Well, it’s my understanding that the genes they are looking for in the blood screens can be general to cancers (meaning that many cancer types share this gene being expressed) and also genes that can be specific to certain cancer types. Having these could inform early treatment as gene expression levels are usually what they base treatment on (as well as type). So while they may not be able to see it to just straight up cut it out, they could always try to just kill it with drugs before it becomes worse. The sooner you catch it, the higher the suitability of just about every type of cancer out there.
As a fellow hobbyist, your tank was beautiful, dude. I know how much time and effort goes into the establishment of the nitrogen cycle. I know how much love and care go into a properly cycled saltwater rig. This is easily the most enraging video I’ve seen on this sub because I’m sitting here looking at my three aquariums and I know I would be assaulting the person who destroyed my systems… I feel for you bro… I have a fair amount of spare gear I’d be happy to part with or if you have a go fund me, I’d like to help. Take care, man.