s-1-(combination) and Triple-Negative-Breast-Neoplasms

Canerpaturev (C-REV) is a highly attenuated, replication-competent, mutant strain of oncolytic herpes simplex virus type 1 that may be an effective new cancer treatment option. S-1, an oral formulation containing the 5-fluorouracil (5-FU) prodrug tegafur and the two enzyme modulators gimeracil and oteracil, is used as a key chemotherapeutic agent for metastatic recurrent breast cancer. Although the antitumor effects of oncolytic viruses combined with 5-FU in vivo have been reported, the detailed mechanisms are unknown. Here, we investigated the antitumor mechanism of the combination of C-REV and S-1 in triple-negative breast cancer (TNBC) in the context of tumor immunity. The combined effect of C-REV and S-1 was evaluated in a bilateral tumor model of murine TNBC 4T1 in vivo. S-1 enhanced the TNBC growth inhibitory effects of C-REV, and decreased the number of tumor-infiltrating, myeloid-derived suppressor cells (MDSCs), which suppress both innate and adaptive immune responses. Moreover, C-REV alone and in combination with S-1 significantly increased the number of CD8

Topics: Animals; Antimetabolites, Antineoplastic; CD8-Positive T-Lymphocytes; Drug Combinations; Fluorouracil; Humans; Mice; Neoplasm Recurrence, Local; Oncolytic Viruses; Oxonic Acid; Pyridines; Tegafur; Triple Negative Breast Neoplasms

Brain metastasis (BM) is a rising challenge in forward-looking oncology, as its treatment choices are very limited, especially, after the failure of local treatment schemes.. We report on a 39-year-old Chinese woman who was diagnosed with stage IV triple-negative breast cancer(TNBC) with multiple brain, lung, and bone metastases. She had previously, undergone whole-brain radiation therapy. Paclitaxel, platinum, UTD1, capecitabine, gemcitabine, vinorelbine, and single-agent apatinib were then administered as first- to fifth-line therapies. She exhibited progression each time after a short period of disease stabilization.. Triple-negative breast cancer.. The patient chose treatment with apatinib+CPT-11+S-1 as the sixth-line therapy.. A remarkable response of the brain, and lung metastases, and alleviation of the brain edema were achieved, and these effects persisted for 7 months.. We describe the significant anti-tumor effect of apatinib + CPT-11 + S-1 against BMs from breast cancer. This report is the first to suggest potential approaches to BM treatment using this scheme and describes the effects of an apatinib-containing regimen on BMs.

Topics: Adult; Antineoplastic Combined Chemotherapy Protocols; Brain Edema; Brain Neoplasms; Camptothecin; Disease Progression; Drug Combinations; Female; Humans; Irinotecan; Lung Neoplasms; Neoplasm Staging; Oxonic Acid; Pyridines; Tegafur; Triple Negative Breast Neoplasms

A 73-year-old woman noticed a mass in her right breast about 1 year ago and consulted our hospital for an enlarged mass of about 10 cm in diameter.She was diagnosed with locally advanced triple negative breast cancer, and we initiated S-1 treatment as neoadjuvant chemotherapy.After 4 chemotherapy courses, computed tomography showed that the primary tumor had shrunk.Therefore, right mastectomy and axillary dissection were performed, and UFT was administered after surgery.She is currently alive with no recurrence 18 months after surgery.

Topics: Aged; Antimetabolites, Antineoplastic; Drug Combinations; Female; Humans; Oxonic Acid; Tegafur; Treatment Outcome; Triple Negative Breast Neoplasms