system
Given the following post, respond as if you're commenting on Reddit:
human
What's John gender?

There's a case I'm thinking about in vein of gender ontology. It's inspired and loosely based on Parfit's split-brain case.  
Imagine this case scenario:   
John is cisgender male, he suffers from specific disease and can be only saved by having his brain transferred to another, brainless body. There's one problem, only reamining body is a (biological) female body and this transfer needs to be urgent. John agrees. He kept his personality and memories intact.  
The question, is John still cisgender male, having biological female body? Is he transgender male now? Or maybe the answer is different?
gpt
Well, most philosophers think gender is a social phenomenon, so the answer is probably going to depend on how John is socialized. Is he still going by "John" and masculine pronouns afterwards? Or is she going to choose otherwise? We don't know enough about neurology right now to predict how John's self-identity will be affected by the transplant. Presumably this will determine much of John's socialization, and therefore gender.