Prostate Cancer Incidence Rates Research Articles

The Impact of Inherited Genetic Variation on DNA Methylation in Prostate Cancer and Benign Tissues of African American and European American Men.

American men of African ancestry (AA) have higher prostate cancer incidence and mortality rates compared with American men of European ancestry (EA). Differences in genetic susceptibility mechanisms may contribute to this disparity. To gain insights into the regulatory mechanisms of prostate cancer susceptibility variants, we tested the association between SNPs and DNA methylation (DNAm) at nearby CpG sites across the genome in benign and cancer prostate tissue from 74 AA and 74 EA men. Genome-wide SNP data (from benign tissue) and DNAm were generated using Illumina arrays. Among AA men, we identified 6,298 and 2,641 cis-methylation QTLs (meQTL; FDR of 0.05) in benign and tumor tissue, respectively, with 6,960 and 1,700 detected in EA men. We leveraged genome-wide association study (GWAS) summary statistics to identify previously reported prostate cancer GWAS signals likely to share a common causal variant with a detected meQTL. We identified nine GWAS-meQTL pairs with strong evidence of colocalization (four in EA benign, three in EA tumor, two in AA benign, and three in AA tumor). Among these colocalized GWAS-meQTL pairs, we identified colocalizing expression quantitative trait loci (eQTL) impacting four eGenes with known roles in tumorigenesis. These findings highlight epigenetic regulatory mechanisms by which prostate cancer-risk SNPs can modify local DNAm and/or gene expression in prostate tissue. Overall, our findings showed general consistency in the meQTL landscape of AA and EA men, but meQTLs often differ by tissue type (normal vs. cancer). Ancestry-based linkage disequilibrium differences and lack of AA representation in GWAS decrease statistical power to detect colocalization for some regions.

Prostate cancer among Saudis: a registry review.

Policy makers in Saudi Arabia greatly rely on published studies to make major public health decisions. Prostate cancer (PCa) studies in Saudi Arabia are either outdated or limited to local regions. The authors aim to analyze the Saudi Cancer Registry to determine the incidence of PCa across all regions of the Kingdom and the risk factors of poor prognosis in the population. Patients diagnosed with primary PCa from 1 January 2008 to 31 December 2017 were included in the study from the Saudi Cancer Registry. Incidence rates and risk factors for poor survival were calculated. A total of 3607 PCa patients were retrieved. PCa incidence rates ranged from 0.2 to 1.4 per 100000. Most of the patients were aged 60 and older (86.5%; n=3120), married (97%; n=3497) and lived in the central region (38.1%; n=1375). The mean age at diagnosis was 71.1 (10.8) years. Over half of all tumors were poorly differentiated (64.2%; n=2317), and localized (60.4%; n=2180). The all-time metastasis rate reached 31.4% (n=1131). The lowest mean survival was in those with distant metastasis (P=0.039). Age groups, marital status, tumor morphology, place of residency, and grade were not proven to significantly influence survival. The high metastasis rate and evidence of a greater incidence of newly diagnosed metastatic PCa indicate that the idea of select screening for certain high-risk populations is not farfetched. The authors encourage the promotion of awareness regarding PCa risk factors and screening to optimize prognosis and minimize late presentations and high metastasis rates.

The Impact of Nutrient Supply on Prostate Cancer Risk Worldwide.

We aim to explore the association between nutrient supply and the incidence of prostate cancer globally. We utilized national nutrient supply data from the Food and Agriculture Organization of the United Nations for 150 countries, including the average supply of total protein (APS), animal protein (AAPS), fat (AFS), animal protein/total protein ratio (ATR), and share of dietary energy supply derived from cereals, roots, and tubers (CR). Prostate cancer incidence data were sourced from the Global Burden Disease 2019 (GBD2019). Correlation, regression analyses, and subgroup analysis were conducted. Our findings imply that incidence of prostate cancer is significantly correlated to APS (ρ = 0.394, p < 0.01), AAPS (ρ = 0.560, p < 0.01), AFS (ρ = 0.522, p < 0.01), ATR (ρ = 0.592, p < 0.01), and CR (ρ = -0.667, p < 0.01). After adjusting for confounders, regression analysis showed linear relationships between the AAPS (β = 0.605, p = 0.006), ATR (β = 70.76, p = 0.005), CR (β = -1.4451, p < 0.01), and age-standardized incidence rates (ASIRs) of prostate cancer, while no association was observed with APS (β = 0.030, p = 0.483) or AFS (β = 0.237, p = 0.405). Subgroup analysis suggested that dietary supply indicators were associated with ASIR in middle, middle-high, and high SDI, but not in countries with low and middle-low SDI. In summary, prostate cancer rates globally correlate significantly with AAPS, ATR, and CR, but not with APS and AFS. When considering the SDI of countries, the relationship is generally more pronounced in economically advanced nations, but not evident in low and middle-low SDI countries.

