title: Prognostic value of MIB-1, E-cadherin, and CD44 in pediatric chordomas.
abstract: The prognosis of pediatric chordomas is difficult to predict based on histology. The objective of this study was to assess the expression of a proliferation marker and adhesion molecules in pediatric chordomas and relate the expressions to outcome. In 8 pediatric chordomas, we calculated the MIB-1 labeling index (LI) by counting the number of MIB-1-positive tumor cells in 100 tumor cells. The grade of expression of E-cadherin and CD44 was calculated by estimating the percentage of tumor cells expressing these markers. MIB-1 LI correlated with tumor recurrence (P = 0.007) and low survival rate (P = 0.007). The expression of E-cadherin correlated with disease-free survival (P = 0.009), tumor recurrence (P > 0.0007), and low survival rate (P > 0.0007). CD44 expression did not correlate with recurrence (P = 0.056) or survival rate (P = 0.056). Our results suggest that MIB-1 LI and expression of E-cadherin are helpful to predict outcome in pediatric chordomas.
authors: Department of Pathology and Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45208-0529, USA.
authors: Aly G
authors: AG
authors: Saad
authors: Margaret H
authors: MH
authors: Collins
mesh_terms: D000293:Adolescent; D014408:Biomarkers, Tumor / Q000032:analysis*; D001859:Bone Neoplasms / Q000378:metabolism* / Q000401:mortality / Q000473:pathology; D015820:Cadherins / Q000378:metabolism; D015815:Cell Adhesion Molecules / Q000378:metabolism*; D049109:Cell Proliferation; D002648:Child; D002817:Chordoma / Q000378:metabolism* / Q000401:mortality / Q000473:pathology; D005260:Female; D006801:Humans; D018960:Hyaluronan Receptors / Q000378:metabolism; D007150:Immunohistochemistry; D019394:Ki-67 Antigen / Q000378:metabolism; D008297:Male; D009364:Neoplasm Recurrence, Local; D011379:Prognosis; D013100:Sphenoid Bone / Q000378:metabolism / Q000473:pathology; D013125:Spinal Neoplasms / Q000378:metabolism* / Q000401:mortality / Q000473:pathology; D016019:Survival Analysis; D016896:Treatment Outcome
chemical_list: D014408:Biomarkers, Tumor; D015820:Cadherins; D015815:Cell Adhesion Molecules; D018960:Hyaluronan Receptors; D019394:Ki-67 Antigen