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Epidemiology and Genetics Research Program
Division of Cancer Control and Population Sciences
November 19, 2004


EGRP BULLETIN
From the Office of
Edward Trapido, Sc.D., Associate Director
Epidemiology and Genetics Research Program
Division of Cancer Control and Population Sciences
National Cancer Institute

This issue of NCI's Epidemiology and Genetics Research Program (EGRP) Bulletin brings you news about:

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EGRP Holds 1st Annual Leadership Conference for Epidemiologists

Photo of Dr. Edward Trapido, Dr. Catherine DeAngelis, and Dr. Robert Croyle The Epidemiology and Genetics Research Program (EGRP) held its first annual leadership workshop with investigators focusing on tobacco, diet/energy balance, and genetic research in Chicago, September 19-21.

Seasoned principal investigators funded through EGRP were asked to the by-invitation-only-meeting. "We are especially excited to have funded leaders in the field of epidemiology, tobacco, and diet/energy balance sharing their time to identify future research directions. We believe this will help lay the groundwork for future NCI initiated and supported research," said Edward Trapido, Sc.D., EGRP Associate Director. More than 100 grantees, intramural epidemiologists with NCI's Division of Cancer Epidemiology and Genetics (DCEG), and EGRP scientific staff attended.

The goal of The 1st NCI Epidemiology Leadership Workshop was to identify barriers and gaps in cancer epidemiology and to advance solutions to study of tobacco, diet/energy balance, and genes. It also brought together grantees to highlight state-of-the-science findings in these areas, provide opportunities to explore new collaborations, and to showcase the scientific accomplishments of the EGRP-supported research portfolio.

Integrate Epidemiology In To Initiatives

"The meeting comes at a time when biomedical research is faced with many issues and initiatives that cut across scientific disciplines," said Robert Croyle, Ph.D., Director of the Division of Cancer Control and Population Sciences (DCCPS). " Genomics and proteomics research alone cannot answer epidemiologic questions. We need to know how to integrate epidemiology in these new initiatives, and we need epidemiologists to become more involved in planning them."

Keynote speaker Catherine DeAngelis, M.D., M.P.H., Editor-in-Chief of the Journal of the American Medical Association, talked about the importance of epidemiologic studies to public health. In another keynote address, Susan Curry, Ph.D., presented on the relevance to epidemiology of the report Fulfilling the Potential for Cancer Prevention and Early Detection, by the Institute of Medicine's National Cancer Policy Board. She is lead editor of the report and is Director of the Institute for Health Research and Policy, University of Illinois at Chicago.

Presentations by workshop participants included Laurence Kolonel, M.D., Ph.D., Cancer Research Center, University of Hawaii, on diet, genes, and cancer; Neil Caporaso, M.D., DCEG, on tobacco, genes, and cancer; Stephen Chanock, M.D., DCEG and the Center for Cancer Research (CCR), on genetics in epidemiology; Michael Thun, M.D., M.S., American Cancer Society, on cohort consortia; and Patricia Hartge, Sc.D., DCEG, on case-control consortia. Also speaking were Graham Colditz, M.D., Dr.P.H., Brigham and Women's Hospital, Harvard University, on the potential conflict between team science and tenure requirements, and Jon Kerner, Ph.D., DCCPS Deputy Director, on knowledge transfer of epidemiology.

Follow-up Working Groups

Research working groups will be formed based on the discussions in the breakout sessions which focused on diet/energy balance epidemiology research, haplotypes versus genotypes, design issues and strategies in the study of rare cancers, and susceptibility to tobacco carcinogenesis. Extramural and intramural scientists will collaborate in the groups to generate new scientific ideas and hypotheses.

Other small working groups will assist in developing research initiatives within and outside NCI. EGRP's Virginia (Ginny) Hartmuller, Ph.D., R.D., Sandra Melnick, Dr.P.H., and Deborah Winn, Ph.D., will play lead roles in the organization and stewardship of these teams.

To further translation of research findings, EGRP will assess whether the information presented at the workshop has potential for development of intervention studies. During the workshop, participants were encouraged to think about scientific issues and questions that will move results from epidemiology studies into public health practice.

Increased Collaboration

Increased collaborations between EGRP and the extramural research community is key as evidenced by the workshop, which was planned with the assistance of Margaret Spitz, M.D., M.P.H., The University of Texas M.D. Anderson Cancer Center. She and Dr. Colditz spend time working each month at EGRP under the Intergovernmental Personnel Act (IPA).

