The highest BNP concentrations were found in AIS + AF patients while AIS patients without AF and AF patients without AIS had similar BNP levels (AIS + AF: 186.3 pg/mL, SD: 153.6; AIS without AF: 59.5 pg/mL, SD: 49.3 vs. AF without AIS: 68.1 pg/mL, SD: 53.5). This evidence concerns the gene NPPB and androgen insensitivity syndrome.