- Breakpoints of the t(11;18)(q21;q21) in mucosa-associated lymphoid tissue (MALT) lymphoma lie within or near the previously undescribed gene MALT1 in chromosome 18. Morgan, J.A., Yin, Y., Borowsky, A.D., Kuo, F., Nourmand, N., Koontz, J.I., Reynolds, C., Soreng, L., Griffin, C.A., Graeme-Cook, F., Harris, N.L., Weisenburger, D., Pinkus, G.S., Fletcher, J.A., Sklar, J. Cancer Res. (1999)