Gene therapy refers to the “deliberate introduction of genes into an organism†(Lerner & Lerner, 2008).According to Lerner and Lerner (2008), gene therapy helps to correct a genetic defect. In case of a patient suffering from a genetic disease, gene therapy can also be used to ease symptoms (Lerner & Lerner, 2008). In other words, gene therapy entails the use of corrective genetic engineering to correct defective genes.