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. 2021 Jul 29;88(4):1667–1678. doi: 10.1111/bcp.14980

TABLE 3.

Proportion of participants with cabotegravir concentrations >PA‐IC90 and ≥4× PA‐IC90 in plasma, tissues and fluids after repeat oral dosing and after a single 600‐mg intramuscular injection across sexes

Visit Proportion, % a
Plasma (n = 15) Cervical tissue (n = 7) Vaginal tissue (n = 7) Cervicovaginal fluid (n = 7) Rectal tissue (n = 13) Rectal fluid (n = 12)
Oral 30 mg
Day 28
>PA‐IC90 100 100 100 86 100 100
≥4× PA‐IC90 100 71 29 43 23 100
IM 600 mg
Day 3
>PA‐IC90 100 100 71 86 69 92
≥4× PA‐IC90 100 43 29 29 8 50
Day 8
> PA‐IC90 100 86 100 92 100
≥4× PA‐IC90 100 43 29 39 100
Week 4
>PA‐IC90 100 71 43 77 83
≥4× PA‐IC90 100 29 14 0 50
Week 8
>PA‐IC90 100 43 43 14 23 67
≥4 × PA‐IC90 53 0 0 0 0 8
Week 12
>PA‐IC90 60 14 14 8 33
≥4 × PA‐IC90 20 0 0 0 17

IM, intramuscular; PA‐IC90, in vitro protein‐adjusted 90% maximal inhibitory concentration.

a

PA‐IC90 = 0.166 μg/mL and 4× PA‐IC90 = 0.664 μg/mL.