Open Access

Radiographical efficacy of systemic treatment for bone metastasis from renal cell carcinoma

  • Authors:
    • Takahito Negishi
    • Nobuki Furubayashi
    • Dai Takamatsu
    • Kousuke Ieiri
    • Naotaka Nishiyama
    • Hiroshi Kitamura
    • Motonobu Nakamura
  • View Affiliations

  • Published online on: September 21, 2020     https://doi.org/10.3892/ol.2020.12130
  • Article Number: 267
  • Copyright: © Negishi et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Enlarged bone metastasis from renal cell carcinoma (RCC) can cause skeletal‑related events, and thus treatment to inhibit the growth of bone metastases is often required. Although radiotherapy for RCC bone metastases can achieve a certain degree of local control, evidence is lacking regarding the effects of systemic therapy to improve bone metastasis. The present study aimed to assess the treatment efficacy of targeted therapy and immune checkpoint inhibitors, and to determine whether systemic therapy without radiotherapy can shrink bone metastases of RCC. The present study retrospectively reviewed 44 patients with RCC with bone metastases treated via systemic therapy, including targeted therapy or immune checkpoint inhibitors. Patients were divided into two groups: Those who underwent systemic therapy with radiotherapy for bone lesions (n=29); and those who underwent systemic therapy without radiotherapy for bone lesions (n=15). The radiographical efficacy of systemic therapy and the time to progression of bone metastases were compared between groups. The overall response rate of systemic therapy with radiotherapy was 44%, and in total, 13 patients demonstrated a partial response. Only one patient (6%) had a partial response among those who were treated via systemic therapy without radiotherapy. The time to progression of bone metastasis was 9.5 and 2.1 months in patients treated with and without radiotherapy, respectively (P<0.0001). Collectively, the present results suggested that targeted therapy or immune checkpoint inhibitors without radiotherapy had only a slight effect on bone metastasis control.
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November-2020
Volume 20 Issue 5

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Negishi T, Furubayashi N, Takamatsu D, Ieiri K, Nishiyama N, Kitamura H and Nakamura M: Radiographical efficacy of systemic treatment for bone metastasis from renal cell carcinoma. Oncol Lett 20: 267, 2020
APA
Negishi, T., Furubayashi, N., Takamatsu, D., Ieiri, K., Nishiyama, N., Kitamura, H., & Nakamura, M. (2020). Radiographical efficacy of systemic treatment for bone metastasis from renal cell carcinoma. Oncology Letters, 20, 267. https://doi.org/10.3892/ol.2020.12130
MLA
Negishi, T., Furubayashi, N., Takamatsu, D., Ieiri, K., Nishiyama, N., Kitamura, H., Nakamura, M."Radiographical efficacy of systemic treatment for bone metastasis from renal cell carcinoma". Oncology Letters 20.5 (2020): 267.
Chicago
Negishi, T., Furubayashi, N., Takamatsu, D., Ieiri, K., Nishiyama, N., Kitamura, H., Nakamura, M."Radiographical efficacy of systemic treatment for bone metastasis from renal cell carcinoma". Oncology Letters 20, no. 5 (2020): 267. https://doi.org/10.3892/ol.2020.12130