Poster display session: Breast cancer - early stage, locally advanced & metastatic, CNS tumours, Developmental therapeutics, Genitourinary tumours - prostate & non-prostate, Palliative care, Psycho-oncology, Public health policy, Sarcoma, Supportive care Poster Display session

276P - Prognostic role of changes in neutrophil-to-lymphocyte ratio, tumor-infiltrating lymphocyte with programmed death ligand-1 in triple-negative breast cancer

Presentation Number
276P
Lecture Time
12:45 - 12:45
Speakers
  • Eun Kyo Joung (Seoul, KR)
Location
Hall A3 - Poster Area Networking Hub, ICM M√ľnchen, Munich, Germany
Date
22.10.2018
Time
12:45 - 13:45

Abstract

Background

Neutrophil-to-lymphocyte ratio (NLR), tumor-infiltrating lymphocyte (TIL) and programmed death-ligand 1 (PD-L1) expression is known to be associated with immunogenicity and prognosis of breast cancer. We analyzed baseline NLR and its clinical association in triple-negative breast cancer (TNBC). The changes of NLR, TIL and PD-L1 during neoadjuvant chemotherapy (NAC) and their association to recurrence was analyzed.

Methods

Between Jan 2008 to Dec 2015, 358 TNBC patients were analyzed. NLR was based on initial complete blood count (CBC). Fifty paired NLR (initial diagnosis, after completion of NAC) and 34 paired tissues (initial diagnosis, surgical specimen) were collected. The changes of TIL, CD4, CD8, forkhead box P3 (FOXP3) and PD-L1 expression were assessed with immunohistochemical stain. The relationship of prior markers and tumor recurrence was analyzed.

Results

Low NLR (NLR≤3.16) was associated to superior survival [overall survival; 41.83 vs. 36.5 months, P = 0.002; disease-free survival (DFS) 37.85 vs. 32.14 months, P = 0.032]. After NAC, patients with radical NLR changes (NLR change < -30% or > 100%) showed inferior DFS (38.37 vs. 22.37 months, P = 0.015). Same or increased TIL after NAC showed trends for superior DFS (80.0 vs. 46.0 months, P = 0.366). Positive PD-L1 (≥1%) in tumor cells at baseline was associated to superior DFS (97.45 vs. 33.02 months, P = 0.031), and positive tumor PD-L1 at post-NAC tissues showed trends for superior DFS (86.43 vs. 38.76 months, P = 0.056).

Conclusions

In TNBC patients, low NLR might be associated with superior survival. Modest changes of NLR or increased TIL after NAC may reflect good prognosis. Positive tumor PD-L1 was associated with superior DFS in our study.

Legal entity responsible for the study

Seoul St. Mary's Hospital, Incheon St. Mary's Hospital.

Funding

Has not received any funding.

Disclosure

All authors have declared no conflicts of interest.

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