A clinical case of the effective combined use of BCL-2 and PI3K inhibitors in the treatment of a patient with an unfavorable chronic lymphocytic leukemia with transformation into diffuse large B-cell lymphoma (Richter’s syndrome) - O. A. Rukavitsyn; V. P. Pop; M. V. Drozd; Yu. E. Ryabukhina (Онкогематология, 2022)