Gene therapy is an experimental technique in which with the usage of genes the diseases are treated. whereas gene therapy is now a day’s approaching as a precious remedy for number of infections (including inherited disorders, some types of cancer, and certain viral infections), but then also the method remains unreliable and is still under study to make sure that it will be safe and productive. Currently, gene therapy is only being checked for the treatment of diseases that have no other remedy choices. Most often, the employed of gene therapy is based on inserting a healthy wholesome exact replicate of a defective gene into the patient's units to make the functional protein.