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Analysis of the Progression of Cervical Cancer in a Low-and-middle-income Country: From Pre-malignancy to Invasive Disease

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Specialties Microbiology
Oncology
Date 2024 Dec 13
PMID 39672307
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Abstract

To better understand cervical cancer progression, we analyzed RNA from 262 biopsies from women referred for colposcopy. We determined the HPV type and analyzed the expression of 51 genes. HPV31 was significantly more prevalent in precancer than stage 1 cancer and invasive cancer (p < 0.0001), and HPV16 increased in invasive disease (p < 0.0001). CCNE1, MELTF, and ULBP2 were significantly increased in HPV16-positive compared to HPV31 precancers, while NECTIN2 and HLA-E expression decreased. Markers of the innate immune system, DNA repair genes, and cell cycle genes are significantly increased during cancer progression (p = 0.0001). In contrast, the TP53 and RB1 tumor suppressor gene expression is significantly decreased in cancer cells. The T cell markers CD28 and FLT3LG expression decreased in cancer while FOXP3, IDO1, and ULBP2 expression increased. There is a significantly higher survival rate in individuals with increased expression of CD28 (p = 0.0005), FOXP3 (p = 0.0002), IDO1 (p = 0.038), FLT3LG (p = 0.026), APOBEC3B (p = 0.0011), and RUNX3 (p = 0.019), and a significantly lower survival rate in individuals with increased expression of ULBP2 (p = 0.035). These results will help us elucidate the molecular factors influencing the progression of cervical precancer to cancer. Understanding the risk of progression of specific HPV types and sublineages may aid in the triage of positive patients, and better knowledge of the immune response may aid in developing and applying immunotherapies.

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