Cremona Population-Based Gastric Tumors Registry

March 3, 2017 updated by: Bianca Maria Donida, Ph.D, Medicina e Arte Onlus

Epidemiological, Clinical and Pathological Characteristics of Gastric Tumors. The Population Based Specialized Registry in Northern Italy

Gastric cancer remains one of the leading causes of cancer-related deaths worldwide. There is difference between different countries in the world in the incidence and outcome. Also Italy on its inside shows a variability between regions and Lombardy hold the most incidence and mortality Italian rate, with the province of Cremona as one of the leading area with its gastric cancer mortality rate. (http://www.aslcremona.it/html/atlante/introduzione.htm). Tumor specialized registry can be viewed as one of the main strategies for studying and monitoring the impact of an important cancer diagnosis. In addition the information obtained from it can be translated into preventive measures and health surveillance that might lead to a better control of this tumor in a province with a so high mortality rate. Project purpose is to define the incidence of gastric cancer in the province of Cremona and the correlation with environmental, familiar, genetic and social factors; to adopt prevention strategies to reduce the impact of the disease and to create a gastric cancer bio-bank, including blood and tissue samples, for collaborative research projects regarding molecular and cellular aspects of gastric cancer.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

Background: Gastric cancer (GC) is the 5th most common cancer and the 3rd leading cause of cancer-related deaths worldwide. GC incidence and mortality rates vary widely across different geographical areas. In Italy the province of Cremona is characterized by an high incidence, compared with the national one. For these reason a specialized population based registry was set up.

Methods: Up to now the collection encompasses all the GC cases diagnosed in Cremona province from January 1st 2010 until December 31st 2015. The main data sources were represented by the pathological records and the patient clinical charts. Data were collected following AIRTum (Associazione Italiana Registri Tumori) and IARC (International Agency for Research on Cancer) cancer registration recommendations. Territory of Cremona province comprises 3 main public hospitals and 3 private structures. All of them refer to 2 pathology services. All these facilities were involved in the project. A minority of patients usually ask for different surgery and move to neighboring provinces, mainly Milan and Brescia. An official collaboration with these facilities was signed in order to have the access to the data of their patients who were inhabitants of the province of Cremona. A multidisciplinary team of clinicians (oncologists, gastroenterologists, general practitioners, surgeons), pathologists, geneticists and methodologists (epidemiologists, hygienists) was involved in the project.

The registration of an incident case usually began with the pathological confirmation of diagnosis of cancer. Subsequently, medical records were obtained. For each case the following variables were registered: personal and familiar data; imaging studies performed; details on surgery and other treatments received; host genetic background and biomolecular characteristic, social and environmental factors. All data were collected, recorded, protected and processed in accordance to AIRTum-IARC (International Agency for Research on Cancer) cancer registration recommendations and national privacy laws.

Any age at diagnosis was included. At the time of diagnosis patients had to be inhabitants of the province of Cremona (districts of Crema, Cremona or Casalmaggiore). Only diagnoses of primary gastric neoplasms were considered. Precancerous lesions and relapsed tumor diagnoses were not considered. For the specific purposes of our study, we didn't record cases diagnosed based on Death Certificate Only (DCO)"in situ" tumors were also included.

Site of the tumor at diagnosis was stomach or gastro-esophageal junction (GEJ), ref. cod. ICD-X C16, according to the UICC, 7th ed.

All gastric malignancies were considered: gastric cancer; lymphoma; sarcoma and GIST. Gastric cancer was classified according to the Lauren's classification system, which distinguishes two main histological types: "intestinal" and "diffuse" . "Mixed" gastric carcinomas composed of intestinal and diffuse components have also been identified.

The primary tumor location was divided into three groups in consideration not only of the oncological but also of the surgical approach. Such groups were 1) GEJ-cardia; 2) body-fundus; 3) antrum-pylorus-angulus.

The TNM classification was recorded and the corresponding pathological stage was determined according to the 7th edition of the Union for International Cancer Control (UICC) and hereditary cases according to International GC Linkage Consortium guidelines.

Evaluation of the infection of Helicobacter pylori (HP) was performed by immunohistochemistry (IHC) in health gastric mucosa using the GIEMSA stain method. The HER-2 oncogene overexpression was evaluated in tumour gastric mucosa by the IHC method Dako Hercept TestTM. Results were confirmed by Fluorescent in Situ Hybridization (FISH) when IHC positivity score was 2.

