generalization of the results of this study is bounded due to the intrinsic limitations of the study provided.

A Comparison of Treatment Effect Sizes in Matched Phase 2 and Phase 3 Trials of Advanced Therapeutics in Inflammatory Bowel Disease: Systematic Review and Meta-Analysis

INTRODUCTION

Phase 2 trials are fundamental to the rational and efficient design of phase 3 trials. We aimed to determine the relationship of treatment effect size estimates from phase 2 and phase 3 clinical trials on advanced therapeutics in inflammatory bowel disease.

METHODS

MEDLINE, EMBASE, CENTRAL, and the Cochrane library were searched from inception to December 19, 2022, to identify paired phase 2 and 3 placebo-controlled induction studies of advanced therapeutics for Crohn's disease (CD) and ulcerative colitis (UC). Treatment effect sizes were expressed as a risk ratio (RR) between the active arm and placebo arm. For the same therapeutics, RRs from phase 2 trials were divided by the RR from phase 3 trial to quantify the relationship of effect sizes between phases.

RESULTS

Twenty-two studies (9 phase 2 trials, 13 phase 3 trials) were included for CD and 30 studies (12 phase 2 trials, 18 phase 3 trials) for UC. In UC (pooled RR 0.72; 95% confidence interval: 0.58-0.86; RR <1 indicates smaller treatment effect sizes in phase 2 trials), but not CD (pooled RR 1.01; 95% confidence interval: 0.84-1.18), phase 2 trials systematically underestimated treatment effect sizes for the primary endpoint compared with phase 3 trials. The underestimation was observed for clinical, but not endoscopic, endpoints in UC.

DISCUSSION

Treatment effect sizes for the primary and clinical endpoints were similar across clinical trial phases in CD, but not UC, where only endoscopic endpoints were comparable. This will help inform clinical development plans and future trial design.

Comparison of treatment effect between phase 2 and phase 3 trials in patients with inflammatory bowel disease

BACKGROUND AND AIMS

The accumulation of multiple randomized controlled trials in the field of inflammatory bowel diseases provides an opportunity to compare treatment effects between phase 2 and 3 trials. We aimed to determine whether treatment effects observed in phase 3 investigating biologics and small molecule drugs differed from those in their preceding phase 2 trial.

METHODS

We first performed a review of phase 2 and phase 3 trials enrolling ulcerative colitis (UC) or Crohn's disease (CD) patients. We compared the percent overall success for key endpoints between phases (several phase 3 could be matched to a single phase 2 trial). Then, we compared the percent overall success in the matched phase 2 and 3 trials (ratio 1:1), and performed sensitivity analysis.

RESULTS

We identified 14 phase 2 (8 CD; 6 UC) and 24 phase 3 (13 CD; 11 UC) trials. In CD, the different analyses suggest that the percentage of overall success of clinical remission and clinical response was significantly higher in phase 2 than in phase 3 trials. In UC, the analyses suggest collectively that the percent of treatment effect seemed similar for clinical remission, clinical response and histologic outcomes between phases but with a lower percentage of overall success in phase 2 than in phase 3 trials for endoscopic endpoints.

CONCLUSIONS

In UC, we observed a similar percentage of treatment effect for clinical and histologic outcomes between phase 2 and 3 trials but not for endoscopic outcomes. Whereas in CD, we showed a failure to reproduce similar results between phases. These results may help sponsors in the design of future drug development programs.

Efficacy and safety of vedolizumab in the treatment of patients with inflammatory bowel disease: A systematic review and meta‑analysis of randomized controlled trials

Few studies have thoroughly assessed the efficacy and safety of vedolizumab (VDZ) in the treatment of inflammatory bowel disease (IBD). Therefore, this systematic review and meta-analysis was performed to further evaluate this association. PubMed, Embase, and the Cochrane databases were searched until April 2022. Randomized controlled trials (RCTs) evaluating the efficacy and safety of VDZ in the treatment of IBD were included. The risk ratio (RR) and 95% confidence intervals (CI) were estimated for each outcome using a random effects model. A total of 12 RCTs, including 4,865 patients, met the inclusion criteria. In the induction phase, VDZ was more effective than placebo for patients with ulcerative colitis and Crohn's disease (CD) in clinical remission (RR=2.09; 95% CI=1.66-2.62) and clinical response (RR=1.54; 95% CI=1.34-1.78). In the maintenance therapy group, VDZ reached higher clinical remission (RR=1.98; 95% CI=1.58-2.49) and clinical response (RR=1.78; 95% CI=1.40-2.26) rates compared with the placebo group. VDZ particularly improved clinical remission (RR=2.07; 95% CI=1.48-2.89) and clinical response (RR=1.84; 95% CI=1.54-2.21) in patients with TNF antagonist failure. In terms of corticosteroid-free remission, VDZ was also more effective than placebo in patients with IBD (RR=1.98; 95% CI=1.51-2.59). In Crohn's patients, VDZ was more effective than placebo in terms of mucosal healing (RR=1.78; 95% CI=1.27-2.51). With respect to adverse events, VDZ significantly reduced the risk of IBD exacerbation compared with the placebo (RR=0.60; 95% CI=0.39-0.93; P=0.023). However, when compared with the placebo, VDZ increased the risk of nasopharyngitis in patients with CD (RR=1.77; 95% CI=1.01-3.10; P=0.045). No significant differences in other adverse events were observed. Although there might be underlying risk, such as selection bias, in the present study it can be safely concluded that VDZ is a safe and effective biological agent for IBD, particularly for patients with TNF antagonist failure.

Safety and Effectiveness of Vedolizumab in Patients with Moderate-to-Severe Ulcerative Colitis: An Interim Analysis of a Japanese Post-Marketing Surveillance Study

INTRODUCTION

This ongoing post-marketing surveillance monitors the long-term safety and effectiveness of vedolizumab in routine clinical practice in patients with moderate-to-severe ulcerative colitis (UC) in Japan. This interim analysis assessed induction-phase data, covering the initial three doses of vedolizumab.

METHODS

Patients were enrolled via a web-based electronic data capture system from approximately 250 institutions. Incidence of adverse events and treatment responses were assessed by the physicians after the patient had received three doses of vedolizumab or when the drug was discontinued, whichever occurred first. Therapeutic response was defined as any treatment response, including remission or improvement of complete or partial Mayo score, and was assessed in the total and stratified patient populations according to prior tumor necrosis factor alpha (TNFα) inhibitor treatments and/or baseline partial Mayo score.

RESULTS

The total incidence of adverse drug reactions (ADRs) was 4.10% (11/268). Common ADRs were dizziness, nausea, and arthralgia, each reported in 0.75% of patients (2/268). Serious ADRs were herpes zoster oticus and UC, each reported in 0.37% of patients (1/268). Therapeutic response was reported in 84.5% (218/258) of all patients, 85.8% (127/148) of TNFα inhibitor-naïve patients, and 82.7% (91/110) of TNFα inhibitor-experienced patients. Among patients with partial Mayo score of ≥ 4 at baseline, partial Mayo score remission in patients without or with prior TNFα inhibitor treatment was 62.5% (60/96) and 45.6% (36/79), respectively.

CONCLUSION

The results confirm a safety and effectiveness profile of vedolizumab consistent with that observed in previous trials.

CLINICAL TRIAL REGISTRATION

JapicCTI-194603, NCT03824561.

