Apalutamide for patients with metastatic castrationsensitive prostate cancer in East Asia: a subgroup analysis of the TITAN trial

2021 ◽  
Vol 0 (0) ◽  
pp. 0
Author(s):  
Ding-Wei Ye ◽  
ByungHa Chung ◽  
Jian Huang ◽  
Zhang-Qun Ye ◽  
Da-Lin He ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
East Asia ◽  
Subgroup Analysis ◽  
Titan Trial

scholarly journals How can food extracts consumed in the Mediterranean and East Asia suppress prostate cancer proliferation?

2011 ◽  
Vol 108 (3) ◽  
pp. 424-430 ◽  
Author(s):  
Mu Yao ◽  
Chanlu Xie ◽  
Maryrose Constantine ◽  
Sheng Hua ◽  
Brett D. Hambly ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Cell Proliferation ◽  
East Asia ◽  
Cancer Cells ◽  
Cancer Cell ◽  
Cancer Progression ◽  
Prostate Cancer Cell ◽  
Cancer Cell Proliferation ◽  
Prostate Cancer Cells ◽  
The Mediterranean

We have developed a blend of food extracts commonly consumed in the Mediterranean and East Asia, named blueberry punch (BBP), with the ultimate aim to formulate a chemoprevention strategy to inhibit prostate cancer progression in men on active surveillance protocol. We demonstrated previously that BBP inhibited prostate cancer cell proliferation in vitro and in vivo. The purpose of this study was to determine the molecular mechanism responsible for the suppression of prostate cancer cell proliferation by BBP. Treatment of lymph node-metastasised prostate cancer cells (LNCaP) and bone-metastasised prostate cancer cells (PC-3 and MDA-PCa-2b) with BBP (up to 0·8 %) for 72 h increased the percentage of cells at the G0/G1 phase and decreased those at the S and G2/M phases. The finding was supported by the reduction in the percentage of Ki-67-positive cells and of DNA synthesis measured by the incorporation of 5-ethynyl-2′-deoxyuridine. Concomitantly, BBP treatment decreased the protein levels of phosphorylated retinoblastoma, cyclin D1 and E, cyclin-dependent kinase (CDK) 4 and 2, and pre-replication complex (CDC6 and MCM7) in LNCaP and PC-3 cells, whereas CDK inhibitor p27 was elevated in these cell lines. In conclusion, BBP exerts its anti-proliferative effect on prostate cancer cells by modulating the expression and phosphorylation of multiple regulatory proteins essential for cell proliferation.

scholarly journals Efficacy and safety of abiraterone acetate plus prednisone in Japanese patients with newly diagnosed, metastatic hormone-naive prostate cancer: final subgroup analysis of LATITUDE, a randomized, double-blind, placebo-controlled, phase 3 study

2020 ◽  
Vol 50 (7) ◽  
pp. 810-820
Author(s):  
Hiroyoshi Suzuki ◽  
Toshitaka Shin ◽  
Satoshi Fukasawa ◽  
Katsuyoshi Hashine ◽  
Sumiko Kitani ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Overall Survival ◽  
Subgroup Analysis ◽  
Interim Analysis ◽  
Abiraterone Acetate ◽  
Newly Diagnosed ◽  
Efficacy And Safety ◽  
Phase 3 ◽  
Double Blind ◽  
Cutoff Date

Abstract Background LATITUDE was a randomized, double-blind, international and phase 3 study of abiraterone acetate plus prednisone in patients with high-risk metastatic hormone-naïve prostate cancer. In the first interim analysis of LATITUDE (clinical cutoff date: 31 October 2016), significant prolongation in overall survival and radiographic progression-free survival (co-primary endpoints) was observed when compared with placebo. The results of the Japanese subgroup analysis of LATITUDE first interim analysis were consistent with those of the overall population. In this study, overall survival and safety results from the final analysis of the Japanese subgroup of the LATITUDE study are presented (clinical cutoff date: 15 August 2018). Methods Abiraterone acetate (1000 mg/day) and prednisone (5 mg/day) were administered orally in the abiraterone acetate plus prednisone group, and matching placebos in the placebo group. Results Of the 1199 patients included in LATITUDE, 70 constituted the Japanese subgroup (abiraterone acetate plus prednisone: n = 35, placebo: n = 35). Following a median (range) follow-up of 56.6 (2.5, 64.2) months, the median overall survival was not reached in both the treatment arms of the Japanese subgroup (hazard ratio: 0.61; 95% confidence interval: 0.27–1.42; nominal P = 0.2502). A total of 23 deaths (abiraterone acetate plus prednisone: 9 [25.7%], placebo group: 14 [40.0%]) were reported in Japanese subgroup. Grade 3/4 adverse events were reported in 24 (68.6%) and 9 (25.7%) patients in the abiraterone acetate plus prednisone and placebo groups, respectively. Conclusions In this Japanese subgroup analysis, addition of abiraterone acetate plus prednisone to androgen-deprivation therapy demonstrated favorable efficacy and safety outcomes in patients with newly diagnosed, high-risk metastatic hormone-naïve prostate cancer. Survival benefits observed in the Japanese subgroup first interim analysis were sustained long-term and were consistent with the overall population.

scholarly journals Prostate cancer in East Asia: evolving trend over the last decade

2015 ◽  
Vol 17 (1) ◽  
pp. 48 ◽  
Author(s):  
Ding-Wei Ye ◽  
Yao Zhu ◽  
Hong-Kai Wang ◽  
Yuan-Yuan Qu
Keyword(s):  
Prostate Cancer ◽  
East Asia

