Several methods exist to achieve immunosuppression in cancer patients. These include the use of corticosteroids, which broadly suppress immune activity, and immunosuppressive drugs like cyclosporine and tacrolimus, which inhibit specific pathways in immune cells. Another approach is radiation therapy, which can target and destroy immune cells in specific areas. Each method has its own set of benefits and risks, and the choice of treatment depends on the patient's specific condition and overall health.