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Showing 251 - 3002017 GU Cancers Symposium: Blood Test Uncovers Potential New Treatment Targets in Advanced Prostate Cancer
Analysis of free-floating cancer DNA from blood samples has yielded leads for new prostate cancer treatment targets. Using a commercially available “liquid biopsy” test in patients with advanced prostate cancer, researchers found a number of genetic changes in cell-free, circulating...
Researchers Identify ‘Synthetic Essentiality’ as Novel Approach for Locating Cancer Therapy Targets
A new method has been found for identifying therapeutic targets in cancers lacking specific key tumor suppressor genes. The process, which located a genetic site for the most common form of prostate cancer, has potential for developing precision therapy for other cancers, such as breast, brain, and ...
Low Prostate Cancer–Specific Mortality in Men With Benign Initial Transrectal Ultrasound–Guided Biopsy Sets
In a Danish study reported in The Lancet Oncology, Klemann et al found a low risk of prostate cancer–specific mortality in men with benign initial transrectal ultrasound-guided biopsy sets. The risk was particularly low among those with lower prostate-specific antigen (PSA) levels. Study...
Adding Antiandrogen Therapy to Radiation Therapy in Recurrent Prostate Cancer
As reported in The New England Journal of Medicine by Shipley et al in the NRG Oncology Radiation Therapy Oncology Group (RTOG), the final analysis of the phase III RTOG 9601 trial showed that the addition of antiandrogen therapy with bicalutamide to radiation therapy significantly improves overall ...
Benefits of Multiparametric Magnetic Resonance Imaging in Clinically Significant Prostate Cancer
In the UK PROMIS study reported in The Lancet, Ahmed et al found that use of multiparametric magnetic resonance imaging (MP-MRI) might reduce the need for transrectal ultrasound (TRUS)-guided prostate biopsy and may improve detection of clinically significant prostate cancer. Study Details In the ...
Potential Surrogate for All-Cause Mortality Risk in Localized Unfavorable-Risk Prostate Cancer
In a study reported in JAMA Oncology, Royce et al found that a prostate-specific antigen (PSA) nadir > 0.5 ng/mL may be a dominant risk factor for all-cause mortality after radiation therapy and androgen-deprivation therapy in men with localized unfavorable-risk prostate cancer. Study Details...
Validation of the Five-Tiered Gleason Grade Grouping System in Patients With Prostate Cancer
Scientists have been able to validate the recently proposed five-tiered system of Gleason grade grouping using population-based data. The study, led by Grace Lu-Yao, PhD, MPH, Associate Director for Population Science at the Sidney Kimmel Cancer Center at Thomas Jefferson University and Vice...
Prostate Cancer Treatment Rates Drop, Reflecting Change in Screening Recommendations
As some national guidelines now recommend against routine prostate cancer screening, the overall rate of men receiving treatment for the disease declined 42% between 2007 and 2012, a new study published by Borza et al in Health Affairs found. The decline reflects efforts to decrease overdiagnosis...
Vascular-Targeted Photodynamic Therapy Shows Promise in Low-Risk Prostate Cancer
In a European phase III trial reported in The Lancet Oncology, Azzouzi et al found that padeliporfin vascular-targeted photodynamic therapy was associated with a reduced rate of disease progression vs active surveillance in men with low-risk prostate cancer. Study Details In the open-label trial, ...
Does Androgen-Deprivation Therapy Increase the Risk for Dementia in Patients With Prostate Cancer?
In a UK population–based study reported in the Journal of Clinical Oncology, Khosrow-Khavar et al found no significant association between the use of androgen-deprivation therapy and the risk for dementia in patients with prostate cancer. The study involved a cohort of 30,903 men with newly...
Can Mindfulness-Based Cognitive Therapy Reduce Distress in Patients With Advanced Prostate Cancer?
Chambers et al found that a mindfulness-based cognitive therapy intervention did not improve measures of distress or anxiety vs minimally enhanced usual care among men with advanced prostate cancer, according to an Australian study reported in the Journal of Clinical Oncology. In the study, 189...
NAALADL2 Marker for Aggressive Prostate Cancer May Also Serve as a Drug Target
Researchers have discovered that a marker found on aggressive prostate cancer cells could also be used as a way to guide treatments to the cancer, according to new research presented by Luxton et al at the 2016 National Cancer Research Institute (NCRI) Cancer Conference in Liverpool, United...
Second Opinions From Urologists for Prostate Cancer: Do They Make a Difference?