3-D conformal radiotherapy of localized prostate cancer: A subgroup analysis of rectoscopic findings prior to radiotherapy and acute/late rectal side effects

2006 ◽  
Vol 78 (1) ◽  
pp. 36-40 ◽  
Author(s):  
Gregor Goldner ◽  
Frank Zimmermann ◽  
Horst Feldmann ◽  
Stefan Glocker ◽  
Natascha Wachter-Gerstner ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Side Effects ◽  
Subgroup Analysis ◽  
Conformal Radiotherapy ◽  
Localized Prostate Cancer

scholarly journals Clinical Significance of Retinoic Acid Receptor Beta Promoter Methylation in Prostate Cancer: A Meta-Analysis

2018 ◽  
Vol 45 (6) ◽  
pp. 2497-2505 ◽  
Author(s):  
MengMeng Dou ◽  
XueLiang Zhou ◽  
ZhiRui Fan ◽  
XianFei Ding ◽  
LiFeng Li ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Retinoic Acid ◽  
Promoter Methylation ◽  
Subgroup Analysis ◽  
Retinoic Acid Receptor ◽  
Meta Analysis ◽  
Source Region ◽  
Acid Receptor ◽  
Retinoic Acid Receptor Beta ◽  
Receptor Beta

Background/Aims: Retinoic acid receptor beta (RAR beta) is a retinoic acid receptor gene that has been shown to play key roles during multiple cancer processes, including cell proliferation, apoptosis, migration and invasion. Numerous studies have found that methylation of the RAR beta promoter contributed to the occurrence and development of malignant tumors. However, the connection between RAR beta promoter methylation and prostate cancer (PCa) remains unknown. This meta-analysis evaluated the clinical significance of RAR beta promoter methylation in PCa. Materials and Methods: We searched all published records relevant to RAR beta and PCa in a series of databases, including PubMed, Embase, Cochrane Library, ISI Web of Science and CNKI. The rates of RAR beta promoter methylation in the PCa and control groups (including benign prostatic hyperplasia and normal prostate tissues) were summarized. In addition, we evaluated the source region of available samples and the methods used to detect methylation. To compare the incidence and variation in RAR beta promoter methylation in PCa and non-PCa tissues, the odds ratio (OR) and 95% confidence interval (CI) were calculated accordingly. All the data were analyzed with the statistical software STATA 12.0. Results: Based on the inclusion and exclusion criteria, 15 articles assessing 1,339 samples were further analyzed. These data showed that the RAR beta promoter methylation rates in PCa tissues were significantly higher than the rates in the non-PCa group (OR=21.65, 95% CI: 9.27-50.57). Subgroup analysis according to the source region of samples showed that heterogeneity in Asia was small (I2=0.0%, P=0.430). Additional subgroup analysis based on the method used to detect RAR beta promoter methylation showed that the heterogeneity detected by MSP (methylation-specific PCR) was relatively small (I2=11.3%, P=0.343). Conclusion: Although studies reported different rates for RAR beta promoter methylation in PCa tissues, the total analysis demonstrated that RAR beta promoter methylation may be correlated with PCa carcinogenesis and that the RAR beta gene is particularly susceptible. Additional studies with sufficient data are essential to further evaluate the clinical features and prognostic utility of RAR beta promoter methylation in PCa.

scholarly journals Cost-Effectiveness of Genomic Test-Directed Olaparib for Metastatic Castration-Resistant Prostate Cancer

2021 ◽  
Vol 11 ◽  
Author(s):  
Dan Su ◽  
Bin Wu ◽  
Lizheng Shi
Keyword(s):  
Prostate Cancer ◽  
Sensitivity Analysis ◽  
Cost Effectiveness ◽  
Subgroup Analysis ◽  
Standard Care ◽  
Parp Inhibitor ◽  
Castration Resistant Prostate Cancer ◽  
Genomic Test ◽  
Castration Resistant ◽  
The Cost

Purpose: The effectiveness of poly (adenosine diphosphate–ribose) polymerase (PARP) inhibitor olaparib for metastatic castration-resistant prostate cancer (MCRPC) with multiple loss-of-function alterations in genes that are involved in DNA repair has been demonstrated. We aimed to evaluate the cost-effectiveness of genomic test-directed olaparib on MCRPC from the US payer perspective.Methods: A partitioned survival model was adopted to project the disease course of MCRPC had at least one gene alteration in BRCA1, BRCA2 and ATM (Scenario A) and has alterations in any of all 15 prespecified genes (Scenario B) after next-generation sequencing test. The efficacy and toxicity data were gathered from the PROfound trial. Clinical probabilities related to survival were estimated from the reported survival probabilities in each PROfound group. Cost and health preference data were derived from the literature. The incremental cost-effectiveness ratio (ICER) was measured. Subgroup analysis and sensitivity analysis were performed for exploring the model uncertainties.Results: Olaparib yielded an additional 0.063 and 0.068 of quality-adjusted life year (QALY) with the augmented cost of $7,382 and saved the cost of $ 1,980 compared to standard care in scenario A and B, respectively, which yielded an ICER of $116,903/QALY and a cost-saving option. The lower weekly cost related to olaparib treatment led to the dominant findings in scenario B. The varied results between scenario A and B could be partly explained by different the number need to screen for identifying eligible patients who could be administered with olaparib, which sharply augmented the costs of the olaparib arm in scenario A. Subgroup analysis and sensitivity analysis revealed the results were generally robust in both of two scenarios.Conclusion: The genomic test-directed olaparib is a preferred option compared with standard care strategy for men with MCRPC who had any of all 15 prespecified genes.

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