OCI by clinical and proviral subtype. (A) Median OCI of the ACs was 0.33 (range, 0.14-0.87), and median OCI for the ATL (all subtypes combined) was 0.91 (range, 0.47-1.0). There was no difference in OCI between ATL clinical subtypes. (B) There was no difference in OCI between the different mechanisms of proviral silencing. PV, provirus.