Al-Sawaf, O Richter transformation in chronic lymphocytic leukemia (CLL)-a pooled analysis of German CLL Study Group (GCLLSG) front line treatment trials. [electronic resource] - Leukemia 01 2021 - 169-176 p. digital Publication Type: Clinical Trial, Phase II; Clinical Trial, Phase III; Journal Article; Multicenter Study; Research Support, Non-U.S. Gov't ISSN: 1476-5551 Standard No.: 10.1038/s41375-020-0797-x doi Subjects--Topical Terms: AdultAgedAged, 80 and overBiopsyCell Transformation, Neoplastic--geneticsDisease ProgressionFemaleGenetic VariationGermanyHumansLeukemia, Lymphocytic, Chronic, B-Cell--geneticsLymphoma--etiologyMaleMiddle AgedNeoplasm GradingNeoplasm StagingPrognosisSurvival AnalysisTime FactorsYoung Adult