The most common type of breast cancer in the United States is HR+/HER2− breast cancer. Patients with HR+/HER2− breast cancer often face the threat of distant recurrence—long after the completion of their treatment. Previous studies have found that high levels of tumor infiltrating lymphocytes (TILs) were associated with improved outcomes and recurrence-free survival in patients with HR+/HER2− breast cancer. These studies, and many others, have prompted researchers to further develop and test cancer vaccines in an effort to elicit anti-tumor immune responses in these patients.

“Therefore, a rational combination therapy that enhances the immune-stimulatory properties of NAC [neoadjuvant chemotherapy], can provide long-term survival benefits for this patient population.”

Researchers from University of Arkansas for Medical Sciences, University of Texas Southwestern, Highlands Oncology Group, and Université Claude Bernard Lyon 1 conducted a new single-arm Phase Ib clinical trial. Early-stage HR+/HER2− breast cancer patients were treated with carbohydrate-mimetic peptides, the P10s-PADRE vaccine, in combination with chemotherapy treatments. Their paper was chosen as the cover of Oncotarget’s Volume 12, Issue 22, and entitled, “P10s-PADRE vaccine combined with neoadjuvant chemotherapy in ER-positive breast cancer patients induces humoral and cellular immune responses.”

“The main objective of our study was to determine an appropriate schedule to be used for adding the P10s-PADRE vaccine to cancer chemotherapy in the neoadjuvant setting considering the ability of the vaccine to elicit adequate antibody response.”

Full blog - https://www.oncotarget.org/2021/10/27/new-study-vaccine-enhances-breast-cancer-treatment/

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DOI - https://doi.org/10.18632/oncotarget.28083

Full text - https://www.oncotarget.com/article/28083/text/

Correspondence to - Behjatolah Monzavi-Karbassi - karbassi@uams.edu

Keywords - cancer vaccine, peptide mimotopes, combination therapy, breast cancer

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