staphylococcal aureus protein A April 12, 2017 staphylococcal aureus protein A Trade Name Orphan Indication Immune thrombocytopenic purpura USA Market Approval USA USA Designation Date 2015-06-10 00:00:00 Sponsor Protalex, Inc.;131 Columbia Turnpike, Suite 1;Florham Park, New Jersey, 07932