CEACAM5 and neoplasm: Tumor markers revealed high Alpha-Fetoprotein (AFP) levels of 754 kIU/l (normal range: <5.8 kIU/l), as well as slightly elevated carcinoembryonic antigen (CEA) (4.7 μg/l, normal range: <3.4 μg/l) and carboanhydrate-antigen 19-9 (CA 19-9) (47.7 U/ml, normal range: <34 U/ml) (Fig. 1a).