Diabetes mellitus and prostate cancer risk: A mendelian randomization analysis.

Some studies have directed towards an association between diabetes mellitus (DM) and prostate cancer (PCa); however, this specific relationship remains inconclusive. In recent years, Mendelian randomization (MR) has become a widely used analytical method for inferring epidemiological causes. To investigated the potential relationship between DM and PCa using MR. We downloaded relevant data on "diabetes" and "PCa" from the IEU OpenGWAS project database, performed three different methods to conduct MR, and carried out sensitivity analysis for verification. The results indicated that DM was an independent risk factor for PCa. The odds ratio (OR) values obtained using the inverse variance weighted method in this study were as follows: OR = 1.018 (95% confidence interval: 1.004-1.032), P = 0.014. We found that DM could increase the incidence rate of PCa.

Trends in Incidence of Prostate Cancer in Iran and Its 31 Provinces During 2003 - 2016

Background: Prostate cancer is the most common malignancy in men, which is the second leading cause of cancer-related death. The prevalence of prostate cancer in Iran is lower than in Western and European countries. Objectives: Our study presents an updated incidence rate of prostate cancer in Iran and its provinces, displays its trends, and adds its spatial distribution to the literature. Methods: We investigate the age-standardized incidence rates (ASIRs) per annum of prostate cancer from 2003 to 2016 in Iran, using the data of the cancer registration available by the Ministry of Health and Medical Education. Crude incidence rates were calculated by dividing incident cases by the population of the whole country and each province which was available on the website of Iran Statistic Center. Age standardization was done by the World Health Organization (WHO) standard population and presented according to age and province. Results: The crude number of incident prostate cancer cases in Iran was 49 188 between 2003 and 2016. Age-standardized incidence rate of prostate cancer showed an increasing trend from 4.46 in 2003 to 18.44 per 100 000 in 2016. Mazandaran (29.57 per 100 000 in 2008) and Esfahan (27.5 per 100 000 in 2016 and 26.51 per 100 000 in 2015) were provinces with the highest reported ASIRs, while Sistan and Baluchestan province had the lowest mean of ASIR (1.59 per 100 000) in the period of the study. Conclusions: The incidence of prostate cancer displays an increase of more than 4 times at the end of the study period. However, the increase in coverage of data recording and greater access to diagnostic tests during these years are effective in the reported ASIRS, but the steep slope in the incidence trend of prostate cancer compared to other cancers in Iran shows its capacity to become one of the health problems that underscore the necessity of implementation of control and prevention programs, especially in high-incidence provinces.

Abstract C066: The SC AMEN Program for Black men: Providing education and navigation to prostate cancer screening with informed decision-making

Abstract Purpose: Prostate cancer is the most common type of cancer and the second highest cause of cancer death in the United States (U.S). The prostate cancer incidence and death rates in the U.S. are twice as high among Black men vs White men. To address this issue, the Medical University of South Carolina Hollings Cancer Center (MUSC HCC) developed the South Carolina Prostate Cancer Education and Navigation to Screening Program for African American Men (SC AMEN Program). This new program provides prostate cancer information and includes patient navigators who help to overcome the social determinants of health barriers (e.g., lack of transportation, lack of a primary care provider, co-pays) that could prevent Black men from receiving prostate cancer screening. The navigators guide the participants to a physician for an informed decision-making discussion related to prostate cancer screening. Methods: The SC AMEN Program includes a one-hour evidence-based prostate cancer educational session that is delivered to each enrolled participant. The pre-test survey assesses prostate cancer knowledge using the validated PROCASE scale. The survey is administered again at post-test, following the educational session. Each participant is then navigated to a physician to discuss prostate cancer screening over the next three months. The navigation intervention is modeled after the National Cancer Institute’s patient navigation training modules, which integrate adult learning theory, social cognitive theory, and social support theory into the intervention. Results: Among the 122 study participants, 2.8% reported having Hispanic/American Indian ethnicity. The age range of the 122 participants was 40-69 years old; 5.7% had less than a high school education, 26.2% stopped education after high school, 18.9% completed high school and some college, and 49.2% were college graduates/had completed a postgraduate degree. In terms of health insurance coverage, only 45.1% of participants had current or former employer or labor union insurance coverage. The other participants had a mix of Medicare, military, and private insurance coverage. Eighty-seven percent of the participants had an identified primary care physician, while 9.8% did not. 87.7% of participants have primary care and 9.8% of participants did not. The total average pretest score was 6.5/10 with a standard deviation of 1.7. The total average post-test score was 7.2/10 with a standard deviation of 1.5. The total point increase from pretest to post-test was 0.7. Across all study sites, the change in prostate cancer knowledge results from pre-test to post-test was statistically significant (p&amp;lt;0.001). Ninety-three percent of the participants in this ongoing study have received prostate cancer screening or have made a screening appointment. Conclusion: The SC AMEN Program appears to be successful in increasing the study participants’ knowledge of prostate cancer and informed decision making for prostate cancer screening. Citation Format: Marvella E. Ford, Melanie Slan, Angel M. Malek, Claudia Lawton, Lee Moultrie, Adam Pressley, Ellen Gomez, Jessica Zserai, Joan McLauren, Mina Platt, Nhi Phuong Le, Chloe Keeve, Joie Zabec, Marla Sagatelian, Nicholas Shungu. The SC AMEN Program for Black men: Providing education and navigation to prostate cancer screening with informed decision-making [abstract]. In: Proceedings of the 16th AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2023 Sep 29-Oct 2;Orlando, FL. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2023;32(12 Suppl):Abstract nr C066.

