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Published in: BMC Cancer 1/2021

Open Access 01-12-2021 | Prostate Cancer | Research article

Impact of pretreatment anemia on upfront abiraterone acetate therapy for metastatic hormone-sensitive prostate cancer: a multicenter retrospective study

Authors: Teppei Okamoto, Daisuke Noro, Shingo Hatakeyama, Shintaro Narita, Koji Mitsuzuka, Toshihiko Sakurai, Sadafumi Kawamura, Senji Hoshi, Jiro Shimoda, Toshikazu Tanaka, Toshiaki Kawaguchi, Shigeto Ishidoya, Akihiro Ito, Norihiko Tsuchiya, Tomonori Habuchi, Chikara Ohyama

Published in: BMC Cancer | Issue 1/2021

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Abstract

Background

Anemia has been a known prognostic factor in metastatic hormone-sensitive prostate cancer (mHSPC). We therefore examined the effect of anemia on the efficacy of upfront abiraterone acetate (ABI) in patients with mHSPC.

Methods

We retrospectively evaluated 66 mHSPC patients with high tumor burden who received upfront ABI between 2018 and 2020 (upfront ABI group). We divided these patients into two groups: the anemia-ABI group (hemoglobin < 13.0 g/dL, n = 20) and the non-anemia-ABI group (n = 46). The primary objective was to examine the impact of anemia on the progression-free survival (PFS; clinical progression or PC death before development of castration resistant PC) of patients in the upfront ABI group. Secondary objectives included an evaluation of the prognostic significance of upfront ABI and a comparison with a historical cohort (131 mHSPC patients with high tumor burden who received androgen deprivation therapy (ADT/complete androgen blockade [CAB] group) between 2014 and 2019).

Results

We found that the anemia-ABI group had a significantly shorter PFS than the non-anemia-ABI group. A multivariate Cox regression analysis showed that anemia was an independent prognostic factor of PFS in the upfront ABI group (hazard ratio, 4.66; P = 0.014). Patients in the non-anemia-ABI group were determined to have a significantly longer PFS than those in the non-anemia-ADT/CAB group (n = 68) (P < 0.001). However, no significant difference was observed in the PFS between patients in the anemia-ABI and the anemia-ADT/CAB groups (n = 63). Multivariate analyses showed that upfront ABI could significantly prolong the PFS of patients without anemia (hazard ratio, 0.17; P < 0.001), whereas ABI did not prolong the PFS of patients with anemia.

Conclusion

Pretreatment anemia was a prognostic factor among mHSPC patients who received upfront ABI. Although the upfront ABI significantly improved the PFS of mHSPC patients without anemia, its efficacy in patients with anemia might be limited.
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Literature
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Metadata
Title
Impact of pretreatment anemia on upfront abiraterone acetate therapy for metastatic hormone-sensitive prostate cancer: a multicenter retrospective study
Authors
Teppei Okamoto
Daisuke Noro
Shingo Hatakeyama
Shintaro Narita
Koji Mitsuzuka
Toshihiko Sakurai
Sadafumi Kawamura
Senji Hoshi
Jiro Shimoda
Toshikazu Tanaka
Toshiaki Kawaguchi
Shigeto Ishidoya
Akihiro Ito
Norihiko Tsuchiya
Tomonori Habuchi
Chikara Ohyama
Publication date
01-12-2021
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2021
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/s12885-021-08206-8

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