title: Predictive value of osteocalcin and beta-CrossLaps in metastatic breast cancer.
abstract: OBJECTIVE
  Assessment of the diagnostic value of serum CEA, CA 15.3, osteocalcin (OC) and beta-CrossLaps (beta-CTX) in the detection of metastatic breast cancer.
  
  
  METHODS
  This study included 47 patients with breast cancer (20 non-metastatic breast cancer, 11 bone metastasis, 11 soft tissue metastasis, 5 bone plus soft tissue metastasis), 10 patients with benign breast lesions and 13 healthy volunteers. CEA and CA 15.3 were determined using microparticle enzyme immunoassay; while OC and beta-CTX were measured by electrochemiluminescence immunoassay.
  
  
  RESULTS
  CEA, CA 15.3, OC and beta-CTX median levels were higher in breast cancer patients compared to controls (p=0.006, 0.001, 0.004 and 0.038, respectively). Increased levels of OC and beta-CTX were demonstrated in bone metastatic patients compared to non-metastatic or soft tissue metastatic patients (p=0.000).
  
  
  CONCLUSIONS
  Combined use of OC and beta-CTX could be useful in early detection of bone metastatic breast cancer which might improve the outcome of the disease.
authors: Faculty of Science, Biochemistry Department, Ain Shams University, 11566, Abbassia, Cairo, Egypt.
authors: Ahmed M
authors: AM
authors: Salem
authors: Samir F
authors: SF
authors: Zohny
authors: Manal M
authors: MM
authors: Abd El-Wahab
authors: Rehab
authors: R
authors: Hamdy
mesh_terms: D014408:Biomarkers, Tumor / Q000097:blood; D001859:Bone Neoplasms / Q000097:blood / Q000556:secondary; D001943:Breast Neoplasms / Q000097:blood* / Q000473:pathology; D002272:Carcinoembryonic Antigen / Q000097:blood; D003094:Collagen / Q000097:blood*; D004534:Egypt; D005260:Female; D006801:Humans; D008875:Middle Aged; D018396:Mucin-1 / Q000097:blood; D015675:Osteocalcin / Q000097:blood*; D010446:Peptide Fragments / Q000097:blood*; D011237:Predictive Value of Tests; D012372:ROC Curve; D012983:Soft Tissue Neoplasms / Q000097:blood / Q000556:secondary
chemical_list: D014408:Biomarkers, Tumor; D002272:Carcinoembryonic Antigen; D018396:Mucin-1; D010446:Peptide Fragments; C110762:glutamyl-lysyl-alanyl-histidyl-aspartyl-glycyl-glycyl-arginine; D015675:Osteocalcin; D003094:Collagen