Loss of COP9 signalosome gene-containing 2q region is associated with lenalidomide and pomalidomide resistance in myeloma patients by Gooding, S, Ansari-Pour, N, Kazeroun, MH, Karagoz, K, Salazar, MA, Fitzsimons, E, Estevez, MO, Towfic, F, Flynt, E, Pierceall, WE, Yong, K, Vyas, P, Thakurta, A