Connie
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        Hello.  I am so sorry about your brother.  Tell him to hang in there and try not to get discouraged.  I also have AA.  I have been treated with ATG (horse serum) and am now undergoing treatment with rabbit serum.  Will do what ever it takes!  I am also on the registry for tansplant if needed.  I know there are clinical trials he can try. You can look up hospitals and doctors on the internet.  I found some just by trial and error.  They also have people you can call and write do with the same disease.  It is very helpful.  They have lots of info.  I wish you the very best!  Connie