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Grantee Research Project Results

2011 Progress Report: Center for Integrative Research on Childhood Leukemia and the Environment (CIRCLE)

EPA Grant Number: R834511
Center: Center for Integrative Research on Childhood Leukemia and the Environment - 2015
Center Director: Metayer, Catherine
Title: Center for Integrative Research on Childhood Leukemia and the Environment (CIRCLE)
Investigators: Buffler, Patricia , Rappaport, Stephen M. , Kyle, Amy , Metayer, Catherine , Wiemels, Joe
Current Investigators: Metayer, Catherine
Institution: University of California - Berkeley , University of California - San Francisco
Current Institution: University of California - Berkeley
EPA Project Officer: Hahn, Intaek
Project Period: September 25, 2009 through September 24, 2015
Project Period Covered by this Report: September 25, 2010 through September 24,2011
Project Amount: $3,704,598
RFA: Children's Environmental Health and Disease Prevention Research Centers (with NIEHS) (2009) RFA Text |  Recipients Lists
Research Category: Children's Health , Human Health

Objective:

The proposed new Children’s Environmental Health Center based at the University of California, Berkeley, is designed to examine the effects of in utero and early life exposure to potentially carcinogenic chemicals present in homes (i.e., pesticides, tobacco-related contaminants, polychlorinated biphenyls (PCBs), and polybrominated diphenyl ethers (PBDEs), genetic and epigenetic factors and their interplay in the development of childhood leukemia. The proposed Center, referred to as Center for Interdisciplinary Research on Childhood Leukemia and the Environment (CIRCLE) includes three Research Projects and two Cores.
 
Project 1 (Childhood Leukemia International Consortium Studies) will identify the exposures to the most relevant time periods and childhood leukemia subtypes and identify important genetic polymorphisms that can modify the association between childhood leukemia and parental tobacco smoking or home pesticide exposure by pooling data from 19 studies worldwide.
 
Project 2 (Exposure Assessment for Childhood Leukemia) will assess carcinogen exposures, based upon analysis of house dust and blood specimens, with special interest in tobacco-related contaminants, PCBs, and PBDEs.
 
Project 3 (Prenatal exposures, DNA Methylation, and Childhood Leukemia) will provide a clearer understanding of the association between parental smoking, pesticides, PCBs, PBDEs exposures and DNA methylation patterns in childhood leukemia, using neonatal bloods.
 
Research Translation and Community Outreach Core (RTCO Core), will disseminate findings from each Project to various audiences with common interest in the etiology of childhood leukemia. The RTCO Core will coordinate Community Engagement, assisted by the pediatric Health Specialists.

Progress Summary:

Project 1

Specific Aim 1: Pool data elements collected from 14 CLIC case-control studies in 10 countries.

More than 40 participants attended the 2010 CLIC Annual Meeting held in Boston, October 19-20 (the meeting minutes are available at http://clic.berkeley.edu). The work proposed under the current award was presented at the meeting and well received. Following the meeting, the CLIC Management Group (chaired by P. Buffler, Director of CIRCLE) held regular (monthly and bimonthly conference calls to discuss issues related to data pooling and data directories, progress on proposed pooled analyses, new applications for CLIC individual and study memberships, and organization of the CLIC annual meeting.
 
The procedures for requesting data have been revised by the Data Pooling Core Logistics Group and the next call for Expressions of Interest (EOI) for CLIC PIs to propose pooled analyses is June 1, 2011. The lead roles for pooled analyses in the current award are presented in Table 1. The affiliated institution of Dr. Helen Bailey is the Telethon Institute for Child Health Research in West Perth, Australia. Dr. Bailey will be conducting the pooled analyses at the International Agency for Research on Cancer (IARC) as part of her post-doc position under the supervision of Dr. Joachim Schuz (Head, Section of Environment and Radiation, IARC).
 
The survey to assess quality and completeness of cytogenetic data in CLIC studies is under review by two CLIC molecular biology members (Drs. Zhang and Pombo-de-Oliveira), and will be circulated to all CLIC PIs. Additionally, a survey of available genetic data and biospecimens is underway.
 
