Am I misunderstanding the headline? Is the word "block" now meaning "enhance" instead of "stop"? I would think based on the text of the article that it enhances resistance. Or are tumors necessary to stop cancer growth (even though it is cancer growth?)

> Am I misunderstanding the headline?

Yes, what’s being blocked is “tumor resistance” to treatment.

“potentially overcoming treatment resistance in one of the deadliest cancers.”