Prognostic significance of degree of anemia in renal cell carcinoma.

2012 ◽  
Vol 30 (5_suppl) ◽  
pp. 469-469
Author(s):  
Mohammad Mozayen ◽  
Anteneh Tesfaye ◽  
Khalil Katato
Keyword(s):  
Renal Cell Carcinoma ◽  
Overall Survival ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Prognostic Significance ◽  
Hospital Setting ◽  
Disease Stage ◽  
Study Population ◽  
The Impact

469 Background: Anemia can precede the diagnosis of renal cell carcinoma (RCC). It has been well studied that it has a negative effect on the outcome of RCC. The impact of the severity of anemia on the overall all survival of patients with RCC is not well known. Our study examined the impact of severity of anemia on the overall survival of patients with RCC. Methods: We retrospectively reviewed 204 patients diagnosed with RCC between 1995 and 2008 in a community hospital setting. Patients with additional malignancies, lymphoma of the kidneys, with no follow up data or no preoperative Hemoglobin levels (Hg) measurement were excluded from the study. Demographics, preoperative complete blood count (CBC), pathology, disease stage, operative note, and subsequent follow up data were reviewed. Patients were grouped based on their preoperative Hg. Anemia was defined as Hg <12g/dl for females and <13g/dl for males. Patients were divided based on Hg to Group A (females with Hg<10 g/dl, males with Hg<11g/dl), group B (females with Hg 10-12 g/dl, males with Hg 11-13 g/dl), group C (females with Hg >12 g/dl, males with Hg >13g/dl). Last follow up date was used to calculate the 3 year overall survival for patients. The primary outcome was 3 year overall survival. Results: A total of 204 patients were reviewed, 127 (62.3%) were males, 176 (85.9%) were Caucasians. The median age of the study population was 65 (22-91). Clear Cell was the commonest histology (79%). Anemia was found in 90 (44.1%) patients. The median Hg was 12.8 g/dl (Range: 7.2-18.2). Anemia was present in 41.8% of females and 46.2% of males. The median Hg level for stages I, II, III, IV were (13.05, 12.45, 12.45, 11.45) respectively. The 3 year overall survival for the study population was 67.3% (95% CI: 60.4-73.7). The 3-year overall survival for anemic patients was 51.2% (95% CI: 40-61) compared to 81.6% (95% CI: 72-87) in non anemic (p<0.0001). The 3-year overall survival significantly decreased with Hg levels, as shown by the Groups A (33.3%), B (60.7%), and C (81.6%) (p<0.0001). Conclusions: Our finding was consistent with other studies in portraying anemia as a negative prognostic factor in patients with renal cell carcinoma. Our study also showed that the severity of anemia corresponds to poorer overall patients survival.

Does obesity affect the outcome of renal cell carcinoma?

2012 ◽  
Vol 30 (5_suppl) ◽  
pp. 444-444
Author(s):  
Mohammad Mozayen ◽  
Anteneh Tesfaye ◽  
Khalil Katato
Keyword(s):  
Renal Cell Carcinoma ◽  
Overall Survival ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Community Hospital ◽  
Prognostic Significance ◽  
Disease Stage ◽  
Increased Risk ◽  
Study Population

444 Background: Obesity has been associated with increased risk of renal cell carcinoma (RCC). However the prognostic significance of obesity in the survival of patients with RCC is still undefined. Our study examined prognostic significance of obesity on the overall survival of patients (pts) with RCC in community hospital settings. Methods: A retrospective review of pts diagnosed with RCC between 1995 and 2008 in a community hospital setting was done. Pts with additional malignancies, lymphoma of the kidneys and no follow up data were excluded from the study. Demographics, body mass index(BMI) at diagnoses, pathology, disease stage, operative note, and subsequent follow up data were reviewed. The WHO BMI classification was used to group pts into Underweight (UW) < 18.5; Normal (NL): 18.5-24.99; Pre-obese (PO): 25-29.99; Obese I (Ob I): 30-34.99; Obese II (Ob II): 35-39.99; Obese III (Ob III): ≥40. The primary outcome was 3 years overall survival. Results: A total Of 205 pts reviewed, 127 (62.3%) were males, 176 (85.9%) were Caucasians. The median age of the study population was 65 (22-91). The prevalence of obesity was 42.3% in the study population; 46.2% in females and 39% in males (p=0.19). The median BMI was 28.8 (16-54.6). Pts were categorized based on their BMI as: UW (1.5%), NL (21.4%), PO (34.7%), Ob I (26%), Ob II (8.2%), and Ob III (8.2%). Clear Cell was the commonest histology (79%). Stage I was seen in 53.9%, II in 23.5%, III in 13.7% and IV in 8.8% of the study population. The 3 year overall survival for the study population was 67.3% (95% CI: 60.4-73.7). The 3-year overall survival of obese and non obese pts with RCC were 66.4% and 69.5% respectively (p=0.34). There was no difference in the 3-year overall survival of patient in the BMI groupings: (UW: 66.7%, NW: 59%, Pre-Ob: 70.6%, Obese I: 70%, II: 75%, III: 62.5%; p=0.8). Conclusions: Our study didn’t find any association between BMI and 3 year overall survival in pts with RCC. Larger randomized trials are warranted before excluding the negative impact of obesity in the overall survival of pts with renal cell carcinoma.

