Monosomy 7 Myelodysplasia and Leukemia Syndrome 1, also known as monosomy 7 of bone marrow, is related to familial monosomy 7 syndrome and centralopathic epilepsy. An important gene associated with Monosomy 7 Myelodysplasia and Leukemia Syndrome 1 is SAMD9L (Sterile Alpha Motif Domain Containing 9 Like). Affiliated tissues include bone marrow and bone.