ITGAE and hairy cell leukemia: However, some reports have identified B-PLL as a subtype of MCL[7] and this led to B-PLL harboring at (11; 14) abnormality being classified as MCL in the 2022 (5th edition) WHO Classification;[4] The absence of cytoplasmic hairy projections and villi would exclude hairy cell leukemia variants, while the negative detection of both CD25 and CD103 would exclude splenic marginal zone lymphoma.