The third sample was old and could not generate quality DNA When considering the diagnostic performance of SMARCA4 across diagnostic classes, specificity remained homogeneous and robust at 88% for sarcomatous tumours, 92% for germ cell, 94% for sex-cord and 100% for undifferentiated epithelial ovarian tumours (Fisher exact test: p = 0.94) (Table 3). This evidence concerns the gene SMARCA4 and neoplasm.