Prediction of PTCL subgroups using RT-MLPA. The assay was used to differentiate AITL, ALCL, ATLL, HSTL and NKTCL within 101 biopsies. Differential gene expression is depicted according to a red (positive) to green (negative) color scale (lower panel). Concordances with histopathological diagnosis and immunohistochemisty are indicated in the upper panel.