Cost-Effectiveness Analysis of Tofacitinib Compared with Biologics in Biologic-Naïve Patients with Moderate-to-Severe Ulcerative Colitis in Japan

OBJECTIVE

Tofacitinib is an oral Janus kinase inhibitor approved for the treatment of ulcerative colitis (UC). The objective of this study was to evaluate the long-term cost-effectiveness of tofacitinib versus current biologics, considering combinations of first-line (1L) and second-line (2L) therapies, from a Japanese payer's perspective in patients with moderate-to-severe active UC following an inadequate response to conventional therapy and in those who were naïve to biologics.

METHODS

A cost-effectiveness analysis was conducted during the time horizon specified in the Markov model, which considers a patient's lifetime as 60 years and an annual discount rate of 2% on costs and effects. The model compared tofacitinib with vedolizumab, infliximab, adalimumab, golimumab, and ustekinumab. The time of active treatment was divided into induction and maintenance phases. Patients not responding to their biologic treatment after induction or during the maintenance phase were switched to a subsequent line of therapy. Treatment response and remission probabilities (for induction and maintenance phases) were obtained through a systematic literature review and a network meta-analysis that employed a multinomial analysis with fixed effects. Patient characteristics were sourced from the OCTAVE Induction trials. Mean utilities associated with UC health states and adverse events (AEs) were obtained from published sources. Direct medical costs related to drug acquisition, administration, surgery, patient management, and AEs were derived from the JMDC database analysis, which corresponded with the medical procedure fees from 2021. The drug prices were adjusted to April 2021. Further validation through all processes by clinical experts in Japan was conducted to fit the costs to real-world practices. Scenario and sensitivity analyses were also performed to confirm the accuracy and robustness of the base-case results.

RESULTS

In the base-case, the treatment pattern including 1L tofacitinib was more cost-effective than vedolizumab, infliximab, golimumab, and ustekinumab for 1L therapies in terms of cost per quality-adjusted life year (QALY) gained (based on the Japanese threshold of 5,000,000 yen/QALY [38,023 United States dollars {USD}/QALY]). The base-case results demonstrated that the incremental costs would be reduced for all biologics, and decreases in incremental QALYs were observed for all biologics other than adalimumab. The incremental cost-effectiveness ratio (ICER) was found to be dominant for adalimumab; for the other biologics, it was found to be less costly and less efficacious. The efficiency frontier on the cost-effectiveness plane indicated that tofacitinib-infliximab and infliximab-tofacitinib were more cost-effective than the other treatment patterns. When infliximab-tofacitinib was compared with tofacitinib-infliximab, the ICER was 282,609,856 yen/QALY (2,149,157 USD/QALY) and the net monetary benefit (NMB) was -12,741,342 yen (-96,894 USD) with a threshold of 5,000,000 yen (38,023 USD) in Japan. Therefore, infliximab-tofacitinib was not acceptable by this threshold, and tofacitinib-infliximab was the cost-effective treatment pattern.

CONCLUSION

The current analysis suggests that the treatment pattern including 1L tofacitinib is a cost-effective alternative to the biologics for patients with moderate-to-severe UC from a Japanese payer's perspective.

Most Placebo-Controlled Trials in Inflammatory Bowel Disease were Underpowered Because of Overestimated Drug Efficacy Rates: Results from a Systematic Review of Induction Studies

BACKGROUND AND AIMS

Most pharmaceutical clinical trials for inflammatory bowel disease [IBD] are placebo-controlled and require effect size estimation for a drug relative to placebo. We compared expected effect sizes in sample size calculations [SSCs] to actual effect sizes in IBD clinical trials.

METHODS

MEDLINE, EMBASE, CENTRAL and the Cochrane library were searched from inception to March 26, 2021, to identify placebo-controlled induction studies for luminal Crohn's disease [CD] and ulcerative colitis [UC] that reported an SSC and a primary endpoint of clinical remission/response. Expected effects were subtracted from actual effects, and interquartile ranges [IQRs] for each corresponding median difference were calculated. Linear regression was used to assess whether placebo or drug event rate misspecifications were responsible for these differences.

RESULTS

Of eligible studies, 36.9% [55/149] were excluded because of incomplete SSC reporting, yielding 94 studies [46 CD, 48 UC]. Treatment effects were overestimated in CD for remission (-12.6% [IQR: -16.3 to -1.6%]), in UC for remission (-10.2% [IQR: -16.5 to -5.6%]) and in CD for response (-15.3% [IQR: -27.1 to -5.8%]). Differences observed were due to overestimated drug event rates, whereas expected and actual placebo event rates were similar. A meta-regression demonstrated associations between overestimated treatment effect sizes and several trial characteristics: isolated ileal disease, longer CD duration, extensive colitis [UC], single-centre, phase 2 and no endoscopic endpoint component [UC].

CONCLUSION

Overestimation of IBD therapy efficacy rates resulted in smaller-than-expected treatment effects. These results should be used to inform SSCs and trial design for IBD drug development.

The Efficacy of Currently Licensed Biologics for Treatment of Ulcerative Colitis: A Literature Review

Biologics have been emerging as promising therapies in ulcerative colitis (UC) patients who are refractory to conventional medical treatment. This literature review aims to appraise the existing evidence on the efficacy and safety of NICE approved biological therapies, of which there are currently five licensed drugs, available for the treatment of UC in adults. An initial search was performed using National Institute of Clinical Excellence (NICE) guidelines. A further literature search of EMBASE, MEDLINE, Science Direct and Cochrane Library databases was done, resulting in a total of 62 studies being included in this review. Recent and seminal papers were included. Inclusion criteria for this review were adult participants and English papers only. In most studies, anti-tumour necrosis factor ɑ (TNFɑ) naïve patients were found to have improved clinical outcomes. Infliximab was found to be highly effective in inducing short-term clinical response, clinical remission as well as mucosal healing. However, loss of response was common and dose escalation was often required for achievement of long-term efficacy. Adalimumab was found to have both short-term and long-term efficacy which was also supported by real-world data. Golimumab was shown to have comparable efficacy and safety profiles to other biologics, although lack of therapeutic dose monitoring and loss of response is a barrier to optimising golimumab treatment efficacy. Vedolizumab was shown to have higher clinical remission rates when compared to adalimumab in a head-to-head trial, and the most cost-effective biologic when calculating quality-adjusted life years. Ustekinumab was found to significantly improve clinical remission rates in UC patients who were previously unresponsive to other biological treatments. However, as this is a newly licensed drug, there is limited literature currently available. Further, head-to-head studies are required to help determine the optimal treatment for patients with UC. With patents expiring, the development of biosimilars will help to reduce costs and increase the availability of these drugs to patients.

Opportunistic Infections in Patients with Inflammatory Bowel Disease Treated with Advanced Therapies: A Systematic Review and Meta-Analysis of Randomized Controlled Trials

BACKGROUND AND AIMS

Advanced therapies for inflammatory bowel disease [IBD] could potentially lead to a state of immunosuppression with an increased risk of opportunistic infections [OIs]. We aimed to provide an update on the incidence of OIs among adult IBD patients in randomized controlled trials [RCTs] of approved biologics and small-molecule drugs [SMDs]. Also, we aimed to describe OI definitions utilized in RCTs, to ultimately propose a standardized definition.

METHODS

Electronic databases were searched from January 1, 1990, until April 16, 2022. Our primary outcome was incidence rate of overall OIs among IBD patients exposed and unexposed to biologics or SMDs. We also describe specific OIs reported in included trials, as well as definitions of OIs within studies when provided.

