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https://www.readbyqxmd.com/read/28723520/bone-scan-index-as-an-imaging-biomarker-in-metastatic-castration-resistant-prostate-cancer-a-multicentre-study-based-on-patients-treated-with-abiraterone-acetate-zytiga-in-clinical-practice
#1
Mariana Reza, Mattias Ohlsson, Reza Kaboteh, Aseem Anand, Ingela Franck-Lissbrant, Jan-Erik Damber, Anders Widmark, Camilla Thellenberg-Karlsson, Lars Budäus, Thomas Steuber, Till Eichenauer, Per Wollmer, Lars Edenbrandt, Elin Trägårdh, Anders Bjartell
BACKGROUND: Abiraterone acetate (AA) prolongs survival in metastatic castration-resistant prostate cancer (mCRPC) patients. To measure treatment response accurately in bone, quantitative methods are needed. The Bone Scan Index (BSI), a prognostic imaging biomarker, reflects the tumour burden in bone as a percentage of the total skeletal mass calculated from bone scintigraphy. OBJECTIVE: To evaluate the value of BSI as a biomarker for outcome evaluation in mCRPC patients on treatment with AA according to clinical routine...
December 2016: European Urology Focus
https://www.readbyqxmd.com/read/28723508/targeting-adaptive-pathways-in-metastatic-treatment-resistant-prostate-cancer-update-on-the-stand-up-2-cancer-prostate-cancer-foundation-supported-west-coast-prostate-cancer-dream-team
#2
Rahul Aggarwal, Tomasz M Beer, Martin Gleave, Joshua M Stuart, Matthew Rettig, Christopher P Evans, Jack Youngren, Joshi J Alumkal, Jiaoti Huang, George Thomas, Owen Witte, Eric J Small
The Stand Up 2 Cancer/Prostate Cancer Foundation-funded West Coast Dream Team project is a prospective multi-institutional study focused on acquiring metastatic castration-resistant prostate cancer (mCRPC) biopsy tissue at the time of resistance to abiraterone or enzalutamide. It is the first large-scale study designed to analyze mCRPC tissue specifically in this patient population. Study accrual is on target, with 261 out of a planned 300 metastatic tumor biopsies performed by August 2016. Paired biopsies have been completed in 42 patients, with paired genomic data before and after therapy obtained in 26 cases...
December 2016: European Urology Focus
https://www.readbyqxmd.com/read/28723476/charting-recent-progress-and-challenges-in-metastatic-castration-resistant-prostate-cancer-is-there-an-optimal-treatment-sequence
#3
REVIEW
Stéphane Oudard, Pablo Maroto, Gaston Demonty, Winald R Gerritsen
CONTEXT: Recent developments in the treatment of metastatic castration-resistant prostate cancer (mCRPC) have led to uncertainty about the optimal sequence of agents. OBJECTIVE: To review and assess treatment options and sequence in patients with mCRPC. EVIDENCE ACQUISITION: To identify data on the optimal use of approved treatments, we searched PubMed for studies on the use of recently approved agents for men with mCRPC published before March 2015...
October 2016: European Urology Focus
https://www.readbyqxmd.com/read/28718070/platelet-lymphocyte-and-neutrophil-lymphocyte-ratios-are-prognostic-but-not-predictive-of-response-to-abiraterone-acetate-in-metastatic-castration-resistant-prostate-cancer
#4
A J Lozano Martínez, R Moreno Cano, S Escobar Páramo, R Salguero Aguilar, E Gonzalez Billalabeitia, R García Fernández, I De La Fuente Muñoz, A Romero Borque, M Porras Martínez, F Lopez Soler, E Cardenas Cánovas, I Ortega Martín
PURPOSE: Recently neutrophil-lymphocyte ratio (NLR) and platelet-lymphocyte ratio (PLR) have been reported to be inflammatory parameters that confer poorer outcome in metastatic castration-resistant prostate cancer (mCPRPC). However, these ratios have not been analyzed in patients treated with abiraterone acetate. We explored the relationship between different values of PLR and NLR and survival in mCPRCP treated with abiraterone and their possible relation with a prostate specific antigen (PSA) response...