A workshop report will be prepared and posted along with the presentations on EGRP's Web site. To be informed when this information becomes available, contact andersoL2@mail.nih.gov. Posters that were presented at the meeting and highlights of the proceedings will be a resource for researchers interested in diet, tobacco, and genetics.

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New Centralized Administrative Structure Providing Grant Support

DCCPS Director Robert Croyle, Ph.D., recently wrote to grantees about the National Institutes of Health (NIH) moving toward a new, centralized administrative structure to support the functions of grants management, peer review, and scientific program management that occur within extramural Centers and Divisions. NIH's Division of Extramural Activities Support (DEAS) is now responsible for all extramural-related support staff functions. If you have not seen the communication, please see do so; it might explain differences that you are experiencing in service. Your Program Director did not change with this restructuring. Access the DCCPS home page, and see "Message of the Month."

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New Staff Appointments

EGRP has four new staff members to introduce:

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Seminara To Head New Consortia Research Working Group

Daniela Seminara, Ph.D., M.P.H., has been named Leader of EGRP's newly formed Consortia Research Working Group. The Working Group will facilitate the ability of interdisciplinary epidemiological sciences to better address emerging scientific questions and issues. Bringing together researchers who are studying the same disease site or the same risk factors to collaborate and pool exposure data and biospecimens is becoming increasingly important in order to detect patterns of disease, and to study the influence of gene-gene and gene-environment interactions on development of cancer. (Dr. Seminara's photograph appears in "Risk Prediction Models Workshop" article.)

With Dr. Seminara's leadership, the Working Group will be the coordinating body for consortia-related activities managed by EGRP Program Directors. It will foster the design, implementation, and evaluation of large-scale epidemiologic consortia funded by EGRP.

The Working Group also will work with the Program Directors and scientific community to identify research gaps that can only be met through consortia, and develop consortia initiatives that address these needs and take advantage of related opportunities. Another important function will be to develop best practice guidelines to speed the creation of consortia and enhance their effectiveness. Dr. Seminara has been instrumental in developing consortia among EGRP grantees and brings her expertise to this new role. She is Program Director for the EGRP-funded Breast and Colon Cancer Family Registries (CFRs) and for several other consortia focusing on lung, prostate, colorectal, and pancreatic cancer; Ataxia-Telangiectasia (A-T) and familial cancer; and radiation and female cancers. Investigators or research groups interested in establishing consortia may contact Dr. Seminara, CGERB, at seminard@mail.nih.gov.

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Job Openings With EGRP

EGRP has two job opportunities available for Cancer Research Training Award (CRTA) fellows. The positions are to work on the:

The salary range depends on the CRTA category and years of experience. The fellows will work in EGRP's offices in Rockville, Md., a suburb of Washington, D.C.

Please refer to EGRP's Web site to read the complete position advertisements and to learn where to send letters of interest, curriculum vitaes, and names and contact information for references.

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Mukesh Verma, Ph.D.Epigenetics - A New Frontier in Cancer Research
By Mukesh Verma, Ph.D., AERB Program Director

Epigenetics is the study of modifications in gene expression that do not involve changes in DNA nucleotide sequences, and represents a new frontier in cancer research for epidemiologists to consider. This field offers great potential for identification of biomarkers that can be used to assess individual risk for cancer and to detect and diagnose the disease in its earliest stages.

Epigenetic Targets in Cancer Detection and Risk AssessmentInformation in the genome exists in at least two forms, genetic and epigenetic. The genetic information provides the blueprint for the manufacture of all the proteins necessary to create a living organism, whereas the epigenetic information provides additional instructions on how, where, and when the genetic information will be used. Epigenetics is the study of mechanisms that involve mitotically heritable changes in DNA other than changes in nucleotide sequence.

The functional importance of epigenetic changes lies in their ability to regulate gene expression. Epigenetic changes have an impact on chromatin structure modulation, transcriptional repression, X-chromosome inactivation, genomic imprinting, and the suppression of the detrimental effects of repetitive and parasitic DNA sequences on genome integrity. Three major steps in epigenetic regulation are promoter methylation, histone acetylation/deacetylation, and chromatin conformational changes.

During the initiation, development, and progression of cancer, a number of genes undergo epigenetic changes. Some of these changes can be used as biomarkers for early detection of cancer and for risk assessment, as well as to follow a treatment. A panel of biomarkers is preferred to a single biomarker in clinical assays.

