HHS-OASH-2026-0397-5082
https://www.regulations.gov/comment/HHS-OASH-2026-0397-5082

https://pmc.ncbi.nlm.nih.gov/articles/PMC5595291/

"Brain tumor incidence shows an upward trend in recent years; brain tumors account for 5% of adult tumors, while in children, this figure has increased to 70%."