Most noncardia gastric cancers are attributable to chronic mucosal inflammation due to Helicobacter pylori infection and some tumors also contain monoclonal Epstein-Barr virus (EBV). We are studying the descriptive epidemiology of this disease and the roles of EBV infection and of inflammation gene polymorphisms in its etiology and outcomes. We are studying clonal expansion of lymphocytes as a potential precursor of non-Hodgkin's lymphoma in HIV infection and the general population, using multiple prospective cohorts with banked peripheral blood cells. IIB studies have implicated cytokine signaling dysregulation as an important etiologic factor for AIDS-related lymphoma. Both elevated blood levels as well as genetic variation in these pathways are predictive of subsequent lymphoma risk. Despite marked advances in antiretroviral therapy, cancer continues to be a major source of morbidity in AIDS.

National Institute of Health (NIH)
National Cancer Institute (NCI)
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Division of Cancer Epidemiology and Genetics
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Breyer, Benjamin N; Huang, Wen-Yi; Rabkin, Charles S et al. (2016) Sexually transmitted infections, benign prostatic hyperplasia and lower urinary tract symptom-related outcomes: results from the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial. BJU Int 117:145-54
Camargo, M Constanza; Bowlby, Reanne; Chu, Andy et al. (2016) Validation and calibration of next-generation sequencing to identify Epstein-Barr virus-positive gastric cancer in The Cancer Genome Atlas. Gastric Cancer 19:676-81
Camargo, M Constanza; Kim, Kyoung-Mee; Matsuo, Keitaro et al. (2016) Anti-Helicobacter pylori Antibody Profiles in Epstein-Barr virus (EBV)-Positive and EBV-Negative Gastric Cancer. Helicobacter 21:153-7
Camargo, M C; Rabkin, C S; Appel, N et al. (2015) Variable association of height with gastric cancer by anatomical subsite. Cancer Causes Control 26:1361
Weitmann, Kerstin; Hirt, Carsten; Schwarz, Sabine et al. (2015) Influence of reproductive history and exogenous hormone use on prevalence and frequency of circulating t(14;18)-positive cells in a population-based cross-sectional study. Cancer Causes Control 26:455-65
Camargo, M Constanza; Beltran, Mauricio; Conde-Glez, Carlos J et al. (2015) Serological response to Helicobacter pylori infection among Latin American populations with contrasting risks of gastric cancer. Int J Cancer 137:3000-5
Camargo, M Constanza; Freedman, Neal D; Hollenbeck, Albert R et al. (2014) Height, weight, and body mass index associations with gastric cancer subsites. Gastric Cancer 17:463-8
Camargo, M Constanza; García, Apolinaria; Riquelme, Arnoldo et al. (2014) The problem of Helicobacter pylori resistance to antibiotics: a systematic review in Latin America. Am J Gastroenterol 109:485-95
Camargo, M Constanza; Koriyama, Chihaya; Matsuo, Keitaro et al. (2014) Case-case comparison of smoking and alcohol risk associations with Epstein-Barr virus-positive gastric cancer. Int J Cancer 134:948-53
Bonequi, Patricia; Meneses-González, Fernando; Correa, Pelayo et al. (2013) Risk factors for gastric cancer in Latin America: a meta-analysis. Cancer Causes Control 24:217-31

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