Mónica S. Sierra

ORCID: 0000-0003-1286-057X
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About
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Research Areas
  • Global Cancer Incidence and Screening
  • Cervical Cancer and HPV Research
  • Hepatitis B Virus Studies
  • Colorectal Cancer Screening and Detection
  • Eosinophilic Esophagitis
  • Helicobacter pylori-related gastroenterology studies
  • Global Public Health Policies and Epidemiology
  • Genetic factors in colorectal cancer
  • Genital Health and Disease
  • Gastrointestinal disorders and treatments
  • Reproductive tract infections research
  • BRCA gene mutations in cancer
  • Head and Neck Cancer Studies
  • Pregnancy and Medication Impact
  • Carcinogens and Genotoxicity Assessment
  • Gastric Cancer Management and Outcomes
  • Microbial infections and disease research
  • Gastroesophageal reflux and treatments
  • Viral-associated cancers and disorders
  • Lymphoma Diagnosis and Treatment
  • Cancer Risks and Factors
  • DNA Repair Mechanisms
  • Cleft Lip and Palate Research
  • Reproductive System and Pregnancy
  • Genomics and Chromatin Dynamics

National Cancer Institute
2020-2025

Division of Cancer Epidemiology and Genetics
2020-2025

National Institutes of Health
2020-2023

Hospital de León
2017-2019

The Task Force for Global Health
2018

Centers for Disease Control and Prevention
2018

Centre International de Recherche sur le Cancer
2016

Canadian Standards Association
2015

University of Alberta
2013

Hospital Universitario de Maracaibo
2010

<h3>Objective</h3> The global burden of colorectal cancer (CRC) is expected to increase by 60% more than 2.2 million new cases and 1.1 deaths 2030. In this study, we aim describe the recent CRC incidence mortality patterns trends linking findings prospects reducing through prevention care. <h3>Design</h3> Estimates sex-specific rates in 2012 were extracted from GLOBOCAN database. Temporal assessed for 37 countries using data <i>Cancer Incidence Five Continents</i> (CI5) volumes I–X WHO...

10.1136/gutjnl-2015-310912 article EN Gut 2016-01-27

Abstract Background The authors investigated the durability of vaccine efficacy (VE) against human papillomavirus (HPV)16 or 18 infections and antibody response among nonrandomly assigned women who received a single dose bivalent HPV compared with multiple doses unvaccinated women. Methods were between HPV16 18-vaccinated aged to 25 years one (N = 112), two 62), three 1365) doses, age- geography-matched 1783) in long-term follow-up Costa Rica Vaccine Trial. Cervical measured at study visits,...

10.1093/jnci/djaa011 article EN public-domain JNCI Journal of the National Cancer Institute 2020-01-30

Cancer burden is increasing in Central and South America (CSA). We describe the current of cancer CSA. obtained regional national-level incidence data from 48 population-based registries (13 countries) nation-wide mortality WHO (18 countries). estimated world population age-standardized rates per 100,000 person-years. The leading cancers diagnosed were prostate, lung, breast, cervix, colorectal, stomach, which also primary causes mortality. Countries high/very high human development index...

10.1016/j.canep.2016.07.013 article EN cc-by-nc-nd Cancer Epidemiology 2016-09-01

• Stomach cancer incidence and mortality rates varied by 6 5–6-fold, respectively. The highest was seen in Chile, Costa Rica, Colombia, Ecuador, Brazil Peru. Chile (males) Guatemala (females) had some of the world. Incidence declined 4% annually Brazil, Rica from 1997 to 2008. Mortality Non-cardia cancers were 2–13-times more frequent than cardia cancers. Central South America (CSA) are among We describe current burden stomach CSA. obtained regional national-level data 48 population-based...

10.1016/j.canep.2016.03.008 article EN cc-by-nc-nd Cancer Epidemiology 2016-09-01

Central and South America comprise one of the areas characterized by high incidence rates for head neck cancer. We describe geographical temporal trends in mortality cancers American region order to identify opportunities intervention on major identified risk factors: tobacco control, alcohol use viral infections. obtained regional- national-level data from 48 population-based cancer registries 13 countries deaths WHO database 18 countries. Age-standardized (ASR) (ASMR) per 100,000...

