Can gene therapy induce 5α-Reductase deficiency with current technology?

[Megatherium0]

I have no background in biology, but I am thinking about possible permanent treatments for Male Pattern Hair loss(MPHL) that are possible with current technology and I wonder if it is possible to give someone 5α-Reductase deficiency, a condition caused by a mutation in a gene encoding the enzyme 5α-reductase type 2(the main cause of MPHL) by using gene therapy. Is gene therapy like that can be in the form of an injection that can be shipped internationally?, Can it be developed with current technology?.

People with 5a-Reductase deficiency do not suffer from MPHL and The only problems with this condition arise from the fact that people are born with this so their genitals don't develop normally because of it. But other than that they don't suffer from anything else and they are even fertile.