Urology Commons^™

Gross Hematuria: An Unusual Presenting Symptom Of Systemic Wild-Type Transthyretinamyloidosis., Sage A. Vincent, Daniel Christensen, Perry R. Weiner

Department of Urology Faculty Papers

Amyloidosis of the urinary bladder is a rare cause of gross hematuria. In patients with systemic amyloidosis, identification is nearly always related to cardiac complaints; urologic presenting symptoms are extremely uncommon. We present a 77-year-old male patient with painless gross hematuria ultimately found to be secondary to systemic wild-type transthyretin amyloidosis. He underwent transurethral resection of the bladder lesion and was initiated on transthyretin stabilizing medication. In the 6 months since starting treatment, the patient has had no further episodes of gross hematuria, but will require cystoscopic surveillance for evidence of recurrence or concomittment urothelial carcinoma.

Addressing Catheter Associated Uti In The Neuro Icu, Aria Mahtabfar, Md, Giuliana Labella, Msn, Caitlin Harley, Msn, Omar Shah, Md, Mba

Health Equity and Quality Improvement (HEQI) Summit

Increasing systemic pressures have forced clinicians to identify and address a variety of metrics to provide better “quality” care. Catheter associated UTIs (CAUTI) are a common health careassociated infection in the Neuro ICU and are associated with increased LOS and overall mortality.

Aims for Improvement: Improving the incidence of CAUTI at the Gibbon and JHN ICUs on an annual basis after incremental interventions.

Collaborative Review: Factors Influencing Treatment Decisions For Patients With A Localized Solid Renal Mass., Thenappan Chandrasekar, Stephen A. Boorjian, Umberto Capitanio, Boris Gershman, Maria Carmen Mir, Alexander Kutikov

Department of Urology Faculty Papers

CONTEXT: With the addition of active surveillance and thermal ablation (TA) to the urologist's established repertoire of partial (PN) and radical nephrectomy (RN) as first-line management options for localized renal cell carcinoma (RCC), appropriate treatment decision-making has become increasingly nuanced.

OBJECTIVE: To critically review the treatment options for localized, nonrecurrent RCC; to highlight the patient, renal function, tumor, and provider factors that influence treatment decisions; and to provide a framework to conceptualize that decision-making process.

EVIDENCE ACQUISITION: A collaborative critical review of the medical literature was conducted.

EVIDENCE SYNTHESIS: We identify three key decision points when managing localized RCC: (1) …

Urosim, Robert Abishek, Bryan Nardone, Jasmine Wang, Christopher Wetzel, Rob Pugliese

Phase 1

Designing a more cost-efficient method for ureteroscopy simulation training that involves 3D printing an anatomically-accurate model of a patient’s renal pelvicalyceal system.

Factors Influencing General Surgeons To Involve Urologists In Bladder Trauma Management, Joseph Schultz, Paul Chung, Md

Phase 1

Introduction: Bladder trauma injuries, which are graded by severity, often require immediate care and surgical management by General Surgeons (GS) or Urologists. This study seeks to understand the inconsistencies that exist in collaboration between GS and Urologists in bladder trauma management. We hypothesize that the decision for GS to involve Urologists in bladder trauma management is a multifactorial decision with severity of bladder trauma being the primary determining factor as opposed to other factors like provider experience or hospital setting.

Methods: This cross-sectional descriptive study surveyed GS to determine how likely they were to involve Urologists in bladder trauma …

Author Reply., Selin Isguven, Paul H. Chung, Priscilla Machado, Lauren J. Delaney, Antonia F. Chen, Flemming Forsberg, Noreen J. Hickok

Department of Radiology Faculty Papers

No abstract provided.

Perspectives And Experiences Of Transgender And Non-Binary Individuals On Seeking Urological Care., Paul H Chung, Sabina Spigner, Vishal Swaminathan, Seth Teplitsky, Rosemary Frasso

Department of Urology Faculty Papers

OBJECTIVE: To describe perspectives and experiences related to urology care-seeking of transgender and non-binary (TGNB) individuals assigned male at birth.

MATERIALS AND METHODS: This HIPAA-compliant study was IRB approved and followed Consolidated Criteria for Reporting Qualitative Studies (COREQ) guidelines. Through semistructured interviews, perspectives, and experiences of individuals related to urology care-seeking were explored. Open-ended questions were designed to elicit a range of responses rather than quantifiable data. Thematic codes were developed and explicitly defined. Codes pertaining to patient experiences were assessed and described.

