I haven't had any patients, luckily, who have done that, but yes, I have certainly heard of situations in which that's happened. I've actually had patients who have told me that was their plan, because we do ask what they will do if they are not found eligible.
I think it's a difficult situation for patients. That's not a choice they want to make, but they often feel they want to have the autonomy to choose how they want to live and how they want to die, or when they want to die.