P682: THE RESULTS OF THE RUSSIAN PROSPECTIVE STUDY OF REDUCTION AND DISCONTINUATION TREATMENT OF TKI (READIT-2020) IN CHRONIC MYELOID LEUKEMIA PATIENTS WITH DEEP MOLECULAR RESPONSE - Margarita Gurianova; Oleg Shukhov; Ekaterina Chelysheva; Anna Petrova; Anastasia Bykova; Irina Nemchenko; Elena Kuzmina; Lubov’ Gavrilova; Anna Turkina (HemaSphere, 2023)