Lymphopenia as a prognostic factor in renal cell carcinoma.

2012 ◽  
Vol 30 (5_suppl) ◽  
pp. 470-470
Author(s):  
Mohammad Mozayen ◽  
Anteneh Tesfaye ◽  
Khalil Katato
Keyword(s):  
Renal Cell Carcinoma ◽  
Overall Survival ◽  
African Americans ◽  
Prognostic Factor ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Blood Count ◽  
Complete Blood Count ◽  
Study Population

470 Background: Lymphopenia is known to be a negative prognostic marker for NHL and hematological malignancies, recent observational studies evaluated the presence of lymphopenia and its impact in solid tumor like colon, lung and pancreatic cancer. We aim to assess the effect of Lymphopenia at the renal cell carcinoma (RCC) survival. Methods: A retrospective review of 207 patients diagnosed with RCC between 1995 and 2008 in a community hospital setting was done. Patients with additional malignancies, lymphoma of the kidneys, with no follow up data or no preoperative complete blood count test were excluded. Demographics, preoperative complete blood count, pathology, disease stage, operative note, and subsequent follow up data were reviewed. Lymphopenia was defined as absolute lymphocytic count < 1200/µl. Last follow up date was used to calculate the 3 year overall survival. The primary outcome was 3 year overall survival. Results: A total of 207 patients were included in the study. Caucasians were 176(85.9%), African Americans were 13.7% and Asians were 1(0.5%). Males (M) were 127 (62.3%) and females (F) were 77(37.7%). The median age of the study population was 65 (22-91. Clear cell histology was seen in 79%. Stage I was seen in 53.9%, II in 23.5%, III in 13.7% and IV in 8.8% of the study population. Lymphopenia was seen in 81 (40%) patients (95 CI 34-48). Lymphopenia was seen in 31.8% of stage I; 50% of stage II, 41.4% of stage III, and 65% of stage IV patients (p=0.017). Lymphopenia was seen in 28.6% of African Americans and 42.7% of Caucasians (p=0.11). Lymphopenia was seen in 32.1% of females and 45.7% of males (p=0.03). The 3 year overall survival for the study population was 67.3% (95% CI: 60.4-73.7). The 3-year overall survival for patients with lymphopenia was 60.5%, compared to 73.6% in non-lymphopenic patients (p=0.04). Conclusions: Lymphopenia was seen to be higher among males and Caucasians, more frequently at advanced stage at diagnosis. Patients with lymphopenia were observed to have significantly worse survival when compared to patients with normal lymphocytic count in RCC. We conclude that lymphopenia is considered as a negative prognostic factor for RCC, and needed to be studied in the correlation of other known prognostic factors.

Sarcomatoid Renal Cell Carcinoma: Biologic Behavior, Prognosis, and Response to Combined Surgical Resection and Immunotherapy

1999 ◽  
Vol 17 (2) ◽  
pp. 523-523 ◽  
Author(s):  
Thomas Cangiano ◽  
Joseph Liao ◽  
John Naitoh ◽  
Frederick Dorey ◽  
Robert Figlin ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Overall Survival ◽  
Multivariate Analysis ◽  
Cell Carcinoma ◽  
Surgical Resection ◽  
Median Duration ◽  
Renal Cell ◽  
High Dose ◽  
Risk Of Death