July 17, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28715929/molecular-interactions-of-bisphenols-and-analogs-with-glucocorticoid-biosynthetic-pathway-enzymes-an-in-silico-approach
#5
Garima Verma, Mohemmed Faraz Khan, Wasim Akhtar, Mohammad Mumtaz Alam, Mymoona Akhter, Mohammad Shaquiquzzaman
Glucocorticoids are known to have vital effects on metabolism, behavior and immunity. Any sort of impairment in their synthesis may lead to the generation of numerous ill health effects. Different environmental toxicants, including bisphenols and their analogs pose deleterious effect on the biosynthesis of glucocorticoids, thereby leading to endocrine disruption. In order to assess the effect of these environmental toxicants on gluocorticoid biosynthetic pathway, an in silico study was performed. This involved molecular docking studies of 18 ligands with the selected participating enzymes of the pathway...
July 17, 2017: Toxicology Mechanisms and Methods
https://www.readbyqxmd.com/read/28711312/radium-223-in-the-therapeutic-sequence-of-metastatic-castration-resistant-prostate-cancer
#6
M Unda-Urzaiz, R Sousa-Campo, A Rodríguez-Antolín, C Silva-Marins, A Juárez-Soto, B Miñana-López, A Figueiredo-de Castro, J M Cozar-Olmos
CONTEXT: Radium-223 is an □ -particle transmitter with specific action on bone metastases. The Alpharadin in Symptomatic Prostate Cancer Patients (ALSYMPCA) study showed that radium-223 extended overall survival and delayed the onset of bone events in patients with symptomatic castration-resistant prostate cancer with bone metastases (mCRPC) and without visceral metastases, with a good safety profile. OBJECTIVE: To review the new scientific evidence on radium-223 based on prespecified and post-hoc analyses of the ALSYMPCA study and on early-access programs after the publication of the ALSYMPCA study, thereby providing new data on the management of patients with mCRPC...
July 12, 2017: Actas Urologicas Españolas
https://www.readbyqxmd.com/read/28710320/correction-a-phase-ii-trial-of-abiraterone-combined-with-dutasteride-for-men-with-metastatic-castration-resistant-prostate-cancer
#7
(no author information available yet)
No abstract text is available yet for this article.
July 15, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28707844/castration-resistance-prostate-cancer-what-is-in-the-pipeline
#8
Cosimo DE Nunzio, Fabrizio Presicce, Silvana Giacinti, Maria Bassanelli, Andrea Tubaro
INTRODUCTION: To evaluate the available evidence on the standard diagnosis and management of men with metastatic castration resistant prostate cancer (mCRPC), and providing the timely update on new pharmacological treatments. EVIDENCE ACQUISITION: A systematic literature search from from January 2000 until March 2017 was performed by combining the following MESH terms: castrate resistant prostate cancer, abiraterone, enzalutamide, 223radium, sipuleucel-T, docetaxel, cabazitaxel, resistance mechanisms, resistance to androgen deprivation, Androgen Receptor (AR) mutations, amplifications, splice variants, and AR alterations...
July 12, 2017: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
https://www.readbyqxmd.com/read/28700990/oncologic-response-and-hospitalization-rate-of-patients-receiving-cabazitaxel-in-the-fourth-line-and-beyond-in-castration-resistant-prostate-cancer-analysis-of-a-retrospective-cohort-and-a-structured-literature-review
#9
Jost von Hardenberg, Maike Schwartz, Thorsten Werner, Stefan Fuxius, Arne Strauss, Thomas Stefan Worst, Philipp Nuhn, Christian Bolenz, Elmar Heinrich
BACKGROUND: Limited data are available for the use of agents in metastatic castration-resistant prostate cancer (mCRPC) beyond the third-line. We provide data during treatment with cabazitaxel (CAB), helping to improve the informed-consent process. PATIENTS AND METHODS: We retrospectively reviewed patients treated with fourth-line or beyond CAB for mCRPC after failure of previous therapies with docetaxel, abiraterone acetate, enzalutamide and/or radium-223. The progression-free survival (PFS) and the overall survival (OS) were estimated using the Kaplan-Meier method and compared to published data based on a structured literature review...
July 13, 2017: Urologia Internationalis
https://www.readbyqxmd.com/read/28697343/redefining-hormonal-therapy-for-advanced-prostate-cancer-results-from-the-latitude-and-chaarted-studies
#10
Eric J Small
Two papers published recently in the New England Journal of Medicine describe the utility of abiraterone acetate, an androgen biosynthesis inhibitor, in the early treatment of metastatic prostate cancer. In addition to establishing a new standard of care, these two articles pose a number of important questions for future investigation.
