Factors associated with prolonged overall survival in patients with postmenopausal estrogen receptor-positive advanced breast cancer using real-world data: a follow-up analysis of the JBCRG-C06 Safari study.


Journal

Breast cancer (Tokyo, Japan)
ISSN: 1880-4233
Titre abrégé: Breast Cancer
Pays: Japan
ID NLM: 100888201

Informations de publication

Date de publication:
May 2020
Historique:
received: 24 06 2019
accepted: 28 11 2019
pubmed: 8 12 2019
medline: 3 2 2021
entrez: 8 12 2019
Statut: ppublish

Résumé

Assessing survival risk is important for discussing treatment options with estrogen receptor-positive (ER+) advanced breast cancer (ABC) patients. However, there are few reports from large-scale databases on the survival risk factors in ER+ ABC. The Safari study (UMIN000015168) was a retrospective, multicenter cohort study involving 1072 Japanese patients receiving fulvestrant 500 mg mostly as a second- or later-line endocrine therapy for ER+ ABC. The follow-up data after the Safari study were examined, focusing on any relationship between clinicopathological factors and overall survival (OS) in ER+ ABC patients. OS in patients with ER+ ABC was analyzed by univariate and multivariate analyses with a Cox proportional hazards model in this study. A total of 1031 cases were evaluable for OS analysis. Multivariate analysis showed that younger age (< 60 years), longer time from ABC diagnosis to fulvestrant use (≥ 3 years), no prior palliative chemotherapy before fulvestrant use, and progesterone receptor (PgR) negativity (PgR-) were significantly correlated with prolonged OS (median 7.0 years). For cases with histological or nuclear grade data, lower histological or nuclear grades were also correlated with longer OS. In recurrent metastatic cases, long disease-free interval (DFI) was not correlated with longer OS. In ER+ ABC patients whose treatment history included fulvestrant, younger age, longer time from ABC diagnosis to fulvestrant use, no prior palliative chemotherapy use, PgR-, and lower histological or nuclear grade correlated positively with prolonged OS.

Sections du résumé

BACKGROUND BACKGROUND
Assessing survival risk is important for discussing treatment options with estrogen receptor-positive (ER+) advanced breast cancer (ABC) patients. However, there are few reports from large-scale databases on the survival risk factors in ER+ ABC. The Safari study (UMIN000015168) was a retrospective, multicenter cohort study involving 1072 Japanese patients receiving fulvestrant 500 mg mostly as a second- or later-line endocrine therapy for ER+ ABC. The follow-up data after the Safari study were examined, focusing on any relationship between clinicopathological factors and overall survival (OS) in ER+ ABC patients.
METHODS METHODS
OS in patients with ER+ ABC was analyzed by univariate and multivariate analyses with a Cox proportional hazards model in this study.
RESULTS RESULTS
A total of 1031 cases were evaluable for OS analysis. Multivariate analysis showed that younger age (< 60 years), longer time from ABC diagnosis to fulvestrant use (≥ 3 years), no prior palliative chemotherapy before fulvestrant use, and progesterone receptor (PgR) negativity (PgR-) were significantly correlated with prolonged OS (median 7.0 years). For cases with histological or nuclear grade data, lower histological or nuclear grades were also correlated with longer OS. In recurrent metastatic cases, long disease-free interval (DFI) was not correlated with longer OS.
CONCLUSIONS CONCLUSIONS
In ER+ ABC patients whose treatment history included fulvestrant, younger age, longer time from ABC diagnosis to fulvestrant use, no prior palliative chemotherapy use, PgR-, and lower histological or nuclear grade correlated positively with prolonged OS.

Identifiants

pubmed: 31811519
doi: 10.1007/s12282-019-01029-3
pii: 10.1007/s12282-019-01029-3
pmc: PMC7196081
doi:

Substances chimiques

Antineoplastic Agents, Hormonal 0
Receptors, Estrogen 0
Receptors, Progesterone 0
Fulvestrant 22X328QOC4
ERBB2 protein, human EC 2.7.10.1
Receptor, ErbB-2 EC 2.7.10.1

Types de publication

Journal Article Multicenter Study

Langues

eng

Sous-ensembles de citation

IM

Pagination

389-398

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Auteurs

Hidetoshi Kawaguchi (H)

Department of Breast Surgery, Matsuyama Red Cross Hospital, 1 Bunkyo-cho, Matsuyama, 790-8524, Japan. hkawaguchi@matsuyama.jrc.or.jp.

Norikazu Masuda (N)

Department of Surgery, Breast Oncology, NHO Osaka National Hospital, Osaka, 540-0006, Japan.

Takahiro Nakayama (T)

Department of Breast and Endocrine Surgery, Osaka International Cancer Institute, Osaka, 541-8567, Japan.

Kenjiro Aogi (K)

Department of Breast Oncology, NHO Shikoku Cancer Center, Matsuyama, 791-0280, Japan.

Keisei Anan (K)

Department of Surgery, Kitakyushu Municipal Medical Center, Kitakyushu, 802-0077, Japan.

Yoshinori Ito (Y)

Department of Breast Medical Oncology, The Cancer Institute Hospital of JFCR, Tokyo, 135-8550, Japan.

Shoichiro Ohtani (S)

Department of Breast Surgery, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, 730-8518, Japan.

Nobuaki Sato (N)

Department of Breast Oncology, Niigata Cancer Center Hospital, Niigata, 951-8566, Japan.

Shigehira Saji (S)

Department of Medical Oncology, Fukushima Medical University, Fukushima, 960-1295, Japan.

Toshimi Takano (T)

Department of Medical Oncology, Toranomon Hospital, Tokyo, 105-8470, Japan.

Eriko Tokunaga (E)

Department of Breast Oncology, Kyushu Cancer Center, Fukuoka, 811-1395, Japan.

Seigo Nakamura (S)

Department of Surgery, Division of Breast Surgical Oncology, Showa University School of Medicine, Tokyo, 142-8666, Japan.

Yoshie Hasegawa (Y)

Department of Breast Surgery, Hirosaki Municipal Hospital, Hirosaki, 036-8004, Japan.

Masaya Hattori (M)

Department of Breast Oncology, Aichi Cancer Center Hospital, Nagoya, 464-8681, Japan.

Tomomi Fujisawa (T)

Department of Breast Oncology, Gunma Prefectural Cancer Center, Ohta, 373-8550, Japan.

Satoshi Morita (S)

Department of Biomedical Statistics and Bioinformatics, Graduate School of Medicine, Kyoto University, Kyoto, 606-8507, Japan.

Miki Yamaguchi (M)

Department of Breast Surgery, JCHO Kurume General Hospital, Kurume, 830-0013, Japan.

Hiroko Yamashita (H)

Department of Breast Surgery, Hokkaido University Hospital, Sapporo, 060-8648, Japan.

Toshinari Yamashita (T)

Department of Breast and Endocrine Surgery, Kanagawa Cancer Center, Yokohama, 241-8515, Japan.

Yutaka Yamamoto (Y)

Department of Breast and Endocrine Surgery, Kumamoto University Graduate School of Medical Sciences, Kumamoto, 860-8556, Japan.

Daisuke Yotsumoto (D)

Department of Breast Surgical Oncology, Hakuaikai Medical Corporation Sagara Hospital, Kagoshima, 892-0833, Japan.

Masakazu Toi (M)

Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, 606-8507, Japan.

Shinji Ohno (S)

Breast Oncology Center, The Cancer Institute Hospital of JFCR, Tokyo, 135-8550, Japan.

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