CD8A and incontinentia pigmenti: However, regarding EBV viral load, only total (mono and polyfunctional) CD107a iMFI on CD8+ T cells significantly differentiated IP with positive viral loads from the other groups (IP-SPOSVLPOS 123,398 vs. IP-SPOSVLNEG 20,708 and HC 21,207; p=0.03 and p=0.01, respectively).