okay...yeah...blood donations. i was wondering if it was the sort of thing where its best to get the donation from a sibling, or otherwise "match" the donor? i realize its not "whole" blood, but Ig is the antibody part, right? therefor there might be a concern about autoimmune response in a poor match? i don't know.
i don't get the part about IV-Ig suppressing the immune system? I thought Ig = antibodies, therefor strengthen the immune system? Maybe since they're introducing foreign Ig they also administer some drug in conjunction which suppresses the immune system?
when you said "but his GM1 didn't support it" i was thinking "GM1" referred to a person, but now I see "GM1" is a component of blood plasma, or a blood test, right? i guess the blood test is really a count of anti-GM1 antibodies. i gather that its when this test comes back outside normal that they consider IV-Ig treatment? Kudos to your husband for pushing for the IV-Ig treatment even without the abnormal GM1 test! it seems increasingly evident that, as one doctor put it, you won't get the kind of aggressive treatment a doctor would order for a member of there own family unless you research and push.
it seems to me that in general medical science is sort of reverse-engineering--we start with symptoms and work "backwards" for years, centuries, or longer to the cause(s). (maybe thats the difference between "science" and "engineering"?) so, we put a name on the symptoms, and later discover that there are truly several "diseases" that fall under that name. diabetes seems like a good example: the first noted symptom was high sugar in the urine. eventually it was discovered that the severe "type I", or "child-onset", diabetes is an autoimmune problem wherein the immune system destroys the pancreas, while "type II", or adult-onset, patients have a healthy pancreas, but some unknown something prevents the normal insulin effect from occurring--either cause results in the same symptoms. Hence, two diseases with one name.
ALS seems to be at LEAST two diseases--we can already distinguish "familial" vs "sporadic", and i bet it wont be long before sporadic als gets subdivided into multiple causes, and possibly distinct treatments. but for now "untreatable" seems to be a big part of the definition of the disease. So if IV-Ig, or any other treatment, improves a patient's situation, we conclude they must not have had "real ALS" to begin with. Here's to hoping it turns out that NOBODY has "the real" McCoy! :-D