Proposing <i>GLMN</i>, encoding glomulin, as a novel gene for Dowling–Degos disease

Dowling–Degos disease (DDD) is a rare hyperpigmentation disorder with autosomal-dominant inheritance. To date, work by our group and others has identified a total of four DDD sub-phenotypes, which arise secondary to variants in KRT5, POFUT1, POGLUT1 and PSENEN. We postulate that GLMN is a novel fifth gene for DDD that contributes to a hitherto unrecognized DDD sub-phenotype.