CAMKK2 and myotonic dystrophy type 1: CAMKK2 is one of the most versatile calmodulin kinases and regulates neuronal development.55 The alternative splicing of CAMKK2 exon 16 results in a functional difference in the protein between axonal elongation and branching.56 In our study, the CAMKK2 variant containing exon 16, which leads to axon branching, was decreased in DM1 spinal motor neurons.