BCL2 and follicular lymphoma: For example, using complex DNA fiber-FISH and three-color interphase FISH techniques on samples from follicular lymphoma patients devoid of the hallmark t(14;18)(q32;q21) translocation, Vaandrager et al. identified two cases in which the BCL2 gene was excised from 18q21 and inserted into the IGH locus at 14q32 [58].