Hale told “CBS This Morning” cohost Norah O’Donnell that, unlike other cancers, melanoma doesn’t respond well to chemotherapy or radiation therapy, which is why advanced melanoma is so deadly. “But recently and over the past several years, there have been ten new immunotherapies,” she said.  “We know melanoma is a very smart cancer and it can deceive our immune system. So, by using immunotherapy to stimulate out own immune system to attack melanoma, the improvement in survival has been gradually increasing. Unfortunately, these therapies do have significant side effects.” She said that skin cancer, when it’s caught early, is almost always curable, provided people get an early skin check based on “the A, B, C, D and Es of melanoma”: “If you see a mole that is new or changing, get in to see a board-certified dermatologist for a skin check every year,” Hale said, “but if you’ve had skin cancer, get in at least twice a year.” “CBS This Morning” continues its coverage of Skin Cancer Awareness Month tomorrow, when Dr. Tara Narula separates fact from fiction when it comes to how sunscreens work.