PURPOSE: Sarcomatoid variants of renal cell carcinoma (RCC) are aggressive tumors that respond poorly to immunotherapy. We report the outcomes of 31 patients with sarcomatoid RCC treated with a combination of surgical resection and immunotherapy. PATIENTS AND METHODS: Patients were identified from the database of the University of California Los Angeles Kidney Cancer Program. We retrospectively reviewed the cases of 31 consecutive patients in whom sarcomatoid RCC was diagnosed between 1990 and 1997. Clinical stage, sites of metastasis, pathologic stage, and type of immunotherapy were abstracted from the medical records. The primary end point analyzed was overall survival, and a multivariate analysis was performed to distinguish any factors conferring an improved survivorship. RESULTS: Twenty-six percent of patients were male and 74% were female, and the median age was 59 years (range, 34 to 73 years). Length of follow-up ranged from 2 to 77 months (mean, 21.4 months). Twenty-eight patients (84%) had known metastases at the time of radical nephrectomy (67% had lung metastases and 40% had bone, 21% had liver, 33% had lymphatic, and 15% had brain metastases). Twenty-five patients (81%) received immunotherapy, including low-dose interleukin (IL)-2–based therapy (five patients), tumor-infiltrating lymphocyte–based therapy plus IL-2 (nine patients), high-dose IL-2–based therapy (nine patients), dendritic cell vaccine–based therapy (one patient), and interferon alpha–based therapy alone (one patient). Two patients (6%) achieved complete responses (median duration, 46+ months) and five patients (15%) achieved partial responses (median duration, 36 months). One- and 2-year overall survival rates were 48% and 37%, respectively. Using a multivariate analysis, age, sex, and percentage of sarcomatoid tumor (< or > 50%) did not significantly correlate with survival. Improved survival was found in patients receiving high-dose IL-2 therapy compared with patients treated with surgery alone or any other form of immunotherapy (P = .025). Adjusting for age, sex, and percentage of sarcomatoid tumor, the relative risk of death was 10.4 times higher in patients not receiving high-dose IL-2 therapy. Final pathologic T stage did not correlate significantly with outcome, but node-positive patients had a higher death rate per year of follow-up than did the rest of the population (1.26 v 0.76, Cox regression analysis). CONCLUSION: Surgical resection and high-dose IL-2–based immunotherapy may play a role in the treatment of sarcomatoid RCCs in select patients.

scholarly journals Age at diagnosis is a determinant factor of renal cell carcinoma– specific survival in patients treated with nephrectomy

2008 ◽  
Vol 2 (6) ◽  
pp. 610 ◽  
Author(s):  
Pierre I. Karakiewicz ◽  
Claudio Jeldres ◽  
Nazareno Suardi ◽  
George C. Hutterer ◽  
Paul Perrotte ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Cox Regression ◽  
Prognostic Significance ◽  
Cubic Spline ◽  
Age At Diagnosis ◽  
Fuhrman Grade ◽  
Effect Of Age

Objective: Based on combined data for 4880 patients, 2 previous studies reported that advanced age is a predictor of increased renal cell carcinoma–specific mortality (RCC-SM). We explored the effect of age in cubic spline analyses to identify the age groups with the most elevated risk for renal cell carcinoma (RCC).Methods: Our study included 3595 patients from 14 European centres who had partial or radical nephrectomies. We used the Kaplan–Meier method to compile life tables, and we performed Cox regression analyses to assess RCC-SM. Covariates included age at diagnosis, sex, TNM (tumour, node, metastasis) stage, tumour size, Fuhrman grade, symptom classification and histological subtype.Results: Age ranged from 10 to 89 (mean 63, median 67) years. The median duration of follow-up was 2.9 years. The median survival for the cohort was 13.4 years. Stage distribution was as follows: 1915 patients (53.3%) had stage I disease, 388 (10.8%) had stage II, 895 (24.9%) had stage III and 397 (11.0%) had stage IV disease. In multivariate analyses, we coded age at diagnosis as a cubic spline, and it achieved independent predictor status (p < 0.001). The risk of RCC-SM was lowest among patients younger than 50 years. We observed an increase in RCC-SM until the age of 50, at which point the level of risk reached a plateau. We observed a second increase among patients aged 75–89 years. We found similar patterns when we stratified patients according to the 2002 American Joint Committee on Cancer (AJCC) stages.Conclusion: The effect of age shows prognostic significance and indicates that follow-up and possibly secondary treatments might need to be adjusted according to the age of the patient.

scholarly journals Significance of Chromosome 9p Status in Renal Cell Carcinoma: A Systematic Review and Quality of the Reported Studies

