has material basis in germline mutation in CNGB3 muscular channelopathy CNGB3-related retinopathy https://github.com/monarch-initiative/mondo/issues/3898 Rod monochromatism 1 (formerly) Rod monochromacy 1 (formerly) RMCH1 (formerly) MONDO:0100446 rod monochromatism 1, formerly ACHM1 rod monochromatism 1 ACHM1, formerly A retinopathy caused by biallelic variants in the CNGB3 gene. achromatopsia type 3 achromatopsia with myopia RMCH1 CNGB3 retinopathy achromatopsia 3 GARD:0026221 rod monochromacy 1 rod monochromacy 1, formerly ACHM1 (formerly) ACHM3 total colorblindness with myopia achromatopsia caused by mutation in CNGB3 CNGB3 achromatopsia hereditary neuromuscular disease