A new analysis indicates that many men with prostate cancer obtain second opinions from urologists before starting treatment, but surprisingly, second opinions are not associated with changes in treatment choice or improvements in perceived quality of prostate cancer care. Published by...
Adulthood BMI Increases Leading to Obesity Seem to Be Linked to an Increased Risk of Fatal Prostate Cancer
In a study of data from men in the Prostate, Lung, Colorectal, and Ovarian (PLCO) Cancer Screening Trial reported in the Journal of the National Cancer Institute, Kelly et al found that body mass index (BMI) increases during adulthood that lead to obesity are associated with an increased risk of...
Potential Link Between Androgen-Deprivation Therapy for Prostate Cancer and Risk for Dementia
In a single-center analysis reported in JAMA Oncology, Nead et al found that the use of androgen-deprivation therapy for prostate cancer was associated with an increased risk for dementia. The study involved electronic medical record data from the Stanford University Health System from 1994 to...
Link Between Molecular Mechanisms in Prostate Cancer and Ewing Sarcoma Found
Medical researchers at Indiana University (IU) Bloomington have found evidence for a link between prostate cancer, which affects millions of men aged 50 and older, and Ewing's sarcoma, a rare form of cancer that affects children and young adults. The results of the study, reported by Kedage et al...
24-Gene Predictor of Response to Postoperative Radiotherapy in Prostate Cancer
In a matched retrospective analysis reported in The Lancet Oncology, Zhao et al identified and validated a 24-gene predictor of response to postoperative radiotherapy in prostate cancer. The analysis involved data from patients from five published U.S. studies (cohort, case-cohort, and...
Study Finds PFS Benefit, but No Overall Survival Benefit, for Ipilimumab in Metastatic Castration-Resistant Prostate Cancer
Ipilimumab (Yervoy) was associated with prolonged progression-free survival—but not overall survival—compared with placebo in men with asymptomatic or minimally symptomatic chemotherapy-naive metastatic castration-resistant prostate cancer without visceral metastases, according to a...
Long-Term Effects of Finasteride in Patients From the Prostate Cancer Prevention Trial
In a study reported in the Journal of the National Cancer Institute, Unger et al found that use of finasteride vs placebo in the Prostate Cancer Prevention Trial was associated with a modestly increased risk of depression and a modestly reduced risk of procedures for benign prostatic...
Christopher J. Sweeney, MBBS, on Localized Prostate Cancer: Metastasis-Free Survival as a Surrogate for Overall Survival
Christopher J. Sweeney, MBBS, of the Dana-Farber Cancer Institute, discusses how this early clinical endpoint will accelerate the development of new therapies for localized intermediate and high-risk prostate cancer. (Abstract 717O)
Study Reports No Association Between Vasectomy and Prostate Cancer Incidence or Mortality
In an analysis of the Cancer Prevention Study II (CPS-II) study cohort reported in the Journal of Clinical Oncology, Jacobs et al found no significant association between vasectomy and overall prostate cancer incidence or mortality. A recent prospective study had shown an association of vasectomy...
ASTRO 2016: Extremely Hypofractionated Radiation Therapy Shows Promising Toxicity Results for Intermediate-Risk Prostate Cancer
For men with intermediate-risk prostate cancer, side effects at 2 years following radiation therapy were comparable for extremely hypofractionated treatment, which was delivered in 7 fractions across 2.5 weeks, and conventional treatment of 39 fractions across 8 weeks, according to research...
ASTRO 2016: SBRT Offers Patients With Prostate Cancer High Disease Control and Low Toxicity in Fewer Treatments
High-dose stereotactic body radiotherapy (SBRT) for men newly-diagnosed with low- or intermediate-risk prostate cancer results in shorter treatment times, low severe toxicity, and excellent cancer control rates, according to research presented by Meier et al at the 58th Annual Meeting of the...
Paul L. Nguyen, MD, on Prostate Cancer: High-Risk Disease, Brachytherapy, And Hormones
Paul L. Nguyen, MD, of the Dana-Farber Cancer Institute, summarizes a session he moderated, which included talks on local recurrence following brachytherapy, long-term PSA stability after the procedure, and androgen deprivation and high-dose radiotherapy. (Scientific Session 41)
ASTRO 2016: Three Novel Intrinsic Subtypes of Prostate Cancer Identified
In the largest study of its kind to date, researchers have identified and validated three distinct molecular subtypes of prostate cancer that correlate with distant metastasis-free survival and can assist in future research to determine how patients will respond to treatment, according to research...
