Currently no test offered being reported. BRR has not yet been estimated, as there is no known genetic test available. Inheritance of this variant indicates that XX DSD is a complex trait in which breed genetic background affects penetrance. Furthermore, the homozygous variant genotype is associated with embryonic lethality in at least one breed. Origional Publication: 2017 Meyers-Wallen, V.N., Boyko, A.R., Danko, C.G., Grenier, J.K., Mezey, J.G., Hayward, J.J., Shannon, L.M., Gao, C., Shafquat, A., Rice, E.J., Pujar, S., Eggers, S., Ohnesorg, T., Sinclair, A.H. : XX Disorder of Sex Development is associated with an insertion on chromosome 9 and downregulation of RSPO1 in dogs (Canis lupus familiaris). PLoS One 12:e0186331, 2017. Pubmed reference: 29053721. DOI: 10.1371/journal.pone.0186331.