EWSR1 Rearrangement and CD99 Expression as Diagnostic Biomarkers for Ewing/PNET Sarcomas in a Moroccan Population

Table 2

Comparison between IHC and FISH test for the diagnosis of EPS.

	CD99 antibody	EWSR1 break apart
Number of cases	56	56
Sensitivity	88%	100%
Specificity	58%	87%
PPV	48%	89%
NPV	92%	100%
Youden’s index	0,55	0,9

Abbreviations: NPV: negative predictive value, PPV: positive predictive value.