ASTRO 2016: Intermediate-Risk Prostate Cancer May Be Well Controlled With Brachytherapy Alone
For men with intermediate-risk prostate cancer, radiation treatment with brachytherapy alone can result in similar cancer control with fewer long-term side effects, when compared to more aggressive treatment that combines brachytherapy with external beam therapy (EBT), according to research...
Patient-Reported Outcomes After Active Monitoring, Surgery, or Radiotherapy in PSA-Detected Localized Prostate Cancer
Patient-reported outcomes differed among men with localized prostate cancer detected by prostate-specific antigen (PSA) testing who were randomized to receive active monitoring, surgery, or radiotherapy in the UK ProtecT trial, according to a report by Donovan et al in The New England Journal of...
ASTRO 2016: Hypofractionated Radiation Therapy Can Reduce Treatment Time With Comparable Quality of Life for Patients With Prostate Cancer
For men with early stage, low-risk prostate cancer, treatment with hypofractionated radiation therapy offers comparable health-related quality of life outcomes in one-third less treatment time than conventional radiation therapy, according to research presented by Watkins Bruner et al at the 58th...
Alan Pollack, MD, PhD, on Prostate Cancer: Postprostatectomy Radiotherapy
Alan Pollack, MD, PhD, of the University of Miami Health System, summarizes a session that included discussion of outcomes, dose response, oligometastatic disease, and gene predictor of response. (Presentations 228-235)
Daniel Hamstra, MD, PhD, on Prostate Cancer: Decreasing Rectal Toxicity 126
Daniel A. Hamstra, MD, PhD, of Texas Oncology, discusses phase III findings on the use of an absorbable hydrogel spacer designed to decrease rectal toxicity and improve bowel quality of life for patients with prostate cancer. (Abstract LBA-6)
Blood Biomarkers in Abiraterone- or Enzalutamide-Resistant Prostate Cancer Tumor Cells
While searching for a noninvasive way to detect prostate cancer cells circulating in blood, Duke Cancer Institute researchers have identified some blood markers associated with tumor resistance to two common hormone therapies. In a study published by Gupta et al in Clinical Cancer Research, a team...
Decline in Circulating Tumor Cell Count and Treatment Outcome in Advanced Prostate Cancer
A drop in the number of cancer cells detected in a patient’s blood could be the best indicator yet as to whether treatment for prostate cancer is working. A new study, published by Lorente et al in European Urology, shows that a 30% decline in a patient’s numbers of circulating tumor...
Similar 10-Year Survival Reported With Active Monitoring, Surgery, or Radiotherapy for PSA-Detected Localized Prostate Cancer
In a UK trial (ProtecT) reported in The New England Journal of Medicine, Hamdy et al found no significant differences in prostate cancer–specific or overall mortality among men with localized prostate cancer detected by prostate-specific antigen (PSA) testing who underwent active monitoring,...
PSA Failure Seems to Be Linked to Poorer Survival in Men With Unfavorable-Risk Prostate Cancer and No/Minimal Comorbidity
In an analysis of a clinical trial population reported in the Journal of Clinical Oncology, Giacalone et al found that prostate-specific antigen (PSA) failure was associated with an increased risk of mortality among men with unfavorable-risk prostate cancer who had no or minimal comorbidity burden. ...
Continuation of Docetaxel May Improve Survival in Metastatic Castration-Resistant Prostate Cancer
The number of docetaxel cycles completed was associated with improved overall survival among men with metastatic castration-resistant prostate cancer receiving docetaxel, prednisone, and lenalidomide (Revlimid; DPL) or docetaxel/prednisone (DP), in the phase III Mainsail trial. de Morrée et...
Early-Stage Prostate Cancer Incidence Rates Decline, Distant-Stage Disease Rates Unchanged in 2013
Jemal et al described findings indicating a continued decline in the incidence of localized/regional-stage prostate cancer at 2 years after the U.S. Preventive Services Task Force recommendation against routine prostate-specific antigen (PSA) screening in men aged ≥ 50 years in 2011, in a letter ...
HSD3B1 Allele May Be Associated With Resistance to Androgen-Deprivation Therapy and Poorer Outcome in Prostate Cancer
In a retrospective multicohort study reported in The Lancet Oncology, Hearn et al found that the inherited HSD3B1 (1245C) allele was significantly associated with resistance to androgen-deprivation therapy and poorer outcome in men with prostate cancer. HSD3B1 (1245A>C) has been linked to...