Specific Aim 2: Conduct descriptive analyses to assess geographical differences in the frequency of leukemia subtypes defined by age, immunophenotype and cytogenetics, and assess possible sources for geographical differences.
 
No activities were conducted on this aim in Year 2 (Waiting to obtain data).
 
Specific Aim 3: Assess the association between maternal/paternal smoking or home pesticide exposures and childhood leukemia during different time periods (prenatal, during pregnancy, and postnatal) stratified by histologic, immunophenotypic, and cytogenetic subtypes.
 
No activities were conducted on this aim in Year 2 (Waiting to obtain data).
 
Specific Aim 4: Examine the influence of genetic variation on the association between parental smoking or home pesticide exposures and childhood leukemia by histologic, immunophenotypic and cytogenetic subtypes.
 
No activities were conducted on this aim in Year 2 (Waiting to obtain data).
 
Specific Aim 5: Maintain the CLIC website http://clic.berkeley.edu to facilitate communication among CLIC members and outside communities.
 
The CLIC website has been upgraded from a collection of static html pages to a dynamic site, which can be updated by approved users. A “member’s only” section has been created, accessible via a user authentication process, which includes announcements of activities, events and forums, and a document posting and tracking system. Dedicated sections for CLIC Interest Groups, Logistic Groups, and Working Groups have been added where group members can post messages and documents to facilitate communication and exchange of ideas. Approved members have viewing, editing or administrative rights within these groups. These features of the CLIC website are currently under testing and will be opened for CLIC member use [members will be invited to obtain user names] by June 2011. Other features are currently in development.
 
Significance
 
Leukemia is the most common type of childhood cancer. About 2,400 cases of childhood leukemia (ages 0-14 years) are diagnosed annually in the United States. The etiology of childhood leukemia is complex; confirmed clinical and epidemiologic associations explain less than 10 percent of childhood leukemia incidence. Project 1 is the first epidemiologic study to date that proposes to collaborate with a large international group of investigators in order to examine ubiquitous environmental exposures (i.e., tobacco smoking and residential pesticides) that may be causally associated with the most frequent cancer in children. Pooling data from 14 case-control studies presents a unique opportunity to fully investigate the critical periods of exposures to these contaminants and the possible modifying effects of metabolizing genes in the etiology of childhood, and to examine rare and less-studied childhood leukemia types like acute myeloid leukemia and other cytogenetic subgroups.
 
 
Project 2
 
Specific Aim 1: Measure cotinine, polychlorinated biphnyls (PCBs), and polybrominated diphenylethers (PBDEs) in serum samples obtained from 250 childhood leukemia cases at diagnosis. Estimate correlations in analyte levels between serum and house dust samples.
 
No activities were conducted on this aim in Year 2.
 
Specific Aim 2: Investigate effects of time and seasonality on house dust levels of PBDEs.
a)    Measure levels of PBDEs in the 500 household-dust samples (original and repeat dust samples from each of 250 households. Repeat dust sampling and measurements of nicotine, PAHs, and PCBs will be conducted under NIEHS grant 1R01-ES015899-01A2).
b)    Use mixed-effects models of levels of PBDEs in house dust to evaluate trends, seasonality, and within-household variability.
 
During Year 2, we made progress on Aims 2a and 2b. Repeat dust samples have been collected in 204 households (leading a total of 408 original and repeat samples available for proposed analyses). Using the analytical method developed in Year 1, we extracted PBDEs from 357 residential-dust samples and purified the extracts with silica gel and gel permeation chromatography in preparation for mass spectrometry. We have thus far measured 22 PBDE congeners in 143 (out of a total of 357) residential-dust samples via gas chromatography-high resolution mass spectrometry. We also developed mixed models for statistical analysis of PBDE levels in house dust and applied them to a training set obtained from another investigation of residential dust in Fresno, CA.
 
Specific Aim 3: Develop and apply methods for detecting and profiling human serum albumin (HAS) adducts in samples of dried blood spots (DBS) and serum.
 
a)    Develop methods for measuring HSA adducts in DBS.
b)    Measure profiles of HSA adducts in DBS from leukemia cases and matched controls. Compare profiles between childhood leukemia cases and controls.
c)    Measure profiles of HSA adducts in serum from leukemia cases at diagnosis. Compare profiles of HSA adducts from leukemia cases measured in DBS and serum.
 
