Comparison of somatic mutation patterns in HBsAg⁺ and HBsAg⁻ FLs. Frequency of nonsilent mutations in HBsAg⁺ (n = 27) and HBsAg⁻ (n = 82) FLs identified from WES/WGS and/or lymphochip. The histological grades for each sample are marked by different color bars at the bottom. The P value was compared by the χ² test. G, grade.