As a result, an the BCL2 gene from chromosome 18 is placed after the immunoglobulin heavy chain promoter on chromosome 14, and that results in overexpression of bcl-2.

因此，一个来自18号染色体的BCL2基因被易位到14号染色体的免疫球蛋白重链启动子后，导致BCL-2过表达。