Specific Aim 4. Identify HSA adducts observed in profiles, paying particular attention to adducts associated with leukemia status and changes from birth to diagnosis.
 
Specific Aim 5. Develop and apply quantitative assays for HSA adducts identified in Aim 4.
 
a)    Develop assays for isotope-dilution mass spectrometry of identified adducts.
b)    Investigate the stability of these adducts in DBS from control children of smoking and nonsmoking mothers.
c)    Quantify levels of these adducts in archived profiling samples from Aim 3 and investigate possible associations with self-reported parental smoking and house dust levels of nicotine, polycyclic aromatic hydrocarbons (PAHs), PCBs, and PBDEs.
 
During Year 2, we made progress on Aims 3a, 4, and 5a. With the goal of optimizing the DBS sample preparation prior to profiling HSA adducts, we developed a pressure-cycling method which combined DBS protein extraction and trypsin digestion in one step lasting only 30 min. This resulted in comparable results to those obtained with our conventional method applied to HSA from serum, which requires overnight protein extraction followed by 6 hours of trypsin digestion. After extraction and digestion of 3 mm punches from DBS, samples were purified by off-line high-performance liquid chromatography (HPLC) and the (T3) fraction containing HSA-Cys34 adducts was collected using a reverse phase C8 column. The gradient was chosen to minimize the volume of the collected fraction and thereby to maximize the concentrations of adducts in the sample. Then, liquid chromatography-selected reaction monitoring (LC-SRM) experiments were performed on the HPLC samples to detect T3-quinone adducts of selected quinones that were anticipated to be present in DBS samples. By comparing the selected reaction monitoring (SRM) extracted ion chromatograms from DBS digests with those of synthetic T3-quinone standards, the following putative identifications were assigned to analytes in the DBS samples: diol and oxidized forms of benzoquinone, naphthoquinone and phenanthrene quinone.
 
Significance
 
Leukemia is the most common type of childhood cancer. About 2,400 cases of childhood leukemia (ages 0-14 years) are diagnosed annually in the United States. The etiology of childhood leukemia is complex; confirmed clinical and epidemiologic associations explain less than 10 percent of childhood leukemia incidence. The results of this study are providing extremely important information regarding the contribution of various environmental, infectious, immune, and genetic factors to the risk of childhood leukemia. This Center proposes to conduct multi- and inter-disciplinary research to examine the interplay of environmental, genetic and epigenetic factors of childhood leukemia, with a focus on children’s exposure to common chemicals with strong biologic plausibility (i.e., benzene, cotinine, PAHs, PCBs, and PBDEs). Work in year 2 tentatively identified several quinone adducts of benzene and PAHs (benzoquinone, naphthoquinone, and phenanthrene quinone) in DBS.
 
PBDEs are the most common brominated flame retardants in the United States; they are persistent and ubiquitous environmental contaminants. The U.S. National Toxicology Program showed that high doses of one PBDE mixture were carcinogenic in rodents. Human studies have found a suggestive relationship between another PBDE mixture in adipose tissue and the risk of non-Hodgkin’s lymphoma. Contact with house dust is thought to account for 80-90 oercent of the total PBDE exposure, in large part because PBDEs originate entirely from indoor consumer products. California residents may be at particular risk to the effects of PBDEs due to the State’s flammability standards that motivated increased use of PBDEs in furniture sold in California. This project will improve chemical exposure assessment using direct measures of chemicals in home dust samples and biomarkers.
 
 
Project 3
 
Aim 1: Characterize the DNA methylation pattern of normal B-cell differentiation as compared to their leukemic cell counterparts.
 
