Mutational Analysis of Oncogenic AKT1 Gene Associated with Breast Cancer Risk in the High Altitude Ecuadorian Mestizo Population

Breast cancer is the leading cause of cancer-related death among women worldwide. AKT1 encodes the kinase B alpha protein. The rs121434592, rs12881616, rs11555432, rs11555431, rs2494732, and rs3803304 single nucleotide polymorphisms have been identified in the AKT1 kinase gene. Activated AKT1 phosph...

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Veröffentlicht in:BioMed research international 2018-01, Vol.2018 (2018), p.1-10
Hauptverfasser: Paz-y-Miño, César, Guevara-Ramírez, Patricia, Arcos-Villacís, Nathaly, Freire-Paspuel, Byron, Leone, Paola E., López-Cortés, Andrés, Rosales, Felipe
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container_title BioMed research international
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creator Paz-y-Miño, César
Guevara-Ramírez, Patricia
Arcos-Villacís, Nathaly
Freire-Paspuel, Byron
Leone, Paola E.
López-Cortés, Andrés
Rosales, Felipe
description Breast cancer is the leading cause of cancer-related death among women worldwide. AKT1 encodes the kinase B alpha protein. The rs121434592, rs12881616, rs11555432, rs11555431, rs2494732, and rs3803304 single nucleotide polymorphisms have been identified in the AKT1 kinase gene. Activated AKT1 phosphorylates downstream substrates regulating cell growth, metabolism, apoptosis, angiogenesis, and drug responses. It is essential to know how breast cancer risk is associated with histopathological and immunohistochemical characteristics and genotype polymorphisms in a high altitude Ecuadorian mestizo population. This is a retrospective case-control study. DNA was extracted from 185 healthy and 91 affected women who live 2,800 meters above sea level. Genotypes were determined by genomic sequencing. We found a possible association between the noncoding intronic variant rs3803304 and breast cancer risk development: GG (odds ratio [OR] = 5.2; 95% confidence interval [CI] = 1.3-20.9; P ≤ 0.05; Q > 0.05). Regarding pathologic characteristics, we found significant risk between estrogen receptor, progesterone receptor, and HER2 status and molecular subtypes (P ≤ 0.001; Q ≤ 0.05). On the other hand, we did not find risk between variants and histopathological characteristics. Despite the small sample size, we found that the intronic variant, AKT1 rs3803304, may act as a predictive biomarker in the risk of developing breast cancer in the high altitude Ecuadorian mestizo population.
doi_str_mv 10.1155/2018/7463832
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AKT1 encodes the kinase B alpha protein. The rs121434592, rs12881616, rs11555432, rs11555431, rs2494732, and rs3803304 single nucleotide polymorphisms have been identified in the AKT1 kinase gene. Activated AKT1 phosphorylates downstream substrates regulating cell growth, metabolism, apoptosis, angiogenesis, and drug responses. It is essential to know how breast cancer risk is associated with histopathological and immunohistochemical characteristics and genotype polymorphisms in a high altitude Ecuadorian mestizo population. This is a retrospective case-control study. DNA was extracted from 185 healthy and 91 affected women who live 2,800 meters above sea level. Genotypes were determined by genomic sequencing. We found a possible association between the noncoding intronic variant rs3803304 and breast cancer risk development: GG (odds ratio [OR] = 5.2; 95% confidence interval [CI] = 1.3-20.9; P ≤ 0.05; Q &gt; 0.05). Regarding pathologic characteristics, we found significant risk between estrogen receptor, progesterone receptor, and HER2 status and molecular subtypes (P ≤ 0.001; Q ≤ 0.05). On the other hand, we did not find risk between variants and histopathological characteristics. 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This is an open access article distributed under the Creative Commons Attribution License (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 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Guevara-Ramírez, Patricia ; Arcos-Villacís, Nathaly ; Freire-Paspuel, Byron ; Leone, Paola E. ; López-Cortés, Andrés ; Rosales, Felipe</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c499t-c9d6fd75d4b03b2e4edbbc1c64d529d6f77b7174062c4980283b426c3f9669ce3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Age</topic><topic>AKT1 protein</topic><topic>Altitude</topic><topic>Angiogenesis</topic><topic>Apoptosis</topic><topic>Biomarkers</topic><topic>Biomarkers, Tumor</topic><topic>Breast cancer</topic><topic>Breast Neoplasms - genetics</topic><topic>Cancer</topic><topic>Case-Control Studies</topic><topic>Cell growth</topic><topic>Confidence intervals</topic><topic>Deoxyribonucleic acid</topic><topic>Development and progression</topic><topic>DNA</topic><topic>Drug metabolism</topic><topic>Ecuador</topic><topic>ErbB-2 protein</topic><topic>Estrogens</topic><topic>Female</topic><topic>Genes</topic><topic>Genetic aspects</topic><topic>Genetic