 Some breeders have shown concern regarding the lack of genetic diversity in the breed due to inbreeding caused by a small gene pool. Researchers who completed the 2007 DNA study found that the Singapura (along with the Burmese) have the least genetic diversity among the 22 breeds studied. The possibility of outcrossing with another breed to increase the genetic diversity had been raised among CFA breeders, but not many were receptive to the idea, preferring to use Singapuras from around the world that are not so closely related to the CFA line. In April 2013, UK's Governing Council of the Cat Fancy started allowing outcrossing for the breed. Individuals chosen have to meet certain health and appearance requirements.