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Ismail El-Mokadem ◽  
John Fitzpatrick ◽  
Bhavan Rai ◽  
J. Cunningham ◽  
Norman Pratt ◽  
...  
Keyword(s):  
Systematic Review ◽  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Clinical Decision Making ◽  
Cell Cancer ◽  
Prognostic Significance ◽  
Clinical Applicability ◽  
Genetic Techniques

Defining the prognosis of renal cell carcinoma (RCC) using genetic tests is an evolving area. The prognostic significance of 9p status in RCC, although described in the literature, remains underutilised in clinical practice. The study explored the causes of this translational gap. A systematic review on the significance of 9p status in RCC was performed to assess its clinical applicability and impact on clinical decision-making. Medline, Embase, and other electronic searches were made for studies reporting on 9p status in RCC. We collected data on: genetic techniques, pathological parameters, clinical outcomes, and completeness of follow-up assessment. Eleven studies reporting on 1,431 patients using different genetic techniques were included. The most commonly used genetic technique for the assessment of 9p status in RCC was fluorescence in situ hybridization. Combined genomic hybridisation (CGH), microsatellite analysis, karyotyping, and sequencing were other reported techniques. Various thresholds and cut-off values were used for the diagnosis of 9p deletion in different studies. Standardization, interobserver agreement, and consensus on the interpretation of test remained poor. The studies lacked validation and had high risk of bias and poor clinical applicability as assessed by two independent reviewers using a modified quality assessment tool. Further protocol driven studies with standardised methodology including use of appropriate positive and negative controls, assessment of interobserver variations, and evidenced based follow-up protocols are needed to clarify the role of 9p status in predicting oncological outcomes in renal cell cancer.

Prognostic factors for the recurrence of renal cell carcinoma after radical nephrectomy

2006 ◽  
Vol 24 (18_suppl) ◽  
pp. 14629-14629
Author(s):  
C. H. Ohlmann ◽  
T. Schneider ◽  
S. Wille ◽  
U. Engelmann ◽  
A. Heidenreich
Keyword(s):  
Renal Cell Carcinoma ◽  
Prognostic Factors ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Radical Nephrectomy ◽  
Prognostic Significance ◽  
Flank Pain ◽  
Time Of Surgery ◽  
Asymptomatic Patients

14629 Background: Recurrence of renal cell carcinoma depends mainly on tumor stage at the time of radical nephrectomy and increases with increasing T-stage. Up to 30% of patients with T1–2 tumors will experience local or distant recurrence. Recommendations for the follow-up include chest x-ray every 6 months for stages T1–4 and abdominal CT-scan for pT3–4 for the first 3 years. The aim of our study was to identify prognostic factors predicting recurrence of RCC in order to individualize follow up strategies. Methods: We retrospectively analyzed the charts of 177 patients with RCC who underwent radical nephrectomy. In 163/177 (92%) of the patients the histology revealed renal cell carcinoma. The median-follow up was 4.5 (1–6) years. The prognostic significance of histology, gender, age, c-reactive protein, hemoglobin, hematuria, gross hematuria, weight loss, flank pain and metastases at the time of surgery for risk of recurrence was calculated by uni- and multivariate analysis. Cancer specific survival (CSS) was analyzed by the Kaplan-Meir method. Results: Logistic regression analysis identified presence of metastases at time of surgery (p ≤ 0.0005), hematuria (p ≤ 0.0005) and flank pain (p = 0.011) as independent prognostic factors for the recurrence of RCC. The risk of recurrent disease is 33.5% with one, 70 to 83% with two and 95.6% with the presence of all 3 markers. 3-year CSS is 69% vs. 82% in symptomatic vs. asymptomatic patients (p = 0.1352), 45% vs. 90% in M1/N1 vs. M0/N0 (p = 0.0001) and 78% vs. 88% in pT3b vs. <pT3b (p = 0.0102). Conclusions: In our study we were able to identify prognostic factors for the recurrence of renal cell carcinoma. Based on this model the follow-up of patients can be individualized according to the risk for recurrence after radical nephrectomy. No significant financial relationships to disclose.

Recurrence and survival following preoperative sorafenib for advanced renal cell carcinoma.