Predisposition to Disease</topic><topic>Genotype</topic><topic>Genotypes</topic><topic>Health aspects</topic><topic>Health risks</topic><topic>High altitude</topic><topic>High-altitude environments</topic><topic>Humans</topic><topic>Kinases</topic><topic>Lung cancer</topic><topic>Measuring instruments</topic><topic>Medical prognosis</topic><topic>Medical research</topic><topic>Metabolism</topic><topic>Middle Aged</topic><topic>Molecular chains</topic><topic>Mutation</topic><topic>Oncogenes</topic><topic>Pathology</topic><topic>Physiological aspects</topic><topic>Polymorphism, Single Nucleotide</topic><topic>Population</topic><topic>Progesterone</topic><topic>Prostate cancer</topic><topic>Proteins</topic><topic>Proto-Oncogene Proteins c-akt - genetics</topic><topic>Retrospective Studies</topic><topic>Risk</topic><topic>Risk factors</topic><topic>Sea level</topic><topic>Single nucleotide polymorphisms</topic><topic>Single-nucleotide polymorphism</topic><topic>Substrates</topic><topic>Women</topic><topic>Womens health</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Paz-y-Miño, César</creatorcontrib><creatorcontrib>Guevara-Ramírez, Patricia</creatorcontrib><creatorcontrib>Arcos-Villacís, Nathaly</creatorcontrib><creatorcontrib>Freire-Paspuel, Byron</creatorcontrib><creatorcontrib>Leone, Paola E.</creatorcontrib><creatorcontrib>López-Cortés, Andrés</creatorcontrib><creatorcontrib>Rosales, Felipe</creatorcontrib><collection>الدوريات العلمية والإحصائية - e-Marefa Academic and Statistical Periodicals</collection><collection>معرفة - المحتوى العربي الأكاديمي المتكامل - e-Marefa Academic Complete</collection><collection>Hindawi Publishing Complete</collection><collection>Hindawi Publishing Subscription Journals</collection><collection>Hindawi Publishing Open Access Journals</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Biotechnology Research Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Neurosciences Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Health &amp; 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AKT1 encodes the kinase B alpha protein. The rs121434592, rs12881616, rs11555432, rs11555431, rs2494732, and rs3803304 single nucleotide polymorphisms have been identified in the AKT1 kinase gene. Activated AKT1 phosphorylates downstream substrates regulating cell growth, metabolism, apoptosis, angiogenesis, and drug responses. It is essential to know how breast cancer risk is associated with histopathological and immunohistochemical characteristics and genotype polymorphisms in a high altitude Ecuadorian mestizo population. This is a retrospective case-control study. DNA was extracted from 185 healthy and 91 affected women who live 2,800 meters above sea level. Genotypes were determined by genomic sequencing. We found a possible association between the noncoding intronic variant rs3803304 and breast cancer risk development: GG (odds ratio [OR] = 5.2; 95% confidence interval [CI] = 1.3-20.9; P ≤ 0.05; Q &gt; 0.05). Regarding pathologic characteristics, we found significant risk between estrogen receptor, progesterone receptor, and HER2 status and molecular subtypes (P ≤ 0.001; Q ≤ 0.05). On the other hand, we did not find risk between variants and histopathological characteristics. Despite the small sample size, we found that the intronic variant, AKT1 rs3803304, may act as a predictive biomarker in the risk of developing breast cancer in the high altitude Ecuadorian mestizo population.</abstract><cop>Cairo, Egypt</cop><pub>Hindawi Publishing Corporation</pub><pmid>30065942</pmid><doi>10.1155/2018/7463832</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0003-3351-2275</orcidid><orcidid>https://orcid.org/0000-0002-4829-3653</orcidid><orcidid>https://orcid.org/0000-0002-6693-7344</orcidid><orcidid>https://orcid.org/0000-0003-1503-1929</orcidid><oa>free_for_read</oa></addata></record>
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subjects Age
AKT1 protein
Altitude
Angiogenesis
Apoptosis
Biomarkers
Biomarkers, Tumor
Breast cancer
Breast Neoplasms - genetics
Cancer
Case-Control Studies
Cell growth
Confidence intervals
Deoxyribonucleic acid
Development and progression
DNA
Drug metabolism
Ecuador
ErbB-2 protein
Estrogens
Female
Genes
Genetic aspects
Genetic Predisposition to Disease
Genotype
Genotypes
Health aspects
Health risks
High altitude
High-altitude environments
Humans
Kinases
Lung cancer
Measuring instruments
Medical prognosis
Medical research
Metabolism
Middle Aged
Molecular chains
Mutation
Oncogenes
Pathology
Physiological aspects
Polymorphism, Single Nucleotide
Population
Progesterone
Prostate cancer
Proteins
Proto-Oncogene Proteins c-akt - genetics
Retrospective Studies
Risk
Risk factors
Sea level
Single nucleotide polymorphisms
Single-nucleotide polymorphism
Substrates
Women
Womens health
title Mutational Analysis of Oncogenic AKT1 Gene Associated with Breast Cancer Risk in the High Altitude Ecuadorian Mestizo Population
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