scholarly journals P736 Point-of-care infliximab quantification in inflammatory bowel disease in daily practice

2018 ◽  
Vol 12 (supplement_1) ◽  
pp. S484-S484
Author(s):  
M P Costa Santos ◽  
C Palmela ◽  
C Gouveia ◽  
C Fidalgo ◽  
L Glória ◽  
...  
2018 ◽  
Vol 11 ◽  
pp. 1756283X1774473 ◽  
Author(s):  
Yannick Derwa ◽  
Christopher J.M. Williams ◽  
Ruchit Sood ◽  
Saqib Mumtaz ◽  
M. Hassan Bholah ◽  
...  

Objectives: Patient-reported symptoms correlate poorly with mucosal inflammation. Clinical decision-making may, therefore, not be based on objective evidence of disease activity. We conducted a study to determine factors associated with clinical decision-making in a secondary care inflammatory bowel disease (IBD) population, using a cross-sectional design. Methods: Decisions to request investigations or escalate medical therapy were recorded from outpatient clinic encounters in a cohort of 276 patients with ulcerative colitis (UC) or Crohn’s disease (CD). Disease activity was assessed using clinical indices, self-reported flare and faecal calprotectin ≥ 250 µg/g. Demographic, disease-related and psychological factors were assessed using validated questionnaires. Logistic regression was performed to determine the association between clinical decision-making and symptoms, mucosal inflammation and psychological comorbidity. Results: Self-reported flare was associated with requesting investigations in CD [odds ratio (OR) 5.57; 95% confidence interval (CI) 1.84–17.0] and UC (OR 10.8; 95% CI 1.8–64.3), but mucosal inflammation was not (OR 1.62; 95% CI 0.49–5.39; and OR 0.21; 95% CI 0.21–1.05, respectively). Self-reported flare (OR 7.96; 95% CI 1.84–34.4), but not mucosal inflammation (OR 1.67; 95% CI 0.46–6.13) in CD, and clinical disease activity (OR 10.36; 95% CI 2.47–43.5) and mucosal inflammation (OR 4.26; 95% CI 1.28–14.2) in UC were associated with escalation of medical therapy. Almost 60% of patients referred for investigation had no evidence of mucosal inflammation. Conclusions: Apart from escalation of medical therapy in UC, clinical decision-making was not associated with mucosal inflammation in IBD. The use of point-of-care calprotectin testing may aid clinical decision-making, improve resource allocation and reduce costs in IBD.


2021 ◽  
Vol 15 (Supplement_1) ◽  
pp. S325-S325
Author(s):  
D Maniero ◽  
G Lorenzon ◽  
I Marsilio ◽  
A Rigo ◽  
R Cardin ◽  
...  

Abstract Background Infliximab (IFX) is a monoclonal antibody that targets cytokine tumor necrosis factor; it is used for the treatment of patients with active inflammatory bowel disease (IBD), including Crohn’s disease (CD) and ulcerative colitis (UC). IFX induces and maintains remission and mucosal healing in patients with IBD. Measurement of trough levels (TL) of IFX is important to assess if the drug is within its therapeutic concentrationand to explain lack/loss of response. Standard laboratory tests to assess IFX trough levels (enzyme linked immunosorbent assays, ELISA) present some downsides, related to the long turnaround (about 3 hours), and the need of specialized equipment and laboratory personnel. For this reason, point-of care testing (POCT) was developed to provide results within a few minutes from blood collection, leading to a decision-making approach. Aim To determine the degree of analytical correlation between a recently developed POCT (ProciseDx) IFX assay which analyze capillary whole blood and the comparative ELISA from serum. Methods From October 2020 to January 2021, patients (aged≥18 years) taking IFX were recruited at Gastroenterology Unit, Padua University Hospital. In each patient, IFX levels from capillary whole blood collected by finger stick were performed using the ProciseDx IFX assay with reportable range between 1.7-77.2 µg/mL; at the same time, a serum sample from venous blood was collected to carry out Grifols’ Promonitor ELISA test (range 0.035–14.4 µg/mL). A Deming regression test was used to identify the correlation between the two methods. Results Eighty-seven patients were enrolled (63% males; mean age of 44±16), with 52% of them having CD, 45% UC and 3% an undetermined-Inflammatory Bowel Disease. The assessment with ProciseDx POCT was feasible in each patient and only in three cases blood collection from finger prick was repeated. Moreover, from blood collection to results we needed about 3±0.5 minutes, while serum ELISA analysis required the collection of at least 40 samples (around three weeks at our centre) and 3 hours to be performed. 39 patients (59% males; mean age of 44±16) had TL as assessed by ProciseDx IFX assay lower than 1.7 or greater than 14.4 µg/mL, in accordance with ELISA assessment. Among the remaining 48 patients (67% males with mean age of 45±17), The correlation between the two tests was high (the total results showed an R squared of 0.691 (95% CI 0.717-0.902). Conclusion The ProciseDx POCT has good accuracy but was more rapid and easy to be performed in providing the results of Therapeutic Drug Monitoring in outpatients taking IFX. This could lead to a more effective optimization of the biological drug, thus avoiding treatment failure.


