Open AccessPeripheral blood eosinophil count is associated with response to chemoimmunotherapy in metastatic triple-negative breast cancer
Author(s) -
Hazem Ghebeh,
Mahmoud A. Elshenawy,
Adher Alsayed,
Taher AlTweigeri
Publication year - 2022
Publication title -
immunotherapy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.127
H-Index - 48
eISSN - 1750-7448
pISSN - 1750-743X
DOI - 10.2217/imt-2021-0149
Subject(s) - medicine , oncology , chemoimmunotherapy , breast cancer , triple negative breast cancer , immunotherapy , metastatic breast cancer , cancer
Introduction: There is evidence for an association between peripheral blood eosinophil count (PBEC) and response to cancer immunotherapy; however, such data is limited in metastatic triple-negative breast cancer (mTNBC). Patients & methods: This report presents patients (n = 14) who received a combination of durvalumab and paclitaxel for mTNBC (NCT02628132). Results: There was a statistically significant correlation (p = 0.028) between an increase in PBEC (>300/mm 3 ) during treatment and response to the combination therapy. Survival analysis showed a statistically significant association between progression-free survival and increased PBEC, after therapy (p = 0.005). A similar trend existed for overall survival, although it did not reach statistical significance (p = 0.167). Conclusion: This is the first study to report on eosinophilia in mTNBC treated with chemoimmunotherapy and supports a role for eosinophils in immunotherapy for mTNBC.