Some examples of the genes which can be used in gene therapy are
1. Tissue plasminogen activator (TPA) used to prevent or reverse blood clots.
2. Human growth hormone producer gene, treat pituitary dwarfism.
3. Tissue growth factor Beta (TGF-B) promotes new blood vessels and epidermal growth, useful in wound healing and burns.
4. Human blood clotting factor VIII to treat haemophiliacs.
5. Human Insulin (HUMULIN) to treat insulin dependent diabetics.