OncoTargets and Therapy (Jan 2020)

Predictive Value of Lymphocyte-Related Blood Parameters at the Time Point of Lymphocyte Nadir During Radiotherapy in Breast Cancer

  • Liu J,
  • Ma F,
  • Sun B,
  • Cong Y,
  • Xuan L,
  • Wang Q,
  • Wu S

Journal volume & issue
Vol. Volume 13
pp. 151 – 161

Abstract

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Jiannan Liu,1,2 Feiyan Ma,3 Bing Sun,2 Yang Cong,2 Liang Xuan,2 Qian Wang,2 Shikai Wu2 1Academy of Military Medical Sciences, Beijing 100039, People’s Republic of China; 2Department of Radiation Oncology, The Fifth Medical Center of Chinese PLA General Hospital (Former 307th Hospital of the PLA), Beijing 100071, People’s Republic of China; 3Baoding No.1 Central Hospital Affiliated with Chengde Medical College, Baoding City, Hebei Province 071000, People’s Republic of ChinaCorrespondence: Shikai WuDepartment of Radiation Oncology, The Fifth Medical Center of Chinese PLA General Hospital (Former 307th Hospital of the PLA), No. 8 East Road, Fengtai District, Beijing 100071, People’s Republic of ChinaTel/Fax +86 10 66947621Email [email protected]: Various reports found a relationship between lymphocyte-related blood parameters (LRBP), including absolute lymphocyte counts (ALC), neutrophil-to-lymphocyte ratio (NLR), and platelet-to-lymphocyte ratio (PLR) and prognosis of breast cancer. Most of the studies focused on LRBP pre-treatment. Seldom have studies focused on LRBP during radiotherapy. We intended to perform a retrospective cohort study on the prognostic value of LRBP at the time point of lowest ALC during radiotherapy for breast cancer.Patients and methods: A total of 158 female patients were included in radiotherapy group because of the strict limitation standards of complete routine blood test results at pre-treatment and pre-operation, and at least once a week during radiotherapy. Besides 221 patients, including the 158 patients of radiotherapy group, were adopted in pre-treatment group and pre-operation group.Results: ALC and PLR at the time point of lowest ALC during radiotherapy are prognostic predictors of breast cancer, and lower ALC and higher PLR are independent significant predictors of poor DFS. Besides, lower ALC, higher NLR and higher PLR at both pre-treatment and pre-operation were found to be independent variables for predicting poor DFS.Conclusion: LRBP at pre-treatment, pre-operation, and during radiotherapy may serve as predictors of outcomes of breast cancer.Keywords: breast cancer, radiotherapy, disease-free survival, lymphocyte-related blood parameters, lowest absolute lymphocyte counts

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