impact factor

Rapid paper


Efficacy and safety of switching Jak inhibitors in rheumatoid arthritis: an observational study

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11


  1. Instituto de Investigación Hospital 12 de Octubre, Madrid, Spain.
  2. Hospital Universitario de Canarias, La Laguna, Spain.
  3. Hospital Universitario de la Princesa, Madrid, Spain.
  4. Hospital Universitario de Móstoles, Madrid, Spain.
  5. Hospital Universitario Gregorio Marañón, Madrid, Spain.
  6. Hospital General Rio Carrión, Palencia, Spain.
  7. Hospital de Sierrallana, Torrelavega, Spain.
  8. Hospital de Sagunto, Valencia, Spain.
  9. Complejo Asistencial Universitario de Leon, Spain.
  10. Hospital Marques de Valdecilla, Santander, Spain.
  11. Instituto de Investigación Hospital 12 de Octubre, Madrid, and Universidad Complutense de Madrid, Spain.

2021 Vol.39, N°3
PI 0453, PF 0455
Rapid paper

purchase article

PMID: 33938793 [PubMed]

Received: 15/02/2021
Accepted : 16/04/2021
In Press: 27/04/2021
Published: 21/05/2021


Different Jak inhibitors (jakinibs) have shown efficacy in rheumatoid arthritis (RA), but in a significant proportion of patients, an insufficient response leads to therapy withdrawal. We describe the efficacy and safety of a second jakinib in patients stopping the first due to insufficient response or side effects.
This is an observational retrospective multicentric study of 31 patients with RA sequentially treated with baricitinib or tofacitinib in any order in clinical practice in ten medical centres in Spain.
We identified 31 patients, sequentially treated with both jakinibs. An equal proportion had received tofacitinib or baricitinib first. Most patients (87%) had previously received one or several bDMARD, median 4 (2–5). Median survival for the first jakinib was 5 (3–8) months, and the reasons for withdrawal were inefficacy in 61% and adverse effects in 39%. Most patients (23/31, 74%) maintained the response to the second jakinib after a mean follow-up of 19.5 (12–24) months. In all 8 patients who discontinued the second jakinib, the reason was inefficacy. The treatment suspension rate was similar among patients that had discontinued the first jakinib for inefficacy (26%) or for adverse effects (25%).
Therapy of RA with a second jakinib seems a safe and efficacious option after discontinuation of the first, either for inefficacy or for side effects.

Rheumatology Article