Renal & Urology News - Sept-Oct 2019 Edition

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SE P T E MBE R /O C T OBE R 2019

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VOL UME 18, IS SUE NUMBER 5

Bone Complications Common in CRPC Study finds a 40% cumulative incidence rate BY JOHN SCHIESZER MEN WITH PROSTATE cancer have a 40% cumulative incidence of first skeletal-related events (SREs) following development of castration-resistant disease, according to investigators who report that they have conducted the first large observational study to estimate SRE rates in this patient population. The study, led by Alison Tse Kawai, ScD, of RTI Health Solutions in Waltham, Massachusetts, included 2234 men with castration-­resistant prostate cancer (CRPC) in the ­Sur­veil­lance, Epidemiology, and End Results-

Medicare database. The study population had a mean follow-up period of 10.6 months, during which 896 men (40%) experienced first SREs, with 74% of SREs occurring within 12 months after cohort entry. First SREs occurred more commonly among whites than blacks. Use of a bone-targeted agent (BTA) was associated with a decreased incidence of first SREs, which included fractures, bone surgery, radiation therapy to bone, or spinal cord compression. The SRE incidence rate before any BTA use was 4.16 per 100 personmonths. The rate declined to 3.60 per

RP Caseload Predicts Survival MEN WHO UNDERGO radical prostatectomy (RP) for localized prostate cancer (PCa) live longer after surgery if they have the procedure at facilities with a high annual PCa caseload, both in terms of overall encounters and the number of RPs performed, according to a new study. Facility caseload as measured by all PCa encounters, however, is a better

Men live longer when the surgery is done at high-volume facilities, a recent study finds.

predictor of survival than the number of RPs performed, investigators reported in Cancer. Using the National Cancer Database, a team led by Sarmad Sadeghi, MD, PhD, of the Norris Comprehensive Cancer Center at the University of Southern California in Los Angeles, examined survival outcomes among 488,389 men who underwent RP in the United States as they relate to facility annual caseload (FAC) for all PCa encounters and facility annual surgical caseload (FASC) for RP cases. The investigators classified facilities into 4 volume groups (VGs) based on caseload: less than 50th percentile (VG1); 50th to 74th percentile (VG2); continued on page 7

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ADT DURATION AND SREs In a study of men with metastatic castration-resistant prostate cancer, the incidence rate of first skeletal-related events (SREs) per 100 person-months decreased with increasing duration of androgen deprivation therapy (ADT) prior to study entry. 5 4

4.85% 4.10%

3

3.32%

3.20%

3.11%

>2 – 3 years

>3 – 5 years

>5 years

2 1 0

0 –1 year

>1 – 2 years

Duration of ADT Source: Kawai AT, Martinez D, Saltus CW, et al. Incidence of skeletal-related events in patients with castration-resistant prostate cancer: An observational retrospective cohort study in the US. Prostate Cancer. 2019;2019:5971615.

100 person-months after any BTA use. “A decrease in incidence of SREs after starting BTA is suggested, but the magnitude of the effect may be confounded by indication and other factors such as age and prior SRE,” the authors wrote in Prostate Cancer.

Marital Status Affects mRCC Therapy Odds BY JODY A. CHARNOW UNMARRIED PATIENTS are less likely to undergo treatment for metastatic renal cell carcinoma (mRCC) compared with their married counterparts, according to a new study. Among men, but not women, unmarried status, compared with being married, is associated with an increased risk of cancer-specific mortality (CSM). Investigators led by Giuseppe Rosiello, MD, of IRCCS San Raffaele Scientific Institute in Milan, Italy, examined rates of cytoreductive nephrectomy, metastasectomy, and systemic therapy use according to marital status among 6975 patients with clear cell mRCC (2169 women and 4806 men) within the Surveillance, Epidemiology, and End Results database. Of these, 1018 women (46.9%) and 1450 men (30.2%) were unmarried. Compared with married men, unmarried men had significant 46%, 30%, and 39% lower odds of receiving continued on page 7

The study included men aged 65 years and older (mean age 76.6 years) ­diagnosed from 2000 to 2011. Inclusion criteria included absence of a prior malignancy (other than non-melanoma skin cancer) and intervention with continued on page 7

IN THIS ISSUE 4

Nivolumab offers long-term survival in advanced mRCC

8 Certain urinary bacteria may indicate bladder cancer

13 Metastasis site in advanced PCa predicts death risk

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Docetaxel after PCa radiation therapy not beneficial

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Statin use may attenuate prostate growth

18 Patients’ time on mRCC drugs found to predict survival 18 Post-RP complications more likely in patients with CKD Study links erectile dysfunction in pro football players to concussions PAGE 11


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