RESULTS

Ninety studies were included. The incidence rates of reported OIs were 0.42 and 0.21 per 100 person-years in patients exposed to advanced therapies and placebo, respectively. This was highest for anti-tumour necrosis factors [0.83 per 100 person-years] and Janus kinase inhibitors [0.55 per 100 person-years] and lowest for anti-integrins and ozanimod. On meta-analysis, no increased risk of OIs was observed. None of the studies provided a detailed definition of OIs, or a comprehensive list of infections considered as OIs.

CONCLUSION

Different mechanisms of action may have specific OI profiles. In the absence of a uniform definition of OIs, these estimates are less reliable. We propose a definition to be used in future studies to help provide standardized reporting. When using this definition, we saw significant differences in incidence rates of OIs across mechanisms of action.

Guidelines for the management of ulcerative colitis. Recommendations of the Polish Society of Gastroenterology and the Polish National Consultant in Gastroenterology

This paper is an update of the diagnostic and therapeutic recommendations of the National Consultant for Gastroenterology and the Polish Society of Gastroenterology from 2013. It contains 49 recommendations for the diagnosis and treatment, both pharmacological and surgical, of ulcerative colitis in adults. The guidelines were developed by a group of experts appointed by the Polish Society of Gastroenterology and the National Consultant in the field of Gastroenterology. The methodology related to the GRADE methodology was used to assess the quality of available evidence and the strength of therapeutic recommendations. The degree of expert support for the proposed statements was assessed on a 6-point Likert scale. Voting results, together with comments, are included with each statement.

Korean clinical practice guidelines on biologics and small molecules for moderate-to-severe ulcerative colitis

Ulcerative colitis (UC), a relapsing-remitting chronic inflammatory bowel disease (IBD), has a variable natural course but potentially severe disease course. Since the development of anti-tumor necrosis factor (TNF) agents has changed the natural disease course of moderate-to-severe UC, therapeutic options for patients who failed conventional treatments are expanding rapidly. IBD clinical trials have demonstrated the potential efficacy and safety of novel biologics such as anti-integrin α4β7 and anti-interleukin-12/23 monoclonal antibodies and small molecules such as a Janus kinase inhibitor. Anti-TNF biosimilars also have been approved and are widely used in IBD patients. Wise drug choices should be made considering evidence-based efficacy and safety. However, the best position of these drugs remains several questions, with limited data from direct comparative trials. In addition, there are still concerns to be elucidated on the effect of therapeutic drug monitoring and combination therapy with immunomodulators. The appropriate treatment regimens in acute severe UC and the risk of perioperative use of biologics are unclear. As novel biologics and small molecules have been approved in Korea, we present the Korean guidelines for medical management of adult outpatients with moderate-to-severe UC and adult hospitalized patients with acute severe UC, focusing on biologics and small molecules.

Cost Effectiveness of Tofacitinib for the Treatment of Moderate to Severe Active Ulcerative Colitis in Colombia

OBJECTIVE

The aim of this study was to evaluate the cost effectiveness of tofacitinib versus other treatment options currently available in Colombia in naïve to biologics (first-line) and exposed to biologics (second-line) patients with moderate to severe active ulcerative colitis (UC).

METHODS

A Markov model was constructed with 8-week cycles, simulating a cohort of patients in a 5-year time horizon. The health states included remission, treatment response, active UC, and colectomy. The transition probabilities for the induction and maintenance phase were obtained from a network meta-analysis, and effectiveness was measured using quality-adjusted life-years (QALYs). Unit costs were derived from official national sources.

RESULTS

For first line, the incremental cost-effectiveness ratio (ICER) per QALY was $883 for tofacitinib and $3619 for infliximab, compared with adalimumab. Sensitivity analysis showed that tofacitinib is cost effective in 45% of the iterations, adalimumab in 5%, and infliximab in 50%. Meanwhile, the ICER of adalimumab was $14,927 compared with tofacitinib in second-line treatment. In the sensitivity analysis, tofacitinib was cost effective in 64% of the iterations, followed by adalimumab in 36%. Infliximab and golimumab were not included due to data limitations in the network meta-analysis of second-line treatment.

CONCLUSION

The analysis suggests that in Colombia, treatment with tofacitinib for patients with moderate-to-severe UC is a cost-effective option in both lines compared with other treatment options.

Early Clinical Remission Is a Predictor of Long-Term Remission with the Use of Vedolizumab for Ulcerative Colitis

Vedolizumab (VDZ) is an α4β7 integrin-antibody used to manage refractory ulcerative colitis (UC). This retrospective multicenter study aimed to identify predictors of efficacy or the time points when evaluation of VDZ therapy for UC would be most useful. We compiled data on 87 patients with moderate to severe active UC that was treated with VDZ. Overall clinical remission (CR) rates at 6 weeks and 52 weeks after VDZ administration were 44.4% (bio-naïve 44.2%, bio-failure 44.8%) and 52.8% (bio-naïve 53.5%, bio-failure 51.7%) respectively. Also, 83.3% (bio-naïve 81.3%, bio-failure 85.7%) of patients achieved mucosal healing at week 52. Among patients with a CR at week 52, 73.3% had a CR at week 6. In contrast, of patients who discontinued VDZ, 82.4% had not reached a CR at week 6. Our study demonstrated that VDZ was effective in a large percentage of UC patients, with a high mucosal healing rate even after prior biological exposures. This suggests that VDZ can be a treatment option even in bio-failure cases. Additionally, it was considered that early CR can predict long-term remission and that week 6 can be a helpful evaluation point for treatment decisions when using VDZ for UC.

Efficacy and safety of vedolizumab for inflammatory bowel diseases: A systematic review and meta-analysis of randomized controlled trials

BACKGROUND

Vedolizumab is a humanized monoclonal antibody that inhibits gut-selective α4β7 integrins on the surface of leukocytes, preventing their trafficking into the gastrointestinal tract, and ultimately achieves the effect of suppressing intestinal inflammation. This study aimed to evaluate the efficacy and safety of vedolizumab in the treatment of inflammatory bowel disease.

METHODS

After a systematic review of relevant studies, the pooled relative risk (RR) and 95% confidence intervals (CIs) were calculated to evaluate the effect. Heterogeneity was explored using sensitivity analysis, univariate meta-regression, and subgroup analysis. Potential publication bias was evaluated using Egger test and trim-and-fill method.

RESULTS

Nine randomized controlled trials involving 4268 participants were included in the meta-analysis. During induction therapy, vedolizumab was more effective than placebo in treating active ulcerative colitis and Crohn disease in terms of clinical response (RR = 1.55, 95%CI: 1.35-1.78), clinical remission (RR = 1.90, 95%CI: 1.50-2.41), and mucosal healing (RR = 1.53, 95%CI: 1.21-1.95). A superior effect in terms of durable Clinical or Crohn disease Activity Index-100 response (RR = 1.65, 95%CI: 1.20-2.26), clinical remission (RR = 1.92, 95%CI: 1.48-2.50), and glucocorticoid-free remission (RR = 2.22, 95%CI: 1.71-2.90) was found during maintenance treatment. Vedolizumab was not associated with any adverse events and was as safe as placebo in terms of the risk of serious adverse reactions.

CONCLUSIONS

Vedolizumab may be safe and effective as an induction and maintenance therapy for the treatment of inflammatory bowel disease; however, further studies are needed to validate this conclusion.

Endoscopic mucosal healing and histologic remission in ulcerative colitis: a systematic literature review of clinical, quality-of-life and economic outcomes

OBJECTIVE

This systematic literature review (SLR) assessed the effects of endoscopic mucosal healing and histologic remission on clinical, quality-of-life (QoL), and economic outcomes in adults with ulcerative colitis (UC) in the real-world setting.