2018 ◽  
Vol 12 (supplement_1) ◽  
pp. S233-S234
Author(s):  
S Saraiva ◽  
J Cortez-Pinto ◽  
R Barosa ◽  
J Castela ◽  
I Rosa ◽  
...  

2020 ◽  
Vol 14 (Supplement_1) ◽  
pp. S337-S338
Author(s):  
A Buisson ◽  
M Fumery ◽  
M Serrero ◽  
L Orsat ◽  
S Nancey ◽  
...  

Abstract Background The multiplication of therapeutic options with close efficacy and safety, leads to consider acceptability of treatment regimen as a key point for therapeutic decision in inflammatory bowel disease (IBD). We aimed to compare acceptability of IBD treatment regimen and to identify its associated factors. Methods From a nationwide prospective study conducted in 24 public or private centres, IBD patients were consecutively included for 6 weeks. A dedicated questionnaire was developed, tested and validated for the study. It was administered to each included patient and his/her related physician. Acceptability was graded with an acceptability numerical scale (ANS) from 0 (absolutely not acceptable) to 10 (totally acceptable). Results Overall, 1850 patients were included (65.9% with Crohn’s disease (CD), mean age = 41.0 ± 14.7, 22.2% experiencing IBD flare at inclusion). The medications at inclusion were none in 9.0%, oral (PO) monotherapy in 17.3%, subcutaneous (SC) injections in 29.2% and intra-venous (IV) infusions in 44.5% of the patients. The ANS were 8.68 ± 2.52 for PO, 7.67 ± 2.94 for SC and 6.79 ± 3.31 for IV (p < 0.001 for each comparison). The patients reported PO, SC and IV as their first choice in 65.8%, 21.4% and 12.8%, respectively. The reasons for reduced acceptability were the need to come to the hospital (63.0%) for IV infusion, none for SC injections and the fear to forget to take pills (30.5%), the number of daily dose (28.4%) and daily medication as a reminder of disease every day (24.8%) for PO therapy. In multivariable analyses, the following factors were associated with a better acceptability of IV infusion (current IBD flare: p = 0.003 and current IV therapy for IBD: p < 0.001), SC injections (Private practice: p = 0.006 and current SC injections for IBD: p < 0.001) and PO medication (male gender: p = 0.018, higher studies level: p < 0,001 and current oral medication: p = 0.002). The mean ANS for all IBD treatment regimen were compared in the 1850 patients (Figure 1). No difference was observed between CD and UC. In biologics-naïve patients (n = 315), the treatment regimens were ranked in the following order: PO once daily (8.8 ± 2.2), SC/12 weeks (week) (7.9 ± 3.0), SC/8 week and PO twice daily (7.2 ± 3.2 et 6.9 ± 3.4; ns), SC/4 week (6.2 ± 3.4), SC/2 week et IV/8 week (5.1 ± 3.4 and 5.0 ± 3.5; ns)(p < 0.001 except if ns was mentioned). For the patients, the acceptable loss of efficacy to receive a more convenient medication was 5.2% (non-inferiority trial limit). Conclusion While PO administration was preferred by most of IBD patients, the acceptability of treatment regimen is highly impacted by the interval between two doses and the previous medications. Our data could be helpful to guide therapeutic decision in daily practice in IBD.


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