I took a very close look on the research, when it comes to genetics You Will not find anyone more dedicated on the subject. I can guarantee You that the mutation on that research was mottling, I did not want to mention this(what I am about to tell You) as not to give You more ideas but You may want to research more about Dr. Smyth line of auto inmune Vitíligo That may look similar to mottling or pied
View attachment 2283125
You may want to research about the difference of Piedbald and Vitíligo and mottling, with That said I Will no longer post on this thread