Apparently it was a hemotopoietic stem cell transplantation that only worked due to the mutation. They tried the procedure on people that didn't have the mutation and it didn't work. If you want the specific details, then you just need to look up his name.
so ig uess the term is functionally cured, they have the virus but do not need medication anymore... https://en.wikipedia.org/wiki/The_Berlin_Patient
"A child known as the Mississippi baby was once considered part of this elite group but has since suffered a relapse.[5] Timothy Ray Brown is the only individual who is considered to have a sterilizing cure, meaning he no longer harbors the HIV virus within his body."
and it talks about like 14 people who are functionally cured.
i think at that point you'd be considered cured
"A child known as the Mississippi baby was once considered part of this elite group but has since suffered a relapse.[5] Timothy Ray Brown is the only individual who is considered to have a sterilizing cure, meaning he no longer harbors the HIV virus within his body."
and it talks about like 14 people who are functionally cured.