在人类中，ZIM2和PEG3（GeneID:5178）是两个不同的基因，它们共享一组5'外显子，有一个共同的启动子，并且这两个基因都是父系表达的选择性剪接事件将共享的外显子与Zim2特有的其余4个外显子或PEG3特有的其余2个外显子连接起来。这与小鼠和奶牛不同，它们的Zim2和PEG3基因并不共用外显子，而且Zim2的印记状态在哺乳动物中也不保守。另外5'交替剪接的转录本编码相同的蛋白质已经被发现为人类的Zim2基因。[由RefSeq提供，2010年10月]
In human, ZIM2 and PEG3 (GeneID:5178) are two distinct genes that share a set of 5' exons and have a common promoter, and both genes are paternally expressed. Alternative splicing events connect the shared exons either with the remaining 4 exons unique to ZIM2, or with the remaining 2 exons unique to PEG3. This is in contrast to mouse and cow, where ZIM2 and PEG3 genes do not share exons in common, and the imprinting status of ZIM2 is also not conserved amongst mammals. Additional 5' alternatively spliced transcripts encoding the same protein have been found for the human ZIM2 gene. [provided by RefSeq, Oct 2010]