Incidence trends in prostate cancer among men in the United States from 2000 to 2020 by race and ethnicity, age and tumor stage.

To explore whether prostate cancer incidence trends from 2000 to 2020 in the United States differed by race and ethnicity, age and tumor stage; to explore racial differences in prostate cancer incidence change due to the impact of COVID-19 pandemic lockdown in 2020; and to determine if there is any high-risk population that can be targeted for prevention. We identified 1,098,349 men who were diagnosed with incident prostate cancer at age ≥20 in 2000-2020 in 17 registries of the Surveillance, Epidemiology, and End Results (SEER) program in the United States; of whom, 778,437 were non-Hispanic whites, 155,111 non-Hispanic blacks, 4,200 American Indians and Alaska Natives (AIAN), 55,267 non-Hispanic Asians/Pacific Islanders, and 105,334 Hispanics. Age-adjusted incidence rate of prostate cancer was the highest in blacks (302.6 cases per 100,000 men), followed by whites (186.6), Hispanics (153.2), AIAN (108.5), and Asians (104.9). Age-adjusted prostate cancer incidence rates dramatically decreased from 2000 to 2013 for all ethnic men. However, age-adjusted prostate cancer incidence rates increased from 2014 to 2020, in which the increasing incidence trend looked sharper in blacks and whites, flatter in Asians, and leveled in AIAN and Hispanics. Among men with local or regional stages across all years, prostate cancer incidence rate was significantly higher in blacks, but significantly lower in Hispanics, AIAN, and Asians as compared to whites. Among men in 2007-2013, the risk of distant stage prostate cancer was statistically significantly elevated in blacks (rate-ratio: 2.22, 95% CI: 2.06-2.38) and Hispanics (1.16, 1.06-1.25), not significantly different in AIAN (1.30, 0.92-1.76), but still significantly lower in Asians (0.73, 0.66-0.82) as compared to whites. There was a drop of prostate cancer incidence from 2019 to 2020 likely due to the impact of COVID-19 pandemic lockdown on the access to medical care in 2020. Overall prostate cancer incidence rate decreased by 40.4 cases per 100,000 population from 277.4 in 2019 to 237.0 in 2020 for blacks, 20.9 from 164.2 to 143.3 for whites, 16.8 from 124.8 to 108.0 for Hispanics, 14.9 from 101.7 to 86.8 for AIAN, and 12.6 from 88.4 to 75.8 for Asians. The decreasing trend of prostate cancer incidence from 2000 to 2013 was statistically significant for all ethnic men. There was an increasing prostate cancer incidence from 2014 to 2020. Age-adjusted incidence rate of prostate cancer was the highest in blacks, followed by whites, Hispanics, AIAN, and Asians, regardless of age groups, tumor stages, and time periods. There will also be a need to monitor and investigate the prostate cancer incidence trend during and after COVID-19 pandemic season.

Incidence and risk factors of prostate cancer among the Northern and Eastern parts of the United Arab Emirates population.

