 that are not maternal and paternal copies of the same chromosome.This particular translocation, designated t(1;22)(p13;q13), occurs mainly in infants but also is seen in children up to the age of 7 years with non-DS-AMKL.This translocation involves the "RBM15" gene on chromosome 1 and the "MKL1" gene (also termed MRTFA) on chromosome 22 to create a RBM15-MLK1 fusion gene.