METHODS

Literature searches of Embase and MEDLINE (6 July 2020) and conference proceedings (2017-2020) were performed according to Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. Eligible studies included adults with UC with documented endoscopic mucosal healing or histologic remission. Clinical, QoL, and economic outcomes were extracted and narratively synthesized.

RESULTS

Of 1603 studies screened, 25 met eligibility criteria and collectively included 2813 patients (mean age: 34-60 years). The most commonly reported indices were Mayo endoscopic score (MES) for endoscopic mucosal healing (n = 22, 88%) and Geboes score (n = 5, 20%) for histologic outcomes. The most frequently reported clinical outcome was relapse-free survival (n = 15, 60%). Less commonly reported outcomes were avoidance of colectomy (n = 5, 20%), hospitalization (n = 4, 16%), clinical remission (n = 4, 16%), and steroid-free clinical remission (n = 3, 12%). Most studies reported relapse-free survival rates up to 50% over 6-48 months of follow-up in endoscopic mucosal healing cohorts. Studies reporting results by MES demonstrated higher relapse-free survival rates among patients with MES 0 than with MES 1 (32%-100% vs 26%-86%, respectively). Similarly, patients with histologic remission had better relapse-free survival rates over 12-24 months of follow-up compared with those without histologic remission (72%-91% vs 40%-63%, respectively). Rates of clinical remission, steroid-free remission, hospitalization, and colectomy avoidance were also better among patients with endoscopic mucosal healing and histologic remission. Two studies examining QoL reported endoscopic mucosal healing was associated with improved QoL. No study reported economic outcomes.

CONCLUSIONS

This SLR demonstrated consistent evidence of improved clinical outcomes among UC patients with endoscopic mucosal healing and histologic remission.

Potential benefits of immunomodulator use with vedolizumab for maintenance of remission in ulcerative colitis

BACKGROUND AND AIM

This study aimed to determine the efficacy and safety of vedolizumab treatment with or without concomitant immunomodulator use in Japanese patients with moderate-to-severe ulcerative colitis.

METHODS

Among enrolled patients in a phase 3 study conducted in Japan (clinicaltrials.gov, NCT02039505), data from patients allocated to 300-mg intravenous vedolizumab for induction and maintenance phases were used for this exploratory analysis. Efficacy endpoints were clinical response, clinical remission, and mucosal healing at week 10 and clinical remission and mucosal healing at week 60, and disease worsening and treatment failure during the maintenance phase.

RESULTS

At week 10, the differences in clinical response, clinical remission, and mucosal healing rates between the subgroups (those with concomitant immunomodulator use minus those without) were 0.7 (95% confidence interval: -14.3, 15.7), 3.3 (95% confidence interval: -8.5, 15.2), and 1.8 (95% confidence interval: -13.0, 16.5), respectively. At week 60, the differences in clinical remission and mucosal healing between the subgroups with and without concomitant immunomodulator use were 26.1 (95% confidence interval: -3.5, 55.6) and 29.9 (95% confidence interval: 1.4, 58.4), respectively. The proportions of patients without treatment failure at day 330 of the maintenance phase were 90.7% with concomitant immunomodulator use and 73.7% without. No marked differences in incidence of infections were observed between subgroups.

CONCLUSIONS

This study suggested the possibility that concomitant immunomodulator use may be beneficial to maintain the clinical efficacy of vedolizumab.

Clinical Outcomes and Response Predictors of Vedolizumab Induction Treatment for Korean Patients With Inflammatory Bowel Diseases Who Failed Anti-TNF Therapy: A KASID Prospective Multicenter Cohort Study

BACKGROUND

We investigated the real-life effectiveness and safety of vedolizumab (VDZ) induction therapy among Korean patients with Crohn disease (CD) or ulcerative colitis (UC) for whom anti-tumor necrosis factor therapy previously failed.

METHODS

Adult patients who started VDZ induction therapy at 16 centers were prospectively enrolled in the Korean VDZ nationwide registry. The coprimary outcomes were clinical remission, defined as a Crohn's Disease Activity Index score <150 points and a partial Mayo score ≤2 points with a combined rectal bleeding and stool frequency subscore ≤1 point at week 14 and endoscopic remission defined as a Mayo endoscopic subscore ≤1 point. We also analyzed predictors of clinical remission.

RESULTS

Between August 2017 and November 2019, a total of 158 patients (80 with CD and 78 with UC) received VDZ induction therapy. Clinical remission rates among patients with CD and patients with UC were 44.1% and 44.0%, respectively. Among patients with UC, the endoscopic remission rate was 32.4%. Clinical response and remission rates showed increasing trends during induction therapy. Multivariable analysis revealed that clinical response at week 6 was the only predictor of clinical remission at week 14 for both patients with CD and patients with UC. Among patients who experienced 1 or more adverse events (n = 71; 44.9%), disease exacerbation (n = 28; 17.7%) was the most common adverse event.

CONCLUSIONS

Among Korean patients with CD or UC for whom anti-tumor necrosis factor therapy failed, VDZ induction therapy was effective and safe. The early clinical response was associated with clinical remission after VDZ induction therapy.

Efficacy and Safety of Vedolizumab in Management of Moderate to Severe Ulcerative Colitis: A Systematic Review

Ulcerative colitis (UC) is an inflammatory bowel disease and causes inflammation and ulcer of the colon. Vedolizumab is a newer biological agent with an inhibitory effect on α4β7 integrin approved for moderate to severe UC patients. Our study reviewed the clinical response, clinical remission, and mucosal healing of vedolizumab in moderate to severe UC management. Using Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, we conducted a literature search in PubMed, Google Scholar, and Science Direct, and nine studies were included in the systematic review. At week six, vedolizumab showed a significant clinical response. At week 52, vedolizumab showed significant mucosal healing and clinical remission. The most commonly associated adverse effects are nasopharyngitis, oropharyngeal infection, and gastrointestinal infection. However, additional clinical trials and observational studies with longer follow-ups are required to study the efficacy and safety of the drug.

Efficacy and safety of fecal transplantation versus targeted therapies in ulcerative colitis: network meta-analysis

Aim: We conducted this network meta-analysis to compare the efficacy and safety of targeted pharmacotherapies and fecal microbial transplantation (FMT). Patients & methods: Nineteen studies were included and there was only one head-to-head randomized controlled trial (adalimumab vs vedolizumab). Results: All interventions, including FMT, were superior to a placebo in inducing clinical remission (except adalimumab - odds ratio 1.66; 95% CI: 0.97-2.85), clinical response and endoscopic remission. FMT was comparable with other agents in achieving all efficacy outcomes. Infliximab was ranked highest in inducing clinical remission (surface under the cumulative ranking, 0.8). There was no difference in safety outcomes between FMT and other targeted therapies. Conclusion: FMT is as efficacious and as safe as other targeted therapies in inducing clinical remission, clinical response and endoscopic remission. Further studies to assess the long-term benefits are needed in order to reach a definitive conclusion.

Clinical response of vedolizumab at week 6 predicted endoscopic remission at week 24 in ulcerative colitis

Background and Aim

Vedolizumab is a humanized monoclonal antibody that selectively inhibits the migration of gut‐homing memory T cells into the intestinal submucosa by antagonizing the interaction of α₄β₇ integrin with MAdCAM‐1. Vedolizumab is employed for ulcerative colitis with moderate to severe activity; however, predictors of its clinical efficacy have not been established in real‐world clinical practice. We investigated the clinical characteristics predicting vedolizumab efficacy.

