Additionally, work by Kulasingam et al. has measured the serum levels of ALCAM in 150 patients with breast cancer vs. control groups (100 healthy women and 50 men), along with two other tumour markers, CEA (carcinoembryonic antigen) and CA15-3 (cancer antigen 15.3) [118]. This evidence concerns the gene CEACAM5 and breast carcinoma.