N01 Type of patient education impacts the willingness to switch from an IV to SC of a biological in patients with Inflammatory Bowel Disease: a multicentre, comparative study.

De Dycker, E.(1);Hoefkens, E.(2);Asnong, K.(2);Geens, P.(1);Lembrechts, N.(2);Lambrechts, T.(1);Van de Schoot, I.(2);Paps, A.(2);Vermeire, S.(1);Pouillon, L.(2);Ferrante, M.(1);Bossuyt, P.(2);

(1)University Hospitals Leuven- KU Leuven, Department of Gastroenterology and Hepatology, Leuven, Belgium;(2)Imelda General Hospital Bonheiden, Department of Gastroenterology, Bonheiden, Belgium;


Subcutaneous (SC) formulations of CT-P13 and vedolizumab (VED) are currently available as new treatment option for patients with inflammatory bowel disease (IBD). The decision to switch requires a shared decision making based on adequate education of the patient, to avoid negative outcomes due to a nocebo effect. The aims of this study were (1) to evaluate the percentage of patients with IBD in favour of switching to SC formulations and (2) to compare two educational strategies.


This was a multicentre study in patients with IBD on maintenance intravenous (IV) CT-P13 or VED. Patients attending the infusion unit were invited to complete a survey exploring the willingness to switch to SC formulations. In centre A, all patients were informed on the new SC formulations and the accompanying care pathway by an information leaflet and a face-to-face interaction with the IBD nurse, prior to completing the survey. In centre B, patients on a minimal interval of q8w were digital invited to the same survey via the e-health application of the hospital. Demographics, patient reported outcomes, willingness to switch and reasons for IV vs. SC preferences were captured.


In total, 447 (n=183 Centre A; n=264 Centre B; participation ratio 83.6%) patients completed the survey (m/f: 212/235; CD/UC/IBD-U: 275/161/11; median age 45 IQR 33-57; remission CD/UC: 75%/82%) see table. Most patients were open to SC treatment (47% yes, 33% doubt, 20% no). The main driver to switch was an anticipated decrease in hospital visits (86%) and overall time gain (78%). The main reason to continue IV was fear of change (60%) and uncertainty in case of relapse after switch to a SC formulation (46%). In univariate analysis, the self-estimated compliance rate was associated with the willingness to switch (p<0.0001). To evaluate the impact of the approach in patient education between the two centres, we compared the subgroup of patients on ≥q8w interval with a dosing of 5-10mg/kg CT-P13 or 300 mg VED (n=335). The willingness to switch was higher after a face-to-face approach (centre A) compared to a merely digital approach (centre B;  53.9 % vs. 40.9 % p=0.038), although patients in centre B had a higher educational level (p=0.003), more prior experience with other IBD SC medication (p=<0.001), lived further from the hospital (p<0.001) and had a younger age at diagnosis (p=0.019).


In this multicentre comparative study exploring the willingness to switch from IV to SC maintenance therapy with CT-P13 and VED, the majority is open to switch to a SC formulation. The direct approach and education of the patient by the IBD nurse impacts significantly the willingness to switch. In a follow-up we will investigate the actual switch rates.

table demographics