Early detection of ovarian cancer

Diaz, E.; Burky, Robert; Hummel, Charles S.; Farias‐Eisner, Robin

doi:10.1586/eog.13.3

Cited by 1 publication

(1 citation statement)

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“…Cancer of the ovary covers a histologically and genetically broad range of tumors, with high-grade serous ovarian cancer (HGSOC) being responsible for 70–80% of all ovarian cancer deaths 2 . HGSOC represents one of the subtypes of the most prevalent ovarian cancer type, epithelial ovarian cancer (EOC), which accounts for approximately 90% of the cases 3 . Endometrioid ovarian carcinoma (EOVC) represents an uncommon subtype of EOC, accounting for approximately 10% of all ovarian tumors 4 .…”

Section: Introductionmentioning

confidence: 99%

Genomic landscape and immune-related gene expression profiling of epithelial ovarian cancer after neoadjuvant chemotherapy

et al. 2022

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Platinum-based neoadjuvant chemotherapy followed by interval debulking surgery is an accepted treatment for patients with stage III or IV epithelial ovarian cancer who are not suitable for primary debulking surgery. The identification of suitable adjuvant treatments in these patients is an unmet need. Here, we explore potential genomic characteristics (mutational and immune-associated expression profiles) in a series of patients undergoing neoadjuvant chemotherapy. Tumor samples from biopsy and interval debulking surgery were analyzed for mutational landscape and immune profiling, together with detailed immunohistochemistry using different immune cell markers, and correlated with clinicopathological characteristics and potential response to neoadjuvant chemotherapy. No major differences in the mutational landscape were observed in paired biopsy and surgery samples. Genomic loss of heterozygosity was found to be higher in patients with total/near-total tumor response. The immune gene expression profile after neoadjuvant chemotherapy revealed activation of several immune regulation-related pathways in patients with no/minimal or partial response. In parallel, neoadjuvant therapy caused a significant increase of tumor-infiltrating lymphocyte population abundance, primarily due to an augmentation of the CD8+ T cell population. Remarkably, these changes occurred irrespective of potential homologous recombination defects, such as those associated with BRCA1/2 mutations. Our study strengthens the use of loss of heterozygosity as a biomarker of homologous repair deficiency. The changes of immune states during neoadjuvant chemotherapy reveal the dynamic nature of tumor-host immune interactions and suggest the potential use of immune checkpoint inhibitors or their combination with poly-ADP polymerase inhibitors in high stage and grade epithelial ovarian cancer patients undergoing neoadjuvant therapy.

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Section: Introductionmentioning

confidence: 99%