Kiniksa Pharmaceuticals (KNSA) Announces Corporate Update and Financial Performance
On January 12, 2026, Kiniksa Pharmaceuticals International, plc (Nasdaq: KNSA) provided a comprehensive corporate update, reporting impressive financial data for the year 2025. The biopharmaceutical company, which focuses on developing therapies for unmet medical needs, particularly in cardiovascular indications, announced that its net product revenue from ARCALYST® (rilonacept) reached $677.5 million—an approximate 62% increase year-over-year.
Strong Revenue Growth and Future Projections for ARCALYST
Kiniksa’s ARCALYST generated revenue of $677.5 million for the full year 2025, compared to $417.0 million in 2024. This remarkable growth underscores the drug's establishment as a second-line treatment for recurrent pericarditis. For the year ahead, the company anticipates ARCALYST net product revenue to range between $900 million and $920 million.
- 2025 net product revenue: $677.5 million
- 2026 forecasted revenue: $900 - $920 million
- Year-over-year growth: 62%
KPL-387 and KPL-1161 Clinical Developments
In addition to ARCALYST's financial success, Kiniksa is advancing its drug pipeline. The company is currently conducting a Phase 2/3 clinical trial for KPL-387, another potential treatment for recurrent pericarditis. Results from the dose-focusing portion of the trial are anticipated in the second half of 2026. KPL-1161, an Fc-modified monoclonal antibody, is set to enter a Phase 1 trial by the end of this year.
"IL-1α & IL-1β inhibition with ARCALYST is becoming the preferred treatment for patients with recurrent pericarditis," stated Sanj K. Patel, Chairman and CEO of Kiniksa. "Our current financial position allows us to pursue both KPL-387 and KPL-1161, expanding our presence in the IL-1 inhibition market."
Financial Outlook and Stability
Kiniksa reported a significant boost in its cash reserves, ending 2025 with $414.1 million in cash, cash equivalents, and short-term investments, reflecting an increase of $170.4 million from the previous year. Notably, the company reported no outstanding debt and expects to maintain cash flow positivity annually.
Upcoming Presentation at J.P. Morgan Healthcare Conference
Kiniksa will present its corporate updates at the 44th Annual J.P. Morgan Healthcare Conference on January 12, 2026, at 2:15 PM Pacific Time. The presentation will feature insights from CEO Sanj K. Patel and Chief Corporate and Commercial Officer Ross Moat, and will be available for live streaming on the company's website.
About Kiniksa Pharmaceuticals (KNSA)
Kiniksa Pharmaceuticals is a biopharmaceutical company dedicated to developing innovative therapies for patients with unmet needs, focusing particularly on cardiovascular conditions. The company aims to enhance treatment options and improve the quality of life for patients through its proprietary drug portfolio.
About ARCALYST
ARCALYST is a subcutaneously injected, recombinant dimeric fusion protein approved by the FDA for treating recurrent pericarditis and other inflammatory conditions. The drug works by blocking the action of interleukin-1 alpha and beta, providing critical relief for patients. The FDA has granted Orphan Drug Exclusivity to ARCALYST, acknowledging its significance in treating these rare diseases.