Overview

• Malo disclosed the development in an Instagram letter on Sept. 24, saying his health had "taken a turn" and identifying LMD as the new complication.
• Leptomeningeal disease involves cancer cells spreading to the membranes around the brain and spinal cord, and clinical references note it is generally incurable with care focused on slowing spread and preserving quality of life.
• All remaining 2025 concerts are canceled except for two December dates at Nashville’s Ryman Auditorium, with fans asked to hold tickets as the band plans something special for those shows.
• Malo said he begins radiation right away, expects to add chemotherapy, and is exploring other therapies, emphasizing he feels supported and "in no way alone, or scared."
• The Mavericks will continue non-touring projects such as releasing live recordings and merchandise, and coverage indicates a longer touring break is expected into early 2026 to allow for his treatment.