Propensity score-integrated composite likelihood approach for incorporating real-world evidence in single-arm clinical studies

2019 ◽  
Vol 30 (3) ◽  
pp. 495-507 ◽  
Author(s):  
Chenguang Wang ◽  
Nelson Lu ◽  
Wei-Chen Chen ◽  
Heng Li ◽  
Ram Tiwari ◽  
...  
2019 ◽  
Vol 29 (5) ◽  
pp. 731-748 ◽  
Author(s):  
Chenguang Wang ◽  
Heng Li ◽  
Wei-Chen Chen ◽  
Nelson Lu ◽  
Ram Tiwari ◽  
...  

2020 ◽  
Vol 98 ◽  
pp. 106171
Author(s):  
Mark D. Neuman ◽  
Michael D. Kappelman ◽  
Elliot Israel ◽  
Susan S. Ellenberg ◽  
Cindy Girman ◽  
...  

2020 ◽  
Vol 4 (s1) ◽  
pp. 114-114
Author(s):  
Jessica Pham ◽  
Eunjoo Pacifici

OBJECTIVES/GOALS: Real-world studies have been gaining momentum in providing evidence of treatment effectiveness and hold great potential for facilitating the drug regulatory process. The U.S. Food and Drug Administration (FDA) has recognized this by providing a framework for using real-world data (RWD) to generate real-world evidence (RWE). The objective of this study is to assess the current level of RWE implementation in clinical studies. METHODS/STUDY POPULATION: Using keywords relevant to RWE, we reviewed studies on drugs, biologics, and medical devices published on PubMed in 2018. Information regarding the therapeutic area of focus, intervention type, study design, primary outcome, and data source was recorded. Further analyses of the three main therapeutic areas of study (oncology, cardiology, and infectious diseases) were performed to determine how RWE was being utilized. In addition, a broad “real-world” search was performed on Clinicaltrials.gov, from which we extracted relevant observational and Phase I, II, II/III, III, III/IV, and IV studies. A supplemental PubMed search was used to evaluate published studies in order to identify which field these trials were concentrated in and the outcome of interest.” RESULTS/ANTICIPATED RESULTS: After application of “real-world” search terms to PubMed, 995 hits were generated and of these, 311 studies were excluded. More than half of the studies were observational and retrospective in nature (64%) with 70% examining drug/biologic outcomes. RWE data sources were largely dominated by medical records and claims data. The primary uses of RWE across oncology, cardiology, and infectious diseases included supporting drug product effectiveness, assessing safety, and evaluating treatment patterns. Of the 207 RWE studies identified on ClinicalTrials.gov, 66 were cancer randomized controlled trials (RCTs), a majority of which were used for post-marketing safety evaluations. Further research will be conducted to determine the precise role of RWE in all studies (e.g. historical comparator, label expansion). DISCUSSION/SIGNIFICANCE OF IMPACT: By examining the use of RWE in regulatory decision making, we can inform stakeholders of the extent to which robust RWE studies complement evidence generated by RCTs. Thought to reflect a product’s performance in a broader and more diverse population, RWE can provide greater insight to clinical trial conduct and ultimately transform patient outcomes.


2021 ◽  
Vol 15 (Supplement_1) ◽  
pp. S083-S084
Author(s):  
B Bokemeyer ◽  
S Plachta-Danielzik ◽  
R Di Giuseppe ◽  
W Mohl ◽  
N Teich ◽  
...  

Abstract Background Prospective, observational real world studies on the effectiveness and safety of ustekinumab (UST) in Crohn’s disease (CD) are required in addition to RCTs, usually confined to selected patients, which may not represent special treatment patterns and everyday clinical practice. The aim of the present 3-year RUN-CD study was to investigate the induction phase effectiveness of UST vs. other biologics (OB) in CD in terms of clinical and steroid-free remission at week 16. To the best of our knowledge, RUN-CD is currently the largest prospective real world evidence (RWE) study with UST in CD using propensity score adjustment. Methods Between 2017–2020, 901 CD-patients starting a new therapy with UST or OB, were enrolled in 44 IBD-experienced centers across Germany. After exclusion of missing outcomes, the final sample consisted of 657 patients. Clinical remission (HBI ≤ 4), and steroid-free remission (HBI ≤ 4 and no systemic use of steroids or budesonide during the last 8 weeks) were considered as outcomes at week 16. To reduce the effect of confounders, propensity score (PS) adjustment with inverse probability of treatment weighting (IPTW) was implemented. A weighted logistic regression was used, and the results were reported as odds ratio (OR) and 95% confidence interval (CI). Results 339 UST (naïve: 34) and 318 OB CD-patients were included (ADA: 50.3%, IFX: 37.4%, VDZ: 12.3%) (naïve: 203). PS removed systematic differences between both groups (30.8% smokers, 15.1% perianal disease, 36.2% surgical resection, 40.5% EIM). The effectiveness of UST for clinical and steroid-free remission was comparable to that of OB at week 16. Besides, in bio-naïve patients, clinical remission was numerically, though not significantly, higher in UST vs OB (Table 1). Similar results were observed in the bio-experienced UST vs. OB groups [remission: 59.3% vs 55.4%; OR: 1.17 (0.73–1.90)]. For both the remission rates were higher in the bio-naïve than in the bio-experienced groups (p<0.05 for both). Conclusion In this prospective RUN-CD study, with propensity score weighted groups, UST showed similar induction effectiveness in comparison with OB therapies. Remarkably higher remission rates were observed in this RWE study than in prior RCTs. An additional favorable safety profile supports consideration of UST as a first-line targeted therapy for CD.


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