SINDROM TAR SINDROM TAR / syndrome TAR / TAR syndrome. [^U-ronvn e.ng[.: irfirom6ocytopenia â Absent Radius.} S. ereditar cu transmitere autozomal recesiva, in care trombocitopenia si *aplazia radiusu-lui se pot Tnsoti si de malformatii cardiace (*tetrada Fallot, defect septal atrial) si renale.