Complete Response of Triple-Negative Metaplastic Carcinoma of the Breast Using Pembrolizumab

Metaplastic breast cancer (MpBC) is a rare form of breast malignancy with a poor prognosis and limited treatment guidance. Here, we report on a case of triple-negative MpBC that was successfully treated following the Keynote-522 clinical algorithm using pembrolizumab, paclitaxel, carboplatin, adriam...

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Main Authors: Amrita Ladwa, Omar Elghawy, Anneke Schroen, Kristan Abernathy, Jenna Schlefman, Patrick Dillon
Format: Article
Language:English
Published: Karger Publishers 2023-10-01
Series:Case Reports in Oncology
Subjects:
Online Access:https://beta.karger.com/Article/FullText/534146
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author Amrita Ladwa
Omar Elghawy
Anneke Schroen
Kristan Abernathy
Jenna Schlefman
Patrick Dillon
author_facet Amrita Ladwa
Omar Elghawy
Anneke Schroen
Kristan Abernathy
Jenna Schlefman
Patrick Dillon
author_sort Amrita Ladwa
collection DOAJ
description Metaplastic breast cancer (MpBC) is a rare form of breast malignancy with a poor prognosis and limited treatment guidance. Here, we report on a case of triple-negative MpBC that was successfully treated following the Keynote-522 clinical algorithm using pembrolizumab, paclitaxel, carboplatin, adriamycin, and cyclophosphamide in a neo-adjuvant fashion. The radiographic and histologic findings of the tumor are reviewed here along with the treatment regimen and response. No major toxicities associated with pembrolizumab were observed in this case. This case report serves as an example of complete pathological response of triple-negative MpBC with pembrolizumab plus chemotherapy and demonstrates the need for further research on chemoimmunotherapy for MpBC.
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spelling doaj.art-9836f39374b74ab0b834f4800f251e9e2023-11-16T07:58:20ZengKarger PublishersCase Reports in Oncology1662-65752023-10-011611129113510.1159/000534146534146Complete Response of Triple-Negative Metaplastic Carcinoma of the Breast Using PembrolizumabAmrita Ladwa0Omar Elghawy1Anneke Schroen2Kristan Abernathy3Jenna Schlefman4Patrick Dillon5Department of Medicine, University of Virginia School of Medicine, Charlottesville, VA, USADepartment of General Internal Medicine, University of Pennsylvania, Philadelphia, PA, USADepartment of Medicine, University of Virginia Cancer Center, Charlottesville, VA, USADepartment of Pathology, University of Virginia, Charlottesville, VA, USADepartment of Medicine, University of Virginia Cancer Center, Charlottesville, VA, USADepartment of Medicine, University of Virginia Cancer Center, Charlottesville, VA, USAMetaplastic breast cancer (MpBC) is a rare form of breast malignancy with a poor prognosis and limited treatment guidance. Here, we report on a case of triple-negative MpBC that was successfully treated following the Keynote-522 clinical algorithm using pembrolizumab, paclitaxel, carboplatin, adriamycin, and cyclophosphamide in a neo-adjuvant fashion. The radiographic and histologic findings of the tumor are reviewed here along with the treatment regimen and response. No major toxicities associated with pembrolizumab were observed in this case. This case report serves as an example of complete pathological response of triple-negative MpBC with pembrolizumab plus chemotherapy and demonstrates the need for further research on chemoimmunotherapy for MpBC.https://beta.karger.com/Article/FullText/534146metaplastic breast cancerimmunotherapytriple-negative metaplastic breast cancerpembrolizumabcase report
spellingShingle Amrita Ladwa
Omar Elghawy
Anneke Schroen
Kristan Abernathy
Jenna Schlefman
Patrick Dillon
Complete Response of Triple-Negative Metaplastic Carcinoma of the Breast Using Pembrolizumab
Case Reports in Oncology
metaplastic breast cancer
immunotherapy
triple-negative metaplastic breast cancer
pembrolizumab
case report
title Complete Response of Triple-Negative Metaplastic Carcinoma of the Breast Using Pembrolizumab
title_full Complete Response of Triple-Negative Metaplastic Carcinoma of the Breast Using Pembrolizumab
title_fullStr Complete Response of Triple-Negative Metaplastic Carcinoma of the Breast Using Pembrolizumab
title_full_unstemmed Complete Response of Triple-Negative Metaplastic Carcinoma of the Breast Using Pembrolizumab
title_short Complete Response of Triple-Negative Metaplastic Carcinoma of the Breast Using Pembrolizumab
title_sort complete response of triple negative metaplastic carcinoma of the breast using pembrolizumab
topic metaplastic breast cancer
immunotherapy
triple-negative metaplastic breast cancer
pembrolizumab
case report
url https://beta.karger.com/Article/FullText/534146
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