Description of Variants Found in TMEM18 Region. There are 2180 variants (288 common variants) in total found in chr2:586432-677539 region. The classification of these variants includes 1891 variants annotated as intergenic, 164 intronic, 33 upstream, 25 downstream, 46 UTR3, 5 UTR5, 9 exonic nonsynonymous, 6 exonic synonymous, and 1 splicing. The figure shows the percent of variants within each category stratified by the allele frequency (rare/common variant). In addition, among 2180 variants, 405 (35 common) are in the transcriptional region.