ERN1 and neoplasm: Although it was associated with the stage score, neither IRE1α nor cytosolic XBP1 expression levels were correlated with lymph node (p values 0.78 and 0.58), distant metastasis (p values 0.49 and 0.77) or tumor scores (p values 0.49 and 0.77) in RMS patients (Table 1).