10.1016/j.canep.2016.03.012 article EN cc-by-nc-nd Cancer Epidemiology 2016-09-01

More than 20 years after cytology-based screening was introduced in Central and South America (CSA), cervical cancer remains a leading cause of incidence mortality the region. Although several population-based registries exist region, few comprehensive analyses have been conducted to describe status control. Population-based data from 13 countries 18 CSA were analyzed. Standardized rates estimated time trend analysis performed when information available. In addition, search available on HPV...

10.1016/j.canep.2016.07.015 article EN cc-by-nc-nd Cancer Epidemiology 2016-09-01

The colorectal cancer (CRC) burden is increasing in Central and South American due to an ongoing transition towards higher levels of human development. We describe the CRC region review current status disease control. obtained regional- national-level incidence data from 48 population-based registries 13 countries, as well deaths WHO mortality database for 18 countries. estimated world population age-standardized (ASR) (ASMR) rates per 100,000 person-years 2003–2007 annual percentage change...

10.1016/j.canep.2016.03.010 article EN cc-by-nc-nd Cancer Epidemiology 2016-09-01

Although malignant tumors of the brain and central nervous system (CNS) represent less than 3% new cancer cases estimated worldwide, they cause significant morbidity in case gliomas, most common histological type, have a poor prognosis. We describe patterns trends CNS incidence mortality Central South America. obtained regional- national-level data from 48 population-based registries 13 countries deaths WHO database for 18 countries. world population age-standardized rates (ASRs) (ASMRs) per...

10.1016/j.canep.2016.04.007 article EN cc-by-nc-nd Cancer Epidemiology 2016-09-01

The burden of breast cancer has increased worldwide. Breast mortality been increasing in Central and South America (CSA) the last few decades. We describe current CSA review status disease control. obtained regional- national-level incidence data from 48 population-based registries 13 countries deaths WHO database for 18 countries. estimated world population age-standardized rates per 100,000 person-years 2003–2007 annual percentage change to time trends. In most recent 5-year period,...

10.1016/j.canep.2016.08.010 article EN cc-by-nc-nd Cancer Epidemiology 2016-09-01

New approaches to control HPV infections and prevent progression cervical precancer are needed. We investigate the probability of viral clearance in women infected with HPV16/18 without evidence at study enrollment inform research efforts targeted reducing cancer. included 530 aged 18-25 who tested DNA-positive did not have cytological high-grade-squamous-intraepithelial-lesion (HSIL) CVT. At each visit, clinicians collected cells for cytology HPV-DNA testing. Those abnormal were referred...

10.1016/j.vaccine.2025.126841 article EN cc-by-nc Vaccine 2025-02-16

The incidence of prostate cancer has increased in Central and South America (CSA) the last few decades. We describe geographical patterns trends CSA. obtained regional national-level data from 48 population-based registries 13 countries nation-wide deaths WHO mortality database for 18 countries. estimated world population age-standardized (ASR) (ASMR) rates per 100,000 person-years 2003–2007 annual percent change (EAPC) to time trends. Prostate was most common diagnosis one leading causes...

10.1016/j.canep.2016.06.010 article EN cc-by-nc-nd Cancer Epidemiology 2016-09-01

Helicobacter pylori infection affects about half of the world's population and is usually acquired in childhood. The has been associated with chronic gastritis, peptic ulcer, stomach cancer adulthood. Little known, however, its consequences on child health. We examined effect H. growth among school-age children Colombian Andes by comparing velocity presence absence infection.Children who were 4-8 years old 2004 followed up a community where infected received anti-H. treatment (n = 165)...

10.1097/ede.0b013e3181fe7e31 article EN Epidemiology 2010-11-11

Incidence of thyroid cancer (TC) is rapidly increasing worldwide, but little known about the TC burden in Central and South America (CSA). We describe geographic patterns trends by sex CSA. obtained regional- national-level incidence data from 48 population-based registries 13 countries nationwide deaths WHO mortality database for 18 countries. estimated world population age-standardized rates (ASRs) (ASMRs) per 100,000 person-years. calculated ASRs histological subtype. annual percentage...

10.1016/j.canep.2016.07.017 article EN cc-by-nc-nd Cancer Epidemiology 2016-09-01

Very little is known about the burden of cutaneous melanoma in Central and South America, despite existence a reasonable amount population-based data. We present data on incidence calculated standardized way for as well an overview primary secondary prevention issues region.