Methods

This was a single‐center, retrospective, observational study that enrolled patients with ulcerative colitis at Kyorin University Hospital. Fifty‐two consecutive patients who started vedolizumab induction therapy and were tracked for minimum 14 weeks between August 2018 and February 2021 were included. Clinical and endoscopic disease activities were scored at baseline and at weeks 2, 6, and 14 with the Lichtiger index and at baseline and week 24 with the Mayo endoscopic subscore, respectively. Clinical remission, clinical response, and endoscopic remission were defined as Lichtiger index of ≤3, Lichtiger index of ≤10 with a reduction of minimum 3 points from baseline, and Mayo endoscopic subscore of ≤1, respectively.

Results

In these cases, clinical response/remission rates at weeks 2, 6, and 14 were 26.9%/15.3%, 50.0%/46.3%, and 57.6%/50.0%, respectively. The endoscopic remission rate at week 24 was 60%. The clinical response at week 6 was significantly associated with endoscopic remission at week 24 after starting vedolizumab.

Conclusions

In vedolizumab treatment for ulcerative colitis, the clinical response at week 6 can be a predictor for endoscopic remission at week 24.

Week 2 Symptomatic Response with Vedolizumab as a Predictive Factor in Japanese Anti-TNFα-Naive Patients with Ulcerative Colitis: A post hoc Analysis of a Randomized, Placebo-Controlled Phase 3 Trial

BACKGROUND AND AIM

To evaluate the onset of symptomatic response with vedolizumab in patients with moderate-to-severe ulcerative colitis in Japan.

METHODS

Patients were randomized to receive vedolizumab 300 mg or placebo at Weeks 0, 2, and 6. Mayo subscores were analyzed in patients with baseline stool frequency (SF) ≥1 and rectal bleeding (RB) ≥1. In patients with baseline SF ≥2 and RB ≥1, the proportion who achieved SF ≤1 and RB = 0 was determined.

RESULTS

Patients were randomized to vedolizumab (n = 164) or placebo (n = 82). Decrease from baseline in mean SF subscore was greater with vedolizumab versus placebo from Week 2 (-6.6%; 95% confidence interval [CI], -16.2, 3.0), with a greater difference in anti-tumor necrosis factor (TNF)α-naive patients (vedolizumab vs. placebo, -13.2%; 95% CI, -29.7, 3.3). Mean percentage decrease from baseline RB subscore was numerically greater with vedolizumab versus placebo from Week 6 in anti-TNFα-naive patients (-10.7%; 95% CI, -33.0, 11.5). More patients in the anti-TNFα-naive subgroup achieved SF ≤1 and RB = 0 with vedolizumab versus placebo at Week 2 (14.8%; 95% CI, 2.5, 27.0) and Week 6 (20.3%; 95% CI, 4.4, 36.2). Patients with SF ≤1 and RB = 0 at Week 2 had higher clinical response, clinical remission, and mucosal healing rates at Week 10 than those without.

CONCLUSIONS

Our results indicate that vedolizumab induces a rapid symptomatic response, particularly in anti-TNFα-naive patients, and suggest that early symptomatic improvement predicts treatment response at Week 10 (NCT02039505).

The real-world outcomes of vedolizumab in patients with ulcerative colitis in Korea: a multicenter retrospective study

AIM

This study examined the real-world effectiveness and safety outcomes of vedolizumab in ulcerative colitis (UC) patients who had failed anti-tumor necrosis factor (anti-TNF) therapy in Korea.

METHODS

A retrospective chart review study was conducted in adults with moderate to severely active UC who had failed anti-TNF agents and subsequently received vedolizumab. Clinical response and clinical remission at week 6 and 14 after vedolizumab initiation was evaluated. Safety outcomes were also reported. Outcome rates were compared with a matched sub-cohort derived from the open-label sub-cohort of the GEMINI 1 trial using the optimal matching method.

RESULTS

A total of 105 patients (mean age, 45.3 years; 63.8% male) were included. At week 6, 55.8% (n = 43/77) achieved a clinical response and 18.2% (n = 14/77) achieved clinical remission. At week 14, 73.2% (n = 52/71) achieved a clinical response and 39.4% (n = 28/71) achieved clinical remission. When non-response imputation was used, the clinical response rate at week 6 and week 14 were 40.1% (n = 43/105) and 49.5% (n = 52/105) respectively. Of the 105 patients, 16 (15.2%) experienced at least one adverse event. The matched analysis showed that the clinical response rate at week 6 was higher in the matched sub-cohort of this study (24/47, 51.1%) versus the matched sub-cohort from the GEMINI 1 open-label cohort (12/47, 34.3%, p = 0.019). The clinical remission rates at week 6 were similar (7/47, 14.9% versus 9/47, 19.1%, p = 0.785).

CONCLUSIONS

In the real-world setting, vedolizumab is effective and well tolerated within the first 14 weeks of use in Korea. The proportion of patients experiencing clinical response and clinical remission at 6 and 14 weeks appeared to be largely consistent with that observed in real-world studies from other regions and populations.

Integrating efficacy and safety of vedolizumab compared with other advanced therapies to assess net clinical benefit of ulcerative colitis treatments: a network meta-analysis

Objectives: Because only one head-to-head randomized trial of biologics for moderate-to-severe UC has been performed, indirect treatment comparisons remain important. This systematic review and network meta-analysis examined efficacy and safety of biologics and tofacitinib for moderate-to-severe UC, using vedolizumab as reference.Methods: Relevant studies (N = 19) of vedolizumab, adalimumab, infliximab, golimumab, ustekinumab, and tofacitinib were identified. Study design differences were addressed by assessing efficacy outcomes conditional on response at maintenance initiation. Primary analysis used fixed-effect models to estimate odds ratios for efficacy and safety endpoints.Results: Compared with vedolizumab 300 mg, adalimumab 160/80 mg was associated with less clinical remission (odds ratio, 0.69 [95% credible interval, 0.54-0.88]), and infliximab 5 mg/kg was associated with more clinical remission (1.67 [1.16-2.42]) and response (1.63 [1.15-2.30]). Adalimumab 40 mg, golimumab 50 mg, and ustekinumab 90 mg Q12W had significantly lower clinical remission rates during maintenance (0.62 [0.45-0.86], 0.55 [0.32-0.95], and 0.59 [0.35-0.99]) versus vedolizumab 300 mg Q8W. Response results were similar. Tofacitinib 10 mg had the highest maintenance treatment efficacy estimates and highest infection risk.Conclusion: Network meta-analysis and novel integrated benefit-risk analysis suggest a potentially favorable efficacy-safety balance for vedolizumab vs adalimumab and other advanced UC therapies.

Real-World Prescription Pattern and Healthcare Cost Among Patients with Ulcerative Colitis in Japan: A Retrospective Claims Data Analysis

Introduction

The prevalence of ulcerative colitis (UC) is increasing in Japan but recent disease burden estimates are unavailable. This study was conducted to explore the prescription pattern and to estimate the economic burden in Japanese patients with UC.

Methods

This retrospective cohort study was conducted from 1 January 2009 to 30 June 2018 using healthcare claims data from the Japan Medical Data Center (JMDC) database. Patients with a UC diagnosis before the index date (the first UC treatment claim) or within 6 months after the index date, a UC treatment claim registered within ≥ 6 months during the selection period, and a continuous enrollment for 6 months pre-index and 12 months follow-up period were included in the study. Prescription pattern was analyzed by calendar years and lines of treatment (LoT). Healthcare resource utilization and cost per month were determined by LoTs.

