Responses of Renal Cell Carcinomas to 29 Anti-Cancer Therapies
Responses of Renal Cell Carcinomas to 29 Different Systemic Anti-Cancer Therapies
Authors: Noa Goffir1, Vladimir Yurtin1, Mordechai Duduvden1, Guy Hidas1, Steve Frank2, Yakir Rottenberg1
Affiliations:
1. Department of Urology, Hebrew University of Jerusalem, Hadassah Medical Center, Faculty of Medicine
2. Department of Radiology, Hebrew University of Jerusalem, Hadassah Medical Center, Faculty of Medicine
Published: 31 July 2025
CITATION:Goffir, N., Yurtin, V., Duduvden, M., Hidas, G., Frank, S., Rottenberg, Y. (2025). Responses of Renal Cell Carcinomas to 29 Different Systemic Anti-Cancer Therapies. The European Society of Medicine, Medical Research Archives, Volume 13 Issue 7.
COPYRIGHT: © 2025 European Society of Medicine. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
DOI: https://doi.org/10.18103/mra.v13i7.6752
ISSN 2375-1924
Abstract
The prevailing view is that renal cell carcinomas (RCCs) are resistant to chemotherapy. However, it is essential to periodically reassess the effectiveness of systemic therapies that have been previously considered to be unsustainable in treating RCC. Our study aimed to evaluate the response rates of RCCs to various systemic therapies.
Keywords
renal cell carcinoma, systemic therapy, anti-cancer therapies, chemotherapy resistance
Introduction
Over a third of patients with renal cell carcinoma (RCC) present with metastatic disease or develop metastases after surgery for an apparently localized disease. The prognosis for these patients is grim.
RCC is considered chemoresistant. In the metastatic setting, its response to single or combined chemotherapy agents has been examined in several phase III studies. Single agents, including vinca alkaloids, gemcitabine, and fluoropyrimidine derivatives, have shown an objective response rate (ORR) of 0-20%. One study reported an ORR of 26% with acceptable toxicity. Combination chemotherapy, typically involving gemcitabine and fluorouracil, has not been shown to provide any meaningful benefit.
Four patients received immunotherapy, including anti-PD-1 and anti-PD-L1 agents, with an ORR of 50%. The objective response rate was calculated by subtracting the tumor’s largest diameter in the initial CT (mm) from the largest diameter on the last CT (mm), divided by the time elapsed between the studies (in years). Diameter changes within a 3 mm range were classified as “no change”. The research was approved by the institutional review board.
Methods
Patient demographics, types of malignancy, and treatment regimens were recorded and compared with the measurements taken at the follow-up period. Renal pathological specimens were evaluated using the 2002 TNM classification, histologic subclassing according to the 1997 UICC classification, and grading based on Fuhrman’s nuclear grading system.
| Num | Age | Sex | Charlson Comorbidity Index | Metastasis? | Other malignancy type | Treatment regimen |
|---|---|---|---|---|---|---|
| 1 | 57 | F | 7 | Y | Breast Cancer | trastuzumab, pertuzumab |
| 2 | 68 | M | 6 | Y | Diffuse large B-cell lymphoma | CHOP, rituximab |
| 3 | 56 | M | 4 | Y | Gastric adenocarcinoma | capecitabine |
| 4 | 68 | M | 7 | Y | Lung adenocarcinoma | cisplatin, Vinorelbine |
| Num | Histology | Follow-up of RCC | Kidney Status | Last follow-up status |
|---|---|---|---|---|
| 1 | Clear F1 | Partial nephrectomy | 131 | Alive |
| 2 | Clear F2 | Radical nephrectomy | 123 | Died Lymphoma |
| 3 | Clear F2 | Not treated | 97 | Died NED |
| 4 | Papillary | Not treated | 90 | Alive NED |
| Diameter 1 (mm) | Diameter 2 (mm) | Time difference (months) | Growth rate (mm/year) |
|---|---|---|---|
| 1 | 42.3 | 12 | 4.2 |
| 2 | 43.5 | 6 | 10.5 |
| 3 | 50.1 | 8 | 7.5 |

Results
These growth rates suggest that untreated RCC, as well as those treated with various systemic therapies, can exhibit significant variability in tumor response. In total, we analyzed 234 patients with untreated RCC and hemato-oncologic malignancies, showing a 10% mortality rate, which is significantly higher than that of patients with non-clear cell metastatic renal cell carcinoma. In any case, careful monitoring and addressing the RCC appears to be appropriate.
Discussion
In four patients, RCC diameter remained stable during follow-up, and in two patients, it decreased. The most significant cause of shrinkage involved a 50-year-old woman with metastatic breast cancer and a 63 mm Fuhrman grade 2 clear cell carcinoma.
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