Prostate cancer (PCa) is a prevalent disease worldwide. However, the incidence and patient-specific risk factors of PCa in the Middle East, specifically in the United Arab Emirates,have not been previously reported. We conducted a retrospective cohort study on 2377 men diagnosed with either benign prostatic hyperplasia (BPH) or PCa in the Northern and Eastern regions of the United Arab Emirates, excluding the Western part, which includes Abu Dhabi. The study spanned from January 2012 and December 2021. To calculate the PCa incidence rate, we utilized the world age-standardized incidence rates (W-ASIR) categorized by age groups. Patient-specific risk factors of PCa were identified through a multivariate logistic regression analysis of clinical data. A total of 247 cases of PCa and 2130 cases of BPH were included in the study. In our cohort, the W-ASIR for PCa was 21.3 per 100,000 men. The incidence of PCa showed an increasing trend with age, with the highest incidence observed among men aged 70 years and older. Accordingly, multivariate analysis revealed that age over 70 was associated with an increased risk of PCa (OR: 2.546, 95% confidence interval [CI]: 1.892-3.425, p < 0.01). On the other hand, preexisting conditions such as hypertensionand diabetes mellituswere found to lower the risk of PCa (OR: 0.222, 95% CI: 0.163-0.302, p < 0.001) and (OR: 0.364, 95% CI: 0.205-0.648, p < 0.001), respectively. Additionally, metformin intake was associated with a reduced risk of PCa (OR: 0.385, 95% CI: 0.190-0.782, p = 0.008); while insulin usage increased the risk of PCa (OR: 2.586, 95% CI: 1.539-4.344, p < 0.001). Anti-BPH medications such as phosphodiesteraseinhibitors (OR: 0.223, 95% CI: 0.069-0.723, p = 0.012) or 5-α reductase (OR: 0.206, 95% CI: 0.110-0.389, p < 0.000), were found to lower the risk of PCa. The findings underscore the high incidence of PCa in the United Arab Emirates, with age being a significant factor. Furthermore, the study highlights the influence of certain comorbidities and medications on the risk of developing PCa within the United Arab Emiratespopulation.

Burden of prostate cancer in the Middle East: A comparative analysis based on global cancer observatory data.

Prostate cancer represents a significant global health issue, yet our understanding of its impact in the Middle East remains limited. This study aimed to assess the incidence and mortality of prostate cancer in the Middle East, and compare these rates to those in Europe and North America. We utilized the 2020 Global Cancer Observatory data, compiling incidence and mortality rates of prostate cancer in 20 Middle Eastern countries. We calculated mortality-to-incidence ratios (MIR) and compared the age-standardized incidence rate (ASIR) and MIR between the Middle East and the combined regions of North America and Europe. The countries were further stratified based on the Human Development Index (HDI) and income level for additional analysis. In 2020, the Middle East documented an estimated 51,649 new prostate cancer diagnoses, accounting for 3.7% of global cases. Despite a significantly lower ASIR in the Middle East compared with Europe and North America (10.50 vs. 21.50, p = 0.0087), the region had a higher MIR (12.35 vs. 3.00, p = 0.0476). When stratified based on HDI or income levels, there was no significant difference in MIRs; however, a significant trend of increasing MIR with decreasing HDI (p = 0.028) and income levels (p = 0.016) was observed. Despite a lower incidence, our analysis showed a significantly higher MIR for prostate cancer in the Middle East compared with Europe and North America. These findings underscore the unique challenges posed by prostate cancer in the Middle East and emphasize the necessity of tailored strategies to address this pressing public health issue.

Prevalence and predictors of survival among patients with prostate cancer attending Nyeri County and referral hospital, Kenya: a review of records 2017-2022

Background: Prostate cancer is a significant health concern globally. The incidence rate of prostate cancer (PCa) has continued to rise in Kenya. This study aimed to investigate the prevalence of prostate cancer in patients attending Nyeri County and referral hospital in Kenya, identify predictors of survival, and assess the impact of treatment modalities on survival outcomes. Methods: A retrospective observational design was employed, analyzing data from 252 patient records documented between 2017 and 2022. Demographic characteristics, clinical features, treatment modalities, and survival outcomes were extracted and analyzed. Results: The prevalence of prostate cancer among the study population was found to be 10.84%. The majority of patients diagnosed with prostate cancer were aged 70 years or older, with none below 40 years. Most patients were residents of Nyeri County, and some came from neighboring counties in central Kenya. The overall survival rate for prostate cancer patients was 64.29%, indicating that 35.71% of patients died during the study period. Advanced age, comorbidities, and late-stage diagnosis were associated with lower survival rates. Multivariate analysis revealed that prostate cancer cases with hypertension were 2.91 times more likely to die compared to those without comorbidities (p=0.01, CI: 1.285051-6.597691). Conclusions: The study highlights a significant prevalence of prostate cancer in the region and emphasizes the need for enhanced management strategies. Early detection programs, tailored treatment approaches considering comorbidities, and improved access to healthcare services are recommended to enhance survival rates and overall management of prostate cancer in this population.

