Gene therapy is a technique that involves replacing, inactivating, or adding a new gene to treat or prevent a disease. The science of GENE THERAPY involves the DNA-based changes in genetic material so that the gene can transcribe a healthy protein. In the past, there has been no success in designing any gene therapies to treat any disease effectively. But recent years saw a boost in the advancements in this area. Recent clinical breakthroughs in the field of Gene therapy have given a new ray of hope to the patients suffering from cancer, retinal disease, haemophilia, neurodegenerative conditions, and other diseases. The U.S. Food and Drug Administration (FDA), over p...