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Takada, Shinya; Maeda, Hideki; Umehara, Kengo; Kuwahara, Sayuri; Yamamoto, Mitsugu; Tomioka, Nobumoto; Watanabe, Kenichi; Mino, Kozo
Biological & pharmaceutical bulletin, 08/2023, Letnik: 46, Številka: 8Journal Article
Therapy for patients of metastatic breast cancer based on palbociclib, a cyclin-dependent kinase 4/6 inhibitor, has been approved in Japan. However, the risk factors for palbociclib-induced severe neutropenia in Japanese patients are rarely reported. Hence, the present study is aimed to identify the risk factors for adverse events requiring palbociclib dose reduction or discontinuation, and to identify the factors necessary to identify a more stable strategy for treatment continuation. This retrospective cohort analysis included patients with advanced breast cancer treated with 125 mg/d palbociclib. We demonstrated that severe neutropenia required significant dose reduction or therapy cessation. Most (77%) of the patients had severe neutropenia within the three courses. Risk factors for grade 3 or higher included low neutrophil counts (< 3250 /µL) before treatment odds ratio (OR) = 9.10, 95% confidence interval (CI) (2.80–29.41), p < 0.001 and high age-adjusted Charlson comorbidity index (> 9) OR = 1.64, 95% CI (1.09–2.48), p = 0.018. Thus, low baseline neutrophil counts and high values for Age-adjusted Charlson comorbidity index are prospective predictive markers for palbociclib-induced severe neutropenia.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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