Renal & Urology News September 2015 Issue

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SEP T EMBER 2015

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V O L U M E 14, I S S U E N U M B E R 7

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www.renalandurologynews.com

Study: mRCC Patient Survival Improving BY JODY A. CHARNOW RESEARCHERS WHO studied a population-based cohort of patients with metastatic renal cell carcinoma (mRCC) found a trend toward improved survival with the shift from the cytokine to the targeted therapy era. The degree of improvement, however, was slightly less than that observed in clinical trials of targeted therapies. For non-clear-cell mRCC, the limited therapeutic options translated into modest survival gains in the targeted therapy era, according to the investigators.

IN THIS ISSUE 7

Researchers identify predictors of recurrent acute kidney injury

11

Some hypogonadism guidelines may need updating

15

ADT for localized prostate cancer increases cardiac risks

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Heparin plus alkalinized lidocaine may improve IC symptoms

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Tamsulosin aids passage of large distal ureteral stones Adding heparin to alkalinized lidocaine improves interstitial cystitis symptoms. PAGE 16

“These data permit accurate counseling of a heterogeneous, ‘real world’ population of mRCC patients seeking care, especially in the setting of late presentation and unclear histology,” a research team led by Liam C. Macleod, MD, of the University of Washington in Seattle, concluded. “We are hopeful this work may serve as an impetus to systematically improve implementation of histologically guided care for mRCC.” Using the Surveillance, Epidemiology, and End Results (SEER) database, Dr. Macleod’s group identified 14,521 patients diagnosed with mRCC from

Close Surgical Margins Hike Risk of BCR CLOSE SURGICAL margins in radical prostatectomy specimens are associated with biochemical recurrence (BCR) rates similar to those of positive surgical margins, according to a new study. In study of 609 patients who underwent radical prostatectomy for prostate cancer, patients who had close and positive surgical margins on final pathology had 3-year BCR-free survival rates of 70.4% and 74.5%, respectively, a non-significant difference between the groups, Michael J. Whalen, MD, of the Icahn School of Medicine at Mount Sinai Hospital in New York, and colleagues reported. By comparison, patients with negative margins continued on page 9

© PDSN / PHOTOTAKE

Trend mirrors move to targeted therapy era

THIS CT SCAN SHOWS multiple lung metastases in a patient with renal cell carcinoma.

1990 to 2009. They analyzed survival by treatment era (cytokine era, 1990–2005; targeted therapy era, 2006–2009). Prior to the mid-2000s, the authors noted, mRCC treatments included the cytokines interferon alfa and interleukin-2. As a result of stud-

ies elucidating the molecular biology of kidney cancer, researchers developed agents targeting the vascular endothelial growth factor pathway (such as sunitinib, sorafenib, and bevacizumab) and the mammalian target of continued on page 9

ECD Kidney Loss Linked to DSA CIRCULATING donor-specific antiHLA antibody (DSA) and longer cold ischemia time independently predict worse long-term transplantation outcomes among recipients of expanded criteria donor (ECD) kidneys, according to French investigators. In a large, prospective study, a team led by Alexandre Loupy, MD, PhD, of the Paris Translational Research Centre for Organ Transplantation, Paris Descartes University, in collaboration with physicians from the DIVAT network, found that, compared with ECD kidney recipients who did not have circulating DSA on the day of transplantation (ECD/DSA−),

recipients who did (ECD/DSA+) had significantly lower graft survival rates at 7 years (44% vs. 85%). Antibody mediated rejection was the main cause of graft loss in the ECD kidney recipients with circulating DSA, the researchers reported online in the British Medical Journal. ECD/DSA+ recipients had a significant 4.4-fold increased risk of graft loss compared with ECD/DSA− recipients and a 5.6-fold increased risk of graft loss compared with all other transplant therapies. ECD/DSA− recipients experienced a 41% improvement in graft survival continued on page 9

DIALYSIS TIMING DIFFERS

Patients initiating dialysis in the VA health system do so at a lower eGFR. PAGE 11


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Renal & Urology News September 2015 Issue by Haymarket Media - Issuu