1 Dermatology Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York.
2 Department of Neurology, Memorial Sloan Kettering Cancer Center, New York, New York.
3 Department of Neurology, Memorial Sloan Kettering Cancer Center, New York, New York; Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York; Department of Pharmacology, Weill-Cornell Graduate School of Biomedical Sciences, New York, New York.