Paclitaxel-related type I Kounis Syndrome in a very young patient with HER2-positive breast cancer and the role of genomics to disentangle a complex therapeutic scenario: a case report and narrative review

We present the first documented oncologic case of a type I Kounis syndrome (KS) following paclitaxel administration, in a very young patient with HER2-positive(+) early-stage breast cancer (BC). KS is a relatively rare acute coronary syndrome triggered by anaphylactic or hypersensitivity reactions,...

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Main Authors: Javier Muñoz, Sabrina Nucera, Nuria Rubira Garcia, Isaac Cebrecos, Gabriela Oses, Sergi Ganau, Esther Sanfeliu, Pedro Jares, Mercedes Marín-Aguilera, Patricia Galván, Fara Brasó-Maristany, Olga Martínez-Sáez, Enric Cascos, Carme Font, Francesco Schettini
Format: Article
Language:English
Published: Elsevier 2025-06-01
Series:Breast
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Online Access:http://www.sciencedirect.com/science/article/pii/S0960977625004825
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author Javier Muñoz
Sabrina Nucera
Nuria Rubira Garcia
Isaac Cebrecos
Gabriela Oses
Sergi Ganau
Esther Sanfeliu
Pedro Jares
Mercedes Marín-Aguilera
Patricia Galván
Fara Brasó-Maristany
Olga Martínez-Sáez
Enric Cascos
Carme Font
Francesco Schettini
author_facet Javier Muñoz
Sabrina Nucera
Nuria Rubira Garcia
Isaac Cebrecos
Gabriela Oses
Sergi Ganau
Esther Sanfeliu
Pedro Jares
Mercedes Marín-Aguilera
Patricia Galván
Fara Brasó-Maristany
Olga Martínez-Sáez
Enric Cascos
Carme Font
Francesco Schettini
author_sort Javier Muñoz
collection DOAJ
description We present the first documented oncologic case of a type I Kounis syndrome (KS) following paclitaxel administration, in a very young patient with HER2-positive(+) early-stage breast cancer (BC). KS is a relatively rare acute coronary syndrome triggered by anaphylactic or hypersensitivity reactions, of which there is limited awareness among healthcare providers. It is subdivided in four subtypes depending on cardiac artery medical history. While no established management guidelines exist, its treatment requires addressing severe infusion reactions while ensuring proper myocardial perfusion. We hereby illustrate its successful acute management and report on how tumor genomics through the novel HER2DX assay helped re-defining the entire neo/adjuvant oncologic strategy. HER2DX integrates tumor size and nodal involvement with 27 genes’ expression data tracking four biological BC-related and immunologic signatures so to estimate a prognostic and a predictive score. This report demonstrates how clinical and genomic data can be effectively integrated to optimize therapeutic decisions in HER2+ BC, offering a model for personalized care also in atypical and complex cases.
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spelling doaj-art-62f067031f944c19a9f385cc5b8080d22025-08-20T02:30:55ZengElsevierBreast1532-30802025-06-018110446510.1016/j.breast.2025.104465Paclitaxel-related type I Kounis Syndrome in a very young patient with HER2-positive breast cancer and the role of genomics to disentangle a complex therapeutic scenario: a case report and narrative reviewJavier Muñoz0Sabrina Nucera1Nuria Rubira Garcia2Isaac Cebrecos3Gabriela Oses4Sergi Ganau5Esther Sanfeliu6Pedro Jares7Mercedes Marín-Aguilera8Patricia Galván9Fara Brasó-Maristany10Olga Martínez-Sáez11Enric Cascos12Carme Font13Francesco Schettini14Medical Oncology Department, Hospital Clinic of Barcelona, C. Villaroel 170, 08036, Barcelona, SpainTranslational Genomics and Targeted Therapies in Solid Tumors Group, August Pi i Sunyer Biomedical Research Institute (IDIBAPS), C. Villaroel 170, 08036, Barcelona, Spain; Department of Human Pathology ''G. Barresi'', University of Messina, 98131, Messina, ItalyAllergy Service, Hospital Clinic of Barcelona, Barcelona, SpainClinic Institute of Gynecology, Obstetrics and Neonatology, Hospital Clinic of Barcelona, Barcelona, Spain; Faculty of Medicine, University of Barcelona, Barcelona, SpainFaculty of Medicine, University of Barcelona, Barcelona, Spain; Radiation Oncology Department, Hospital Clínic de Barcelona, Barcelona, SpainDepartment of Radiology, Diagnosis Imaging Center, Hospital Clinic of Barcelona, Barcelona, SpainTranslational Genomics and Targeted Therapies in Solid Tumors Group, August Pi i Sunyer Biomedical Research Institute (IDIBAPS), C. Villaroel 170, 08036, Barcelona, Spain; Faculty of Medicine, University of Barcelona, Barcelona, Spain; Department of Pathology, Biomedical Diagnostic Center, Hospital Clinic of Barcelona, Barcelona, SpainDepartment of Pathology, Biomedical Diagnostic Center, Hospital Clinic of Barcelona, Barcelona, SpainReveal Genomic, Barcelona, SpainTranslational Genomics and Targeted Therapies in Solid Tumors Group, August Pi i Sunyer Biomedical