This is a great honor for Jeannie Lee , and wonderful news for our Department. Jeannie joined our Department as an Assistant Professor in 1997. She has been a leader in the field of X chromosome inactivation and a pioneer in discovering roles for long non-coding RNAs. Her lab discovered Tsix, a key lncRNA involved in regulating X inactivation, discovered DNA elements key to this process, and has done important work in in elucidating the roles for the YY1 protein and the PRC2 complex in this process. The work coming out of Jeannie’s lab is directly relevant to human disease, including fragile X syndrome and Rett syndrome. Jeannie has been the recipient of many honors and awards, and her election to the NAS is richly deserved.