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Hensley PJ, Labbate C, Zganjar A, Howard J, Huelster H, Durdin T, Pham J, Xiao L, Pallauf M, Lombardo K, Glezerman I, Singla N, Raman JD, Coleman J, Spiess PE, Margulis V, Potretzke AM, Matin SF. Development and Validation of a Multivariable Nomogram Predictive of Post-Nephroureterectomy Renal Function. Eur Urol Oncol 2024:S2588-9311(24)00030-0. [PMID: 38307832 DOI: 10.1016/j.euo.2024.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 12/08/2023] [Accepted: 01/04/2024] [Indexed: 02/04/2024]
Abstract
BACKGROUND AND OBJECTIVE The timing of perioperative nephrotoxic chemotherapy for upper tract urothelial carcinoma (UTUC) remains controversial and strongly depends on predicted platinum eligibility after radical nephroureterectomy (RNU). The study objective was to develop and validate a multivariable nomogram to predict estimated glomerular filtration rate (eGFR) following RNU. METHODS This was a multi-institutional retrospective study of patients with UTUC treated with RNU from 2000 to 2020 at seven high-volume referral centers. Use of adjuvant chemotherapy was risk-stratified. Patients were retrospectively randomly allocated 2:1 to discovery and validation cohorts. Discovery data were used to identify independent factors associated with GFR at 1-3 mo after RNU on linear regression, and backward selection was applied for model construction. Accuracy was defined as the percentage of predicted eGFR results within 30% of the corresponding observed eGFR. KEY FINDINGS AND LIMITATIONS We included 1100 patients, of whom 733 were in the discovery and 367 were in the validation cohort. Multivariable predictors of postoperative eGFR decline included advanced age (odds ratio [OR] -0.18, 95% confidence interval [CI] -0.28 to -0.08), diabetes (OR -2.38, 95% CI -4.64 to -0.11), and hypertension (OR -2.24, 95% CI -4.16 to -0.32). Factors associated with favorable postoperative eGFR included larger tumor size (OR 10.57, 95% CI 7.4-13.74 for tumors >5 cm vs ≤2 cm) and preoperative eGFR (OR 0.44, 95% CI 0.39-0.49). A composite nomogram predicted postoperative eGFR with good accuracy in both the discovery (80.5%) and validation (78.6%) cohorts. Limitations include exclusion of patients who received neoadjuvant chemotherapy. CONCLUSIONS A nomogram that incorporates ubiquitous preoperative clinical variables can predict post-RNU eGFR and was validated with an independent cohort. PATIENT SUMMARY We developed a tool that uses patient data to predict eligibility for chemotherapy after surgery to remove the kidney and ureter in patients with cancer in the upper urinary tract.
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Affiliation(s)
- Patrick J Hensley
- Department of Urology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA; Markey Cancer Center, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Craig Labbate
- Department of Urology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | | | - Jeffrey Howard
- Department of Urology, The University of Texas Southwestern, Dallas, TX, USA
| | - Heather Huelster
- Department of Urology, Moffitt Cancer Center, Tampa, FL, USA; Department of Urology, Indiana University Health, Indianapolis, IN, USA
| | - Trey Durdin
- Department of Urology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Jonathan Pham
- Department of Urology, Penn State Health, Hershey, PA, USA
| | - Lianchun Xiao
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Maximilian Pallauf
- James Buchanan Brady Urological Institute, Johns Hopkins University, Baltimore, MD, USA; Department of Urology, University Hospital Salzburg, Paracelsus Medical University, Salzburg, Austria
| | - Kara Lombardo
- James Buchanan Brady Urological Institute, Johns Hopkins University, Baltimore, MD, USA
| | - Ilya Glezerman
- Department of Nephrology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Nirmish Singla
- James Buchanan Brady Urological Institute, Johns Hopkins University, Baltimore, MD, USA
| | - Jay D Raman
- Department of Urology, Penn State Health, Hershey, PA, USA
| | - Jonathan Coleman
- Department of Urology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | | | - Vitaly Margulis
- Department of Urology, The University of Texas Southwestern, Dallas, TX, USA
| | | | - Surena F Matin
- Department of Urology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
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Lee J, Hwang YC, Yoo S, Choo MS, Cho MC, Son H, Jeong H. Changes in kidney function according to ischemia type during partial nephrectomy for T1a kidney cancer. Sci Rep 2022; 12:4223. [PMID: 35273257 PMCID: PMC8913619 DOI: 10.1038/s41598-022-07919-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 02/28/2022] [Indexed: 11/09/2022] Open
Abstract
To compare the postoperative estimated-glomerular-filtration-rate (eGFR) and parenchymal changes between cold ischemia and zero/selective ischemia for a T1a mass. We analyzed 104 patients who underwent open partial nephrectomy with cold ischemia (53) or zero/selective ischemia (51) for T1a between 2008 and 2018 to determine postoperative renal function changes and associated factors. Postoperative renal function was expressed as (postoperative-eGFR - preoperative-eGFR)/preoperative-eGFR × 100%. Parenchymal enhancement and thicknesses of the ipsilateral kidney as tissue changes were measured on postoperative CT to identify the correlation with the renal function change. Patients with 10% or 25% decrease in eGFR were significantly more in the cold ischemia group (p = 0.032, p = 0.006). On multivariable analysis, preoperative eGFR, ischemic type, and percent change of parenchymal thickness were identified to be significantly associated with postoperative 12 months renal function (B = - 0.367, p = 0.020; B = 6.788, p = 0.042; B = 0.797, p = 0.029). Change in parenchymal thickness was negatively correlated with changes in postoperative renal function (r = - 0.277, p = 0.012). Changes in eGFR were associated with a decrease in parenchymal thickness and the type of ischemic technique. Zero/selective ischemia during partial nephrectomy may have an advantage in preserving postoperative renal function compared to cold ischemia.
