If by "or is non-human life a consideration as well." is in reference to your previous statement, " A tumor is human life as well, but so what?", my argument is that, unlike a fetus, a cancer is not a newly developing human and is rather a mutation of your own cells, destined to kill you rather then become a fully-fledged self-sufficient person. But even then, at the very least, harming a tumor is an act of self-defense against your own rogue cells.
if by adding "non-human life" you refer to plants, animals, fungi, or other organisms, I would say it depends. Usually, I don't consider a single cell, unlikely to have any form of awareness, to be worth defending unless it's vanishing would upset a larger ecosystem and risk harming creatures that are far more likely to have a degree of awareness.
But I wouldn't *always* defend such "aware" creatures- If I were to, say, go vegan, A predator would still mercilessly rip apart a pig or cow with or without any sense of morals I try to instill within it. When thinking carefully about the question, my stance is that I value human life over all, with a downwards slope from there until we reach simple or non-aware organisms, with all other organisms falling somewhere along said slope.