The heterogeneity and clonal evolution analysis of the advanced prostate cancer with castration resistance

BackgroundNowadays, the incidence rate of advanced and metastatic prostate cancer at the first time of diagnosis grows higher in China yearly. At present, androgen deprivation therapy (ADT) is the primary treatment of advanced prostate cancer. However, after several years of ADT, most patients will ultimately progress to castration-resistant prostate cancer (CRPC). Previous studies mainly focus on Caucasian and very few on East Asian patients.MethodsIn this study, the pre- and post-ADT tumor samples were collected from five Chinese patients with advanced prostate cancer. The whole-exome sequencing, tumor heterogeneity, and clonal evolution pattern were analyzed.ResultsThe results showed that the gene mutation pattern and heterogeneity changed significantly after androgen deprivation therapy. Tumor Mutational Burden (TMB) and Copy Number Alteration (CNA) were substantially reduced in the post-treatment group, but the Mutant-allele tumor heterogeneity (MATH), Socio-Demographic Index (SDI), Intratumor heterogeneity (ITH), and weighted Genome Instability Index (wGII) had no significant difference. According to the clone types and characteristics, the presence of main clones in five pre-and post-treatment samples, the clonal evolution pattern can be further classified into two sub-groups (the Homogeneous origin clonal model or the Heterogeneous origin clonal model). The Progression-free survival (PFS) of the patients with the “Homogeneous origin clonal model” was shorter than the “Heterogeneous origin clonal model”. The longer PFS might relate to MUC7 and MUC5B mutations repaired. ZNF91 mutation might be responsible for resistance to ADT resistance.ConclusionOur findings revealed potential genetic regulators to predict the castration resistance and provide insights into the castration resistance processes in advanced prostate cancer. The crosstalk between clonal evolution patterns and tumor microenvironment may also play a role in castration resistance. A multicenter-research including larger populations with different background are needed to confirm our conclusion in the future.

Influence of demographic change on the demand for radiotherapy using forecasted predictions for prostate cancer in Germany

PurposeDemographic change will lead to an increase in age-associated cancers. The demand for primary treatment, especially oncologic therapies, is difficult to predict. This work is an attempt to project the demand for radiation therapy (RT) in 2030, taking into account demographic changes using prostate cancer (PC) as an example.Materials and methodsUsing the GENESIS database of the Federal Statistical Office, we retrieved demographic population projections for 2030 and retrospective demographic surveys from 1999 to 2019. Additionally, we queried incidence rates for PC in the respective age groups of 50–54, 55–59, 60–64, 65–69, 70–74, 75–79, 80–84, and +85 years from 1999–2019 via the Federal Cancer Registry of the Robert Koch Institute. We used a regression method to determine the age-dependent correlation between the incidence of PC and the population size of the respective age group by combining the data from 1999 to 2019. This information was used to calculate the incidence rates in the age groups of the expected population for 2030 and the expected new cases of PC in 2030. Finally, we extrapolated the indications for the demand for RT based on data from the Report on Cancer Incidence in Germany from 2016.ResultsConsidering a population-dependent incidence rate, an increase in new cases of PC is expected. This increase is particularly evident in the age groups of 70–74 and 80–84 years. With regards to RT, the estimate indicates an overall increase of 27.4% in demand. There is also a shift in RT demands towards older patients, especially in the 80- to 84-year-old age group.ConclusionWe observe an age-associated increase in primary cases of PC. This is likely to result in an increased demand for RT. The exact demand cannot be predicted. However, trends can be estimated to plan for the demand. This, though, requires a good database from cancer registries.

Impact of Physical Activity on Prostate Cancer Incidence

Prostate cancer is a leading cancer in men, with its incidence varying among different countries and ethnic groups. The introduction of serum prostate-specific antigen (PSA) testing has led to increased early detection rates, particularly in high Human Development Index (HDI) countries. Several extrinsic or modifiable factors have been implicated in the development of prostate cancer. Diet, including high meat and dairy consumption, alcohol intake, and dietary supplements, has shown inconsistent associations. Obesity has emerged as a significant risk factor for prostate cancer and can worsen prognosis and treatment outcomes. Conversely, consumption of fish and fish oil has been associated with a lower incidence and mortality rate of prostate cancer.&#x0D; The relationship between physical activity and prostate cancer risk has been extensively studied, yielding mixed results. While physical activity has consistently shown protective effects against other cancers, its association with prostate cancer risk is less clear. Some studies suggest a potential benefit, particularly with vigorous physical activity, while others find no significant association. However, physical activity has demonstrated positive effects on survival rates and disease progression among men already diagnosed with prostate cancer.

Five-alpha reductase inhibitors and risk of prostate cancer among men with benign prostatic hyperplasia: A historical cohort study using primary care data