We have continued our research activities on characterizing the normal pattern of DNA methylation during B-cell differentiation. This activity is dependent upon two key activities: obtaining high quality primary normal bone marrow, and high quality cell sorting procedures for fine sorting of pre-B cell populations. In our progress report from last year, we identified sources for the normal B-cell populations and have performed pilot experiments to sort these populations. Bone marrow is obtained from fetal sources, from children who have recovered from leukemia (who are relatively age-matched to our population of interest), and young adults. We are therefore able to assess DNA methylation patterns in ontological stages and calendar ages. An example of our cell sorting was demonstrated in Figure 1 from last year’s progress report, and a number of genes that were identified as being de-methylated and methylated are shown in Figure 1 in this year’s report. The presence of CD19 as one of the loci which lost methylation is a testament to the success of this experiment. This involves the use of the Illumina 27,000 CpG site array, but our larger experiments currently under way using the Illumina 486,000 CpG site array which will provide much more detailed and extensive data than we originally proposed.
 
We have now carefully assessed and chosen 253 case and 260 control samples with the most extensive data available regarding smoking, pesticides, and other exposure information with which to complete the aims of this proposal. These DNAs and their matched Guthrie cards will be analyzed during 2011 using year 2 funds and year 1 carry-forward funds. This DNA will be bisulfite-treated and processed by the UCSF Center for Human Genetics Core using the 486,000 CpG site array and analyzed in the mid to latter half of this year.
 
Aim 2: Characterize DNA methylation pattern in 250 neonatal DBS cards from leukemia cases (derived from the same case samples as Aim 1) and 250 controls.
 
The laboratory component of this aim is currently under way.
 
Aim 3: Replicate and extend the findings of Aim 1 by characterizing DNA methylation in a set of disease- and exposure-relevant meta-stable CpG sites in DBS cards from select groups of DBS cards from California leukemia cases and controls.
 
No activities scheduled in Years 2 and 3. We have, however, completed and approved IRB protocols for this work at UC Berkeley and UCSF. We are currently submitting our IRB for approval at the State of California level.
 
 
Research Translation and Community Outreach Core (RTCO Core) 
 
Specific Aim 1: Develop a narrative that communicates the key questions, findings, and trajectory of future research to find the causes and cures for leukemia in children, to be used as the basis for the research translation and community outreach program.
 
Significant progress was made toward the development of substantive elements of this narrative. In addition to the elements about the trajectory of the research process itself, six themes that have been identified are: findings regarding the presence of children in child care settings and possible role of infectious agents; impact of diagnostic x-rays; effects of exposure to chemicals, including second and third hand smoke, during pre-conception and pre-natal periods; significance of home environments and dust as reservoirs for environmental agents; persistence of chemicals in homes; and significance of epigenetic mechanisms. With regard to engagement of the communications consultant, consultation among members of the CIRCLE team resolved outstanding questions during the internal advisory committee meeting in April. We have identified a greater role for social media than originally expected. The substantive scope of work is completed, and the contract will be put in place during Year 2.
 
Specific Aim 2. Engage with two non-governmental organizations that serve parents, health/child care professionals, community leaders, policy leaders, and other advocates interested in children’s environmental health to develop relevant messages and materials about childhood leukemia and opportunities and challenges of research in this field and to convey and distribute this information to key audiences.
 
Core A put in place subawards for the Children’s Environmental Health Network (CEHN) and the Pediatric Environmental Health Specialty Unit (PEHSU) at UCSF. CEHN and the UCSF PEHSU completed initial review of capacities and resources. Potential avenues identified by CEHN far exceed those anticipated. CEHN's Eco-Healthy Child Care Program (ECCP) and Advisory Committee are important assets for communications. Opportunities include American Public Health Association and key sections, members the National Association of City and County Health Officials, members of the Association of State and Territorial Health Officials, professional associations, youth/parent organizations, and faith-based organizations. CEHN is prepared to include key findings in presentations to upcoming conferences, workshops, and trainings. Factsheets were drafted for health care professionals and for the general public and will undergo review. A new web page with links to key resources was created. New elements were created for ECCP materials. The PEHSU has identified opportunities to present information to clinical audiences in collaboration with the pediatric oncology expert. Professor Kyle has been asked by the Office of Children’s Health Protection at U.S. EPA to lead a work group of the Children’s Health Protection Advisory Committee to discuss the significance of findings regarding the prenatal period for policies and actions of the agency. This has a wider scope than the work under CIRCLE but is in the spirit of making scientific findings accessible to policy audiences. The group provided recommendations on screening of chemicals to address children’s environmental health including pre-natal and pre-conception exposures in March.
 
