CREB3L1 and serous adenocarcinoma: Only in 4 out of 13 analyzed specimens, including one patient with the stage IIIC low-grade serous carcinoma, were the relative expression levels of CREB3L1 higher than the mean value of 1.4 ± 1.9 SD (standard deviation), supporting the lack of association between OC disease subtype and disease stage.