Background: Five-alpha reductase inhibitors (5ARIs) are used in the management of benign prostatic hyperplasia (BPH). 5ARIs prevent the conversion of testosterone to dihydrotestosterone, which is important in prostate development. It has been suggested that 5ARIs can be used a chemopreventative agent for prostate cancer. The aim of this study was to assess the risk of prostate cancer associated with 5ARI use among men with BPH. Methods: Using Clinical Practice Research Datalink (CPRD) from 1992 to 2011 in UK, prostate cancer risk was retrospectively compared in men with a new diagnosis of BPH, with no history of prostate cancer who were treated with 5ARIs, to men treated with alpha blockers (ABs) and those given no pharmacological treatment. Incidence rate of prostate cancer was calculated by treatment group; the association between BPH treatment group and prostate cancer was estimated by a multivariate Cox model. Results: 77,494 men with newly diagnosed BPH were included. The crude incidence rate of prostate cancer was 892.4 cases per 100,000 person-years amongst those treated with 5ARIs, compared with 1209.0 and 1542.9 in those treated with ABs and untreated individuals, respectively. The HR adjusted for potential confounders was 0.79 (0.72-0.86) for 5ARI vs ABs and 0.72 (0.66-0.79) for 5ARI vs untreated. After excluding the first year after BPH diagnosis, adjusted HRs attenuated to 0.87 (0.79-0.97) for 5ARI vs ABs and 0.97 (0.87-1.08) for 5ARI vs untreated. Conclusion: Among men diagnosed with BPH, we found evidence of lower risks of subsequent prostate cancer in those treated with 5ARIs, but this appeared to be driven by cases diagnosed within a year of BPH, possibly reflecting prevalent prostate cancers that were initially misdiagnosed. After excluding the first year after BPH diagnosis, there was little evidence of a reduced prostate cancer risk in those taking 5ARIs.

Global trends in incidence, death, burden and risk factors of early-onset cancer from 1990 to 2019

ObjectiveThis study aimed to explore the global burden of early-onset cancer based on the Global Burden of Disease (GBD) 2019 study for 29 cancers worldwid.Methods and analysisIncidence, deaths, disability-adjusted life...

Association of Non-Genetic Risk Factors with Prostate Cancer in the Population of Jammu Region of J and K, India

ABSTRACT: The rising incidence rates of prostate cancer (CAP) have become a global health disorder. It has a complex etiology and includes both potentially modifiable environmental factors and non-modifiable genetic components. In this study, we aimed to identify the potential and significant non-genetic risk factors associated with CAP in the population of Jammu and Kashmir. A total of 320 study subjects (120 clinically confirmed CAP patients and 200 healthy age-matched unrelated participants) were registered for this investigation after obtaining their prior consent. A predesigned health questionnaire and hospital-based patient history were used to collect data pertaining to clinical variables, sociodemographic characteristics, anthropometric parameters, and biochemical indices. The result revealed that diet patterns (non-vegetarianism, p=0.01), lack of physical activity (p=0.0007), dwelling (urban residents, p=0.0105), higher levels of serum LDL-cholesterol (p=&lt;0.0001), triglyceride (p=0.01), VLDL-cholesterol (p=0.02), total cholesterol (p=0.0527), creatinine (p=0.0006), sodium (p=0.0429), urea (p=0.0006), and PSA (p=&lt;0.0001) were significantly associated with CAP. Moreover, higher mean age (69.82±15.5), the extent/duration of diabetes mellitus (DM) (p=0.0007), lack of physical activity (p=0.0007), high intake of red meat (p=0.0005), LDL-Cholesterol (p=&lt;0.0001) and positive family history (p=&lt;0.0001) were found to be the most significant risk factors for CAP. The study notably identified the most significant and novel (extent/duration of diabetes and serum levels of LDL, VLDL) non-genetic risk factors associated with prostate cancer in the population of the Jammu region thus helping to target the high-risk populations and informing preventive interventions.

Prostate cancer risk prediction based on clinical factors and prostate-specific antigen

IntroductionThe incidence rate of prostate cancer (PCa) has continued to rise in Korea. This study aimed to construct and evaluate a 5-year PCa risk prediction model using a cohort with PSA < 10 ng/mL by incorporating PSA levels and individual factors.MethodsThe PCa risk prediction model including PSA levels and individual risk factors was constructed using a cohort of 69,319 participants from the Kangbuk Samsung Health Study. 201 registered PCa incidences were observed. A Cox proportional hazards regression model was used to generate the 5-year risk of PCa. The performance of the model was assessed using standards of discrimination and calibration.ResultsThe risk prediction model included age, smoking status, alcohol consumption, family history of PCa, past medical history of dyslipidemia, cholesterol levels, and PSA level. Especially, an elevated PSA level was a significant risk factor of PCa (hazard ratio [HR]: 1.77, 95% confidence interval [CI]: [1.67–1.88]). This model performed well with sufficient discrimination ability and satisfactory calibration (C-statistic: 0.911, 0.874; Nam-D’Agostino test statistic:19.76, 4.21 in the development and validation cohort, respectively).ConclusionsOur risk prediction model was effective in predicting PCa in a population according to PSA levels. When PSA levels are inconclusive, an assessment of both PSA and specific individual risk factors (e.g., age, total cholesterol, and family history of PCa) could provide further information in predicting PCa.

