Into the wild of long non-coding RNA in gastrointestinal stromal tumors (GISTs) to explore new prognostic/predictive biomarkers

Background: Long Non-coding RNAs (lncRNA) are emerging as essential regulators of genetic and epigenetic networks, and their deregulation may underlie complex diseases, such as carcinogenesis. Several studies have described lncRNAs alterations in patients with solid tumors. In particular, in Gastrointestinal Stromal Tumors (GIST), upregulation of HOTAIR has been associated with aggressiveness, metastasis, and poor patients’ survival. In order to gain more detailed insight on the molecular role of lncRNAs in GIST, we analyzed in vivo the expression levels of lncRNAs H19 and MALAT1 in surgically resected patients. Material and Methods: The expression of the lnc-RNAs H19 and MALAT1 was evaluat…

EFFECT OF miR-21, miR-182 AND let-7i ON TSP-1 EXPRESSION IN COLON CANCER CELL LINE

Background: MicroRNAs (miRNAs) are small non-coding RNAs that regulate the expression of different genes, including genes involved in cancer progression, angiogenesis and metastasis. Thrombospondin-1 (TSP-1) has been shown to contrast angiogenesis in vivo. TSP-1 expression levels are inversely correlated with tumor vascularity and metastasis in colon cancer. Bio-informatic statistical analysis indicated that TSP-1 is hypothetical target of miR-21, miR-182, overexpressed in CRC, and let-7i which expression is down-regulated in this tumor. In this work we investigated whether TSP-1 expression could be regulated by miR-21, mir-182 and let-7i in HT29 colon cancer cell line. Methods: To investig…

Is there any room for PD-1 inhibitors in combination with platinum-based chemotherapy as frontline treatment of extensive-stage small cell lung cancer? A systematic review and meta-analysis with indirect comparisons among subgroups and landmark survival analyses

Background: The addition of PD-L1 inhibitors to platinum-based chemotherapy (CT) has newly received United States Food and Drug Administration (FDA) approval in extensive stage-small cell lung cancer (ES-SCLC). PD-1 agents similarly improved survival rates, even if not yet supported by international regulatory agencies. The current work aims to assess different efficacy and safety profiles among chemoimmunotherapy plus immuno-oncology (CT+IO) approaches according to different immune checkpoint inhibitor (ICI) subtypes. Material & Methods: We included in our meta-analysis six first-line randomised controlled trials (RCTs) comparing the association of single-agent ICI with CT versus CT al…

79 VUS VARIANTS IN BRCA GENES OF HEREDITARY BREAST/OVARIAN CANCER

1281P The prognostic impact of tissue tumour mutational burden (TMB) in the first-line treatment of advanced non-oncogene addicted non-small cell lung cancer (NSCLC): A systematic review and meta-analysis of randomized controlled trials

KRAS and BRAF as prognostic biomarkers in patients undergoing surgical resection of colorectal cancer liver metastasis: A systematic review and meta-analysis.

3565Background: Clinical trials investigated the potential role of both KRAS and BRAF mutations, as prognostic biomarkers, in colorectal cancer (CRC) patients who underwent surgical treatment of li...

P33.15 TMB in the First-Line Setting of NSCLC: A Systematic Review with Indirect Comparisons Between PD-1 and PD-L1 Inhibitors

P07.02 Detection of Molecular Residual Disease (MRD) using ctDNA in NSCLC: A Systematic Review and Meta-Analysis

Aurora-A Transcriptional Silencing and Vincristine Treatment Show a Synergistic Effect in Human Tumor Cells

Aurora-A is a centrosome-associated serine/threonine kinase that is overexpressed in multiple types of human tumors. Primarily, Aurora-A functions in centrosome maturation and mitotic spindle assembly. Overexpression of Aurora-A induces centrosome amplification and G 2 /M cell cycle progression. Recently, it was observed that overexpression of Aurora-A renders cells resistant to cisplatin (CDDP)-, etoposide-, and paclitaxel-induced apoptosis.Our results indicate that already in initial stages of cancer progression Aurora-A overexpression could have a major role in inducing supernumerary centrosomes and aneuploidy, as shown by immunohistochemistry on tissue sections from various stages of hu…

P48.10 Chemo-Immunotherapy in the Frontline of Extensive-Stage Small Cell Lung Cancer: A Systematic Review and Indirect Comparisons

Vulvar and Vaginal Cancers

Vulvar cancer and vaginal cancer are relatively rare tumors, typically affecting elder women, although they still represent the fourth and fifth, respectively, most common cancers in the gynecologic oncology field. Treatment of the early stages includes surgery and radiotherapy (external beam radiotherapy and brachytherapy). The sentinel lymph node sampling procedure is becoming the new standard of care in vulvar cancer. Chemotherapy has a role in combination with radiotherapy for the locoregional management or as palliative therapy for stage IV patients.

The effects of LIPUS on ctDNA release in the medium of NSCLC cell lines

Stabilizing versus Destabilizing the Microtubules: A Double-Edge Sword for an Effective Cancer Treatment Option?

