Another Japanese group carried out a separate GWAS, identifying S1 RNA binding domain 1 (SRBD1) and ELOVL fatty acid elongase 5 (ELOVL5) as new susceptibility genes for both normal tension glaucoma (NTG) and POAG (with the most highly associated SNPs being rs3213787 in SRBD1 and rs735860 in ELOVL5) [18]. Here, SRBD1 is linked to low tension glaucoma.