NR1I2 and Behcet disease: With regard to the copy number of the GSK3® gene in BD, Ronai et al21 reported that 1 of 260 patients with BD had amplification of the genomic region covering the entire of the GSK3® gene, and 5 of 260 patients had amplification of the genomic region from exon V of the GSK3® to the NR1I2 gene 3ʹ region without any deletion of the GSK3® 5ʹ region.