Here is a video that explains the difference as other CCR5 antagonists deep bury and block the entire CCR5 receptor and thus the differences in safety profile, immune functions, etc.

https://www.youtube.com/embed/sCMwoVYeRA0?autoplay=1

This link can be found on the CYD website under useful links on the cancer page.

https://www.cytodyn.com/pipeline/cancer

Hopefully this helps or what you are looking for.