Medfags! Autoimmune disease is caused by the body producing autoantibodies right? Now, gene therapy that can fix whatever is wrong with the body so that it stops producing these autoantibodies would be ideal but that's probably not going to happen for at least a couple hundred years. So absent a cure, why can't we look at the site of autoimmune disease (motor neurons in MS for example), find the autoantibodies and somehow remove them from the body? Surely this is better than suppressing the immune system or tinkering with it, as it wouldn't increase the risk of cancer or infection.
Why wouldn't this work? Is it a matter of not having the technology to be able to precisely remove a single type of molecule from the body, or it something more complicated?