Microtubules are dynamic and structural cellular components involved in several cell functions, including cell shape, motility, and intracellular trafficking. In proliferating cells, they are essential components in the division process through the formation of the mitotic spindle. As a result of these functions, tubulin and microtubules are targets for anticancer agents. Microtubule-targeting agents can be divided into two groups: microtubule-stabilizing, and microtubule-destabilizing agents. The former bind to the tubulin polymer and stabilize microtubules, while the latter bind to the tubulin dimers and destabilize microtubules. Alteration of tubulin-microtubule equilibrium determines th…

Non-Small Cell Lung Cancer Harboring Concurrent EGFR Genomic Alterations: A Systematic Review and Critical Appraisal of the Double Dilemma

The molecular pathways which promote lung cancer cell features have been broadly explored, leading to significant improvement in prognostic and diagnostic strategies. Epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) have dramatically altered the treatment approach for patients with metastatic non-small cell lung cancer (NSCLC). Latest investigations by using next-generation sequencing (NGS) have shown that other oncogenic driver mutations, believed mutually exclusive for decades, could coexist in EGFR-mutated NSCLC patients. However, the exact clinical and pathological role of concomitant genomic aberrations needs to be investigated. In this systematic review, we ai…

The prognostic role of KRAS and BRAF in patients undergoing surgical resection of colorectal cancer liver metastasis: a systematic review and meta-analysis

1818P Body mass index (BMI) is not a cancer risk factor for BRCA1/2 carriers: A systematic review and meta-analysis of case-control studies

Can the microRNA expression profile help to identify novel targets for zoledronic acid in breast cancer?

// Daniele Fanale 1, * , Valeria Amodeo 1, * , Viviana Bazan 1, * , Lavinia Insalaco 1 , Lorena Incorvaia 1 , Nadia Barraco 1 , Marta Castiglia 1 , Sergio Rizzo 1 , Daniele Santini 2 , Antonio Giordano 3 , Sergio Castorina 4, 5, # , Antonio Russo 1, # 1 Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy 2 University Campus Bio-Medico, Department of Medical Oncology, Rome, Italy 3 Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, College of Science and Technology, Temple University, Philadelphia, PA, USA 4 Fondazione Mediterranea “G.B. Morgagni”, Catania, Italy 5 Department of Biomedic…

33 EFFECT OF miR-21, miR-182 AND let-7i ON TSP-1 EXPRESSION IN COLON CANCER CELL LINE

Endometrial and Cervical Cancers

Uterine corpus and cervical cancers are showing, in the last decades, increasing incidence and mortality in industrialized and developing countries, respectively; on the other hand, innovative therapeutic strategies are emerging for the management of advanced gynecological malignancies. Risk factors and predisposing conditions are widely and continually studied; thus, prevention, through lifestyle correction and/or validated screening tests, could represent a promising tool to diagnose earlier and reduce mortality of uterine cancers. Herein, management of endometrial and cervical tumors from diagnosis to commonly applied standards of care and experimental frontiers are depicted so as to pro…

LncRNA H19, HOTAIR and MALAT1 as prognostic molecular biomarkers in GIST

HIF-1 is involved in the negative regulation of AURKA expression in breast cancer cell lines under hypoxic conditions

Numerous microarray-based gene expression studies performed on several types of solid tumors revealed significant changes in key genes involved in progression and regulation of the cell cycle, including AURKA that is known to be overexpressed in many types of human malignancies. Tumor hypoxia is associated with poor prognosis in several cancer types, including breast cancer (BC). Since hypoxia is a condition that influences the expression of many genes involved in tumorigenesis, proliferation, and cell cycle regulation, we performed a microarray-based gene expression analysis in order to identify differentially expressed genes in BC cell lines exposed to hypoxia. This analysis showed that h…

MicroRNAs in colorectal cancer stem cells: new regulators of cancer stemness?

Recently, the hypothesis that colorectal tumors originate from a subpopulation of cells called ‘cancer stem cells' (CSCs) or tumor-initiating cells, which exhibit stem-like features, has been confirmed experimentally in various human cancers. Several studies have confirmed the existence of colorectal CSCs (CRCSCs) and have demonstrated that this rare cell population can be isolated by the expression of specific cell surface biomarkers. MicroRNAs (miRNAs) are a class of small non-coding RNAs, which are crucial for post-transcriptional regulation of gene expression and participate in a wide variety of biological functions, including development, cell proliferation, differentiation, metabolism…

20P Is evaluation of phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha (PIK3CA) mutational status on circulating tumour DNA (ctDNA) by liquid biopsy ready for prime-time? A systematic review and an individual patient meta-analysis

Immuno-targeted combinations in oncogene-addicted non-small cell lung cancer

The identification of tumor “oncogenic drivers” and the subsequent development of targeted therapy represented a milestone in the treatment of lung cancer over the last years. Tumor genotyping has been incorporated into therapeutic decision making of advanced non-small cell lung cancer (NSCLC) since has become clear that individuals with actionable molecular alterations receiving a matched targeted agent certainly live longer and better. The recent understanding of biological mechanisms underlying cancer immune evasion has allowed the development of a new class of immunomodulatory agents which are able to reactivate host immune-response, offering the potential for long-term disease control …

Analysis of molecular mechanisms and anti-tumoural effects of zoledronic acid in breast cancer cells

Zoledronic acid (ZOL) is the most potent nitrogen-containing bisphosphonate (N-BPs) that strongly binds to bone mineral and acts as a powerful inhibitor of bone resorption, already clinically available for the treatment of patients with osteolytic metastases. Recent data also suggest that ZOL, used in breast cancer, may provide more than just supportive care modifying the course of the disease, though the possible molecular mechanism of action is still unclear. As breast cancer is one of the primary tumours with high propensity to metastasize to the bone, we investigated, for the first time, differential gene expression profile on Michigan Cancer Foundation-7 (MCF-7) breast cancer cells tre…