Cancer treatments often don't help every patient the same, and researchers now have a better idea why. Certain drugs get trapped inside lysosomes inside tumor cells, creating slow-release reservoirs that cause uneven drug distribution across the tumor. This results in some cancer cells receiving heavy exposure while others get very little. The ScienceDaily report does not provide study methodology, sample size, or limitations, and it is unclear if this is based on a peer-reviewed paper or preprint. The insight could eventually lead to better tailored treatments. Source: https://www.sciencedaily.com/releases/2026/03/260326075550.htm