However, Spearman correlation analyses did not reveal a significant positive correlation between levels of HYAL1 mRNA and either grade or stage in clear cell (r = 0.262 and −0.322 for grade and stage respectively in our data set, and r = 0.055 for stage in the microarray data, all P>0.05) or mucinous tumor samples (r = −0.655 and −0.577 for grade and stage respectively in our data set, and r = −0.094 and −0.378 for grade and stage in the microarray data, all P>0.05). Here, HYAL1 is linked to mucinous neoplasm.