OncoTargets and Therapy (Jul 2019)
High Tiam1 expression predicts positive lymphatic metastasis and worse survival in patients with malignant solid tumors: a systematic review and meta-analysis
Abstract
Caixia Yang,1 Chenlin Ma,1 Yingchun Li,1 Peng Mo,1 Yusheng Yang21Department of Stomatology, Qinghai province people’s Hospital, Qinghai, People’s Republic of China; 2Department of Pathology, Ninbo Yinzhou No. 2 Hospital, Ninbo, People’s Republic of ChinaBackground: Many studies have explored the prognostic value of T-cell lymphoma invasion and metastasis inducing factor 1 (Tiam1) and its association with lymphatic metastasis in malignant solid tumors, but the conclusions remain controversial. Therefore, we performed a meta-analysis to systematically assess the prognostic value of Tiam1 expression and its association with lymphatic metastasis in malignant solid tumors.Methods: We searched eligible studies in PubMed, Web of Science and EMBASE databases (from inception up to October 2018). The combined HR with 95% CI was used to estimate the prognostic value of Tiam1 expression. The correlation between Tiam1 expression and lymphatic metastasis was assessed using the combined odds ratio (OR) with 95% CI.Results: A total of 17 studies with 2,228 patients with solid tumors were included in this meta-analysis. The overall estimated results showed that high Tiam1 expression was significantly associated with shorter overall survival (HR= 2.08, 95% CI: 1.62–2.68, P<0.01), and disease-free survival (HR = 1.86, 95% CI: 1.49–2.32, P<0.01). Besides, we also found that there was a close relationship between high Tiam1 expression and positive lymphatic metastasis (OR=2.63; 95% CI: 1.79–3.84, P<0.01).Conclusion: High Tiam1 expression was significantly associated with shorter survival and positive lymphatic metastasis in patients with malignant solid tumors. Therefore, Tiam1 may be a promising prognostic biomarker and an effective therapeutic target for malignant solid tumors.Keywords: tumor, Tiam1, survival, meta-analysis
