Overview
- Koller announced the news in a September 30 video on Sick Of It All’s social accounts, noting a visible weight loss.
- He said trouble gaining weight and keeping food down prompted scans that confirmed the cancer’s return, and he plans to take treatment day by day.
- Koller had declared himself cancer-free in May 2025 after chemotherapy that concluded in February.
- Sick Of It All remains off the road with no shows announced as Koller resumes care.
- Fans and fellow musicians have rallied again, building on a GoFundMe that surpassed $300,000 and a 2024 Irving Plaza benefit.