The meaning of the following Sentence --- "Learning disabilities are immutable irrespective of time and nature of interventions"?

Can anyone please explain to me the meaning of the following sentence?

Learning disabilities are immutable irrespective of time and nature of interventions.

I am also not sure whether the structure of the sentence is correct.

Thank you in advance.

"immutable" = "cannot be changed"

"interventions" = various therapies, drugs, tutoring, etc.

"irrespective" = (in this case) "regardless" or "despite"

So:

It doesn't matter what treatments are tried (or when), someone with a learning disability will always have that learning disability.

Note that this doesn't mean interventions are pointless. Most learning disabilities are of the form "it is much more difficult to learn something", and not of the form "it is impossible to learn something". Teaching someone to learn to read and write may take longer, but is still worthwhile.