In other species: dog , horse , pig , taurine cattle , goat , sheep

Categories: Pigmentation phene

Links to possible relevant human trait(s) and/or gene(s) in OMIM: 184745 (gene) , 611664 (trait)

Mendelian trait/disorder: yes

Mode of inheritance: Autosomal incomplete dominant

Disease-related: no

Key variant known: yes

Year key variant first reported: 2023

Molecular basis: Shah et al. (2023) "conducted a genome-wide association study (GWAS) by using 13 roan and 14 non-roan alpacas sampled from the USA, Australia, and New Zealand. Regions of genome-wide significance were examined for variants that correlated with the roan phenotype. ... [The authors] identified the candidate SNP-containing region (Super-Scaffold_15:39 742 096–39 887 419) to be a 145 kb copy number variant (CNV) that is likely to be a tandem duplication. All 13 roan alpacas had one or two copies of the roan-associated T allele and all except three non-roans had zero copies."

Associated gene: