GASTROESOPHAGEAL CANCER EPIDEMIOLOGY AND CLINICAL PRESENTATION. Prof Eric Van Cutsem, MD, PhD University Hospitals Leuven Belgium

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1 GASTROESOPHAGEAL CANCER EPIDEMIOLOGY AND CLINICAL PRESENTATION Prof Eric Van Cutsem, MD, PhD University Hospitals Leuven Belgium

2 Leuven city hall and University

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4 Leuven: capital of beer AnheuserBusch-InBev Some important AB-Inbev brands are Stella Artois, Beck s, Jupiler, Budweiser, Leffe, Labatt, Hoegaerden, Bass and Corona.

5 Outline Incidence and Mortality in US Global Incidence and Mortality Incidence and Mortality in Europe Analytical Epidemiology: Etiology Courtesy A Cervantes for some slides

6 Gastric Cancer Epidemiology * Declining in incidence * 4th commonest cancer globally * 934,000 new cases per year * 2nd most common cause of death (700,000) globally * 2/3 of cases in Asia * 42% of cases in China * Early gastric cancer 5 year survival >90%

7 Ten leading cancer types for the estimated new cases in USA by sex in Siegel RL et al. Cancer Statistics, CA Cancer J Clin 2015; 65; 5-29

8 Ten leading cancer types for the estimated deaths in USA by sex in Siegel RL et al. Cancer Statistics, CA Cancer J Clin 2015; 65; 5-29

9 Trends in death rates for selected types of cancer in males in USA. Siegel RL et al. Cancer Statistics, CA Cancer J Clin 2015; 65; 5-29

10 Stage distribution of esophageal cancer from In USA by race. All races White black Siegel RL et al. CA Cancer J Clin 2015; 65; 5-29

11 5 Year relative survival of esophageal cancer by race and stage at diagnosis from In USA. All races White black Siegel RL et al. Cancer Statistics, CA Cancer J Clin 2015; 65; 5-29

12 Estimated Number of New Cancer Cases in 21 World Areas, *Region estimates do not sum to the worldwide estimate due to calculation method. Source: GLOBOCAN Torre LA et al. Global Cancer Statistics, CA Cancer J Clin 2015; 65;

13 Estimated new cancer cases and deaths worldwide Torre LA et al. Global Cancer Statistics, CA Cancer J Clin 2015; 65;

14 Estimated new cancer cases and deaths worldwide in developed countries Torre LA et al. Global Cancer Statistics, CA Cancer J Clin 2015; 65;

15 Estimated new cancer cases and deaths worldwide in developing countries Torre LA et al. Global Cancer Statistics, CA Cancer J Clin 2015; 65;

16 Gastric cancer incidence rate by sex and world area Torre LA et al. Global Cancer Statistics, CA Cancer J Clin 2015; 65;

17 New cancer cases attributable to infection in 2008 Plummer M, et al. Int J Cancer 2015; 136:

18 Esophageal cancer incidence rate by sex and world area Torre LA et al. Global Cancer Statistics, CA Cancer J Clin 2015; 65;

19 Age-specific 5-year relative survival gastric cancer diagnosed in The EUROCARE-5 De Angelis R et al. Lancet Oncol 2014; 15:23-34.

20 Age-standardized 5-year relative survival for gastric cancer followed up in The EUROCARE-5 De Angelis R et al. Lancet Oncol 2014; 15:23-34.

21 European mean age-standardized 5-year relative survival for adult cancer patients diagnosed in The EUROCARE-5 De Angelis R et al. Lancet Oncol 2014; 15:23-34.

22 Trends in incidence rate in men for esophageal cancer in Europe: rising incidence of adenocarcinoma. SCC ADENO Castro C et al. Ann Oncol 2014; 25;

23 Risk factors Male > Female (2:1) Smoking Nutrition GERD - obesity H. pylori infection Atrofic gastritis Partial gastrectomy Genetic predisposition (e.g. HNPCC, FAP, hereditary diffuse gastric cancer, Peutz Jeghers) Waddel T et al. 2014

24 Gastro-esophageal cancer and Body Mass index Turati F et al. Ann Oncol 2013; 24;

25 FACTS ON GASTRIC CANCER EPIDEMIOLOGY-1 Incidence of gastric cancer is decreasing in developed countries Incidence and mortality remains high in developing countries However it is still a severe global health issue Males:Females 2:1 Wide variation in incidence accross countries Highest incidence in East Asia (Korea, Japan, Mongolia and China), Central and Eastern Europe and South America Lowest incicence in North America, Nothern Europe and Africa

26 FACTS ON GASTRIC CANCER EPIDEMIOLOGY-2 Regional variations reflect differences in dietary patterns, food storage and availability of fresh products Prevalence of Helicobacter pylori infection Chronic infection of H. Pylori accounts for 90% of cases of non cardia gastric cancer Declining incidence may be due to: Increase availability of fresh fruits and vegetables Decreased reliance in salt preserved food Decreased incidence of H. pylori infection Decreased smoking in western countries Ford AC, et al. Br Med J 2014; 348; g3174.

27 FACTS ON GASTRIC CANCER EPIDEMIOLOGY-3 Increased Incidence and Mortality of upper third gastric cancer plus junctional and lower third adenocarcinoma of the esophagus In USA and Europe and in countries where the incidence of non cardia gastric cancer is low Predominant in males with high BMI and tobacco users

28 Etiology of Gastro-esophageal Junction Adenocarcinoma Esophageal Adenocarcinoma Gastric Adenocarcinoma H.pylori protective + H.pylori infection leading cause Obesity + Obesity ± Barrett s esophagus + Barrett s esophagus - Smoking + Smoking + Alcohol + Alcohol +

29 Siewert Classification for GE Junction Adenocarcinoma

30 Majority of gastric cancers present at late stage % 50 Stage of Gastric Cancer at Diagnosis I II III IV 5-year Survival by Stage at Diagnosis 95% 77% 50% 5%

31 Clinical Presentation of Gastric Cancer Clinical presentation depends on stage of disease at diagnosis Early gastric cancer asymptomatic or incidental GI symptoms epigastric pain, bloating, indigestion Advanced gastric cancer Nausea / vomiting, hematemesis/malena, weight loss, gastric outlet obstruction, peritoneal effusion

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