NOTE.—M/F/na male/female/not available. When both parents of a participant reported different ethnicities for themselves, the participants were considered multiracial. Frequencies of K113 and K115 in three major ethnicities from two geographical regions are shown. Both the insertions were more common in African Americans in both geographical regions. The frequency of K115 insertion was higher in African Americans from New York than those from San Francisco. There were a total of five individuals, mostly African Americans, homozygous for K113 insertions. None were homozygous for K115 insertions.