Clonality among patients with indolent-type ATL. Each colored bar segment represents a unique clone, and the segment width indicates the clone size. (A) Longitudinal analysis of clonality among patients with indolent types of ATL (SM and chronic ATL) who exhibited oligoclonal or monoclonal patterns. (B) Clonality among individuals with SM and chronic ATL who progressed to acute ATL over time. These samples largely exhibited monoclonal patterns.