Thrombocytopenia-Absent Radius Syndrome, also known as tar syndrome, is related to thrombocytopenia and glanzmann thrombasthenia 1. An important gene associated with Thrombocytopenia-Absent Radius Syndrome is RBM8A (RNA Binding Motif Protein 8A), and among its related pathways/superpathways are Embryonic and Induced Pluripotent Stem Cells and Lineage-specific Markers and Visual Cycle in Retinal Rods. Affiliated tissues include bone and bone marrow, and related phenotypes are thrombocytopenia and abnormality of coagulation