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Affiliation(s)
- Junghoon Lee
- Department of Urology, Seoul National University-Seoul Metropolitan Government Boramae Medical Center, Seoul National University College of Medicine, 20, Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Korea
| | - Young Cheol Hwang
- Department of Urology, Seoul National University Hospital, Seoul National University College of Medicine, 101, Daehak-ro, Jongno-gu, Seoul, 03080, Korea
| | - Sangjun Yoo
- Department of Urology, Seoul National University-Seoul Metropolitan Government Boramae Medical Center, Seoul National University College of Medicine, 20, Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Korea
| | - Min Soo Choo
- Department of Urology, Seoul National University-Seoul Metropolitan Government Boramae Medical Center, Seoul National University College of Medicine, 20, Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Korea
| | - Min Chul Cho
- Department of Urology, Seoul National University-Seoul Metropolitan Government Boramae Medical Center, Seoul National University College of Medicine, 20, Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Korea
| | - Hwancheol Son
- Department of Urology, Seoul National University-Seoul Metropolitan Government Boramae Medical Center, Seoul National University College of Medicine, 20, Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Korea
| | - Hyeon Jeong
- Department of Urology, Seoul National University-Seoul Metropolitan Government Boramae Medical Center, Seoul National University College of Medicine, 20, Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Korea.
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Ye Y, Tanaka H, Wang Y, Campbell RA, Aguilar Palacios D, DeWitt-Foy ME, Mahmood FA, Eltemamy M, Remer EM, Li J, Campbell SC. Split renal function in patients with renal masses: utility of parenchymal volume analysis vs nuclear renal scans. BJU Int 2020; 125:686-694. [PMID: 31971315 DOI: 10.1111/bju.14997] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/09/2020] [Indexed: 12/16/2022]
Abstract
OBJECTIVES To evaluate the utility of parenchymal volume analysis (PVA) for estimation of split renal function (SRF) in patients with renal masses. SRF is important for deciding about partial vs radical nephrectomy (PN/RN) and assessing risk for developing severe chronic kidney disease after surgery. For renal donors PVA is routinely used to estimate SRF, but the utility of PVA for the more complex renal mass population remains undefined. PATIENTS AND METHODS All patients (n = 374) with renal tumours and a normal contralateral kidney managed with PN (2010-2018), with preoperative/postoperative nuclear renal scans (NRS) and cross-sectional imaging were analysed. Parenchymal volumes were measured by free-hand scripting or software analysis. Concordance between ipsilateral estimated glomerular filtration rate (eGFR) values based on SRF from NRS vs PVA were evaluated by Pearson correlation and Bland-Altman plots. Parallel analysis of all 155 patients managed with RN at our centre (2006-2016) with preoperative NRS and imaging was also performed. RESULTS For PN, the median age and tumour size were 62 years and 3.4 cm, respectively. The median preoperative ipsilateral parenchymal volume and eGFR were 181 cm3 and 36.9 mL/min/1.73 m2 , respectively. Parenchymal volumes estimated by free-hand scripting vs software analyses correlated strongly (r = 0.98, P < 0.001). Preoperative ipsilateral eGFR based on SRF from PVA vs NRS also correlated strongly (r = 0.94, P < 0.001). Ipsilateral eGFR saved after PN correlated strongly with parenchymal volume preserved (all r >0.60); however, the correlation was much stronger when ipsilateral eGFRs were based on SRF from PVA rather than NRS (z-statistic = 3.15, P = 0.002). For RN patients, preoperative eGFR in the contralateral kidney based on SRF from PVA vs NRS also correlated strongly (r = 0.87, P < 0.001). CONCLUSION PVA has utility for estimation of SRF in patients with renal masses, even though this population is older and more comorbid than renal donors and the tumour can complicate the analysis. PVA can be obtained by software analysis from preoperative cross-sectional imaging and thus readily incorporated into routine clinical practice.
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Affiliation(s)
- Yunlin Ye
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA.,State Key Laboratory of Oncology in South China, Department of Urology, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Hajime Tanaka
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA.,Department of Urology, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yanbo Wang
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA.,Department of Urology, First Hospital of Jilin University, Changchun, China
| | - Rebecca A Campbell
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA
| | | | - Molly E DeWitt-Foy
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Furman A Mahmood
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Mohamed Eltemamy
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Erick M Remer
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA.,Imaging Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Jianbo Li
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA.,Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH, USA
| | - Steven C Campbell
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA
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