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XBiotech Announces Positive Phase II Final Efficacy Results from Investigator-Sponsored TASKIN Trial in Refractory Metastatic Colorectal Cancer

Globe Newswire•19/10/2026•09:00 ET
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Key Highlights

  • ➤XBiotech (XBIT) vilamakitug arm reached 61.3% 12-month overall survival
  • ➤Control arm recorded 55.7% 12-month overall survival
  • ➤Right-sided tumors showed 62% lower death risk with vilamakitug
  • ➤Right-sided tumors showed 61% lower treatment-strategy failure risk
  • ➤Vilamakitug achieved 96.4% chemotherapy compliance and 1.3% permanent discontinuation

Expert Statements

François Ghiringhelli, Principal Investigator of the TASKIN study and Director of the Oncology Department at Centre Georges-François Leclerc

“Patients with refractory metastatic colorectal cancer face severe therapeutic limitations and poor survival outcomes. Meeting our pre-specified primary milestone provides compelling evidence that targeting IL-1α plays a meaningful role in tumor biology. Most striking is the magnitude of benefit observed in right-sided colorectal cancers, which has been a historically aggressive disease subset with high unmet medical need. The alignment between this pronounced clinical survival advantage and elevated basal IL-1α tumor expression offers a clear biological rationale for this therapy.”

Sushma Shivaswamy, Chief Scientific Officer and Interim Chief Executive Officer of XBiotech

“We are deeply grateful to Professor Ghiringhelli, the team at Centre Georges-François Leclerc, the French National Cancer Institute, and all the participating patients for advancing this important trial. By uncovering a biomarker-anchored patient population in right-sided disease that derives substantial clinical benefit from vilamakitug, TASKIN provides a focused and validated direction as we advance vilamakitug toward registrational clinical development.”

Investigator-sponsored study funded by the French National Cancer Institute (INCa) meets pre-specified primary efficacy success criterion with 61.3% 12-month overall survival.

Exploratory Subgroup analysis reveals significant survival benefit in right-sided tumors.

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