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Article

Baseline lymphopenia as prognostic factor in patients with metastatic breast cancer treated with palbociclib

  • Authors:
    • George Emile
    • Sarah Penager
    • Christelle Levy
    • Alison Johnson
    • Djelila Allouache
    • Justine Lequesne
    • Ioana Hrab
    • Carine Segura
    • Adeline Morel
    • Katarina Gunzer
    • Audrey Faveyrial
    • Francois Cherifi
    • Angelique Da Silva
  • View Affiliations / Copyright

    Affiliations: Breast Cancer Unit, François Baclesse Comprehensive Cancer Center, Caen, Calvados, Normandy 14000, France, Clinical Research Department, François Baclesse Comprehensive Cancer Center, Caen, Calvados, Normandy 14000, France
  • Article Number: 25
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    Published online on: November 19, 2021
       https://doi.org/10.3892/ol.2021.13143
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Abstract

Cyclin‑dependent‑kinase 4‑6 inhibitors (CDK4/6i) have improved the management of hormone receptor (HR)+/human epidermal growth factor receptor (HER)2‑ metastatic breast cancer (mBC). Currently, there are no valid prognostic factors for response to CDK4/6i. Baseline lymphopenia is reported as a prognostic factor in several types of cancer. The present retrospective study aimed to evaluate the effect of baseline absolute lymphocyte count (ALC) on response to palbociclib. Progression‑free survival (PFS) was the primary endpoint. Secondary endpoints were overall survival (OS), best response and safety. A total of 114 patients treated for mBC between 2016 and 2019 were included. Median baseline ALC was 1.4 g/l (range, 0.2‑4.3 g/l). A total of 65 (57%) and 49 (43%) patients had baseline ALC values of <1.5 and ≥1.5 g/l, respectively. Patients with baseline lymphopenia exhibited significantly shorter PFS (6 vs. 10 months; P=0.004) and OS (20 vs. 33 months; P=0.02). ALC <1.5 g/l independently predicted worse survival, as indicated by multivariate analysis (P=0.04; hazard ratio, 1.76; 95% confidence interval, 1.02‑3.02). Patients with baseline ALC <1.5 g/l had significantly less partial response (14 vs. 22%; P=0.016) and more disease progression (46 vs. 20%; P=0.016) than those with ALC ≥1.5 g/l. ALC is a strong and easy‑to‑use dosage with prognostic factor for patients with HR+/HER2‑ mBC treated with palbociclib and endocrine therapy. Lymphopenia may also be a predictive factor of early progression. These data need to be verified in a larger prospective study.
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Copy and paste a formatted citation
Spandidos Publications style
Emile G, Penager S, Levy C, Johnson A, Allouache D, Lequesne J, Hrab I, Segura C, Morel A, Gunzer K, Gunzer K, et al: Baseline lymphopenia as prognostic factor in patients with metastatic breast cancer treated with palbociclib. Oncol Lett 23: 25, 2022.
APA
Emile, G., Penager, S., Levy, C., Johnson, A., Allouache, D., Lequesne, J. ... Da Silva, A. (2022). Baseline lymphopenia as prognostic factor in patients with metastatic breast cancer treated with palbociclib. Oncology Letters, 23, 25. https://doi.org/10.3892/ol.2021.13143
MLA
Emile, G., Penager, S., Levy, C., Johnson, A., Allouache, D., Lequesne, J., Hrab, I., Segura, C., Morel, A., Gunzer, K., Faveyrial, A., Cherifi, F., Da Silva, A."Baseline lymphopenia as prognostic factor in patients with metastatic breast cancer treated with palbociclib". Oncology Letters 23.1 (2022): 25.
Chicago
Emile, G., Penager, S., Levy, C., Johnson, A., Allouache, D., Lequesne, J., Hrab, I., Segura, C., Morel, A., Gunzer, K., Faveyrial, A., Cherifi, F., Da Silva, A."Baseline lymphopenia as prognostic factor in patients with metastatic breast cancer treated with palbociclib". Oncology Letters 23, no. 1 (2022): 25. https://doi.org/10.3892/ol.2021.13143
Copy and paste a formatted citation
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Spandidos Publications style
Emile G, Penager S, Levy C, Johnson A, Allouache D, Lequesne J, Hrab I, Segura C, Morel A, Gunzer K, Gunzer K, et al: Baseline lymphopenia as prognostic factor in patients with metastatic breast cancer treated with palbociclib. Oncol Lett 23: 25, 2022.
APA
Emile, G., Penager, S., Levy, C., Johnson, A., Allouache, D., Lequesne, J. ... Da Silva, A. (2022). Baseline lymphopenia as prognostic factor in patients with metastatic breast cancer treated with palbociclib. Oncology Letters, 23, 25. https://doi.org/10.3892/ol.2021.13143
MLA
Emile, G., Penager, S., Levy, C., Johnson, A., Allouache, D., Lequesne, J., Hrab, I., Segura, C., Morel, A., Gunzer, K., Faveyrial, A., Cherifi, F., Da Silva, A."Baseline lymphopenia as prognostic factor in patients with metastatic breast cancer treated with palbociclib". Oncology Letters 23.1 (2022): 25.
Chicago
Emile, G., Penager, S., Levy, C., Johnson, A., Allouache, D., Lequesne, J., Hrab, I., Segura, C., Morel, A., Gunzer, K., Faveyrial, A., Cherifi, F., Da Silva, A."Baseline lymphopenia as prognostic factor in patients with metastatic breast cancer treated with palbociclib". Oncology Letters 23, no. 1 (2022): 25. https://doi.org/10.3892/ol.2021.13143
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