The Reason for this web page is to help anyone confronted with TAR's Syndrome and at the same time find support for my own son. Radial Aplasia-Amegakaryocytic Thrombocytopenia Radial Aplasia-Thrombocytopenia Syndrome Thrombocytopenia-Absent Radii Syndrome TAR Syndrome On September 28, 1998 my son Alex was born with thrombocytopenia (low platelet count) and missing radii in ...