2011 ◽  
Vol 29 (7_suppl) ◽  
pp. 384-384
Author(s):  
K. Rathmell ◽  
C. L. Cowey ◽  
G. Grigson ◽  
C. Watkins ◽  
E. Wallen ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Stage Iv ◽  
Preoperative Therapy ◽  
Advanced Renal Cell Carcinoma ◽  
Prolonged Treatment ◽  
Stage Iv Disease ◽  
The Impact

384 Background: The impact of neoadjuvant or preoperative therapy in the setting of advanced renal cell carcinoma on recurrence-free or survival outcomes is not known. Methods: 28 patients with renal cell carcinoma were treated with preoperative sorafenib in a prospective pilot study (LCCC 0603). Patient files were reviewed a median of 885 days (2.42 years) following nephrectomy. Records were evaluated for 13 patients with nonmetastatic disease for development of recurrence, and for 15 patients with stage IV disease for survival. Results: For the nonmetastatic patients, only 2 patients had developed recurrent disease, one underwent metastectomy and remains in surveillance and the other is on second line systemic targeted therapy. A median recurrence-free survival has not been met after a median 2.5 years. For stage IV disease patients at a median follow up of 2.3 years, a median survival has also not been reached. Four patients are deceased, one patient is lost to follow up, and 10 remain alive. Treatments for metastatic disease included continued sorafenib, high dose interleukin-2, sunitinib, pazopanib, temsirolimus, and everolimus. Some stage IV patients have also enjoyed prolonged treatment-free intervals ranging from six months to over two years, with biopsy confirmed, but indolent disease. Conclusions: Although these data are descriptive, these observations are suggestive that preoperative therapy with sorafenib is unlikely to accelerate the growth of grossly metastatic or micrometastatic disease. Further studies are needed to determine whether preoperative therapy is valuable in improving recurrence-free or overall survival endpoints. [Table: see text]

Prognostic value of loss of chromosome 10q in patients with localized renal cell carcinoma.

2019 ◽  
Vol 37 (7_suppl) ◽  
pp. 626-626
Author(s):  
Cedric Michel Lebacle ◽  
Aydin Pooli ◽  
Nagesh Rao ◽  
Erika Louise Wood ◽  
Nils Kroeger ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Tumor Size ◽  
Renal Cell ◽  
Prognostic Significance ◽  
Disease Free Survival ◽  
Chromosome 10Q ◽  
Risk Of Death ◽  
T Stage ◽  
The Impact

626 Background: Several tumor-suppressor genes have been mapped to chromosome 10q, including PTEN. While loss of 10q is a frequently seen cytogenetic abnormality noted to occur in patients with renal cell carcinoma (RCC), little is known about its prognostic significance. We investigated the association of loss of 10q with pathological features and disease-free survival (DFS) in patients with localized RCC. Methods: All patients from UCLA with primary localized RCC who had tumor cytogenetic analysis were included. Alterations in chromosome 10q was specifically reviewed for this study. Logistic regression analyses were used to assess association of loss of 10q with ISUP grading, and T-stage. Cox proportional hazard modeling and Kaplan-Meier analyses were used to assess the impact of loss of 10q on DFS and OS. Recurrence was defined as any local recurrence or development of new metastasis after surgery. Results: A total of 886 patients were included in this study. Loss of 10q occurred in 68 (7.7%) patients and was more commonly seen in chromophobe subtype (24% vs. 6% in non-chromophobe RCC, p < .0001). Loss of 10q was associated with greater tumor size (mean 6.3 vs 5.1 cm, OR = 1.085 [1.024-1.150], p = .008), T3-stage (37% vs 23%, OR = 1.99 [1.17-3.39], p = .011), and ISUP 3-4 (61% vs 37%, OR = 2.64 [1.58-4.40], p < .0001). On survival analysis, after a mean follow-up of 55 months, these patients had a shorter time to recurrence (Log-rank p = .026) and a worse DFS (HR = 2.15 [1.32-3.50], p = .002) than those without loss of 10q. These findings were confirmed on clear-cell RCC subgroup with also a worse OS (HR = 2.00 [1.09-3.67], p = .026) with an estimated 34% risk of death at 5 years for patients with loss of 10q. Conclusions: Loss of chromosome 10q is a prognostic factor associated with larger tumor size, higher grade and T-stage, and worse survival in patients with localized RCC. Identifying patients with loss of 10q can provide additional prognostic information to clinicopathologic variables.

scholarly journals Variation in gene encoding the co-inhibitory molecule BTLA is associated with survival in patients treated for clear cell renal carcinoma – results of a prospective cohort study

2021 ◽  
Author(s):  
Krzysztof Tupikowski ◽  
Anna Partyka ◽  
Edyta Pawlak ◽  
Kuba Ptaszkowski ◽  
Romuald Zdrojowy ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Overall Survival ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Clear Cell ◽  
T Cell Response ◽  
Disease Stage ◽  
Tumor Diameter ◽  
Gene Encoding ◽  
Cell Renal Cell Carcinoma

