Abstract 5950
Background
Small bowel adenocarcinoma (SBA) is a rare malignancy that accounts for 1-2% of gastrointestinal tumours. We evaluated the clinico-pathological characteristics, outcomes and prognostic factors of patients who underwent surgery for SBA.
Methods
We retrospectively analysed the features and outcome parameters of 54 SBA patients from 6 italian institutions between 2005 and 2017.
Results
The primary tumour was in the duodenum, jejunum and ileum in 30 (55.6%), 18 (33.3%) and 6 (11.1%) patients, respectively. Among the 54 patients studied, adjuvant chemotherapy were performed in 35.2 % of patients with stage II and in 27.8 % of patients with stage III. Relapse rates were higher for chemonaive patients compared to treated patients (50% vs 23.5%). Median overall (OS) and progression-free survival (PFS) were 26.98 and 19.78 months, respectively. Duodenal adenocarcinoma (p = 0.022), lymph node metastases (p = 0.00269), long-term treatment with metformin (p = 0.0095), no adjuvant treatment (p = 0.0006) and PLR >0,1766 (p = 0,0137) were associated with poor overall survival outcomes. The factors associated with PFS were patients with older age (>75 years) (p = 0.04) and T4 according to TNM system (p = 0.02).
Conclusions
The lack of well-defined guidelines for treatment of SBA justifies the heterogeneity of therapeutic choices resulting in negative impact on patient outcomes. Thus, there is an urgent need for prognostic and predictive biomarkers to guide therapy decisions for these patients. Our results suggest that the site, lymph node metastases, metformin and PLR >0,1766 could be novel prognostic markers for SBA patients who undergo curative surgery. However, prospective studies are necessary to confirm the role of these factors and identify new potential biomarkers of treatment efficacy, that could improve the selection of the right treatment for the right patient.
Clinical trial identification
Legal entity responsible for the study
Modena University Hospital.
Funding
Has not received any funding.
Editorial Acknowledgement
Disclosure
All authors have declared no conflicts of interest.
Resources from the same session
1159 - Molecular characterization and search for founding effects in Canarian families with Hereditary Breast and Ovarian Cancer Syndrome
Presenter: Elisenda Llabres Valenti
Session: Poster display session: Basic science, Endocrine tumours, Gastrointestinal tumours - colorectal & non-colorectal, Head and neck cancer (excluding thyroid), Melanoma and other skin tumours, Neuroendocrine tumours, Thyroid cancer, Tumour biology & pathology
Resources:
Abstract
3725 - Effect of the polymorphism rs2066844 of the NOD2 gene on colon cancer incidence in a high cardiovascular risk population. Modulation by gender
Presenter: Judith Begona Ramirez Sabio
Session: Poster display session: Basic science, Endocrine tumours, Gastrointestinal tumours - colorectal & non-colorectal, Head and neck cancer (excluding thyroid), Melanoma and other skin tumours, Neuroendocrine tumours, Thyroid cancer, Tumour biology & pathology
Resources:
Abstract
3708 - Effect of the polymorphisms rs1476413, rs1801131, rs4846052 and rs6541003 of the MTHFR gene on prostate cancer in a high cardiovascular risk population
Presenter: Judith Begona Ramirez Sabio
Session: Poster display session: Basic science, Endocrine tumours, Gastrointestinal tumours - colorectal & non-colorectal, Head and neck cancer (excluding thyroid), Melanoma and other skin tumours, Neuroendocrine tumours, Thyroid cancer, Tumour biology & pathology
Resources:
Abstract
5057 - Association of a genetic variant in cyclin-dependent kinase Inhibitor 2A gene with the increased risk of breast cancer
Presenter: Soodabeh Shahid Sales
Session: Poster display session: Basic science, Endocrine tumours, Gastrointestinal tumours - colorectal & non-colorectal, Head and neck cancer (excluding thyroid), Melanoma and other skin tumours, Neuroendocrine tumours, Thyroid cancer, Tumour biology & pathology
Resources:
Abstract
5970 - Investigating the role of HAT protein TIP60 in regulating functional dynamics of nuclear receptor PXR
Presenter: KARISHMA BAKSHI
Session: Poster display session: Basic science, Endocrine tumours, Gastrointestinal tumours - colorectal & non-colorectal, Head and neck cancer (excluding thyroid), Melanoma and other skin tumours, Neuroendocrine tumours, Thyroid cancer, Tumour biology & pathology
Resources:
Abstract
1360 - The role of downregulated SIRT3 expression in patients with hepatocellular carcinoma
Presenter: Hanhee Jo
Session: Poster display session: Basic science, Endocrine tumours, Gastrointestinal tumours - colorectal & non-colorectal, Head and neck cancer (excluding thyroid), Melanoma and other skin tumours, Neuroendocrine tumours, Thyroid cancer, Tumour biology & pathology
Resources:
Abstract
1634 - Prediction and Intervention of Colorectal Cancer Risk with Artificial Intelligent System
Presenter: Yang Ge
Session: Poster display session: Basic science, Endocrine tumours, Gastrointestinal tumours - colorectal & non-colorectal, Head and neck cancer (excluding thyroid), Melanoma and other skin tumours, Neuroendocrine tumours, Thyroid cancer, Tumour biology & pathology
Resources:
Abstract
4921 - Measuring the Efficiency of Cancer Care in Europe
Presenter: Rikard Althin
Session: Poster display session: Basic science, Endocrine tumours, Gastrointestinal tumours - colorectal & non-colorectal, Head and neck cancer (excluding thyroid), Melanoma and other skin tumours, Neuroendocrine tumours, Thyroid cancer, Tumour biology & pathology
Resources:
Abstract
1235 - Circulating cell-free DNA isolated from plasma of mesenteric veins predicts prognosis in stage II colorectal cancer patients
Presenter: Chih-Yung Yang
Session: Poster display session: Basic science, Endocrine tumours, Gastrointestinal tumours - colorectal & non-colorectal, Head and neck cancer (excluding thyroid), Melanoma and other skin tumours, Neuroendocrine tumours, Thyroid cancer, Tumour biology & pathology
Resources:
Abstract
5169 - _lonality of uterine carcinosarcoma as a factor of clinical prognosis.
Presenter: Natalia Levitskaya
Session: Poster display session: Basic science, Endocrine tumours, Gastrointestinal tumours - colorectal & non-colorectal, Head and neck cancer (excluding thyroid), Melanoma and other skin tumours, Neuroendocrine tumours, Thyroid cancer, Tumour biology & pathology
Resources:
Abstract