"Autoimmune disease is autoimmune disease whichever way you are affected. So this is supposed to manage the errant immune system - so why wouldn't it apply to all autoimmune disease."

This is a "hot topic" at the moment.

Autologous mesenchymal stem cell transplants have been investigated for treatment of MS and SLE, with encouraging results Cell Death and Disease - Mesenchymal stem cells and immunomodulation: current status and future prospects.

Autologous haematopoietic stem cell transplants are also looking promising for autoimmune diseases like systemic sclerosis, SLE and RA Hematopoietic stem cell transplantation for auto immune rheumatic diseases.