Active clinical trials for "Genetic Predisposition to Disease"

Background: Women in Xuan Wei County, China, are almost all non-smokers, yet they have the highest lung cancer rate in that country. Non-smoking women in Xuan Wei who use smoky coal for cooking and heating homes can inhale 10 times higher levels of polycyclic aromatic hydrocarbons (PAH, compounds formed in many burning organic substances, including smoky coal) than someone who smokes 20 cigarettes a day. Objectives: Determine the health effects of smoky coal in Xuan Wei and Fu Yuan counties in China's Yun Nan Province Determine how different levels of exposure to smoky coal and other types of fuel affect the amount of smoky coal emissions that are absorbed into the body Determine genetic risk factors for lung cancer in the study population and determine how they interact with smoky coal and PAH exposure. Eligibility: Women from Xuan Wei and Fu Yuan counties between 18 and 79 years of age who have lung cancer and do or do not use smoky coal Women from Xuan Wei and Fu Yuan counties between 18 and 79 years of age who do not have lung cancer and do or do not use smoky coal Design: -Exposure assessment study for users of smoky coal - 150 households Use of air badges, monitors, and dermal badges to determine subjects' exposure to smoky coal Collection of blood, urine, cheek cell and sputum samples to measure the amount of smoky coal emissions absorbed into the body and evaluate the types of biologic changes they cause Interview subjects about their health and family history, occupational exposures, lifestyle factors (e.g., tobacco smoking and diet), and inherited differences in genes -Case-control study - 1,000 women Collection of blood, urine, cheek cell and sputum samples to measure how amount of smoky coal emissions absorbed into the body and evaluate types of biologic changes they cause Interview subjects about their health and family history, occupational exposures, lifestyle factors (e.g., tobacco smoking and diet), and inherited differences in genes Gene analysis to determine if a genetic variation is associated with an increased or decreased risk of health effects from smoky coal exposure

This study investigates the association of genetic effects of rs7903146 and dietary intake on type 2 Diabetes Mellitus (T2DM) risk in a healthy population. T2DM risk was assessed through glycated haemoglobin (HbA1c) concentration in 73 subjects. Dietary intake was assessed using a validated food frequency questionnaire (FFQ).

This study will assess the hereditary component of pancreatic cancer in the largest series of patients up to date through the parallel analysis of 62 cancer-associated genes. The investigators will obtain germline DNA from blood samples that have been collected from 2000 to 2019 from patients with pancreatic cancer. The investigators plan to analyze germline DNA for mutations and single nucleotide polymorphisms (SNPs) in genes that have been previously linked to a predisposition towards cancer. The outcome can provide useful insight on the overall understanding of pancreatic pathogenesis while possible associations with age of diagnosis, tumor stage and other cancer types might arise. In addition to that, it can lead to the characterization of new variants or even new genes that predispose to pancreatic cancer. Confirmed deleterious mutations in established cancer genes can provide valuable clinical information that can lead to effective, individualized patient management. Furthermore, family relatives of the individuals found to carry mutations can also benefit from established screening protocols for various cancer types, such as frequent colonoscopies in the case of an MMR mutation predisposing for Lynch syndrome, or preventative surgeries in the case of a deleterious BRCA1 or BRCA2 mutation. In addition to that, specific therapies that have been previously shown to be effective in breast or ovarian cancer patients with BRCA1 & BRCA2 mutations, such as platinum-based chemotherapy and PARP inhibitors can be also effective in mutations carriers with pancreatic cancer.

Venous thromboembolism (VTE) is a common disease in cancer patients and one of the major causes of cancer-associated mortality. Risk for developing VTE increases when cancer patients are receiving chemotherapy. Current risk scores for predicting cancer-associated VTE in ambulatory patients had low/moderate discrimination and clinical sensitivity. These models use clinical and biochemical parameters of the patient. In the development of VTE genetics play a relevant role. The product Thrombo inCode (TiC) assess VTE risk prediction by using a combination of a genetic risk score (GRS) and clinical parameters from the patient. The investigators hypothesized that the GRS included in TiC combined with clinical parameter some of them associated with cancer could be better predicted by TiC than by current risk scores (Khorana score). After publishing the primary results in 2018, we have expanded the GRS in a external validation cohort adding gliomas and biliary tract tumors. Also we have incorporated the assessment of D-dimer in order to improve the predictive capability.

Three candidate single nucleotide polymorphisms in the RORC2 gene, rs9826 A/G, rs3790515 C/T and rs3828057 C/T were examined together with estimation of nuclear hormone retinoic acid receptor-related orphan receptor variant 2 serum levels to determine their possible association with susceptibility to and clinical phenotype of rheumatoid arthritis in Egyptian population.

Obesity is directly related to an increased risk of diabetes mellitus, hypertension, dyslipidemia, cardiovascular disease, and overall mortality. Weight loss is effective in decreasing these risks and to reduce disease severity. Bariatric surgery is an effective therapy for sustained weight loss and type 2 diabetes (T2D) remission in most of the morbidly obese patients. But there is also a significant number of individuals with an inappropriate response to bariatric surgery. Two recent retrospective studies assessed the role of genetic load as a predictor of this response, but the results are still unelucidated. The aim of this study is to assess whether a selection of genetic variants may allow us to identify individuals who will have a satisfactory response after bariatric surgery in terms of weight loss and T2D remission.

The research plan proposes translational studies in relevant animal models and human subjects in order to identify host (genetic) susceptibility factors that confer vulnerability to the prototypal air pollutant, ozone. The results will have significant impact upon, and aid in, understanding mechanisms regulating pro-oxidant lung injury, production and secretion of airway mucins, and clearance of respiratory mucus, and adverse health effects, that occur during and following exposure to airborne respiratory irritants.

This is a retrospective analysis of data collected within two previous studies. The data has been combined and used to investigate the impact of having a family history of hypertension on left ventricular muscle mass with and without controlling for moderate and vigorous intensity physical activity frequency per week. The hypothesis was that in a sample of mostly active participants, no differences in left ventricular mass between family history of hypertension groups would be observed, but the positive family history of hypertension group would have elevated left ventricular mass compared to the negative family history of hypertension group following statistical control of activity frequency.

The purpose of this study is to compare two methods for remote genetic counseling (telephone and two-way videoconferencing) for patients who are receiving disclosure of their APOE (apolipoprotein E) genotype. The target population will consist of males and females in the age range of 60-75 years who, as potential participants in a study (Generation Study), will need to receive genetic counseling and disclosure of APOE genotype. Subjects must be willing to receive genetic counseling and disclosure remotely. Subjects must be willing to be randomized to either telephone arm or videoconference arm.

Studies have shown that the effect of fat mass and obesity-associated (FTO) gene on obesity is modulated by lifestyle factors. Hence, we aimed to determine whether two single nucleotide polymorphisms (SNPs) in the FTO gene are associated with obesity and to assess whether these associations were modified by lifestyle factors. The study included 200 obese and 200 non-obese individuals from Turkey. Our study suggests that the effect of the SNPs on obesity traits is likely to be influenced by lifestyle factors in this Turkish population.