10.1016/j.canep.2016.02.005 article EN cc-by-nc-nd Cancer Epidemiology 2016-03-29

HPV vaccination of adolescent girls is the most effective measure to prevent cervical cancer. The World Health Organization recommends that receive two doses vaccine but only a small proportion from regions with highest disease burden are vaccinated because cost and logistical considerations. Our Costa Rica Vaccine trial suggested one dose bivalent provides robust lasting protection against persistent infections for over decade. Data post-licensure quadrivalent in India also single may be...

10.1016/j.vaccine.2021.11.041 article EN cc-by-nc-nd Vaccine 2021-11-29

The burden of non-Hodgkin lymphoma (NHL) has increased in some Central and South American countries. We describe the current patterns trends NHL incidence mortality America. obtained regional- national-level data from 48 population-based cancer registries 13 countries, WHO database for 18 estimated world population age-standardized rates (ASRs) (ASMRs) per 100,000 person-years 2003–2007, presented distributions by histological subtype. varied between countries 2–8- 6-fold, respectively. ASRs...

10.1016/j.canep.2016.05.008 article EN cc-by-nc-nd Cancer Epidemiology 2016-09-01

Central and South American countries (including Cuba) are experiencing rapid socio-demographic epidemiologic changes the nature of health problems undergoing transition from infectious to chronic diseases, including cancer. Countries poorly prepared respond effectively subsequent challenges posed by new patterns disease. Existing data delineating number cancer cases distribution types each country in region sparse due limitations on information systems for recording incidence mortality...

10.1016/j.canep.2016.04.008 article EN cc-by-nc-nd Cancer Epidemiology 2016-09-01

We conducted a case-control study to determine risk factors for developing encephalitis among West Nile virus cases when compared with age-, gender and race/ethnicity-matched hospitalized controls. In the multivariable conditional logistic regression analysis, we identified following independent associated being an case: hypertension (OR 4.0; P = 0.005), immunosuppressing conditions 5.6; 0.001) cardiovascular disease 28.3; < 0.001). Individuals these comorbidities should be targeted...

10.1111/j.1863-2378.2008.01197.x article EN Zoonoses and Public Health 2009-01-19

Abstract Human Papillomavirus (HPV) type variants have been classified into lineages and sublineages based upon their whole genome sequence. Here we examined the specificity of antibodies generated following natural infection with lineage oncogenic types (HPV16, 18, 31, 33, 45, 52 58) by testing serum samples assembled from existing archives women residing in Africa, The Americas, Asia or Europe against representative lineage-specific pseudoviruses for each genotype. We subjected resulting...

10.1038/s41467-024-45807-w article EN cc-by Nature Communications 2024-02-21

Lung cancer is the most commonly diagnosed and leading cause of death in world. In Central South America lung now one frequent cancers cancer-related both sexes. We describe patterns trends incidence mortality give a brief overview current status tobacco control measures based on recent MPOWER report. obtained regional national-level data from 48 population-based registries 13 countries deaths WHO database for 18 countries. estimated world population age-standardized rates per 100,000...

10.1016/j.canep.2016.03.002 article EN cc-by-nc-nd Cancer Epidemiology 2016-09-01

Oesophageal cancer shows marked geographic variations and is one of the leading causes death worldwide. We described burden this malignancy in Central South America. Regional national level incidence data were obtained from 48 population-based registries 13 countries. Mortality WHO mortality database. Incidence oesophageal by histological subtype available high-quality registries. Males had higher rates than females (male-to-female ratios: 2–6:1 2–5:1). In 2003–2007, highest Brazil, Uruguay,...

10.1016/j.canep.2016.03.013 article EN cc-by-nc-nd Cancer Epidemiology 2016-09-01

Gallbladder carcinoma (GBC) is a rare neoplasm yet it the most common malignancy of biliary tract and its prognosis poor. Incidence GBC high in some areas Central South America Caribbean. We described current burden (CSA). obtained incidence data from 48 population-based cancer registries 13 countries CSA, national level death WHO mortality base for 18 countries. estimated World population age-standardized rates per 100,000 persons-years, including distribution by anatomic subsite. were...

10.1016/j.canep.2016.07.021 article EN cc-by-nc-nd Cancer Epidemiology 2016-09-01
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