The impact of p53 protein expression on the achievement of complete pathomorphism in neoadjuvant drug therapy for early HER2-positive breast cancer (results of a retrospective single-center study)
- Authors: Kuts I.N.1, Titov K.S.1,2, Karseladze D.A.1, Zakurdaev E.I.1, Lebedev S.S.1,3, Lebedinsky I.N.1,3, Chizhikov N.P.1,3, Tatarova A.V.1,3, Roshchin F.Y.1,3
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Affiliations:
- S.P. Botkin Moscow Multidisciplinary Research and Clinical Center of the Moscow Healthcare Department
- Peoples’ Friendship University of Russia named after Patrice Lumumba
- Russian Medical Academy of Continuous Professional Education
- Issue: Vol 32, No 9 (2025)
- Pages: 144-150
- Section: Oncology
- URL: https://journal-vniispk.ru/2073-4034/article/view/368205
- DOI: https://doi.org/10.18565/pharmateca.2025.9.144-150
- ID: 368205
Cite item
Abstract
Background: Neoadjuvant therapy (NAT) is currently the gold standard for the treatment of early HER2-positive breast cancer (BC). However, only patients who achieve a complete pathological response (pCR) benefit from overall survival and progression-free survival (OS and PFS). The question of which patients should begin treatment with neoadjuvant therapy (NAT) and which should be treated initially with surgery remains a matter of debate.
Objective: Determination of the role of tumor p53 expression in achieving pCR after NAT in patients with early HER2-positive breast cancer by review prepared histological biopsy specimens for p53 expression determination, followed by a logistic regression analysis of the resulting database to calculate the relationship between achieving complete pathological response and the presence of p53 expression.
Materials and methods: A retrospective analysis of the medical records of 50 patients who received combination or comprehensive treatment for early (cT1-3N0-2M0) HER2-positive breast cancer in the General Oncology Department, S.P. Botkin Moscow Multidisciplinary Research and Clinical Center of the Moscow Healthcare Department, over a 4-year period from 2021 to 2024. All patients were assessed for p53 protein expression in preoperative biopsy specimens using immunohistochemistry assay. The presence or absence of p53 protein expression was analyzed and correlated with the achievement of pCR.
Results: The presence of p53 protein expression significantly increases the likelihood of achieving a complete pathological response (pCR=1). OR=9.33 indicates that patients with p53 expression have a 9-fold higher chance of pCR than patients without it. The result is statistically significant (p=0.0024), confirming the role of p53 protein expression as a strong predictor of response to NAT.
Conclusion: p53 protein expression is a significant predictor of achieving a complete pathological response (RCB = 0) after effective NAT.
About the authors
Ivan N. Kuts
S.P. Botkin Moscow Multidisciplinary Research and Clinical Center of the Moscow Healthcare Department
Email: vanya-kuts97@yandex.ru
ORCID iD: 0000-0003-1516-6110
Oncologist, Oncosurgical Department No. 71 (General Oncology)
Russian Federation, MoscowKonstantin S. Titov
S.P. Botkin Moscow Multidisciplinary Research and Clinical Center of the Moscow Healthcare Department; Peoples’ Friendship University of Russia named after Patrice Lumumba
Email: vanya-kuts97@yandex.ru
ORCID iD: 0000-0003-4460-9136
SPIN-code: 7795-6512
Dr. Sci. (Med.), Professor, Leading Researcher, Professor, Department of Oncology and Roentgenology named after V.P. Kharchenko
Russian Federation, Moscow; MoscowDmitry A. Karseladze
S.P. Botkin Moscow Multidisciplinary Research and Clinical Center of the Moscow Healthcare Department
Email: vanya-kuts97@yandex.ru
ORCID iD: 0000-0002-9877-1078
Cand. Sci. (Med.), Research Fellow, Surgeon, Oncosurgical Department No. 71 (General Oncology)
Russian Federation, MoscowEvgeny I. Zakurdaev
S.P. Botkin Moscow Multidisciplinary Research and Clinical Center of the Moscow Healthcare Department
Email: vanya-kuts97@yandex.ru
ORCID iD: 0000-0001-8613-9609
Cand. Sci. (Med.), Pathologist, Pathology Department
Russian Federation, MoscowSergey S. Lebedev
S.P. Botkin Moscow Multidisciplinary Research and Clinical Center of the Moscow Healthcare Department; Russian Medical Academy of Continuous Professional Education
Email: vanya-kuts97@yandex.ru
ORCID iD: 0000-0001-5366-1281
Dr. Sci. (Med.), Associate Professor, Deputy Chief Physician for Oncology, Leading Researcher
Russian Federation, Moscow; MoscowIvan N. Lebedinsky
S.P. Botkin Moscow Multidisciplinary Research and Clinical Center of the Moscow Healthcare Department; Russian Medical Academy of Continuous Professional Education
Email: vanya-kuts97@yandex.ru
ORCID iD: 0000-0001-7735-1106
Cand Sci. (Med.), Senior Researcher, Head of Oncosurgical Department No. 71 (General Oncology)
Russian Federation, Moscow; MoscowNikita P. Chizhikov
S.P. Botkin Moscow Multidisciplinary Research and Clinical Center of the Moscow Healthcare Department; Russian Medical Academy of Continuous Professional Education
Email: vanya-kuts97@yandex.ru
ORCID iD: 0009-0004-0584-8657
Pathologist, Head of the Pathology Department
Russian Federation, Moscow; MoscowAngelina V. Tatarova
S.P. Botkin Moscow Multidisciplinary Research and Clinical Center of the Moscow Healthcare Department; Russian Medical Academy of Continuous Professional Education
Email: vanya-kuts97@yandex.ru
ORCID iD: 0009-0005-3865-0046
Surgeon, Oncosurgical Department No. 71 (General Oncology)
Russian Federation, Moscow; MoscowFedor Yu. Roshchin
Author for correspondence.
Email: vanya-kuts97@yandex.ru
ORCID iD: 0009-0004-0477-7690
Independent Specialist, Statistical Consultant
Russian Federation, MoscowReferences
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