text:  but then I'll need to make choices. She's worried her limited Advantage plan won't let her access the most innovative treatments. These slots are highly coveted, and it's very hard to get in from an Advantage plan. And the Advantage plans aren't really running these cutting-edge clinical trials. So she feels stuck. Her pre-existing condition, the cancer for which she needs treatment, would be cause for a Medigap plan to deny her coverage.