Immunotherapy · 2024
Treatment and prognostic implications of strong PD-L1 expression in primary hepatic sarcomatoid carcinoma.
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Radhakrishnan Subathra, Martin Catherine Ann, Vij Mukul, Subbiah Komalavalli, Raju Lexmi Priya, Gowrishankar Gowripriya, Veldore Vidya Harini, Kaliamoorthy Ilankumaran, Rammohan Ashwin, Rela Mohamed
Аннотация
Primary hepatic sarcomatoid carcinoma (HSC) is an extremely rare and aggressive subtype of primary liver cancer. HSC has uncertain pathogenesis and dismal prognosis with overall survival of only 8.3 months. The molecular alterations of HSC are also not well understood. In this study, the authors describe a patient who presented with a large liver mass. The patient underwent complete surgical resection and histological examination demonstrated HSC, infiltrating the stomach. PD-L1 was strongly positive in the tumor cells. The patient was started on anti-PD-L1 immunotherapy postsurgery and is doing well 15 months after surgical resection. Tumor whole exome sequencing revealed genetic alterations in TP53, NF2 and MAGEC3 genes, indicating their potential role in tumor development.