Why reducing the risk of recurrence matters for patients

Up to
of individuals with acute pericarditis will experience a recurrent episode within 18 months.1,2

Recurrent pericarditis is diagnosed when an index acute episode is followed by a symptom-free period of at least 4 to 6 weeks and then followed by a subsequent episode.1

A retrospective study of 944 patients with recurrent pericarditis from January 2007 to March 2017 found that the median duration of disease was approximately 6 months for those with 1 recurrence and approximately
3 years for those with ≥2 recurrences.3

All pericarditis
Patients with
2+ recurrences

*Nearly 50% turnover in this population annually with ~7000 patients coming in and out of the pool each year.2


Recurrent pericarditis is driven by an interleukin-1 alpha (IL-1α) and interleukin-1 beta (IL-1β)-mediated autoinflammatory response.4

IL-1α and IL-1β are key cytokines that mediate the pathophysiology of many inflammatory processes and have been implicated as a causative factor in recurrent pericarditis.4


  • Recurrent pericarditis results from IL-1α– and IL-1β–mediated inflammation of the pericardial sac
  • IL-1α and IL-1β bind to the universally expressed cell surface receptor, IL-1 receptor type-1, triggering a cascade of inflammatory mediators and autoinflammation
  • Preformed IL-1α is released by damaged/inflamed pericardial cells; it may contribute to the maintenance and amplification of inflammation via activation of the NLR family pyrin domain-containing 3 (NLRP3) inflammasome, which then augments the inflammatory response by production of IL-1β in a cascade amplification system

Patients continue to experience recurrences despite treatment with commonly prescribed therapies.4

NSAIDs, colchicine, and corticosteroids do not target specifically the IL-1–mediated cycle of autoinflammation.4,5

The first and only FDA-approved treatment for recurrent pericarditis, ARCALYST offers your patients a new treatment option. 

It is an IL-1 inhibitor that targets the underlying mechanism that drives inflammation. It can be used for the treatment of recurrent pericarditis and reduction in the risk of subsequent pericarditis episodes.6