To individuate Hereditary Diffuse Gastric Cancer (HDGC) cases, criteria by International GC Linkage Consortium 2010 guidelines were followed.

Incidence, standard errors, and 95% confidence intervals (CI) were calculated according to the International Agency for Research on Cancer (IARC) general guidelines. As for CIs, the method that considered the approximation to the Poisson distribution was chosen. Age-specific incidence rates were stratified into 18 subgroups by 5-year age interval (0 - 4, to 85+ years). Raw age-specific (5-years classes) and age-standardised (age-adjusted) rates were calculated per 100,000 inhabitants. For raw rates the denominator was the resident population census at 31st December of each year, available online at the official site of Cremona province. An age-standardized rate (ASR) is a weighted average of the age-specific (raw) rate, where the weight is the proportion of individuals in the corresponding age group of a standard population. Age-standardised rates were calculated using the standard age-structure of the European (EU) and World (W) standard population. This corrects the potential confounding effect derived from the differences in age between different populations. The trend of incidence, expressed as "Annual Percent Change" (APC) was evaluated using Join Point (National Cancer Institute, Bethesda, MD) in order to identify significant changes. Overall survival analysis was carried out by Kaplan-Meier methods and statistically significant differences were evaluated by Log-Rank Test . Survival hazard ratio was evaluated by Cox regression model, subsequently the testing of the proportion of hazard. Cumulative risks and other variables, including age at diagnosis, anatomical subsite, morphology of the tumour, TNM stage at diagnosis, presence of HP infection, HER-2 amplification status, 5-year survival and 1-year mortality rate were reported too. Descriptive statistics were used to summarize the data and parametric and non-parametric tests were used to evaluate differences between groups. Statistical analysis was carried out by STATA 13 software package (Texas, USA). A p-value less than 0.05 vas considered as statistically significant.

Study Type

Observational

Enrollment (Anticipated)

1000

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

      • Cremona, Italy, 26100
        • Recruiting
        • Medical Oncology Department of Istituti Ospitalieri di Cremona
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Gastric Cancer

Description

PATIENTS ELEGIBILY : Any patients age at GC cancer diagnosis was included. Male and female patients were either included. Healthy volunteers were not included. At the time of diagnosis of cancer patients must be a province of Cremona inhabitants (districts of Crema, Cremona or Casalmaggiore). Informed consent signature was required.

TUMOR ELEGIBLY: Diagnosis must be performed from 2010 Juanuary, the 1st to 2013 December, 31st .The diagnosis must be of a infiltrating malignant tumor. The diagnosis should be of a primary tumor. Precancerous diagnosis were not considered. Recidivate tumor were not considered. The site of localization of the tumor at diagnosis must be stomach or gastro - esophageal junction as site of tumor onset.

HDGC ELEGIBILY : Gastric cancer is a known manifestation of inherited cancer predisposition syndromes similar to hereditary nonpolyposis colon cancer and Li-Fraumeni syndrome. According to the OMIM database, more than 90 per cent of gastric cancers are sporadic, whereas less than 10 per cent are hereditary (HDGC). Germline E-cadherin inactivating mutations in the CDH1 gene are responsible for the development of GC in approximately 30% of families with the hereditary diffuse gastric cancer syndrome (HDGC). Diagnostic criteria for HDGC are formulated by the International Gastric Cancer Linkage Consortium in 1999 and then they are reviewed in 2010. In order to individuate HDGC case and to included them in a specialist counselling and CDH-1 gene mutation evaluation, criteria by International GC Linkage Consortium 2010 guidelines were followed.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Collection of life-style, familiar, clinical, histological and biomolecular data
Time Frame: Five Years
Five Years

Secondary Outcome Measures

Outcome Measure
Time Frame
Collection of biological samples (blood and cancer tissue samples)
Time Frame: Five Years
Five Years

Other Outcome Measures

Outcome Measure
Time Frame
Analysis of epidemiology, risk factors, family history and unidentified susceptibility genes and proteins
Time Frame: Five Years
Five Years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

January 1, 2010

Primary Completion (Anticipated)

December 1, 2018

Study Completion (Anticipated)

December 1, 2018

Study Registration Dates

First Submitted

August 7, 2012

First Submitted That Met QC Criteria

August 9, 2012

First Posted (Estimate)

August 10, 2012

Study Record Updates

Last Update Posted (Actual)

March 6, 2017

Last Update Submitted That Met QC Criteria

March 3, 2017

Last Verified

March 1, 2017

More Information

Terms related to this study

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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