Cost-Effectiveness Analysis of Increased Adalimumab Dose Intervals in Crohn's Disease Patients in Stable Remission: The Randomized Controlled LADI Trial

  • Fenna M. Jansen
  • , Reinier C.A. Van Linschoten
  • , Wietske Kievit
  • , Lisa J.T. Smits
  • , Renske W.M. Pauwels
  • , Dirk J. De Jong
  • , Annemarie C. De Vries
  • , Paul J. Boekema
  • , Rachel L. West
  • , Alexander G.L. Bodelier
  • , Ingrid A.M. Gisbertz
  • , Frank H.J. Wolfhagen
  • , Tessa E.H. Römkens
  • , Maurice W.M.D. Lutgens
  • , Adriaan A. Van Bodegraven
  • , Bas Oldenburg
  • , Marieke J. Pierik
  • , Maurice G.V.M. Russel
  • , Nanne K. De Boer
  • , Rosalie C. Mallant-Hent
  • Pieter C.J. Ter Borg, Andrea E. Van Der Meulen-De Jong, Jeroen M. Jansen, Sita V. Jansen, Adrianus C.I.T.L. Tan, Frank Hoentjen, C. Janneke Van Der Woude*, Desirée Van Noord, Jildou Hoekstra, Johannes T. Kamphuis, Moniek H.P. Gorter, Aura A.J. Van Esch
*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)
17 Downloads (Pure)

Abstract

Background and Aims: 

We aimed to assess cost-effectiveness of increasing adalimumab dose intervals compared to the conventional dosing interval in patients with Crohn's disease [CD] in stable clinical and biochemical remission. 

Design: 

We conducted a pragmatic, open-label, randomized controlled non-inferiority trial, comparing increased adalimumab intervals with the 2-weekly interval in adult CD patients in clinical remission. Quality of life was measured with the EQ-5D-5L. Costs were measured from a societal perspective. Results are shown as differences and incremental net monetary benefit [iNMB] at relevant willingness to accept [WTA] levels. 

Results: 

We randomized 174 patients to the intervention [n=113] and control [n=61] groups. No difference was found in utility (difference: -0.017, 95% confidence interval [-0.044; 0.004]) and total costs (-€943, [-€2226; €1367]) over the 48-week study period between the two groups. Medication costs per patient were lower (-€2545, [-€2780; -€2192]) in the intervention group, but non-medication healthcare (+€474, [+€149; +€952]) and patient costs (+€365 [+€92; €1058]) were higher. Cost-utility analysis showed that the iNMB was €594 [-€2099; €2050], €69 [-€2908; €1965] and -€455 [-€4,096; €1984] at WTA levels of €20 000, €50 000 and €80 000, respectively. Increasing adalimumab dose intervals was more likely to be cost-effective at WTA levels below €53 960 per quality-adjusted life year. Above €53 960 continuing the conventional dose interval was more likely to be cost-effective. 

Conclusion: 

When the loss of a quality-adjusted life year is valued at less than €53 960, increasing the adalimumab dose interval is a cost-effective strategy in CD patients in stable clinical and biochemical remission. 

Clinical Trial Registration Number: 

ClinicalTrials.gov, number NCT03172377.

Original languageEnglish
Pages (from-to)1771-1780
Number of pages10
JournalJournal of Crohn's and Colitis
Volume17
Issue number11
DOIs
Publication statusPublished - Nov 2023

Bibliographical note

Publisher Copyright:
© 2023 The Author(s). Published by Oxford University Press on behalf of European Crohn's and Colitis Organisation.

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