Xiaopeng Guo is a neurosurgery resident at Peking Union Medical College Hospital, Beijing, China, with an interest in skull base tumors, especially pituitary adenomas and meningiomas. He spent 6 months in the Bi Lab at the Brigham and Women’s Hospital as a joint PhD student with Peking Union Medical College, where he investigated the immune landscape of human meningiomas and the natural history of recurrent meningiomas.