RESULTS: Twenty-five TGNB individuals assigned male at birth were interviewed. Participants reported an array of factors that …

Minimizing Penile Prosthesis Implant Infection: What Can We Learn From Orthopedic Surgery?, Selin Isguven, Paul H. Chung, Priscilla Machado, Lauren J. Delaney, Antonia Chen, Flemming Forsberg, Noreen J. Hickok

Department of Radiology Faculty Papers

The implantation of penile protheses for the surgical treatment of erectile dysfunction has risen in popularity over the past several decades. Considerable advances have been made in surgical protocol and device design, specifically targeting infection prevention. Despite these efforts, device infection remains a critical problem, which causes significant physical and emotional burden to the patient. The aim of this review is to broaden the discussion of best practices by not only examining practices in urology, but additionally delving into the field of orthopedic surgery to identify techniques and approaches that may be applied to penile prothesis surgery.

Ureteroscopic Biopsy Of Upper Tract Urothelial Carcinoma And Role Of Urinary Biomarkers, Katherine E Smentkowski, Demetrius H. Bagley, Scott G. Hubosky

Department of Urology Faculty Papers

Ureteroscopic biopsy is an integral part of diagnosis of urothelial carcinoma of the upper urinary tract. It can be a technical challenge, but diagnostic rates have improved remarkably with refinements in surgical technique and specimen processing. Cytology aids with diagnosis and other urinary biomarkers continue to evolve, which may help further stratify patients for treatment. The current literature on the ureteroscopic biopsy and role of urinary biomarkers is reviewed and summarized below.

Stress Urinary Incontinence Post-Holmium Laser Enucleation Of The Prostate: A Single-Surgeon Experience., Akhil K Das, Seth Teplitsky, Tomy Perez, Jenny Guo, Joon Yau Leong, Patrick J Shenot

Department of Urology Faculty Papers

PURPOSE: To identify incidence and predictors of stress urinary incontinence (SUI) following Holmium laser enucleation of the prostate (HoLEP).

MATERIALS AND METHODS: We performed a retrospective review of 589 HoLEP patients from 2012-2018. Patients were assessed at pre-operative and post-operative visits. Univariate and multivariate regression analyses were performed to identify predictors of SUI.

RESULTS: 52/589 patients (8.8%) developed transient SUI, while 9/589 (1.5%) developed long-term SUI. tSUI resolved for 46 patients (88.5%) within the first six weeks and in 6 patients (11.5%) between 6 weeks to 3 months. Long-term SUI patients required intervention, achieving continence at 16.4 months on average, …

Natural Disasters In The Americas, Dialysis Patients, And Implications For Emergency Planning: A Systematic Review, Rashida Smith, Mph, Robert Zucker, Rosemary Frasso, Phd, Cph

College of Population Health Faculty Papers

INTRODUCTION: Natural hazards are elements of the physical environment caused by forces extraneous to human intervention and may be harmful to human beings. Natural hazards, such as weather events, can lead to natural disasters, which are serious societal disruptions that can disrupt dialysis provision, a life-threatening event for dialysis-dependent people. The adverse outcomes associated with missed dialysis sessions are likely exacerbated in island settings, where health care resources and emergency procedures are limited. The effect of natural disasters on dialysis patients living in geographically vulnerable areas such as the Cayman Islands is largely understudied. To inform predisaster interventions, we systematically …

Simple Frameshifts In Minimally Invasive Surgery Postoperative Pain Management Significantly Reduce Opiate Prescriptions., Thenappan Chandrasekar, Lydia Glick, Daniella Wong, Timothy M. Han, Joon Yau Leong, Misung Yi, James R. Mark, Mark J. Mann, Edouard J. Trabulsi, Costas D. Lallas

Department of Urology Faculty Papers

INTRODUCTION: To evaluate the impact of an 'opt-in' non-narcotic postoperative pain regimen on narcotic utilization and patient-reported pain scores.

MATERIALS AND METHODS: A prospective, non-blinded pre- and post-interventional trial was conducted, including a lead-in period for baseline evaluation. The intervention group received a new pain protocol prioritizing non-narcotic medications, an 'opt-in' requirement for opiates, and standardized patient education. Study outcomes included opiate prescription and utilization (measured in Morphine Equivalent Doses) and reported pain scores on postoperative day (POD) 1, discharge and follow up.

