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Multicenter Study
. 2025 Aug;72(8):e31774.
doi: 10.1002/pbc.31774. Epub 2025 May 20.

Contemporary Biology, Management, and Outcomes of Renal Medullary Carcinoma in Children and Adults: A Pediatric Surgical Oncology Research Collaborative Study

Catherine B Beckhorn  1 Marcus M Malek  2 Harold N Lovvorn  3 Harold J Leraas  4 Katlyn G McKay  5 Nelly-Ange T Kontchou  5 Zachary J Kastenberg  6 David W Hoyt  6 Jonathan P Roach  7 Emily K Myers  7 Nicholas G Cost  8 Bhargava Mullapudi  9 Charles R Marchese  9 Amanda R Jensen  9 Timothy B Lautz  10 Michela Carter  10 Roshni Dasgupta  11 John Lundstedt  11 Joseph G Brungardt  11 Lindsay J Talbot  12 Andrew M Davidoff  12 Andrew J Murphy  12 Jennifer H Aldrink  13 Sara A Mansfield  13 Nelson Piché  14 Dave R Lal  15 Brian T Craig  15 Jennifer M Schuh  15 Barrett P Cromeens  16 Sindhu V Mannava  16 Shannon L Castle  17 Adriana Lopez  18 Kelsey Mello  18 Joshua Short  19 Robin T Petroze  20 Shay Rajavel  21 Grace R Thompson  22 Peter Mattei  23 David H Rothstein  24 Elizabeth Fialkowski  25 Kathryn L Fowler  25 Nathan Martchenke  25 Barrie S Rich  26 Richard D Glick  27 Erin G Brown  28 Kathleen Doyle  29 Paige Abril  29 Hannah N Rinehardt  2 Natashia M Seemann  30 Jacob Davidson  30 Claire A Wilson  30 Hau D Le  31 Devashish Joshi  32 Michael Stellon  32 Tamer Ahmed  33 Alexandra M Dimmer  33 Erika A Newman  34 Maya Hammoud  34 Keyonna Williams  34 Christa N Grant  35 Merit Gorgy  36 Stephanie F Polites  37 Julia Debertin  37 Danielle B Cameron  38 Alyssa Stetson  38 Eugene S Kim  39 William G Lee  39 Aaron Barkhordar  39 Mary T Austin  40 Brian A Coakley  41 Anastasia Kahan  42 Joseph T Murphy  43 Michael Pitonak  43 Chloé Boehmer  11 Elisabeth T Tracy  44
Affiliations
Multicenter Study

Contemporary Biology, Management, and Outcomes of Renal Medullary Carcinoma in Children and Adults: A Pediatric Surgical Oncology Research Collaborative Study

Catherine B Beckhorn et al. Pediatr Blood Cancer. 2025 Aug.

Abstract

Background: Renal medullary carcinoma (RMC) is an aggressive tumor associated with sickle cell trait. Despite treatment advances for other rare renal tumors, RMC survival remains poor. We aimed to describe the contemporary management and survival of children and adults with RMC.

Procedure: In this multicenter retrospective cohort study, Pediatric Surgical Oncology Research Collaborative sites searched their databases for patients diagnosed with RMC (2000-2022). Descriptive statistics were calculated and survival analyses performed using Kaplan-Meier and Cox regression.

Results: Thirty-four patients with RMC were identified. Median age was 19 years (IQR: 15-28; range: 7-52). Most were male (24/34; 71%), Black (27/32; 84%), had sickle cell trait or disease (30/33; 91%), presented with metastatic disease (27/34; 79%), and were symptomatic at presentation (32/34; 94%). Median overall survival (OS) was 24 months from diagnosis (16 months for children, 28 months for adults, p = 0.6). Receipt of platinum-based chemotherapy (23/34; 68%) was associated with significantly higher OS than other regimens (35 vs. 5 months, p < 0.001). Nephrectomy (24/34; 71%) was associated with significantly improved OS compared with non-operative management (34 vs. 7 months, p = 0.001). Immunotherapy, targeted therapy, or radiation therapy were not associated with significant differences in OS, nor were age, sex, race, sickle cell status, SMARCB1/INI-1, stage, nephrectomy approach, retroperitoneal lymph node dissection, gross residual disease, margins, or tumor size.

Conclusions: RMC survival remains poor despite newer therapies. Nephrectomy and platinum-based chemotherapy should be considered in locally advanced and metastatic disease. Coordinated international cooperative group studies are needed to meaningfully improve RMC survival.

Keywords: pediatric cancer; pediatric surgical oncology; renal cancer; renal medullary carcinoma; sickle cell.

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