Single-Cell Transcriptome Analysis in Ovarian Steroid Cell Tumors-Not Otherwise Specified

This study conducted single-cell RNA sequencing on a 41-year-old woman with ovarian steroid cell tumors-not otherwise specified (SCT-NOS) and hyperandrogenism, identifying seven cell types, including four KRT19⁺ steroidogenic cell subtypes, within the tumor microenvironment. The analysis revealed aberrant gene expression related to ovarian steroidogenesis and steroid biosynthesis pathways, aligning with hyperandrogenism pathobiology. Additionally, five immune cell types were identified, with tumor-associated macrophages and dendritic cells being predominant. The findings provide insights into the cellular heterogeneity and molecular mechanisms of ovarian SCT-NOS, enhancing understanding and encouraging further research into this rare tumor type.