Results

Among 10,337 patients with UC diagnosis, 1,861 (18.0%) met the eligibility criteria for this study. 5-Aminosalicylic acid (5-ASA) was the most used treatment over the study period and across all LoTs. 5-ASA was also the most prescribed treatment (88.7%) across all the first LoTs, followed by steroids (20.4%). Use of biologics increased over the study period (biologics + 5-ASA: 0.0% in 2009 to 3.0% in 2018). Biologics were most used as the sixth LoT (7.1%, biologics + 5-ASA; 7.1%, biologics + 5-ASA + steroids). Mean total cost per month was JPY 52,782, with the highest (JPY 112,997) total healthcare cost per month in the fourth LoT and the lowest in the first LoT (JPY 56,782).

Conclusion

Prescription pattern in Japanese patients with UC enrolled in the JMDC database were largely consistent with the clinical guidelines in Japan. UC puts a substantial economic burden on patients, and an effective treatment is warranted to reduce the UC disease burden.

Supplementary Information

The online version contains supplementary material available at 10.1007/s12325-020-01615-4.

The effectiveness and value of targeted immune modulators for moderate to severe ulcerative colitis

DISCLOSURES: Funding for this summary was contributed by Arnold Ventures, California Health Care Foundation, The Donaghue Foundation, Harvard Pilgrim Health Care, and Kaiser Foundation Health Plan to the Institute for Clinical and Economic Review (ICER), an independent organization that evaluates the evidence on the value of health care interventions. ICER's annual policy summit is supported by dues from AbbVie, Aetna, America's Health Insurance Plans, Anthem, Alnylam, AstraZeneca, Biogen, Blue Shield of CA, Boehringer-Ingelheim, Cambia Health Services, CVS, Editas, Evolve Pharmacy, Express Scripts, Genentech/Roche, GlaxoSmithKline, Harvard Pilgrim, Health Care Service Corporation, HealthFirst, Health Partners, Humana, Johnson & Johnson (Janssen), Kaiser Permanente, LEO Pharma, Mallinckrodt, Merck, Novartis, National Pharmaceutical Council, Pfizer, Premera, Prime Therapeutics, Regeneron, Sanofi, Spark Therapeutics, uniQure, and United Healthcare. Pandey, Fazioli, and Pearson are employed by ICER. Ollendorf reports grants from ICER related to this study and reports other support from the CEA Registry Sponsors and consulting and advisory board fees from EMD Serono, Amgen, Analysis Group, Aspen Institute/University of Southern California, GalbraithWight, Cytokinetics, Sunovion, University of Colorado, the Center for Global Development, and Neurocrine, unrelated to this work. Bloudek reports grants from ICER related to this work and reports fees from AbbVie, Astellas, Akcea, Dermira, GlaxoSmithKline, Sunovion, Seattle Genetics, TerSera Therapeutics, and Incyte, unrelated to this work. Carlson reports grants from ICER related to this work.

Joint Statement (DZK, DGRh, DDG) on the Tuberculosis Risk with Treatment Using Novel Non-TNF-Alpha Biologicals

BACKGROUND

 While the risk of tuberculosis (TB) reactivation is adequately documented in relation to TNF-alpha inhibitors (TNFi), the question of what the tuberculosis risk is for newer, non-TNF biologics (non-TNFi) has not been thoroughly addressed.

METHODS

 We conducted a systematic review of randomized phase 2 and phase 3 studies, and long-term extensions of same, published through March 2019. Of interest was information pertaining to screening and treating of latent tuberculosis (LTBI) in association with the use of 12 particular non-TNFi. Only rituximab was excluded. We searched MEDLINE and the ClinicalTrial.gov database for any and all candidate studies meeting these criteria.

RESULTS

 677 citations were retrieved; 127 studies comprising a total of 34,293 patients who received non-TNFi were eligible for evaluation. Only 80 out of the 127 studies, or 63 %, captured active TB (or at least opportunistic diseases) as potential outcomes and 25 TB cases were reported. More than two thirds of publications (86/127, 68 %) mentioned LTBI screening prior to inclusion of study participants in the respective trial, whereas in only 4 studies LTBI screening was explicitly considered redundant. In 21 studies, patients with LTBI were generally excluded from the trials and in 42 out of the 127 trials, or 33 %, latently infected patients were reported to receive preventive therapy (PT) at least 3 weeks prior to non-TNFi treatment.

CONCLUSIONS

 The lack of information in many non-TNFi studies on the number of patients with LTBI who were either excluded prior to participating or had been offered PT hampers assessment of the actual TB risk when applying the novel biologics. Therefore, in case of insufficient information about drugs or drug classes, the existing recommendations of the German Central Committee against Tuberculosis should be applied in the same way as is done prior to administering TNFi. Well designed, long-term "real world" register studies on TB progression risk in relation to individual substances for IGRA-positive cases without prior or concomitant PT may help to reduce selection bias and to achieve valid conclusions in the future.

Vedolizumab in Inflammatory Bowel Disease: West versus East

Background

Vedolizumab is a humanized immunoglobulin G1 monoclonal antibody, which binds to α4β7 integrin on T lymphocytes, thus disturbing the interaction with mucosal vascular addressin cell adhesion molecule 1 on the intestinal endothelial cells to interfere with lymphocyte trafficking to the gut.

Summary

Vedolizumab is a safe and effective drug to induce and maintain clinical remission in patients with Crohn's disease (CD) and ulcerative colitis (UC) in both clinical trials and real-world data. Various guidelines recommend vedolizumab as a first- or second-line treatment regimen for steroid-dependent, steroid, or immunomodulator refractory cases of UC and CD; however, it is more effective in anti-TNF-naive patients. The first head-to-head trial (VARSITY trial) comparing the efficacy of vedolizumab to adalimumab has shown better clinical remission and mucosal healing with vedolizumab.

Key Messages

In this review, we have discussed guidelines recommendation of vedolizumab use, as well as its safety data, use in special population, in presence of extraintestinal complications, therapeutic drug monitoring, data from Asian patients, along with other evolving concepts. Because of its excellent safety data and low immunogenicity, vedolizumab is an impressive option for patients with prior malignancy and less chance of reactivation of tuberculosis; however, cost remains an issue.

Respiratory Tract Infections in Inflammatory Bowel Disease Patients Taking Vedolizumab: A Systematic Review and Meta-Analysis of Randomized Controlled Trials

The ongoing COVID-19 pandemic has raised concerns about the risk of SARS-CoV-2 infection in patients with Crohn’s disease (CD) and patients with ulcerative colitis (UC) taking immunosuppressants or biologics. We conducted a systematic review and meta-analysis to assess the risk of respiratory infections in patients with inflammatory bowel disease (IBD) treated with vedolizumab. We searched PubMed, EMBASE and Scopus to identify randomized controlled trials (RCT) comparing vedolizumab to placebo in patients with IBD. Outcomes were the rate of respiratory tract infections (RTI), upper respiratory tract infections (URTI) and lower respiratory tract infections (LRTI) among patients receiving vedolizumab as compared with placebo. Pooled rates were reported as Odds Ratios (OR) with 95% Confidence Interval (CI). Eight RCT involving 3,287 patients (1873 CD and 1415 UC) were analyzed; 2,493 patients received vedolizumab and 794 received placebo. The rates of RTI and URTI were statistically higher in vedolizumab-treated patients compared to placebo [OR = 1.63; 95% CI (1.07–2.49); OR = 1.64 95% CI (1.07–2.53) respectively]. UC patients, but not CD patients, receiving vedolizumab had a higher risk to develop RTI and URTI [OR = 1.98; 95% CI (1.41–2.77); OR = 2.02; 95% CI (1.42–2.87)] compared to placebo-treated patients. The number of LRTI was small in both treatment groups. Data confirm the good safety profile of vedolizumab even though RTI were more frequent in patients receiving vedolizumab and the risk of URTIs was significantly higher in patients with UC.