In epidemiologic studies, biochemical and genetic markers have been utilized to identify high-risk populations that are likely to develop cancer. Inclusion of epigenetic markers in population studies is advantageous for screening and for etiologic studies. Some of the well-characterized epigenetic markers are in the cell cycle, tumor initiation, and apoptotic pathways. These epigenetic markers have been reported in colon, esophageal, lung, pancreatic, and prostate cancers. Changes in gene expression due to epigenetic regulation can be reversed by chemicals, and this approach opens up a novel approach in cancer prevention and treatment.

Epigenetics-mediated gene regulation is affected by several factors. In the field of carcinogenesis research, there is growing awareness that neoplastic transformation must be viewed as an environmental process. A variety of chemicals, base analogs, radiation, smoke, stress, hormones (such as estradiol), other agents (such as nickel, arsenic, cadmium), and reactive oxygen species can alter mammalian cells to a transformed phenotype epigenetically, without changing their DNA sequence information. It is of interest that nickel induces both a variety of signaling pathways as well as genes that seem to be important for the survival of cancer cells. Nutrients also can affect epigenetic regulation of cancer associated genes.

Led by EGRP, an NIH-wide interest group has been established to explore application of epigenetic knowledge in the diagnosis, prevention, and treatment of cancer and other diseases. Extramural researchers will be able to access information made available through the interest group on a newly created Web site.

Selected readings:

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Risk Prediction Models Workshop Sets Priorities

Estimating absolute risk of cancer can have profound implications for targeted prevention strategies and clinical decision-making. To improve the capability, more than 100 experts met for a workshop about cancer risk prediction models in Washington, D.C., this spring.

"This interdisciplinary workshop broke ground by bringing together the cancer risk prediction modeling community for the first time and helping identify the research steps needed to move this field forward," said Andrew Freedman, Ph.D., workshop cochair with the Applied Research Program (ARP), DCCPS. The workshop was cosponsored by DCCPS, DCEG, and the NCI Office of Women's Health.

The workshop included four sessions on risk prediction models: applications, development and implementation, evaluation and validation, and predicting germ line mutation carrier status. Poster sessions presented models in use or under development, including models for melanoma and breast, lung, colorectal, and prostate cancers, and for genetic susceptibility to colorectal and breast cancers.

"After intensive discussions between model developers and clinicians, there was consensus that model performance should be judged in the context of specific applications and that further methodological research is needed to develop criteria for model assessment", said Ruth Pfeiffer, Ph.D., workshop cochair with DCEG.

Priorities for future research include identifying cancer sites for which new risk prediction models are useful, finding ways to improve current and future cancer risk prediction models by incorporating new clinical and biological markers, and providing data resources and study populations for modeling and validation.

A workshop report will be published in the Journal of the National Cancer Institute.

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Funding Opportunities Sponsored by EGRP

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Grantsmanship

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NIH Offers $35,000 in Annual Student Loan Repayment

NIH is accepting applications to its five Loan Repayment Programs (LRP) until December 15, 2004. The NIH Loan Repayment Programs can repay up to $35,000 of qualified educational debt for health professionals pursuing careers in clinical, pediatric, contraception and infertility, or health disparities research. They also provide coverage for Federal and state tax liabilities.

Participants must possess a doctoral-level degree, devote 50 percent or more of their time to research funded by a non-profit organization or government entity (Federal, state, or local), and have educational loan debt equal to or exceeding 20 percent of their institutional base salary. U.S. citizens, permanent residents, or U.S. nationals may apply. The five NIH Loan Repayment Programs are the Clinical Research LRP, Clinical Research for Individuals from Disadvantaged Backgrounds LRP, Contraception and Infertility Research LRP, Health Disparities LRP, and Pediatric Research LRP. Learn more about the program and access the online application.

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EGRP Hosts Web Site on NCI Training Opportunities in Cancer Epidemiology

EGRP has a Web site with information about extramural and intramural training opportunities for individuals who are interested in pursuing careers in cancer epidemiology. The site is a gateway to becoming acquainted with opportunities available at various stages of career development - from the young investigator pursuing a doctoral degree to the established investigator. Also use the site to access related resources, such as the NCI publication Everything you wanted to know about the NCI Grants Process…but were afraid to ask.

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EGRP-Supported Research Resources

EGRP invites researchers to take advantage of its research resources:

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Sources of Information:

Last Updated: 27 Oct 2009

Division of Cancer Control and Population Sciences National Cancer Institute Department of Health and Human Services National Institutes of Health USA.gov