Research Institute (IDIBAPS), C. Villaroel 170, 08036, Barcelona, SpainTranslational Genomics and Targeted Therapies in Solid Tumors Group, August Pi i Sunyer Biomedical Research Institute (IDIBAPS), C. Villaroel 170, 08036, Barcelona, Spain; Reveal Genomic, Barcelona, SpainMedical Oncology Department, Hospital Clinic of Barcelona, C. Villaroel 170, 08036, Barcelona, Spain; Translational Genomics and Targeted Therapies in Solid Tumors Group, August Pi i Sunyer Biomedical Research Institute (IDIBAPS), C. Villaroel 170, 08036, Barcelona, Spain; Faculty of Medicine, University of Barcelona, Barcelona, SpainDepartment of Cardiology, Hospital Clínic of Barcelona, Barcelona, SpainMedical Oncology Department, Hospital Clinic of Barcelona, C. Villaroel 170, 08036, Barcelona, Spain; Translational Genomics and Targeted Therapies in Solid Tumors Group, August Pi i Sunyer Biomedical Research Institute (IDIBAPS), C. Villaroel 170, 08036, Barcelona, Spain; Faculty of Medicine, University of Barcelona, Barcelona, SpainMedical Oncology Department, Hospital Clinic of Barcelona, C. Villaroel 170, 08036, Barcelona, Spain; Translational Genomics and Targeted Therapies in Solid Tumors Group, August Pi i Sunyer Biomedical Research Institute (IDIBAPS), C. Villaroel 170, 08036, Barcelona, Spain; Faculty of Medicine, University of Barcelona, Barcelona, Spain; Corresponding author. Translational Genomics and Targeted Therapies in Solid Tumors Group, August Pi i Sunyer Biomedical Research Institute (IDIBAPS), C. Villaroel 170, 08036, Barcelona, Spain.We present the first documented oncologic case of a type I Kounis syndrome (KS) following paclitaxel administration, in a very young patient with HER2-positive(+) early-stage breast cancer (BC). KS is a relatively rare acute coronary syndrome triggered by anaphylactic or hypersensitivity reactions, of which there is limited awareness among healthcare providers. It is subdivided in four subtypes depending on cardiac artery medical history. While no established management guidelines exist, its treatment requires addressing severe infusion reactions while ensuring proper myocardial perfusion. We hereby illustrate its successful acute management and report on how tumor genomics through the novel HER2DX assay helped re-defining the entire neo/adjuvant oncologic strategy. HER2DX integrates tumor size and nodal involvement with 27 genes’ expression data tracking four biological BC-related and immunologic signatures so to estimate a prognostic and a predictive score. This report demonstrates how clinical and genomic data can be effectively integrated to optimize therapeutic decisions in HER2+ BC, offering a model for personalized care also in atypical and complex cases.http://www.sciencedirect.com/science/article/pii/S0960977625004825Kounis syndromeHER2-PositiveBreast cancerHER2DXGenomics
spellingShingle Javier Muñoz
Sabrina Nucera
Nuria Rubira Garcia
Isaac Cebrecos
Gabriela Oses
Sergi Ganau
Esther Sanfeliu
Pedro Jares
Mercedes Marín-Aguilera
Patricia Galván
Fara Brasó-Maristany
Olga Martínez-Sáez
Enric Cascos
Carme Font
Francesco Schettini
Paclitaxel-related type I Kounis Syndrome in a very young patient with HER2-positive breast cancer and the role of genomics to disentangle a complex therapeutic scenario: a case report and narrative review
Breast
Kounis syndrome
HER2-Positive
Breast cancer
HER2DX
Genomics
title Paclitaxel-related type I Kounis Syndrome in a very young patient with HER2-positive breast cancer and the role of genomics to disentangle a complex therapeutic scenario: a case report and narrative review
title_full Paclitaxel-related type I Kounis Syndrome in a very young patient with HER2-positive breast cancer and the role of genomics to disentangle a complex therapeutic scenario: a case report and narrative review
title_fullStr Paclitaxel-related type I Kounis Syndrome in a very young patient with HER2-positive breast cancer and the role of genomics to disentangle a complex therapeutic scenario: a case report and narrative review
title_full_unstemmed Paclitaxel-related type I Kounis Syndrome in a very young patient with HER2-positive breast cancer and the role of genomics to disentangle a complex therapeutic scenario: a case report and narrative review
title_short Paclitaxel-related type I Kounis Syndrome in a very young patient with HER2-positive breast cancer and the role of genomics to disentangle a complex therapeutic scenario: a case report and narrative review
title_sort paclitaxel related type i kounis syndrome in a very young patient with her2 positive breast cancer and the role of genomics to disentangle a complex therapeutic scenario a case report and narrative review
topic Kounis syndrome
HER2-Positive
Breast cancer
HER2DX
Genomics
url http://www.sciencedirect.com/science/article/pii/S0960977625004825
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