FMR2, a novel gene associated with the FRAXE CCG repeat and CpG island. Gu Y, Shen Y, Gibbs RA, Nelson DL.

A chromosome band 4q21 gene (MLLT2, formerly called AF-4/FEL) involved in a reciprocal translocation with chromosome band 11q23 in t(4;11) acute leukemia has been cloned Chen CS, Bejcek BE, Kersey JH.

FMR2 shows similarity with another human protein, MLLT2, expressed from a gene at chromosome 4q21 involved in translocations found in ALL  Gu Y, Shen Y, Gibbs RA, Nelson DL.

FRAXA expansion results in fragile X syndrome due to down regulation of expression of the FMR1 gene  Gu Y, Shen Y, Gibbs RA, Nelson DL.