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Vaid PM, Puntambekar AK, Jumle NS, Banale RA, Ansari D, Reddy RR, Unde RR, Namewar NP, Kelkar DA, Shashidhara LS, Koppiker CB, Kulkarni MD. Evaluation of tumor-infiltrating lymphocytes (TILs) in molecular subtypes of an Indian cohort of breast cancer patients. Diagn Pathol 2022; 17:91. [PMID: 36411483 PMCID: PMC9677664 DOI: 10.1186/s13000-022-01271-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 10/21/2022] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVES Evaluation of tumor-infiltrating lymphocytes (TILs) distribution in an Indian cohort of breast cancer patients for its prognostic significance. METHODS A retrospective cohort of breast cancer patients from a single onco-surgeon's breast cancer clinic with a uniform treatment strategy was evaluated for TILs. Tumor sections were H&E stained and scored for the spatial distribution and percent stromal TILs infiltration by a certified pathologist. The scores were analysed for association with treatment response and survival outcomes across molecular subtypes. RESULTS Total 229 breast cancer tumors were evaluated. Within spatial distribution categories, intra-tumoral TILs were observed to be associated with complete pathological response and lower recurrence frequency for the entire cohort. Subtype-wise analysis of stromal TILs (sTILs) re-enforced significantly higher infiltration in TNBC compared to HER2-positive and ER-positive tumors. A favourable association of higher stromal infiltration was observed with treatment response and disease outcomes, specifically in TNBC. CONCLUSION Intra-tumoral TILs showed a higher proportion with favourable association with better patient outcomes in an Indian cohort, unlike western cohorts where both stromal and intra-tumoral TILs show similar association with prognosis. With further validation, TILs can be developed as a cost-effective surrogate marker for treatment response, especially in a low-resource setting such as India.
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Affiliation(s)
- Pooja M. Vaid
- grid.417959.70000 0004 1764 2413Centre for Translational Cancer Research: a joint initiative of Indian Institute of Science Education and Research (IISER) Pune and Prashanti Cancer Care Mission (PCCM), Pune, India ,grid.449178.70000 0004 5894 7096Department of Biological Sciences, Ashoka University, Sonipat, India
| | | | - Nutan S. Jumle
- grid.414967.90000 0004 1804 743XDepartment of Pathology, Jehangir Hospital, Pune, India
| | - Rituja A. Banale
- grid.417959.70000 0004 1764 2413Centre for Translational Cancer Research: a joint initiative of Indian Institute of Science Education and Research (IISER) Pune and Prashanti Cancer Care Mission (PCCM), Pune, India ,grid.506045.20000 0004 4911 4105Prashanti Cancer Care Mission, Pune, Maharashtra India
| | - Danish Ansari
- grid.417959.70000 0004 1764 2413Centre for Translational Cancer Research: a joint initiative of Indian Institute of Science Education and Research (IISER) Pune and Prashanti Cancer Care Mission (PCCM), Pune, India ,grid.506045.20000 0004 4911 4105Prashanti Cancer Care Mission, Pune, Maharashtra India
| | - Ruhi R. Reddy
- grid.417959.70000 0004 1764 2413Centre for Translational Cancer Research: a joint initiative of Indian Institute of Science Education and Research (IISER) Pune and Prashanti Cancer Care Mission (PCCM), Pune, India ,grid.506045.20000 0004 4911 4105Prashanti Cancer Care Mission, Pune, Maharashtra India
| | - Rohini R. Unde
- grid.417959.70000 0004 1764 2413Centre for Translational Cancer Research: a joint initiative of Indian Institute of Science Education and Research (IISER) Pune and Prashanti Cancer Care Mission (PCCM), Pune, India ,grid.506045.20000 0004 4911 4105Prashanti Cancer Care Mission, Pune, Maharashtra India
| | - Namrata P. Namewar
- grid.417959.70000 0004 1764 2413Centre for Translational Cancer Research: a joint initiative of Indian Institute of Science Education and Research (IISER) Pune and Prashanti Cancer Care Mission (PCCM), Pune, India ,grid.506045.20000 0004 4911 4105Prashanti Cancer Care Mission, Pune, Maharashtra India
| | - Devaki A. Kelkar
- grid.417959.70000 0004 1764 2413Centre for Translational Cancer Research: a joint initiative of Indian Institute of Science Education and Research (IISER) Pune and Prashanti Cancer Care Mission (PCCM), Pune, India ,grid.506045.20000 0004 4911 4105Prashanti Cancer Care Mission, Pune, Maharashtra India
| | - L. S. Shashidhara
- grid.417959.70000 0004 1764 2413Centre for Translational Cancer Research: a joint initiative of Indian Institute of Science Education and Research (IISER) Pune and Prashanti Cancer Care Mission (PCCM), Pune, India ,grid.449178.70000 0004 5894 7096Department of Biological Sciences, Ashoka University, Sonipat, India ,grid.417959.70000 0004 1764 2413Indian Institute of Science Education and Research, Pune, India
| | - Chaitanyanand B. Koppiker
- grid.417959.70000 0004 1764 2413Centre for Translational Cancer Research: a joint initiative of Indian Institute of Science Education and Research (IISER) Pune and Prashanti Cancer Care Mission (PCCM), Pune, India ,grid.506045.20000 0004 4911 4105Prashanti Cancer Care Mission, Pune, Maharashtra India
| | - Madhura D. Kulkarni
- grid.417959.70000 0004 1764 2413Centre for Translational Cancer Research: a joint initiative of Indian Institute of Science Education and Research (IISER) Pune and Prashanti Cancer Care Mission (PCCM), Pune, India ,grid.506045.20000 0004 4911 4105Prashanti Cancer Care Mission, Pune, Maharashtra India
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