Prognostic implications of RB1 tumour suppressor gene alterations in the clinical outcome of human osteosarcoma: a meta-analysis.
Primary osteosarcoma is the most frequent malignant bone cancer in children and teenagers. Genetic alterations at the retinoblastoma 1 (RB1) gene has been implicated in the development and progression of human osteosarcoma. Here, we performed a meta-analysis to examine the impact of RB1 mutations on the survival of osteosarcoma patients, the risk of metastasis and the histological response of osteosarcoma to chemotherapy. A systemic review of the Medline, Embase, Scopus and Cochrane Library yielded 12 eligible studies with 491 patients for this study. Forest plots resulting from our meta-analyses illustrate that loss of RB1 function results in a 1.62-fold increase in the mortality rate for osteosarcoma patients (RR = 1.62, 95% CI: 1.23-2.13; Z = 3.44, P = 0.0006), a significant increase in osteosarcoma metastasis (OR = 3.95, 95% CI: 1.86-8.38; Z = 3.57; P = 0.0004), and a significant reduction in the histological response of osteosarcoma to chemotherapy (OR = 0.35; 95% CI: 0.13-0.94; Z = -2.08; P = 0.038). Additionally, the nearly symmetrical funnel plot (Egger's test, t = 1.15, P = 0.288) indicates absence of publication bias regarding the meta-analysis that examined the correlation of RB1 alterations with the survival rate for osteosarcoma patients. Our findings suggest that RB1 alterations may serve as a prognostic marker for the management of osteosarcoma patients.
Department of Orthopedics, The First Hospital of Jilin University, Changchun, Jilin, China.
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Ren
Department of Orthopedics, The First Hospital of Jilin University, Changchun, Jilin, China.
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Gu
D000293:Adolescent; D001859:Bone Neoplasms / Q000235:genetics* / Q000401:mortality; D002648:Child; D006801:Humans; D009154:Mutation / Q000235:genetics; D009362:Neoplasm Metastasis; D012516:Osteosarcoma / Q000235:genetics* / Q000401:mortality; D011379:Prognosis; D016160:Retinoblastoma Protein / Q000235:genetics*; D012307:Risk Factors; D016019:Survival Analysis; D055815:Young Adult
D016160:Retinoblastoma Protein

RB1
; metastasis; osteosarcoma; prognostic marker; survival