RESULTS: At discharge, 70% fewer patients were prescribed any opioids (ARR: -0.7; p < 0.001); the amount prescribed was reduced by 95% (pre-intervention 69.3 mg versus post-intervention 3.5 mg, p < 0.001). Mean opioids used following discharge decreased by 76% (14.7 mg versus 3.5 mg, p = 0.011). In a subgroup analysis of robotic prostatectomies, there was a 95% reduction in mean opioids prescribed at discharge (64.6 mg versus 3.2 mg, p < 0.001) and 82% reduction in utilization over entire postoperative course (87.6 mg versus 15.7 mg, p = 0.001). There was no significant difference in pain scores between intervention groups at POD 1, discharge and follow up for patients (entire cohort and post-prostatectomy).

CONCLUSION: A standardized pain …

Preventing Prostate Biopsy Complications: To Augment Or To Swab?, L. Glick, S. Vincent, T. M. Han, C. Caputo, D. Squadrito, J. Y. Leong, C. Fonshell, K. Syed, J. F. Danella, S. Ginzburg, T. J. Guzzo, M. Hagg, J. D. Raman, M. Smaldone, R. G. Uzzo, J. J. Tomaszewski, A. C. Reese, E. J. Trabulsi, L. G. Gomella, M. J. Mann

Health Equity and Quality Improvement (HEQI) Summit

Aims for Improvement

• The aim of this study was to determine the antibiotic prophylaxis associated with the fewest infectious complications following prostate biopsy
• Determining the safest method allows the Jefferson Department of Urology to modify its biopsy protocol and improve the rate of post-biopsy complications

Simple Frameshifts In Mis Postoperative Pain Management Significantly Reduce Opiate Prescriptions, L. Glick, D. Wong, T. M. Han, J. Y. Leong, A. Uhr, J. R. Mark, M. J. Mann, E. J. Trabulsi, C. D. Lallas, T. Chandrasekar

Health Equity and Quality Improvement (HEQI) Summit

Aims for Improvement

• The intervention aimed to reduce narcotics provided to patients after MIS by reducing number of narcotic prescriptions and amount prescribed by 25% without affecting patientreported pain scores
• Usage measured in Morphine Equivalent Doses (MED)
• MED and pain score assessed at 3 time points: post-op day 1 (POD1), discharge (D/C) and follow-up (FU) apt
• Pre- and Post-intervention cohorts - Month 1 (Pre-intervention): 21 patients and Month 2 (Post-intervention): 30 patients

Non-Obstetrical Robotic-Assisted Laparoscopic Surgery In Pregnancy: A Systematic Literature Review., Courtney Capella, Joseph Godovchik, Thenappan Chandrasekar, Huda B. Al-Kouatly

Department of Urology Faculty Papers

Urologic and gynecologic surgeons are the top utilizers of robotic surgery; however, non-obstetrical robotic-assisted laparoscopic surgery (RALS) in pregnant patients is infrequent. A systematic literature review was performed to ascertain the frequency, indication and complications of RALS in pregnancy. Results showed thirty-eight pregnancies from eleven publications between 2008-2020. Five cases were for urologic indication and thirty-three for gynecologic indication. Minimal surgical alterations were required. Although no adverse maternal-fetal outcomes were reported, there are not enough cases published to determine safety. This review demonstrates the feasibility of RALS for the pregnant population in the hands of competent robotic surgeons.

Robotic Adrenalectomy For Functional Adenoma In Second Trimester Treats Worsening Hypertension., Courtney E. Capella, Thenappan Chandrasekar, May Jean Counsilman, Christopher Sebastiano, Costas D. Lallas, Huda B. Al-Kouatly

Department of Urology Faculty Papers

A 33-year-old G6P3023 was found to have a 4.2 cm right adrenal incidentaloma during an admission for right pyelonephritis. Computed tomography (CT) was performed to rule out perinephric abscess in the setting of worsening leukocytosis while on antibiotics ( Fig. 1). Initial differential diagnosis from endocrinology included pheochromocytoma and primary aldosteronism. Due to the lack of typical physical exam stigmata, Cushing syndrome was initially of low concern. Of note, her past medical history included hypertension treated with amlodipine 10 mg and hydrochlorothiazide 12.5 mg. During admission, extensive endocrine laboratory workup demonstrated an elevated aldosterone:plasma renin activity, suppressed dehydroepiandrosterone (DHEA), normal …

Male Luts – Introduction And Overview, Thenappan Chandrasekar, Md

Department of Family & Community Medicine Presentations and Grand Rounds

Outline & Goals

• Background – What are “LUTS”?

