ArticleIn vivo (Athens, Greece)
Efficacy of S-1 Monotherapy for Salivary Duct Carcinoma With
Article in In vivo (Athens, Greece). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
BACKGROUND/
aimSalivary duct carcinoma (SDC) is a rare, highly aggressive subtype of salivary gland carcinoma, commonly characterized by overexpression of erb-b2 receptor tyrosine kinase 2 [ERBB2, commonly known as human epidermal growth factor receptor 2 (HER2)] and androgen receptor positivity. Anti-HER2 therapy, platinum-based chemotherapy, and androgen-deprivation therapy (ADT) are commonly provided as standard systemic treatments for advanced SDC; however, effective therapeutic options after failure of these treatments remain limited. The clinical efficacy of S-1 monotherapy in SDC and its predictive biomarkers are not well established. Herein, we present a case in which S-1 monotherapy showed efficacy in a case of SDC after resistance to anti-HER2 therapy, platinum-based chemotherapy, and ADT. CASE REPORT: The patient was a 70-year-old man diagnosed with HER2-positive and androgen receptor-positive SDC of the submandibular gland, who presented with multiple lung metastases. He initially received trastuzumab plus docetaxel as first-line therapy, followed by platinum-based chemotherapy and ADT, but experienced disease progression after each treatment. Comprehensive genomic profiling revealed amplifications of
conclusionS-1 monotherapy may represent a treatment option for patients with advanced SDC refractory to anti-HER2 therapy, platinum-based chemotherapy, and ADT, particularly in cases harboring
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