Later, Stahl et al. in 2019 identified 30 loci; 20 new loci were considerably associated with BD, eight showed association with schizophrenia, and three loci (NCAN, TRANK1, and chr7q22.3:105 Mb loci) shared associations with both BD and schizophrenia [53]. This evidence concerns the gene NCAN and Behcet disease.