• Anatomy

• Pathophysiology

• Storage – bladder filling symptoms
• Voiding – urine flow symptoms
• Post-micturition

• Major etiologies and management

• BPH / BOO
• OAB
• Nocturia

• Related to Prostate Cancer?

Setting The Standards: Examining Research Productivity Among Academic Urologists In The Usa And Canada In 2019., Thenappan Chandrasekar, Timothy M. Han, Lydia Glick, Joon Yau Leong, Seth Teplitsky, Rodrigo Noorani, Hanan Goldberg, Zachary Klaassen, Christopher J.D. Wallis, James R. Mark, Edouard J. Trabulsi, Costas D. Lallas, Leonard G. Gomella

Department of Urology Faculty Papers

BACKGROUND: Research productivity among academic urologists is strongly encouraged, but little data are available on productivity metrics within the field.

OBJECTIVE: To provide the first comprehensive survey of research productivity among academic urologists in the USA and Canada.

DESIGN, SETTING, AND PARTICIPANTS: Using the Accreditation Council for Graduate Medical Education, the Canadian Resident Matching Service, and individual program websites, all active accredited urology faculties were identified. For each individual, we collected data on American Urological Association section, title, gender, fellowship training, Scopus H-index, and citations. Comprehensive searches were completed during March-May 2019.

OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: Descriptive statistics for …

Robotic Adrenalectomy For Functional Adenoma In Second Trimester Treats Worsening Hypertension, Courtney Capella, Bs, Joseph Godovchik, Bs, May Jean Counsilman, Md, Thenappan Chandrasekar, Md, Costas D. Lallas, Md, Huda B. Al-Kouatly, Md

Department of Obstetrics and Gynecology Posters

Robotic adrenalectomy is a feasible surgical alternative in the second trimester and can reverse the hypertensive disease and its associated maternal-fetal complications

Color-Changing Device To Improve Adherence To Foley Catheter Replacement Protocols And Reduce Urinary Tract Infection Frequency, Alexander Straus, Ms, Kurt Hill, Bryn Cross, Jason M. Fields, Md

Phase 1

Background: Catheter associated urinary tract infections (CAUTI) are a major source of patient morbidity and mortality in healthcare settings and have a significant financial impact on the healthcare system. Many hospitals have clinical protocols in place to continually reassess the necessity of indwelling foley catheters and remove them if their use is no longer warranted. However, it is still common for indwelling foley catheters to be overlooked and remain in place, even after meeting criteria for removal. A design project was conducted that sought to improve adherence to clinical protocols, and reduce frequency of CAUTIs, by creating a color-changing device …

Alkalinizing Agents: A Review Of Prescription, Over-The-Counter, And Medical Food Supplements., Karen L. Stern, Noah Canvasser, Michael Borofsky, Vanessa M. Gleason, Guido Kamphuis, Marawan M. El Tayeb, Ryan Hsi, Kymora B. Scotland

Jefferson Hospital Staff Papers and Presentations

Introduction

Kidney stones affect 1 in every 11 people in the United States each year. There is a significant high recurrence rate without a stone prevention protocol. Alkali citrate is beneficial in decreasing stone recurrence, but due to the cost and gastrointestinal side effects there is a low adherence rate. This study aims to serve as a review of some of the most commonly used alkalizing over‐ the‐ counter supplements that are advertised to prevent and treat kidney stones.

Methods

Data was gathered by a comprehensive online literature search and company inquiries for kidney stone prevention supplements. An additional informal …

Color-Changing Device To Improve Adherence To Foley Catheter Replacement Protocols And Reduce Urinary Tract Infection Frequency, Kurt Hill, Alexander Straus, Ms, Bryn Cross, Jason M. Fields, Md

Phase 1

Background: Foley catheter-associated UTI’s (CAUTI’s) represent a driving cause of cystitis, bacteremia and sepsis in the hospital setting. Accordingly, the CDC has identified prolonged indwelling time as the foremost risk factor for CAUTI’s. However, the fundamental design of the Foley has remained unchanged for over eighty years. Hospital-specific protocols do currently exist for the removal of infection-prone catheters; however, in practice it remains commonplace for catheters to be ignored, increasing the risk of life-threatening infection. Our design process addressed this by creating a color-changing alarm device that would alert providers when a catheter has been left in beyond protocol, is …

