Similarly, miR-138-5p, which is involved in migration, axonal growth, or in determining the size of dendritic spines [44,45,46], has been shown to regulate both the expression and activity of pro-apoptotic factors (i.e., Casp3, Casp7, and Bak1) following traumatic spinal cord injury [26]. The gene discussed is CASP7; the disease is spinal cord injury.