Your aunt has medullary thyroid cancer and is part of a large, randomized study of a new drug for treatment. what is she enrolled in?

The aunt with the medullary thyroid cancer has enrolled in a study which is testing the effects of a new drug treatment for the cancer. Such study is known as emergent research. In this type of research, the data is collected over new analysis procedures. Then, based on these data, the course of the study can be improved.

Hence, the answer is 'emergent research'.