CD276 and acute myeloid leukemia: We propose the detection of B7-H3 with our new clone 8H8 as a promising novel biomarker for efficient immunophenotyping and suggest the use of the specific fluorescence intensity (SFI) cut-off of 4.45 to discriminate between B7-H3high and B7-H3low expression in order to improve risk stratification of AML patients.