Evidence-based clinical practice guidelines for inflammatory bowel disease 2020

Inflammatory bowel disease (IBD) is a general term for chronic or remitting/relapsing inflammatory diseases of the intestinal tract and generally refers to ulcerative colitis (UC) and Crohn's disease (CD). Since 1950, the number of patients with IBD in Japan has been increasing. The etiology of IBD remains unclear; however, recent research data indicate that the pathophysiology of IBD involves abnormalities in disease susceptibility genes, environmental factors and intestinal bacteria. The elucidation of the mechanism of IBD has facilitated therapeutic development. UC and CD display heterogeneity in inflammatory and symptomatic burden between patients and within individuals over time. Optimal management depends on the understanding and tailoring of evidence-based interventions by physicians. In 2020, seventeen IBD experts of the Japanese Society of Gastroenterology revised the previous guidelines for IBD management published in 2016. This English version was produced and modified based on the existing updated guidelines in Japanese. The Clinical Questions (CQs) of the previous guidelines were completely revised and categorized as follows: Background Questions (BQs), CQs, and Future Research Questions (FRQs). The guideline was composed of a total of 69 questions: 39 BQs, 15 CQs, and 15 FRQs. The overall quality of the evidence for each CQ was determined by assessing it with reference to the Grading of Recommendations Assessment, Development and Evaluation approach, and the strength of the recommendation was determined by the Delphi consensus process. Comprehensive up-to-date guidance for on-site physicians is provided regarding indications for proceeding with the diagnosis and treatment.

Efficacy and safety of vedolizumab in Crohn's disease in patients from Asian countries in the GEMINI 2 study

BACKGROUND/AIMS

The efficacy and safety of vedolizumab in moderate-to-severely active Crohn's disease (CD) were demonstrated in the GEMINI 2 study (NCT00783692). This post-hoc exploratory analysis aimed to assess the efficacy and safety of vedolizumab in the subgroup of patients from Asian countries.

METHODS

During the induction phase (doses at day 1, 15), clinical remission, enhanced clinical response, and change in C-reactive protein at 6 weeks; during the maintenance phase, clinical remission, enhanced clinical response, glucocorticoid-free remission and durable clinical remission at 52 weeks, were the efficacy outcomes of interest. Efficacy and safety of vedolizumab compared to placebo were assessed in Asian countries (Hong Kong, India, Malaysia, Singapore, South Korea, and Taiwan) using descriptive analyses.

RESULTS

During the induction phase, in Asian countries (n = 51), 14.7% of the vedolizumab-treated patients achieved clinical remission at week 6 compared to none with placebo (difference, 14.7%; 95% confidence interval, 15.8%-43.5%). In non-Asian countries (n = 317), the remission rate at week 6 with vedolizumab was 14.5%. During maintenance, in Asian countries, clinical remission rates at 52 weeks with vedolizumab administered every 4 weeks, vedolizumab administered every 8 weeks and placebo were 41.7%, 36.4%, and 0%, respectively; while enhanced clinical response rates were 41.7%, 63.6%, and 42.9%, respectively. During induction, 39.7% of patients with vedolizumab experienced an adverse event compared to 58.8% of patients with placebo, and vedolizumab was generally well-tolerated.

CONCLUSIONS

This post-hoc analysis demonstrates the treatment effect and safety of vedolizumab in moderateto-severely active CD in patients from Asian countries.

Efficacy and safety of ustekinumab in East Asian patients with moderately to severely active ulcerative colitis: a subpopulation analysis of global phase 3 induction and maintenance studies (UNIFI)

Background/Aims

We aimed to evaluate the efficacy and safety of ustekinumab (UST) in the East-Asian population with moderate to severely active ulcerative colitis (UC).

Methods

This sub-analysis was conducted on data from East-Asian patients included in the UNIFI program (NCT02407236). UNIFI consisted of two double-blind, placebo-controlled trials: an 8-week induction study and a 44-week randomized withdrawal maintenance study.

Results

Of 133 East-Asian patients (Japanese: 107, Korean: 26) who underwent randomization, 131 completed induction study and 111 entered maintenance study. In the maintenance study, 78 patients were randomized. Patients who received UST 130 mg and UST 6 mg/kg showed numerically higher clinical remission at week 8 in the induction study (5/44 [11.4%] and 5/45 [11.1%], respectively) compared with those who received placebo (0/44, 0%). The proportion of patients achieved clinical remission at week 44 was numerically higher in the UST 90 mg q12w group (10/21, 47.6%), but similar in the UST 90 mg q8w group (5/26, 19.2%) compared to placebo (7/31, 22.6%). Serious adverse events were reported in 1 patient in UST 130 mg group, but no patient in UST 6 mg/kg group through week 8 in the induction study, and 1 patient in UST 90 mg q12w group and 5 patients in the UST 90 mg q8w group in the maintenance study. No deaths were reported in East-Asian patients throughout the study.

Conclusions

UST induction and maintenance treatments were effective in East-Asian patients with moderate to severe UC; the efficacy and safety profiles were consistent with the overall population.

Refractory Ulcerative Colitis Improved by Scheduled Combination Therapy of Vedolizumab and Granulocyte and Monocyte Adsorptive Apheresis

Granulocyte and monocyte adsorptive apheresis (GMA) is occasionally introduced as an alternative combination therapy after loss of response to biologics in ulcerative colitis (UC) patients. However, there have been no reports of the concomitant use of vedolizumab (VDZ) and GMA for the initial induction of UC. A 20-year-old man with refractory UC was admitted for recrudescence. VDZ monotherapy had previously been introduced but was ineffective. Therefore, he received scheduled combination of VDZ and GMA and achieved clinical remission. The combination of two different approaches to inhibit the migration of leukocytes into the inflamed tissue led to satisfactory clinical outcomes.

A pediatric case of moderate active ulcerative colitis successfully treated with vedolizumab in Japan

Corticosteroids and biologics are used to treat moderate-to-severe active pediatric ulcerative colitis (UC); however, it is often difficult to continue administration because of systemic side reactions. Vedolizumab is considered to have few adverse effects due to its mechanism of action and it is expected to be used in children, but the long-term administration of vedolizumab to Japanese pediatric patients with UC has not been reported. We report a case of pediatric moderate active UC with anti-tumor necrosis factor-failure that was successfully treated with vedolizumab in Japan.

Efficacy and safety of vedolizumab in ulcerative colitis in patients from Asian countries in the GEMINI 1 study

BACKGROUND/AIMS

The efficacy and safety of vedolizumab in moderate to severely active ulcerative colitis (UC) have been demonstrated in the GEMINI 1 study (NCT00783718). This post-hoc exploratory analysis sought to establish the efficacy and safety of vedolizumab in a subgroup of patients from Asian countries with UC from GEMINI 1.

METHODS

Efficacy outcomes of interest were clinical response, clinical remission and mucosal healing at week 6 (induction phase); and clinical remission, durable clinical response, durable clinical remission, mucosal healing and glucocorticoid-free remission at week 52 (maintenance phase). Differences in outcome rates between vedolizumab and placebo in Asian countries (Hong Kong, India, Malaysia, Singapore, South Korea, and Taiwan) were assessed using descriptive analyses, and efficacy and safety compared between Asian and non-Asian countries.

