SNPEFF Sequence Ontology Terms that are equivalent to a Loss of Function

Question

[sviatoslav.kendall]

I'm writing a script that will identify loss of function mutations in a SNPEFF-annotated MAF file containing point mutations, indels or, in some cases, both.

So far, I've been doing this is by typing up a list of every Sequence Ontology value that indicates a loss of function:

stop_gained start_lost etc

But I suspect this has already been done and wonder if someone can point me if the right direction of finding such a list.