CACNA1H and Dystonia: Notably, an association between CACNA1H, which encodes a subunit of the neuronal voltage-gated T-type calcium channel Calcium Voltage-Gated Channel Subunit Alpha1 H, and dystonia has been proposed because a weighted dystonia gene co-expression network [6] directly connected CACNA1H to the known dystonia gene KCTD17, which encodes the protein Potassium Channel Tetramerization Domain Containing 17, leading to the assumption that both proteins function in the same signalling pathway.