Specific Aim 3. Reach out to targeted earned media outlets that report in depth on health, environmental or environmental health topics to generate interest in covering the trajectory of results from research on causes of childhood leukemia, and the promise of future research.
 
No activity was planned for Year 1 or 2.
 
Specific Aim 4. Develop relationships with voluntary organizations, such as the Leukemia and Lymphoma Society, that serve those who have cancer and their families and allies, to increase their awareness of, and possible interest in, research on causes of cancer. Provide resources of value for one or more of these organizations.
 
This was originally scheduled for Year 1 and but will likely occur in Years 3 and 4.
 
Specific Aim 5. Develop and convey briefings and updates about advances in knowledge and potential future benefits of research on childhood leukemia to state and national policy and stakeholder audiences, including the California Department of Public Health and the California Environmental Protection Agency, using web-based communication strategies as well as directly targeted communications.
 
Briefings are now anticipated for Year 3 and Year 5. Professor Kyle conducted several activities with participants in the California Green Chemistry program related to addressing children’s health concerns including, but not limited to, leukemia in chemicals polices including those for testing and assessment of chemicals. She has submitted an abstract for the 2011 meeting of the International Society for Environmental Epidemiology to present some of these findings. The PEHSU has also identified opportunities to engage with California state environmental health regulators to create a forum on advances in children’s environmental health, and we are scoping possibilities for such an event to be held in Year 3. The recent ban on travel by state employees in California could prove to be an obstacle and is being assessed.
 
Specific Aim 6. Work with other children’s environmental health research centers to seek opportunities for combined efforts to enhance outreach and research translation for the program as a whole.
 
We have made significant progress. We have met with counterparts at other Berkeley centers (Eskenazi and Tager, PIs) and the center at the University of Washington (Faustman, PI). All four have an interest in working to increase the depth of the synthesis of research findings, to create more consistent messaging across the centers, and to reinforce understanding of the field as a whole. We are investigating methods for synthesis of scientific findings at a thematic level to integrate interpretation and significance of findings from different lines of research. One example of such an approach, at a much larger scale, is the report of the intergovernmental panel on climate change. Possible unifying themes might be a type of environment for children, such as the home environment, or to a kind of contaminant, such as pesticides. We conducted a session during the fall 2010 meeting of the centers on ways to engage policy audiences.
 
Significance
 
Research translation and outreach can amplify the public benefits of the investment in research by making the results accessible to key audiences that can support both policy and behavioral changes. The health relevance comes from making both immediate results and broader understanding of results achieved through sustained research available to those who can act upon this knowledge for the public good. Our progress this year illustrates the potential in using a networked model of research translation and outreach to reach a more diverse audience using existing channels rather than to try to create such channels de novo.

Future Activities:

Project 1

Specific Aim 1: Continue data pooling. Complete inventory of cytogenetic data. Continue development of meta-database. Organize the 2011 CLIC meeting in Barcelona (September 16-18) in conjunction with the conferences of the International Society for Environmental Epidemiology (ISEE) and the International Childhood Cancer Cohort Consortium (I4C).

Specific Aim 2: Start statistical analyses.
 
Specific Aim 3: Start statistical analyses.
 
Specific Aim 4: Assess availability of genetic data for pooled analyses
 
Specific Aim 5: Continue website maintenance. Incorporate meta-dabase to allow Web-based inventory of questionnaire and biospecimen data.
 
 
Project 2
 
Specific Aim 1: Adapt and validate methods to measure cotinine, PCBs, and PBDEs in serum samples. Identify samples from 250 childhood leukemia subjects for analysis.
 
Specific Aim 2: Continue to analyze PBDEs in archived and repeated dust samples.
 
Specific Aim 3: Optimize methods for profiling HSA adducts from DBS samples. Profile HSA adducts in 3 mm punches from DBS from control children divided equally between smoking and non-smoking mothers during pregnancy.
 
Specific Aim 4: Continue with identification of adducts detected in DBS samples.
 
Specific Aim 5: Continue with quantification of putative adducts in DBS samples from control children of smoking and nonsmoking mothers.
 