Abstract A064: Prediction of positive prostate biopsy is significantly improved in Black and Hispanic men when serum PVT1 exon 9 copy number is combined with serum prostate specific antigen

Abstract Background Men of African ancestry (moAA) experience the highest incidence and mortality rates of prostate Cancer (PCa) in the United States, where 1 in 8 men are expected to be diagnosed with the disease in their lifetime. Yet, most biomarkers used in PCa screening today, which are based on prostate specific antigen (PSA), are developed and validated in predominantly White populations with weak or nonexistent validation in moAA, making moAA more likely to be subjected to unnecessary prostate biopsies. To reduce this disparity in PCa detection and management, there is a critical need for new biomarkers that target the unique genetic make-up of moAA. We recently showed that plasmacytoma variant translocation 1 (PVT1), exons 4A, 4B, and 9 are overexpressed in the prostate tissues and detected in higher copy numbers in serum of moAA with PCa. In this study, we investigated the predictive power of these potential biomarkers in detecting PCa across different racial populations. Methodology Forty serum samples from White, Hispanic, and Black men, 50 percent of whom had PCa, were analyzed to obtain copy numbers for PVT1 exons 4A, 4B, and 9. Seven logistic regression models were developed to predict PCa using single biomarkers, all pairwise combinations of biomarkers and all three biomarkers. The median area under the receiver operator characteristic curve (AUC) was used to measure the predictive accuracy of each model after a repeated, stratified k-fold cross validation. Model accuracy was first evaluated using data from all races and then for just the Black and Hispanic subpopulation. Our best performing models were compared with PSA as a predictor of PCa. We also evaluated the predictive accuracy of composite models that combined our biomarkers with PSA. Results In predicting PCa for all races, our model with only PVT1 exon 9 achieved the highest median AUC of 0.71, which was better than the AUC of 0.63 obtained with just PSA. When PSA and PVT1 exon 9 were combined, the median AUC increased to 0.75. Combining all three biomarkers with PSA increased the median AUC to 0.813. For the Black and Hispanic subpopulation, PVT1 exon 9 achieved the highest AUC of 0.92 which was significantly higher than the median AUC of 0.63 achieved with PSA. No significant change in AUC was observed when the PVT1 biomarkers were combined with PSA. Conclusion Our results show that PVT1 exon 9 is more accurate than PSA in predicting PCa, achieving near perfect accuracy within the Black and Hispanic subpopulation. Whereas combining PSA with PVT1 biomarkers improved the performance of PSA for all races, no significant improvement in PSA’s performance was observed in Black and Hispanic subpopulations. Thus, PVT1 exon 9 may hold the key to reducing disparity in PCa detection among moAA while improving the predictive accuracy of PSA for the general population Citation Format: Emmanuel Owusu Asante-Asamani, Dinuka Sewandi De Silva, Gargi Pal, Michael Liss, Robin Leach, Olorunseun Ogunwobi. Prediction of positive prostate biopsy is significantly improved in Black and Hispanic men when serum PVT1 exon 9 copy number is combined with serum prostate specific antigen [abstract]. In: Proceedings of the AACR Special Conference: Advances in Prostate Cancer Research; 2023 Mar 15-18; Denver, Colorado. Philadelphia (PA): AACR; Cancer Res 2023;83(11 Suppl):Abstract nr A064.

Abstract A065: Serum PVT1 exons 4A and 4B copy numbers are better predictors of high-grade prostate cancer in Black and Hispanic men than serum prostate specific antigen

