Oncotarget

Meta-Analysis:

Prognostic value of bone scan index as an imaging biomarker in metastatic prostate cancer: a meta-analysis

Dongyang Li, Hang Lv, Xuanyu Hao, Yudi Dong, Huixu Dai and Yongsheng Song _

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Oncotarget. 2017; 8:84449-84458. https://doi.org/10.18632/oncotarget.19680

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Abstract

Dongyang Li1,*, Hang Lv2,*, Xuanyu Hao3, Yudi Dong4, Huixu Dai5 and Yongsheng Song1

1Department of Urology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China

2Department of Urology, Liaoning Cancer Hospital and Institute, Cancer Hospital of China Medical University, Shenyang, Liaoning 110042, P.R. China

3Department of Rheumatology and Immunology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, P.R. China

4Department of Medical Research Center, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China

5Department of Clinical Epidemiology and Evidence-based Medicine, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China

*These authors contributed equally to this work

Correspondence to:

Yongsheng Song, email: [email protected]

Keywords: metastatic prostate cancer, bone scan index, prognosis, survival, meta-analysis

Received: March 26, 2017     Accepted: June 30, 2017     Published: July 29, 2017

ABSTRACT

Background: The prognostic value of the bone scan index (BSI) in metastatic prostate cancer (mPCa) remained controversial. Therefore, we performed a meta-analysis to determine the predictive value of BSI and survival in patients with mPCa.

Materials and Methods: A literature search was performed in PubMed, Embase, Web of Science and Cochrane library databases. Hazard ratios (HRs), concordance indices (C-indices) were extracted to estimate the relationship between BSI and survival in patients with mPCa. Subgroup analyses were conducted on different types of mPCa, ethnics, cut-off values and sample sizes.

Results: 14 high quality studies involving 1295 patients with mPCa were included in this meta-analysis. The pooled results indicated that high basline BSI and elevated BSI change on treatment (ΔBSI) were significantly predictive of poor overall survial (HR = 1.29, P < 0.001; HR = 1.27, P < 0.001, respectively). Baseline BSI was also significantly related to cancer specific survival (HR = 1.65, P = 0.019) and prostate specific antigen recurrence survival (HR = 2.26, P < 0.001). Subgroup analysis supported main results. Moreover, BSI could increase the C-indices of predictive models.

Conclusions: Baseline BSI and ΔBSI may be beneficial to mPCa prognosis in clinical monitor and treatment. Further high quality studies with larger sample size are required in the future.


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