Angiogenin Mrna Expression Levels In Prostate Cancer Tissue, Bowen Yao, Megumi Shigematsu, Phd, Kamlesh Ganesh Pawar, Phd, Venetia Pliatsika, Ms, Yohei Kirino, Phd

Phase 1

Introduction: Prostate cancer is the most commonly diagnosed cancer in men and second leading cause of cancer deaths. Studies have shown that tRNA fragments are upregulated in prostate cancers and play important roles in carcinogenesis. This project looks at how tRNA cleaving enzyme angiogenin expression is regulated in prostate cancer tissues.

Methods: Clinical data and mRNA expression levels of selected tRNA cleaving enzymes were extracted from the TCGA website. mRNAs were sequenced using IlluminaGA_RNASeqV2 at University of North Carolina.

Results: 546 samples from 494 patients, with normal tissue from 53 patients were collected. ANG mRNA levels were lower in patients …

Comparison Of Patient Satisfaction With Telehealth And In-Clinic Post-Operative Visits, Lillian Matthews, Bryan Renslo, Deborah T. Glassman, Md

Phase 1

Introduction: Telehealth has grown rapidly in the healthcare industry as a time efficient, affordable, and accessible means to provide care. Jefferson’s Department of Urology currently employs telehealth for post-operative visits but its efficacy in post-nephrectomy patients has not been well studied. We aim to demonstrate that patient satisfaction is the same for telehealth versus in-clinic post-operative visits in nephrectomy patients. Secondarily we will examine distance saved for telehealth patients.

Methods: We will administer an IRB approved questionnaire to all nephrectomy patients via the EPIC^® EMR platform after their post-operative visit. Each questionnaire will be specific to telehealth or …

Comparison Of Patient Satisfaction Between Telehealth And In-Clinic Post-Operative Visits, Bryan Renslo, Lillian Matthews, Deborah T. Glassman, Md

Phase 1

Introduction: Telehealth has the potential to be an efficient, affordable, and accessible means to give care. In the field of Urology, its use has large potential but has not been well studied. We hypothesize that the use of telehealth for post-op nephrectomy patients will maintain the same level of patient satisfaction. We also hypothesize that telehealth visits will take less time and save patients money by eliminating the need to travel.

Methods: From May through July 2019, post-nephrectomy patients who consented to the study were given either a telehealth or in-clinic post-operative visit. Outcome metrics and demographics information were obtained …

Prognostic Nomogram For Bladder Cancer With Brain Metastases: A National Cancer Database Analysis., Zhixian Yao, Zhong Zheng, Wu Ke, Renjie Wang, Xingyu Mu, Feng Sun, Xiang Wang, Shivank Garg, Wenyin Shi, Yinyan He, Zhihong Liu

Department of Radiation Oncology Faculty Papers

BACKGROUND: This study aimed to establish and validate a nomogram for predicting brain metastasis in patients with bladder cancer (BCa) and assess various treatment modalities using a primary cohort comprising 234 patients with clinicopathologically-confirmed BCa from 2004 to 2015 in the National Cancer Database.

METHODS: Machine learning method and Cox model were used for nomogram construction. For BCa patients with brain metastasis, surgery of the primary site, chemotherapy, radiation therapy, palliative care, brain confinement of metastatic sites, and the Charlson/Deyo Score were predictive features identified for building the nomogram.

RESULTS: For the original 169 patients considered in the model, the …

Comparison Of Mri- And Trus-Informed Prostate Biopsy For Prostate Cancer Diagnosis In Biopsy-Naive Men: A Systematic Review And Meta-Analysis., Hanan Goldberg, Ardalan E. Ahmad, Thenappan Chandrasekar, Laurence Klotz, Mark Emberton, Masoom A. Haider, Samir S. Taneja, Karan Arora, Neil Fleshner, Antonio Finelli, Nathan Perlis, Mark D. Tyson, Zachary Klaassen, Christopher J.D. Wallis

Department of Urology Faculty Papers

PURPOSE: Multiparametric magnetic resonance imaging (mpMRI) with informed targeted biopsies (TGBX) has changed the paradigm of prostate cancer (PCa) diagnosis. Randomized studies have demonstrated a diagnostic benefit of Clinically significant (CS) for TGBX compared to standard systematic biopsies (SBX). We aimed to evaluate whether mpMRI-informed TGBX has superior diagnosis rates of any-, CS-, high-grade (HG)-, and clinically insignificant (CI)-PCa compared to SBX in biopsy-naive men.