July 10, 2017: Cancer Cell
https://www.readbyqxmd.com/read/28695267/impact-of-an-alternative-steroid-on-the-relative-bioavailability-and-bioequivalence-of-a-novel-versus-the-originator-formulation-of-abiraterone-acetate
#11
Azra Hussaini, Anthony J Olszanski, Cy A Stein, Bill Bosch, Paul Nemeth
PURPOSE: The originator abiraterone acetate (OAA) formulation is used for the treatment of metastatic castration-resistant prostate cancer (mCRPC). This study evaluated the bioavailability and bioequivalence of a novel formulation, abiraterone acetate fine particle (AAFP), versus OAA on a steady-state background of steroids. METHODS: Thirty-seven healthy male subjects were randomized in a crossover design to receive methylprednisolone (4 mg twice daily) or prednisone (5 mg twice daily) for 12 days in Period 1...
July 10, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28668865/combining-abiraterone-and-radiotherapy-in-prostate-cancer-patients-who-progressed-during-abiraterone-therapy
#12
Beatrice Detti, Rolando M D'Angelillo, Gianluca Ingrosso, Emanuela Olmetto, Giulio Francolini, Luca Triggiani, Alessio Bruni, Simona Borghesi, Simona Fondelli, Tommaso Carfagno, Roberto Santini, Riccardo Santoni, Luca E Trodella, Lorenzo Livi
BACKGROUND/AIM: This multicenter, retrospective, 'field-practice' study investigated treatment outcomes of ongoing abiraterone therapy with the addition of radiotherapy (RT) - initiated for oligoprogression or with a palliative intent. PATIENTS AND METHODS: Consecutive patients affected by metastatic castration-resistant prostate cancer (mCRPC) treated with abiraterone acetate were considered if they had received RT after the initiation of abiraterone treatment...
July 2017: Anticancer Research
https://www.readbyqxmd.com/read/28663228/testicular-versus-adrenal-sources-of-hydroxyandrogens-in-prostate-cancer
#13
Tianzhu Zang, Mary-Ellen Taplin, Daniel Tamae, Wanling Xie, Clementina Mesaros, Zhenwei Zhang, Glenn J Bubley, Robert Bruce Montgomery, Steven Balk, Elahe Mostaghel, Ian A Blair, Trevor Penning
Neoadjuvant androgen deprivation therapy (NADT) is one strategy for the treatment of early-stage prostate cancer; however, the long-term outcomes of NADT with radical prostatectomy including biochemical failure-free survival are not promising. One proposed mechanism is incomplete androgen ablation. In this study, we aimed to evaluate the efficiency of serum hydroxy-androgen suppression in patients with localized high-risk prostate cancer under NADT (leuprolide acetate plus abiraterone acetate and prednisone) and interrogate the primary sources of circulating hydroxy-androgens using our recently described stable isotope dilution liquid chromatography mass spectrometric method (Zang et al...
June 29, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28655452/high-dose-abiraterone-acetate-in-men-with-castration-resistant-prostate-cancer
#14
Terence W Friedlander, Julie N Graff, Kreshnik Zejnullahu, Archana Anantharaman, Li Zhang, Rosa Paz, Gayatri Premasekharan, Carly Russell, Yong Huang, Won Kim, Rahul R Aggarwal, Amy M Lin, Lawrence Fong, Joshi J Alumkal, Tomasz M Beer, Nima Sharifi, Mohammad Alyamani, Ryan Dittamore, Eric J Small, Pamela L Paris, Charles J Ryan
BACKGROUND: Abiraterone acetate (AA) inhibits androgen biosynthesis and prolongs survival in men with metastatic castration-resistant prostate cancer (mCRPC) when combined with prednisone (P). Resistance to therapy remains incompletely understood. In this open-label, single-arm, multicenter phase II study we investigated the clinical benefit of increasing the dose of AA at the time of resistance to standard-dose therapy. PATIENTS AND METHODS: Eligible patients had progressive mCRPC and started AA 1000 mg daily and P 5 mg twice daily...
June 3, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28655021/the-diagnosis-and-treatment-of-prostate-cancer-a-review
#15
REVIEW
Mark S Litwin, Hung-Jui Tan
Importance: Prostate cancer is the most common cancer diagnosis made in men with more than 160 000 new cases each year in the United States. Although it often has an indolent course, prostate cancer remains the third-leading cause of cancer death in men. Observations: When prostate cancer is suspected, tissue biopsy remains the standard of care for diagnosis. However, the identification and characterization of the disease have become increasingly precise through improved risk stratification and advances in magnetic resonance and functional imaging, as well as from the emergence of biomarkers...
