Can Insulin-Like Growth Factor 1 (IGF-1), IGF-1 Receptor, Connective Tissue Growth Factor and Ki-67 Labelling Index Have a Prognostic Role in Pulmonary Carcinoids?
Introduction: Altered expression of Insulin-like Growth Factor-1 (IGF-1), its receptor (IGF-1R), Connective Tissue Growth Factor (CTGF) and Hypoxia Factor-1 (HIF-1), has been implicated in tumorigenesis. These factors have not been studied systematically in Pulmonary Carcinoids (PCs).
Aim(s): To examine IGF-1, IGF-1R, CTGF and HIF-1 expression in PCs, and assess their prognostic value over Ki67.
Materials and methods: Retrospective study of 121 PCs (104 Typical; TCs and 17 Atypical; ACs). The expression of growth factors was studied immunohistochemically and tumors were considered positive if immunoreactivity appeared in >50% of cells.
Conference: 15th Annual ENETSConcerence (2018)
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