METHODS: Data was searched in Medline, Embase, Web of Science, and Evidence-based medicine reviews-Cochrane Database of systematic reviews from database inception until 2019. Studies were selected by two authors independently, with disagreements resolved by consensus …

Incorporating Mpmri Biopsy Data Into Established Pre-Rp Nomograms: Potential Impact Of An Increasingly Common Clinical Scenario, Joon Yau Leong, Jaime O. Herrera-Caceres, Hanan Goldberg, Elwin Tham, Seth Teplitsky, Leonard G. Gomella, Neil E. Fleshner, Costas D. Lallas, Edouard J. Trabulsi, Thenappan Chandrasekar

Department of Urology Faculty Papers

Background: We examine the practical application of multiparametric MRI (mpMRI) prostate biopsy data using established pre-RP nomograms and its potential implications on RP intraoperative decision-making. We hypothesize that current nomograms are suboptimal in predicting outcomes with mpMRI targeted biopsy (TBx) data.

Materials and methods: Patients who underwent mpMRI-based TBx prior to RP were assessed using the MSKCC and Briganti nomograms with the following iterations: (1) Targeted (T) (targeted only), (2) Targeted and Systematic (TS) and (3) Targeted Augmented (TA) (targeted core data; assumed negative systematic cores for 12 total cores). Nomogram outcomes, lymph node involvement (LNI), extracapsular extension (ECE), organ-confined …

Twitter And Academic Urology In The United States And Canada: A Comprehensive Assessment Of The Twitter-Verse In 2019., Thenappan Chandrasekar, Hanan Goldberg, Zachary Klaassen, Christopher J. Wallis, Joon Yau Leong, Spencer Liem, Seth Teplitsky, Rodrigo Noorani, Stacy Loeb

Department of Urology Faculty Papers

OBJECTIVE: To provide the first comprehensive analysis of the Twitter-verse amongst academic urologists and programs in North America.

METHODS: Using national accreditation and individual program websites, all active urology residency programs (USA & Canada) and academic Urology faculty at these programs were identified. Demographic data for each program (AUA section, resident class size) and physician (title, fellowship training, Scopus H-index and citations) were documented. Twitter metrics (Twitter handle, date joined, # tweets, # followers, # following, likes) for programs and physicians were catalogued (data capture: March-April 2019). Descriptive analyses and temporal trends in Twitter utilization amongst programs and physician were …

High-Fat Diet Fuels Prostate Cancer Progression By Rewiring The Metabolome And Amplifying The Myc Program., David P. Labbé, Giorgia Zadra, Meng Yang, Jaime M Reyes, Charles Y Lin, Stefano Cacciatore, Ericka M. Ebot, Amanda L. Creech, Francesca Giunchi, Michelangelo Fiorentino, Habiba Elfandy, Sudeepa Syamala, Edward D. Karoly, Mohammed Alshalalfa, Nicholas Erho, Ashley Ross, Edward M. Schaeffer, Ewan A. Gibb, Mandeep Takhar, Robert B. Den, Jonathan Lehrer, R. Jeffrey Karnes, Stephen J. Freedland, Elai Davicioni, Daniel E. Spratt, Leigh Ellis, Jacob D. Jaffe, Anthony V. DʼAmico, Philip W. Kantoff, James E. Bradner, Lorelei A. Mucci, Jorge E. Chavarro, Massimo Loda, Myles Brown

Department of Radiation Oncology Faculty Papers

Systemic metabolic alterations associated with increased consumption of saturated fat and obesity are linked with increased risk of prostate cancer progression and mortality, but the molecular underpinnings of this association are poorly understood. Here, we demonstrate in a murine prostate cancer model, that high-fat diet (HFD) enhances the MYC transcriptional program through metabolic alterations that favour histone H4K20 hypomethylation at the promoter regions of MYC regulated genes, leading to increased cellular proliferation and tumour burden. Saturated fat intake (SFI) is also associated with an enhanced MYC transcriptional signature in prostate cancer patients. The SFI-induced MYC signature independently predicts prostate cancer …