In recent years, the field of cell and gene therapies has experienced a rapid expansion, with numerous gene therapy clinical trials gaining approval worldwide. This progress marks a significant milestone in the journey of gene therapy, as many gene therapy products have now entered the market. While gene therapy initially targeted treating genetic diseases, it is now increasingly focused on cancer, which has the highest number of cell and gene therapy trials. This innovative approach to treatments holds promise for addressing a wide range of conditions, including cancer, rare diseases, cystic fibrosis, heart disease, diabetes, haemophilia, & AIDS, potentially saving countless lives. Gene transfer, a new treatment regimen, has shown promising clinical trial outcomes.