TRPM1 and congenital stationary night blindness: In one patient with congenital stationary night blindness and ID and a possible genetic diagnosis by panel testing, heterozygous missense variant NM_002420.5:c.2951G>A; p.(Arg984His) in TRPM1, previous array comparative genomic hybridisation screening identified a heterozygous 15q13.3 microdeletion in the trans allele which resulted in loss of the TRPM1 gene NM_002420.5:c.(?_−1)_(*1_)?