- ICH GCP
- Registro de ensaios clínicos dos EUA
- Ensaio Clínico NCT00304941
Insulin Resistance and Breast Cancer
Breast Cancer and Insulin Resistance: Implications for Preventive Counseling in Familial and Sporadic Cases
This study will characterize risk factors associated with breast cancer development in some patients. In particular, it will examine the role of insulin in breast cancer in patients with and without a family history of the disease.
Women 30 to 70 years old who have been diagnosed with breast cancer and matched control healthy subjects with and without a family history of breast cancer may be eligible for this study.
Participants undergo the following procedures:
- Cancer-genetic counseling session, including family history, risk assessment, genetic testing for BRCA1 and BRCA2 (if criteria is met), interpretation of results and management options
- Medical history, including questions about symptoms or diseases, reproductive history, use of oral contraceptives, body weight, exercise, lifestyle, and demographic issues
- Drawing of family tree
- Examination of medical records
- Blood drawing for genetic and other tests
- CT scan of the abdomen (approximate time < 1 minute)
- Filling out questionnaires
Visão geral do estudo
Status
Condições
Descrição detalhada
The etiology of breast cancer is still poorly understood with known risk factors explaining only a small proportion of cases. Risk factors that modulate the development of breast cancer include: age, geographic location, socioeconomic status, reproductive events, exogenous hormones, lifestyle, familial history of breast cancer, mammographic density, history of benign breast disease, ionizing radiation, and bone density.
Several lines of evidence have demonstrated that insulin and the insulin receptor play a key role in the formation and progression of breast cancer. Insulin has direct and indirect effects on breast cancer; direct effects as a growth promoting factor and indirect effects through actions on other hormones involved in breast cancer. In addition, certain conditions associated with insulin resistance, such as obesity and abdominal fat, are known risk factors for breast cancer.
Family history of breast cancer is also a well established major risk factor. To date, both genetic and non-genetic factors have been suggested to influence breast cancer risk in women with a positive family history of breast cancer including those with recognized mutations in the BRCA1 and BRCA2 genes. Women with a family history of breast cancer inherit a susceptibility to the condition; the development of the disease requires a series of promoting steps including lifestyle, diet, and environmental factors. Several hormones involved in breast cancer such as IGF-1, testosterone, and SHBG are affected by a positive family history of breast cancer. Also, women with a high Waist-to-Hip ratio (WHR) and a positive family history of breast cancer are at higher risk of developing breast cancer than those women with a high WHR without a positive family history. The role of insulin and insulin-related factors in women with a family history of breast cancer has not been examined.
There is growing recognition that insulin may be a potential mediator of breast cancer. The above evidence suggests that actions of insulin may be involved in the promoting steps that predispose some women to breast cancer. These findings provide the biological basis for insulin related factors to serve as potential targets for breast cancer prevention and risk assessment.
The main goal of this proposal is to unravel the contributions of insulin and insulin-related actions (e.g. insulin resistance, abdominal fat) on breast cancer risk. The purpose of the present study is to characterize the role of insulin in newly diagnosed premenopausal and postmenopausal women with and without a family history of breast cancer. The objective is to assess the relative strength of each risk factor associated with insulin actions and their individual impact on breast cancer. This study will provide data that may serve as the basis for future studies on preventive strategies targeted at lowering insulin levels and increasing insulin sensitivity (e.g. decrease glucose, decrease abdominal fat, decrease omega-6 fatty acids/increase omega-3 fatty acids, increase fiber intake, increase exercise) in a subset of patients.
This protocol will recruit only female patients, and will concentrate only on breast cancer risk. Subjects will be asked to complete several questionnaires in the course of genetic counseling to provide information on medical and reproductive history, demographics, risk factors, physical activity as well as other information needed to establish an appropriate sample for the study. Genetic testing will be offered as part of the initial evaluation and to check for BRCA1/2 mutation status.
Tipo de estudo
Inscrição (Real)
Contactos e Locais
Locais de estudo
-
-
Maryland
-
Bethesda, Maryland, Estados Unidos, 20892
- National Institutes of Health Clinical Center, 9000 Rockville Pike
-
-
Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
Aceita Voluntários Saudáveis
Gêneros Elegíveis para o Estudo
Descrição
- ELIGIBILITY CRITERIA:
Females (ages 30-70 years old) who have been diagnosed with breast cancer and age matched controls with and without a family history of breast cancer.
The actual selection of patients most appropriate for research and clinical training needs will be made by protocol investigators.
Referrals will be accepted from the patient recruitment office of the NIH, genetic counselors, geneticists, oncologists, and other health care providers in the area or anybody who reads the information about the study on the NIH world wide web site.
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
Colaboradores e Investigadores
Publicações e links úteis
Publicações Gerais
- Dumitrescu RG, Cotarla I. Understanding breast cancer risk -- where do we stand in 2005? J Cell Mol Med. 2005 Jan-Mar;9(1):208-21. doi: 10.1111/j.1582-4934.2005.tb00350.x.
- Wolf I, Sadetzki S, Catane R, Karasik A, Kaufman B. Diabetes mellitus and breast cancer. Lancet Oncol. 2005 Feb;6(2):103-11. doi: 10.1016/S1470-2045(05)01736-5.
- Milazzo G, Giorgino F, Damante G, Sung C, Stampfer MR, Vigneri R, Goldfine ID, Belfiore A. Insulin receptor expression and function in human breast cancer cell lines. Cancer Res. 1992 Jul 15;52(14):3924-30.
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo
Conclusão do estudo
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Estimativa)
Atualizações de registro de estudo
Última Atualização Postada (Real)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Palavras-chave
Termos MeSH relevantes adicionais
Outros números de identificação do estudo
- 060119
- 06-CH-0119
Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .
Ensaios clínicos em Câncer de mama
-
Turku University HospitalLounais-Suomen SyöpäyhdistysAinda não está recrutandoSobrevivente de cancerFinlândia
-
Roswell Park Cancer InstituteNational Cancer Institute (NCI)RetiradoSobrevivente de cancerEstados Unidos
-
University of Alabama at BirminghamNational Cancer Institute (NCI); Auburn UniversityConcluído
-
Rutgers, The State University of New JerseyNational Cancer Institute (NCI)ConcluídoSobrevivente de cancerEstados Unidos
-
Wake Forest University Health SciencesNational Cancer Institute (NCI)ConcluídoSobrevivente de cancerEstados Unidos, Guam
-
Wake Forest University Health SciencesNational Cancer Institute (NCI); National Institute of Mental Health (NIMH)ConcluídoSobrevivente de cancerEstados Unidos
-
Masonic Cancer Center, University of MinnesotaConcluídoSobrevivente de cancerEstados Unidos
-
Abramson Cancer Center of the University of PennsylvaniaConcluídoPlano de cuidados de sobrevivência LIVESTRONG: coleta contínua de dados e pesquisa de acompanhamentoPaciente com cancerEstados Unidos
-
University of New MexicoNew Mexico State University; University of New Mexico Cancer CenterConcluído
-
Ohio State University Comprehensive Cancer CenterConcluídoSobrevivente de cancerEstados Unidos