PSA-Based Computational Model Predicts Time to Relapse After Prostate Cancer Surgery
Approximately one in four patients who undergo radical prostatectomy experience a cancer recurrence. Now a study by Stura et al investigating a prostate-specific antigen (PSA)-based computational model that uses four consecutive postsurgical PSA values has found the mathematical model to be highly...
Novel MRI Technique Distinguishes Healthy Prostate Tissue From Cancer Using Zinc
A novel magnetic resonance imaging (MRI) method that detects low levels of zinc ion can help distinguish healthy prostate tissue from cancer, The University of Texas (UT) Southwestern Medical Center radiologists have determined. The findings were published by Clavijo Jordan et al in the Proceedings ...
Combining Radium-223 With Other Therapies May Be of Benefit in Metastatic Castration-Resistant Prostate Cancer
In an international, single-arm phase IIIB trial reported in The Lancet Oncology, Saad et al found benefit with the addition of abiraterone (Zytiga) or enzalutamide (Xtandi) to radium-223 (Xofigo) in patients with metastatic castration-resistant prostate cancer. This early-access program was...
Similar Functional Outcomes Reported With Robot-Assisted Laparoscopic and Open Radical Retropubic Prostatectomy
Robot-assisted laparoscopic prostatectomy and open radical retropubic prostatectomy yielded similar domain-specific quality-of-life or pathologic outcomes at 12 weeks in men with newly diagnosed, clinically localized prostate cancer, according to the results of a randomized phase III trial reported ...
Higher Exposure to Radical Local Treatment Linked to Lower Mortality in Men With Very High-Risk Prostate Cancer
Men with very high-risk prostate cancer treated at hospitals with a high proportion of administered radical local treatment (radiotherapy or prostatectomy) have half of the mortality risk of men who are treated at hospitals with the lowest proportions, according to a new study conducted by...
Hypofractionated Radiotherapy Not Inferior to Conventional Radiotherapy in Low-Risk Prostate Cancer
In a phase III noninferiority trial (NRG Oncology RTOG 0415) reported by Lee et al in the Journal of Clinical Oncology, W. Robert Lee, MD, MS, Med, of Duke University Medical Center, and colleagues found that hypofractionated radiotherapy was not inferior to conventional hypofractionated...
Androgen-Deprivation Therapy May Increase Mortality in African American Men With Favorable-Risk Prostate Cancer
In a retrospective study analyzing patients' medical records, researchers at Brigham and Women's Hospital (BWH) found that race significantly affected longevity by increasing the likelihood of death after receiving androgen-deprivation therapy. These findings were published by Kovtun et al in...
Sociodemographic and Clinical Predictors of Switching to Active Treatment From Observational Management in Low-Risk Prostate Cancer
Although active surveillance for patients with low-risk prostate cancer has become an increasingly acceptable strategy for disease management, many men opt for definitive therapies such as radical prostatectomy or radiation therapy. A new study of more than 2,200 patients with low-risk prostate...
Patients With Low-Risk Prostate Cancer on Active Surveillance Experience Good Quality of Life
Active surveillance has become an increasingly important alternative to surgery, chemotherapy, or radiation treatment for men diagnosed with low-risk prostate cancer. However, what is the impact of active surveillance on health-related quality of life in patients selected or opting for this...
Early Evidence of Anti–PD-1 Activity in Enzalutamide-Resistant Prostate Cancer
Restoring tumor-specific immunity is a treatment strategy that works well in melanoma and lung cancer patients. Now a new study out of the Oregon Health & Science University (OSHU) Knight Cancer Institute is reviving hope that the approach also may help men with life-threatening prostate...
PET/MRI: A One-Stop Imaging Test to Detect Prostate Cancer?
A University of Michigan study published by Piert et al in The Journal of Nuclear Medicine reported that the addition of molecular imaging based on F-18-choline positron-emission tomography (PET) improves the identification of significant prostate cancer over multiparametric prostate magnetic...
Study Finds Incidence of Mutations in DNA-Repair Genes Significantly Higher in Men With Metastatic Prostate Cancer
The incidence of mutations in DNA-repair genes was significantly higher among men with metastatic prostate cancer than among men with localized disease (11.8% vs 4.6%), according to a study by Pritchard et al reported in The New England Journal of Medicine. In addition, the frequency ...
Mixed Results With Hypofractionated vs Conventional Radiotherapy for Localized Prostate Cancer
Investigators of two European phase III trials have reached different conclusions on whether hypofractionated radiotherapy should replace conventional radiotherapy as a new standard of treatment in localized prostate cancer. The CHHiP trial findings favoring hypofractionation were reported by David ...
