CHN1（chimerin 1），癌症关联基因，基因ID：1123，该基因编码ras相关p21 rac的GTPase激活蛋白和佛波酯受体它主要在神经元中表达，在神经元信号转导机制中起重要作用。该基因突变与Duane's退缩综合征2（Durs2）有关。另外，编码不同亚型的剪接转录变体已经被描述为该基因[由RefSeq提供，2011年4月]This gene encodes GTPase-activating protein for ras-related p21-rac and a phorbol ester receptor. It is predominantly expressed in neurons， and plays an important role in neuronal signal-transduction mechanisms. Mutations in this gene are associated with Duane's retraction syndrome 2 (DURS2). Alternatively spliced transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq， Apr 2011]。