Clinical trials of Alpha 1 Antitrypsin (AAT), developed by Dr Eli Lewis of Ben Gurion University, reduced insulin dependence in Type 1 diabetes sufferers and cured several of the disease. Some physicians are now prescribing AAT as an off-label treatment ahead of FDA approval.
http://www.jns.org/latest-articles/2014/2/19/ben-gurion-university-researcher-may-have-a-cure-for-type-1-diabetes#.Uws82c6s9-c