Symptomatic skeletal-related events in patients receiving longer term bone-modifying agents for bone metastases from breast and castration resistant prostate cancers.


Journal

Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer
ISSN: 1433-7339
Titre abrégé: Support Care Cancer
Pays: Germany
ID NLM: 9302957

Informations de publication

Date de publication:
May 2022
Historique:
received: 29 06 2021
accepted: 18 11 2021
pubmed: 22 1 2022
medline: 26 3 2022
entrez: 21 1 2022
Statut: ppublish

Résumé

The effect of longer-term use of bone-modifying agent (BMA) on symptomatic skeletal event (SSE) rates in patients with bone metastases remains unclear. This retrospective study of a cohort of patients in a randomized controlled trial evaluated SSEs in patients receiving BMAs at a single cancer center. Data from patients with metastatic breast and castration-resistant prostate cancer (CRPC) were interrogated to evaluate the effects of longer-term use of BMAs on incidence, type, and risk factors for SSEs. Of 162 patients, 109 (67%) had breast cancer (BC) and 53 (33%) CRPC. Median age at diagnosis of bone metastases was 61.9 years (range 27.5-97.2) for BC patients and 72.1 (range 37.0-92.2) for CRPC patients. Median duration of BMA use was 2.3 years (range 0.1-9.9 years) for BC and 3.8 years (range 1.5-9.4) for CRPC patients. The initial BMAs in BC patients were pamidronate (46.8%), denosumab (31.2%), and zoledronate (22%). All CRPC patients received denosumab. During follow-up, 59% of BC and 75% of CRPC patients had at least one SSE. The number of patients experiencing ≥ 1 SSE per year was higher in the first year after bone metastasis diagnosis (63/162; 38.9%) compared with that in the second (26/149; 17.5%) and third years (30/123; 24.4%). Neither age, visceral disease, multiple bone metastases, nor biological markers for BC had a significant impact on time to first SSE. The risk for SSEs was greatest in the first year after diagnosis of bone metastasis. Studies evaluating de-escalation and even stopping of BMAs with longer-term use may therefore be warranted.

Sections du résumé

BACKGROUND BACKGROUND
The effect of longer-term use of bone-modifying agent (BMA) on symptomatic skeletal event (SSE) rates in patients with bone metastases remains unclear. This retrospective study of a cohort of patients in a randomized controlled trial evaluated SSEs in patients receiving BMAs at a single cancer center.
METHODS METHODS
Data from patients with metastatic breast and castration-resistant prostate cancer (CRPC) were interrogated to evaluate the effects of longer-term use of BMAs on incidence, type, and risk factors for SSEs.
RESULTS RESULTS
Of 162 patients, 109 (67%) had breast cancer (BC) and 53 (33%) CRPC. Median age at diagnosis of bone metastases was 61.9 years (range 27.5-97.2) for BC patients and 72.1 (range 37.0-92.2) for CRPC patients. Median duration of BMA use was 2.3 years (range 0.1-9.9 years) for BC and 3.8 years (range 1.5-9.4) for CRPC patients. The initial BMAs in BC patients were pamidronate (46.8%), denosumab (31.2%), and zoledronate (22%). All CRPC patients received denosumab. During follow-up, 59% of BC and 75% of CRPC patients had at least one SSE. The number of patients experiencing ≥ 1 SSE per year was higher in the first year after bone metastasis diagnosis (63/162; 38.9%) compared with that in the second (26/149; 17.5%) and third years (30/123; 24.4%). Neither age, visceral disease, multiple bone metastases, nor biological markers for BC had a significant impact on time to first SSE.
CONCLUSIONS CONCLUSIONS
The risk for SSEs was greatest in the first year after diagnosis of bone metastasis. Studies evaluating de-escalation and even stopping of BMAs with longer-term use may therefore be warranted.

Identifiants

pubmed: 35059864
doi: 10.1007/s00520-021-06714-8
pii: 10.1007/s00520-021-06714-8
doi:

Substances chimiques

Zoledronic Acid 6XC1PAD3KF

Types de publication

Journal Article Randomized Controlled Trial

Langues

eng

Sous-ensembles de citation

IM

Pagination

3977-3984

Informations de copyright

© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

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Auteurs

Mashari Alzahrani (M)

Department of Medicine, Division of Medical Oncology, The Ottawa Hospital, University of Ottawa, 501 Smyth Road, Ottawa, Canada.

Carol Stober (C)

Cancer Therapeutics Program, Ottawa Hospital Research Institute, Ottawa, Canada.

Michelle Liu (M)

Cancer Therapeutics Program, Ottawa Hospital Research Institute, Ottawa, Canada.

Arif Awan (A)

Department of Medicine, Division of Medical Oncology, The Ottawa Hospital, University of Ottawa, 501 Smyth Road, Ottawa, Canada.

Terry L Ng (TL)

Department of Medicine, Division of Medical Oncology, The Ottawa Hospital, University of Ottawa, 501 Smyth Road, Ottawa, Canada.

Gregory Pond (G)

Department of Oncology, McMaster University, Hamilton, Canada.

Bader Alshamsan (B)

Department of Medicine, Division of Medical Oncology, The Ottawa Hospital, University of Ottawa, 501 Smyth Road, Ottawa, Canada.

Lisa Vandermeer (L)

Cancer Therapeutics Program, Ottawa Hospital Research Institute, Ottawa, Canada.

Mark Clemons (M)

Department of Medicine, Division of Medical Oncology, The Ottawa Hospital, University of Ottawa, 501 Smyth Road, Ottawa, Canada. mclemons@toh.ca.
Cancer Therapeutics Program, Ottawa Hospital Research Institute, Ottawa, Canada. mclemons@toh.ca.

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