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The APC2 gene (OMIM *612034, also known as APCL) is widely expressed in the brain, predominantly in the cortex and hippocampus. It encodes adenomatous polyposis coli protein-2 (APC2), primarily distributed along actin fibers and microtubules throughout the neurites, growth cones, and cell bodies [1]. As involved in promoting microtubule dynamics and controlling dendritic development [1,2], APC2 plays an important role in regulating neuronal migration and axon guidance. In mice, homozygous knock-out of Apc2 caused impaired neuronal migration, growth retardation, and resulted in seizure behaviors [3], suggesting pathogenic roles in brain malformations and epilepsy.