Gene therapy medications are used to treat certain types of cancer, genetic disorders, and blood conditions. These medications work by introducing new genetic material into your cells to correct or replace faulty or missing genes. These treatments are often given as a single dose, and they're administered as injections or infusions. Examples include Abecma (idecabtagene vicleucel), Breyanzi (lisocabtagene maraleucel), Luxturna (voretigene neparvovec), and more.