Characteristics and outcomes of patients managed with surgical resection of brain metastasis from renal cell carcinoma.

Authors

null

Max Drescher

University of Maryland, Baltimore, MD

Max Drescher , Sunil H. Patel , Ridwan Alam , Claire De La Calle , Anirudh Yerrapragada , Chetan Bettegowda , Andres Matoso , Yasser Ged , Nirmish Singla

Organizations

University of Maryland, Baltimore, MD, James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, MD, Johns Hopkins, Baltimore, MD, Johns Hopkins Sidney Kimmel Comprehensive Cancer Center, Baltimore, MD, Johns Hopkins University, Baltimore, MD

Research Funding

No funding received

Background: For patients with metastatic renal cell carcinoma (mRCC), the presence of brain metastases (BM) confers a poor prognosis compared with alternative metastatic sites. Being an uncommon site of spread, granular data regarding BM in RCC is relatively sparse. We retrospectively reviewed the clinical features and outcomes of patients with surgically-resected BM from mRCC at our institution. Methods: Patients with mRCC and BM were identified within our institutional experience. Clinical and treatment data was obtained from electronic records. A diagnosis of mRCC to the brain was determined by pathological confirmation obtained via metastasectomy or rarely biopsy. Baseline patient demographics, clinicopathological disease characteristics and survival data were extracted. Overall survival (OS) was calculated from the date of BM intervention using Kaplan–Meier methods. Results: 54 patients were identified with surgically resected BM. Median age at RCC diagnosis was 58 years (IQR 49-67) and most patients were male (n = 39, 73%). 30 patients (56%) presented with de novo metastatic disease without any prior localized treatment, and most developed or presented with multiple metastatic sites. The most common histologic subtype was clear cell carcinoma (n = 51, 94%) and high grade disease was common (n = 39, 73%). The initial treatment of BM for the majority of patients was with neurosurgical resection (94%) followed by post-operative stereotactic radiosurgery (SRS) (87%) and systemic therapy (75%). For patients receiving systemic therapy, most received multiple agents (median 2, range 1-5). 32% of patients had received systemic therapy prior to developing BM. 19 patients (35%) received immune-checkpoint inhibitors. The median overall survival for patients from the date of neurosurgical intervention was 14.5 months (95% CI 9.2- 25 months). Conclusions: We present a large institutional series of patients with BM from mRCC treated with surgical resection. While BM remains a poor prognostic factor in mRCC, surgical resection in selected patients remains a viable strategy. Comprehensive molecular profiling of BM and their corresponding primary RCC tumors will shed light on biological tropism of this phenomenon and underscore prognostic and therapeutic implications.

Characteristic
N
%
Total patients
54

Median Age at diagnosis of RCC
58 (IQR 49-67)

Gender (male)
39
73%
ECOG Performance Status (0-1) at time of mRCC diagnosis
40
74%
Metastatic disease at diagnosis
30
56
Clear cell histology
51
94%
≥ 2 metastatic sites
49
91%

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Abstract Details

Meeting

2022 ASCO Genitourinary Cancers Symposium

Session Type

Poster Session

Session Title

Poster Session C: Renal Cell Cancer; Adrenal, Penile, Urethral, and Testicular Cancers

Track

Renal Cell Cancer,Adrenal Cancer,Penile Cancer,Testicular Cancer,Urethral Cancer

Sub Track

Other

Citation

J Clin Oncol 40, 2022 (suppl 6; abstr 392)

DOI

10.1200/JCO.2022.40.6_suppl.392

Abstract #

392

Poster Bd #

J11

Abstract Disclosures