Original Research Article
Year: 2021 | Month: November | Volume: 8 | Issue: 11 | Pages: 1-9
DOI: https://doi.org/10.52403/ijrr.20211101
Correlation between Serum Interleukin-6 Levels and Clinical Response to Anthracycline-Based Neoadjuvant Chemotherapy Regimen in Locally Advanced Breast Cancer Patients
Fahriansyah Mega Pratama1, Husnul Ghaib2, Iskandar Ali2
1Department of Surgery, 2Division of Oncology, Department of Surgery,
Faculty of Medicine, Universitas Airlangga/ Dr. Soetomo General Hospital, Surabaya, Indonesia
Corresponding Author: Fahriansyah Mega Pratama
ABSTRACT
Background: Neoadjuvant chemotherapy is the initial therapy and the main pillar of treatment for locally advanced breast cancer (LABC). Currently, there is marker that widely accepted as a predictive factor for chemotherapy response in LABC. Elevated serum interleukin-6 (IL-6) levels and tumor sites have been proposed as prognostic markers for breast cancer. In this study, we aimed to examine the association between serum IL-6 levels with clinical response after the administration of neoadjuvant chemotherapy.
Methods: This study is an observational analytic study with a cohort prospective character to determine the relationship between IL-6 serum levels and clinical response to anthracycline-based neoadjuvant chemotherapy in locally advanced breast cancer (LABC) patients at Dr. Soetomo General Hospital during April 2021 to September 2021 with a total sample of 38 patients.
Results: Fourteen patients (77.8%) had a positive response in the low IL-6 level group and 4 patients (22.2%) had a negative response. In high IL-6 level group, 4 patients (40%) had a positive response and 16 patients (80%) had a negative response. The cut off of 15.495 pg/mL was used as cut off value for IL-6 to predict the clinical response to chemotherapy. The sensitivity, specificity, PPV, NPV, and accuracy of IL-6 to predict the clinical response after chemotherapy were 80.0%, 77.8%, 80.0%, 77.8%, and 78.9%, respectively.
Conclusion: There is a relationship between serum IL-6 levels and clinical response to anthracycline-based neoadjuvant chemotherapy regimens in locally advanced breast cancer (LABC) patients.
Keywords: interleukin-6, clinical response, locally advanced breast cancer.
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