CACNA1F and congenital stationary night blindness 2A: Large-scale DNA sequencing of Xp11.23, the genomic region implicated in X-linked incomplete CSNB (CSNB2A), led to the simultaneous identification by two research groups of mutations in the recently discovered gene “CACNA1F” in individuals with the condition [10, 11]. CACNA1F had been annotated in a publication only one-year prior, where segments of sequence were recognized as having high homology to known VGCC pore-forming α1 subunits [12]. CACNA1F is now known to code for α1F, the primary subunit of the voltage-gated L-type calcium channel CaV1.4.