June 27, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28649702/dose-considerations-for-anti-cancer-drugs-in-metastatic-prostate-cancer
#16
REVIEW
Megan Crumbaker, Howard Gurney
Despite a growing number of treatment options, metastatic castrate resistant prostate cancer remains almost universally fatal. Dose individualization ensures patients receive the maximal benefit from each line of treatment potentially leading to improved outcomes, a reduction in quality of life impairment and minimization of premature cessation for avoidable toxicity. Herein, we review drug-specific issues that may be associated with unexpected or unrecognized variations in drug systemic exposure despite the use of protocol doses...
June 26, 2017: Prostate
https://www.readbyqxmd.com/read/28644302/the-role-of-bone-targeted-therapies-for-prostate-cancer-in-2017
#17
Samer L Traboulsi, Fred Saad
PURPOSE OF REVIEW: Bone-targeted agents (BTAs), such as zoledronic acid and denosumab, delay the occurrence of skeletal-related events (SREs) in metastatic prostate cancer (PCa) patients. Recently, several agents, such as abiraterone acetate, enzalutamide and radium-223, were approved for the treatment of metastatic castration-resistant PCa (mCRPC). These agents resulted in improved overall survival (OS), pain control and had positive effects on bone health. Combining BTAs to the newly approved agents demonstrates additional benefits that warrant a review of available evidence looking at appropriate combination therapies and timing of BTAs for optimizing the management of advanced and metastatic PCa...
July 20, 2017: Current Opinion in Supportive and Palliative Care
https://www.readbyqxmd.com/read/28642838/adaptive-pathways-and-emerging-strategies-overcoming-treatment-resistance-in-castration-resistant-prostate-cancer
#18
Cameron M Armstrong, Allen C Gao
The therapies available for prostate cancer patients whom progress from hormone-sensitive to castration resistant prostate cancer include both systemic drugs, including docetaxel and cabazitaxel, and drugs that inhibit androgen signaling such as enzalutamide and abiraterone. Unfortunately, it is estimated that up to 30% of patients have primary resistance to these treatments and over time even those who initially respond to therapy will eventually develop resistance and their disease will continue to progress regardless of the presence of the drug...
October 2016: Asian Journal of Urology
https://www.readbyqxmd.com/read/28633425/androgen-receptor-mutations-in-patients-with-castration-resistant-prostate-cancer-treated-with-apalutamide
#19
D E Rathkopf, M R Smith, C J Ryan, W R Berry, N D Shore, G Liu, C S Higano, J J Alumkal, R Hauke, R F Tutrone, M Saleh, E Chow Maneval, S Thomas, D S Ricci, M K Yu, C J de Boer, A Trinh, T Kheoh, R Bandekar, H I Scher, E S Antonarakis
Background: : Mutations in the androgen receptor (AR) ligand-binding domain (LBD), such as F877L and T878A, have been associated with resistance to next-generation AR-directed therapies. ARN-509-001 was a phase I/II study that evaluated apalutamide activity in castration-resistant prostate cancer (CRPC). Here we evaluated the type and frequency of 11 relevant AR-LBD mutations in apalutamide-treated CRPC patients. Patients and methods: : Blood samples from men with non-metastatic CRPC (nmCRPC) and metastatic CRPC (mCRPC) pre- or post abiraterone acetate and prednisone (AAP) treatment (≥6 months' exposure) were evaluated at baseline and disease progression in trial ARN-509-001...
June 15, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28628393/early-national-dissemination-of-abiraterone-and-enzalutamide-for-advanced-prostate-cancer-in-medicare-part-d
#20
Megan E V Caram, Tudor Borza, Hye-Sung Min, Jennifer J Griggs, David C Miller, Brent K Hollenbeck, Bhramar Mukherjee, Ted A Skolarus
INTRODUCTION: Abiraterone and enzalutamide were approved by the Food and Drug Administration in 2011 and 2012 to treat men with metastatic castration-resistant prostate cancer (mCRPC). Most men with mCRPC are > 65 years of age and thus eligible for Medicare Part D. We conducted a study to better understand the early dissemination of these drugs across the United States using national Medicare Part D data. METHODS: We evaluated the number of prescriptions for abiraterone and enzalutamide by provider specialty and hospital referral region (HRR) using Medicare Part D and Dartmouth Atlas data...
June 19, 2017: Journal of Oncology Practice
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