RESULTS

During induction, in Asian countries (n = 58), clinical response rates at week 6 with vedolizumab and placebo were 55.2% and 24.1%, respectively (difference 31.0%; 95% confidence interval: 7.2%-54.9%). In non-Asian countries (n = 316), response rates at week 6 with vedolizumab and placebo were 45.9% and 25.8%, respectively. During maintenance, in Asian countries, clinical remission rates at 52 weeks with vedolizumab administered every 8 weeks, vedolizumab administered every 4 weeks and placebo were 9.1%, 36.8%, and 31.6%, respectively; corresponding rates for mucosal healing were 45.5%, 47.4%, and 47.4%, respectively. Vedolizumab was well-tolerated; adverse event frequency was comparable in Asian and non-Asian countries.

CONCLUSIONS

In patients from Asian countries, the efficacy and safety of vedolizumab in treatment of UC were broadly consistent with that in the overall study population.

First- and Second-Line Pharmacotherapies for Patients With Moderate to Severely Active Ulcerative Colitis: An Updated Network Meta-Analysis

BACKGROUND & AIMS

We compared the efficacy and safety of different first-line (biologic-naïve) and second-line (prior exposure to tumor necrosis factor [TNF] antagonists) agents for treatment of moderate to severely active ulcerative colitis in a systematic review and network meta-analysis.

METHODS

We searched publication databases through September 30, 2019, for randomized trials of adults with moderate to severe ulcerative colitis treated with TNF antagonists, vedolizumab, tofacitinib, or ustekinumab, as first-line or second-line agents, compared with placebo or another active agent. Efficacy outcomes were induction and maintenance of remission and endoscopic improvement; safety outcomes were serious adverse events and infections. We performed a fixed-effects network meta-analysis using the frequentist approach, and calculated odds ratios (ORs) and 95% CI values. Agents were ranked using surface under the cumulative ranking (SUCRA) probabilities. Overall quality of evidence was rated using GRADE (Grading of Recommendations, Assessment, Development and Evaluation).

RESULTS

In biologic-naïve patients, infliximab was ranked highest for induction of clinical remission (OR vs placebo, 4.07; 95% CI, 2.67-6.21; SUCRA, 0.95) and endoscopic improvement (SUCRA, 0.95) (moderate confidence in estimates [CE]). In patients with prior exposure to TNF antagonists, ustekinumab (SUCRA, 0.87) and tofacitinib (SUCRA, 0.87) were ranked highest for induction of clinical remission and were superior to vedolizumab (ustekinumab vs vedolizumab: OR, 5.99; 95% CI, 1.13-31.76 and tofacitinib vs vedolizumab: OR, 6.18; 95% CI, 1.003-8.00; moderate CE) and adalimumab (ustekinumab vs adalimumab: OR, 10.71; 95% CI, 2.01-57.20 and tofacitinib vs adalimumab: OR, 11.05; 95% CI, 1.79-68.41; moderate CE). Vedolizumab had the lowest risk of infections (SUCRA, 0.81), followed by ustekinumab (SUCRA, 0.63) in maintenance trials.

CONCLUSIONS

In a systematic review and network meta-analysis, we found infliximab to be ranked highest in biologic-naïve patients, and ustekinumab and tofacitinib were ranked highest in patients with prior exposure to TNF antagonists, for induction of remission and endoscopic improvement in patients with moderate to severe ulcerative colitis. More trials of direct comparisons are needed to inform clinical decision making with greater confidence.

Efficacy and safety of a new vedolizumab subcutaneous formulation in Japanese patients with moderately to severely active ulcerative colitis

Background/Aims

A subgroup analysis was conducted in Japanese patients with moderate to severe ulcerative colitis (UC) enrolled in the phase 3 VISIBLE 1 study, which evaluated the safety and efficacy of a new vedolizumab subcutaneous (SC) formulation.

Methods

Eligible patients received open-label infusions of vedolizumab 300 mg intravenous (IV) at weeks 0 and 2 in the induction phase. Patients with clinical response by complete Mayo score at week 6 entered the double-blind maintenance phase and were randomized to vedolizumab 108 mg SC every 2 weeks, placebo, or vedolizumab 300 mg IV every 8 weeks. The primary endpoint was clinical remission (complete Mayo score ≤ 2 points; no individual subscore > 1 point) at week 52.

Results

Of 49 patients who entered the induction phase, 22 out of 49 patients (45%) had clinical response at week 6 and were randomized to vedolizumab 108 mg SC (n = 10), placebo (n = 10), or vedolizumab 300 mg IV (n = 2). At week 52, 4 out of 10 patients (40%) who received vedolizumab SC had clinical remission versus 2 out of 10 patients (20%) who received placebo (difference: 20% [95% confidence interval, –27.9 to 61.8]). Two patients (2/10, 20%) who received vedolizumab SC experienced an injection-site reaction versus none who received placebo.

Conclusions

Our results indicate that the efficacy of vedolizumab SC in a subgroup of Japanese patients with UC are similar with those in the overall VISIBLE 1 study population, and with those established with vedolizumab IV. The safety and tolerability of vedolizumab SC were generally similar to that established for vedolizumab IV. (ClinicalTrials.gov ID NCT02611830; EudraCT 2015-000480-14)

Population pharmacokinetics of vedolizumab in Asian and non-Asian patients with ulcerative colitis and Crohn's disease

Background/Aims

Vedolizumab is indicated for moderately-to-severely active ulcerative colitis (UC) and Crohn’s disease (CD). Because multiple factors may result in different pharmacokinetics and clinical efficacies, understanding determinants of vedolizumab clearance may enhance dose and treatment strategies. The aim was to characterize vedolizumab pharmacokinetics in Asian and non-Asian UC and CD patients.

Methods

Population pharmacokinetic analysis for repeated measures, using data from 5 studies, was conducted using nonlinear mixed-effects modeling. A Bayesian estimation approach in NONMEM 7.3 was utilized to leverage the predominantly sparse data available for this analysis with results from a prior population pharmacokinetic analysis of vedolizumab.

Results

Vedolizumab pharmacokinetics were described by a 2-compartment model with parallel linear and nonlinear elimination. Using reference covariate values, linear elimination half life of vedolizumab was 24.7 days for anti-vedolizumab antibody (AVA)-negative patients and 18.1 days for AVA-positive patients; linear clearance (CL_L) was 0.165 L/day for AVA-negative patients and 0.246 L/day for AVA-positive patients; central (V_c) and peripheral compartment volumes of distribution were 3.16 L and 1.84 L, respectively. Interindividual variabilities (percent coefficient of variation) were 30.8% for CL_L and 19% for V_c; interoccasion variability on CL_L was 20.3%; residual variance was 17.8%. For albumin, body weight and AVA, only extreme values were identified as potentially clinically important predictors of CL_L. The effect of race (Asian/non-Asian) and diagnosis (UC/CD) on CL_L was negligible and likely not of clinical importance.

Conclusions

Pharmacokinetic parameters were similar in Asian and non-Asian patients with moderately-to-severely active UC and CD. This analysis supports use of vedolizumab flat-fixed dosing in these patients. (Clinicaltrials.gov Identifiers: NCT00783718 (GEMINI 1); NCT00783692 (GEMINI 2). CCT 101; NCT02039505 and CCT-001; NCT02038920)