Abstract Background Men of African ancestry (moAA) experience the highest incidence and mortality rates of prostate Cancer (PCa) in the United States, where 1 in 8 men are expected to be diagnosed with the disease in their lifetime. Yet, most biomarkers used in PCa screening today, which are based on prostate specific antigen (PSA), are developed and validated in predominantly White populations with weak or nonexistent validation in moAA, making moAA more likely to be subjected to unnecessary prostate biopsies. To reduce this disparity in PCa detection and management, there is a critical need for new biomarkers with demonstrated usefulness in moAA. We recently showed that plasmacytoma variant translocation 1 (PVT1), exons 4A, 4B, and 9 are overexpressed in the prostate tissues and detected in higher copy numbers in serum of moAA with PCa. In this study, we investigated the predictive power of these potential biomarkers in detecting high-grade PCa across different racial populations. Methodology Forty serum samples from White, Hispanic, and Black men, 50% of whom had PCa with 25% showing high-grade PCa, were analyzed to obtain copy numbers for PVT1 exons 4A, 4B, and 9. Seven logistic regression models were developed to predict PCa using individual PTV1 biomarkers, all pairwise combinations of biomarkers and all three biomarkers. The median area under the receiver operator characteristic curve (AUC) was used to measure the predictive accuracy of each model after a repeated, stratified k-fold cross validation. Model accuracy was first evaluated using data from all races and then for just the Black and Hispanic subpopulation. Our best performing models were compared with PSA as a predictor of PCa. We also evaluated the predictive accuracy of composite models that combined our biomarkers with PSA. Results In predicting high-grade PCa for all races, PSA had a median AUC of 0.58. All our PVT1 biomarkers had an AUC greater than 0.64, which was better than PSA. When PSA and PVT1 exon 4B were combined, the median AUC of PSA increased to 0.67, other PTV1 biomarkers did not improve the AUC of PSA. For the Black and Hispanic subpopulation, PVT1 exon 4A achieved the highest median AUC of 0.92 which was significantly higher than the median AUC of 0.33 achieved with PSA. The model with Exon 4A and Exon 4B as well as all three biomarkers achieved perfect discrimination (AUC of 1.0). We were also able to obtain perfect discrimination when PVT1 exon 4A was combined with PSA (AUC: 1.0). Conclusion Our results show that PVT1 exon 4A is more accurate than PSA in predicting high-grade PCa in Black and Hispanic subpopulations, achieving perfect discrimination when combined with PSA. Significant improvement in PSA’s predictability is observed in all races when combined with PTV1 exon 4B. Thus, PVT1 exon 4A and PVT1 exon 4B may hold the key to reducing disparity in high-grade PCa detection among moAA while improving the predictive accuracy of PSA for the general population. Citation Format: Emmanuel Owusu Asante-Asamani, Dinuka S.H. Sewandi De Silva, Gargi Pal, Michael Liss, Robin Leach, Olorunseun O. Ogunwobi. Serum PVT1 exons 4A and 4B copy numbers are better predictors of high-grade prostate cancer in Black and Hispanic men than serum prostate specific antigen [abstract]. In: Proceedings of the AACR Special Conference: Advances in Prostate Cancer Research; 2023 Mar 15-18; Denver, Colorado. Philadelphia (PA): AACR; Cancer Res 2023;83(11 Suppl):Abstract nr A065.

Exercise to enhance cardiovascular health among Black patients with prostate cancer with androgen deprivation therapy: The POWER trial.

TPS5120 Background: Large racial disparities persist in prostate cancer (PCa) incidence and mortality in the US. Among all races, Black men have the highest rates of PCa incidence and mortality, where they are 1.7 and 2.1 times more likely to develop and die of PCa compared to non-Hispanic White men, respectively. Androgen deprivation therapy (ADT) is one of the most recommended treatments for intermediate and advanced PCa. However, men receiving ADT have a higher risk of developing cardiovascular disease (CVD) by 65% compared to patients not receiving ADT, which is likely linked to ADT-induced cardiovascular and metabolic toxicity. Moreover, Black men with PCa receiving ADT have a higher risk of CVD-related death and a higher prevalence of comorbid conditions. Therefore, prevention and management of CVD risk factors in this population is an important unmet clinical need. Exercise is an effective way to lower CVD risk factors in many clinical settings; however, Black men with cancer are underrepresented in exercise oncology research, and no studies to date have focused on Black men with PCa on ADT. We designed a randomized controlled trial, entitled “Exercise to Enhance Cardiovascular Health among Black Prostate Cancer Patients with Androgen Deprivation Therapy: POWER Trial.” The objective of the POWER Trial is to examine the effects of a tailored exercise intervention on CVD risk factors in Black men with PCa undergoing ADT. Methods: The POWER trial is a two-arm, multi-center, randomized controlled trial, recruiting 62 Black men with localized or metastatic PCa who are receiving ADT at Dana-Farber Cancer Institute or Beth Israel Deaconess Medical Center, Boston, MA. Participants are randomly assigned to either exercise training or usual care at a 1:1 ratio. Participants in the intervention group are asked to complete a culturally tailored, home-based, virtually supervised exercise training program thrice weekly for 16 weeks. Aerobic exercise is high-intensity interval training and performed on a stationary bike, alternating 1-min high-intensity (75-95% of VO2peak) and 1-min recovery (40% of VO2peak) intervals. Resistance exercises are performed on large muscle groups using dumbbells with 2-3 sets of 15-20 repetitions at 60-75% of the 1-repetition maximum. Participants in the usual care group are asked not to change their baseline exercise behavior and then may cross over to the exercise program after the initial 16 weeks. The primary outcome is the CVD risk assessed by the Framingham Risk Score (i.e., age, sex, blood cholesterol, blood pressure, and smoking). The secondary and exploratory outcomes include cardiorespiratory fitness, muscular strength, body composition, patient-reported outcomes, and treatment-related symptoms. To date, five out of the planned 62 patients have been enrolled. This trial is registered in clinicaltrials.gov (NCT05327465). Clinical trial information: NCT05327465 .