IntroductionThe successful introduction of immune checkpoint blockade approaches to renal-cell carcinoma (RCC) treatment indicates the importance of molecules regulating the T cell response to RCC risk and progression.Material and methodsIn this study, we evaluate the association of variations in the CTLA-4, BTLA and CD28 genes with overall survival (OS) of RCC patients and specifically clear cell RCC (ccRCC) patients. The following previously genotyped using RFLP method or TaqManSNP Genotyping Assays single nucleotide polymorphisms (SNPs) were analyzed: CTLA-4 gene: c.49A>G (rs231775), g.319C>T (rs5742909), g.*6230G>A (CT60; rs3087243), g.*10223G>T (Jo31; rs11571302); CD28 gene: c.17+3T>C (rs3116496), c.-1042G>A (rs3181098); BTLA gene: rs2705511, rs1982809, rs9288952, rs9288953, rs2705535 and rs1844089.ResultsDuring long term observation (6.5 years) we discovered that possessing of A allele at BTLA rs1844089 SNP, together with advanced disease (stage >3, tumor grade >3, tumor diameter ≥70mm), is an independent risk factor of death which increases the HR (hazard ratio) of death by more than two-fold (HR=2.21, 95%CI 1.28-3.83). Furthermore, the OS of patients bearing this allele is 6 months shorter than for homozygous [GG] patients (42.5 vs. 48.2 months).ConclusionsOur results indicate for the first time that genetic variation within the gene encoding the BTLA is significantly associated with overall survival in clear cell renal cell carcinoma patients.

Overall survival and response to radiation and targeted therapies among patients with renal cell carcinoma brain metastases

2020 ◽  
Vol 132 (1) ◽  
pp. 188-196 ◽  
Author(s):  
Aditya Juloori ◽  
Jacob A. Miller ◽  
Shireen Parsai ◽  
Rupesh Kotecha ◽  
Manmeet S. Ahluwalia ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Overall Survival ◽  
Multivariate Analysis ◽  
Cell Carcinoma ◽  
Targeted Therapies ◽  
Cumulative Incidence ◽  
Renal Cell ◽  
Radiation Necrosis ◽  
Local Failure ◽  
The Impact

OBJECTIVEThe object of this retrospective study was to investigate the impact of targeted therapies on overall survival (OS), distant intracranial failure, local failure, and radiation necrosis among patients treated with radiation therapy for renal cell carcinoma (RCC) metastases to the brain.METHODSAll patients diagnosed with RCC brain metastasis (BM) between 1998 and 2015 at a single institution were included in this study. The primary outcome was OS, and secondary outcomes included local failure, distant intracranial failure, and radiation necrosis. The timing of targeted therapies was recorded. Multivariate Cox proportional-hazards regression was used to model OS, while multivariate competing-risks regression was used to model local failure, distant intracranial failure, and radiation necrosis, with death as a competing risk.RESULTSThree hundred seventy-six patients presented with 912 RCC BMs. Median OS was 9.7 months. Consistent with the previously validated diagnosis-specific graded prognostic assessment (DS-GPA) for RCC BM, Karnofsky Performance Status (KPS) and number of BMs were the only factors prognostic for OS. One hundred forty-seven patients (39%) received vascular endothelial growth factor receptor (VEGFR) tyrosine kinase inhibitors (TKIs). Median OS was significantly greater among patients receiving TKIs (16.8 vs 7.3 months, p < 0.001). Following multivariate analysis, KPS, number of metastases, and TKI use remained significantly associated with OS.The crude incidence of local failure was 14.9%, with a 12-month cumulative incidence of 13.4%. TKIs did not significantly decrease the 12-month cumulative incidence of local failure (11.4% vs 14.5%, p = 0.11). Following multivariate analysis, age, number of BMs, and lesion size remained associated with local failure. The 12-month cumulative incidence of radiation necrosis was 8.0%. Use of TKIs within 30 days of SRS was associated with a significantly increased 12-month cumulative incidence of radiation necrosis (10.9% vs 6.4%, p = 0.04).CONCLUSIONSUse of targeted therapies in patients with RCC BM treated with intracranial SRS was associated with improved OS. However, the use of TKIs within 30 days of SRS increases the rate of radiation necrosis without improving local control or reducing distant intracranial failure. Prospective studies are warranted to determine the optimal timing to reduce the rate of necrosis without detracting from survival.

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