Prognostic importance of thrombospondin-1, VEGF, PDGFR- β in diffuse large B-cell lymphoma

Abstract

Aim: In this study, we aimed to investigate the relationship between the staining rates of thrombospondin-1, VEGF, and PDGFR-in tissue preparations in patients diagnosed with DLBCL and their clinical features at the time of diagnosis, and response to treatment and prognosis. Material and Method: A total of 44 patients with a diagnosis of DLBCL and 13 patients diagnosed with control reactive lymphadenopathy were included in this study. After immunohistochemical staining of the pathology preparations of the patient and control groups with VEGF, PDGFR-β and thrombospondin-1 stains, the clinical characteristics of the patients and the relationship between survival analysis and staining rates were statistically analyzed. Results: When the patients were compared with the control group in terms of VEGF, PDGFR-β, and thrombospondin-1 staining rates, we found that staining with PDGFR-β was lower in patients (p=0.009). Although it was not statistically significant for PDGFR-β, it was observed that 5-year OS and PFS values were low in patients with high levels of expression, on the contrary, 5-year OS was low in patients with high thrombospondin staining rate. A negative correlation was observed between thrombospondin-1 and PDGFR-β (p=0.003, r=-0.440). Conclusion: As a result, although no relationship was found between VEGF and survival in our study, it was observed that PDGFR-β and thrombospondin-1 were effective in prognosis. A negative correlation was observed between thrombospondin-1 and PDGFR-β.

Keywords

• Diffuse large B cell lymphoma
• thrombospondin-1
• VEGF
• PDGFR-β
• prognosis

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