Protection by SC-administered plant-derived PGT121 against intravaginal SHIVSF162P3 challenge in rhesus macaques as measured by log 10 vRNA (copies/ml of plasma).

<p>(A) Protection in 6/6 macaques that received 3.7–7.1 mg/kg doses of PGT121 given 24 hr prior to SHIV SF162P3 challenge. Insert shows a linear correlation between ID50 and dose (3.5–7.1 mg/kg) at 24 hr; ID50 values at doses of 3.86, 4.7 and 5.6 mg/kg were 1:202, 1: 612 and 1: 738 respectively). (B) Protection in 5/6 macaques administered 5 mg/kg SC immediately after SF162P3 challenge. (C) Four control macaques received no passive bnAb. Application of Fisher’s Exact Test showed that protection of animals given PGT121 prior to challenge (panel A) compared to the control group (panel C) was statistically significant (p = 0.03), while protection of animals given PGT121 after challenge was not (p = 0.19).</p

Circulatory clearance profiles of 5mg/kg of plant-derived PGT121 in African Green monkeys following SC and IM injections.

<p>Neutralizing ID50s were assessed at different times after injection using a pseudovirus-based TZM-bl assay against the Tier 2 SHIV-SF162P3.</p