 
Project 3
 
Specific Aim 1: We will complete the isolation of DNA and perform Illumina Infinium DNA methylation screens on 250 diagnostic bone marrow mononuclear cell preparations. We will complete the same Infinium panel on several stages of B-cell precursor populations among 8 fetal B-cell preparations, to establish the DNA methylation pattern of B cell development. In addition, we will perform gene expression arrays on the fetal bone marrows to detect which gene methylation changes are associated with functional changes in expression.
 
Specific Aim 2: We will complete the processing of 250 case and 250 matched control Guthrie cards for DNA methylation assessments by the Illumina Infinium method.
 
Specific Aim 3: We will commence the collection of Guthrie cards for this Aim by completing the IRB process first. Biological assays will be performed in future years.
 
 
Research Translation and Community Outreach Core (RTCO Core)
 
Specific Aim 1: We will focus on tools to convey narrative including a web presence. We are adding to a component for social media and web 2.0. We will investigate opportunities through the YouTube channel at UC Berkeley for content where we can provide definitive expertise.
 
Specific Aim 2: UCB, CEHN, and PEHSU investigators will roll out relevant messages and materials. CEHN is planning a research conference in the spring of 2012, and we plan to contribute as requested. CEHN will incorporate content into webinars for the EHCC community, health care professionals, and public health/child health advocates, address leukemia in its widely distributed “Article of the Month” series, and update content for websites, factsheets, listservs, and pages on Twitter and Facebook.
 
Specific Aim 3: Activity will occur in Year 3.
 
Specific Aim 4: We plan to complete assessments needed to identify the most appropriate partners from among these organizations in light of our capacity to respond to anticipated questions. CEHN plans to prepare staff to be ready for potential inquiries.
 
Specific Aim 5: We plan to schedule briefings in Year 3 unless current events dictate otherwise. CEHN will assist with organizing the policy briefing in Washington and assist with related outreach.
 
Specific Aim 6: We are looking for an opportunity for an initial meeting at low cost. We plan to select one target for higher level synthesis and discussion of research findings, for development of a pilot product and completion of prototypes for communication.

 


Journal Articles: 13 Displayed | Download in RIS Format

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Other center views: All 52 publications 13 publications in selected types All 13 journal articles
Publications
Type Citation Sub Project Document Sources
Journal Article Bailey HD, Fritschi L, Infante-Rivard C, Glass DC, Miligi L, Dockerty JD, Lightfoot T, Clavel J, Roman E, Spector LG, Kaatsch P, Metayer C, Magnani C, Milne E, Polychronopoulou S, Simpson J, Rudant J, Sidi V, Rondelli R, Orsi L, Kang AY, Petridou E, Schuz J. Parental occupational pesticide exposure and the risk of childhood leukemia in the offspring: findings from the Childhood Leukemia International Consortium. International Journal of Cancer 2014;135(9):2157-2172. R834511 (2014)
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  • Journal Article de Smith AJ, Walsh KM, Ladner MB, Zhang S, Xiao C, Cohen F, Moore TB, Chokkalingam AP, Metayer C, Buffler PA, Trachtenberg EA, Wiemels JL. The role of KIR genes and their cognate HLA class I ligands in childhood acute lymphoblastic leukemia. Blood 2014;123(16):2497-2503. R834511 (2013)
    R834511 (Final)
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  • Journal Article Gonseth S, Roy R, Houseman EA, de Smith AJ, Zhou M, Lee ST, Nussle S, Singer AW, Wrensch MR, Metayer C, Wiemels JL. Periconceptional folate consumption is associated with neonatal DNA methylation modifications in neural crest regulatory and cancer development genes. Epigenetics 2015;10(12):1166-1176. R834511 (2014)
    R836159 (2017)
    R836159 (2018)
    R836159 (2019)
    R836159C003 (2016)
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  • Journal Article Lee S-T, Xiao Y, Muench MO, Xiao J, Fomin ME, Wiencke JK, Zheng S, Dou X, de Smith A, Chokkalingam A, Buffler P, Ma X, Wiemels JL. A global DNA methylation and gene expression analysis of early human B-cell development reveals a demethylation signature and transcription factor network. Nucleic Acids Research 2012;40(22):11339-11351. R834511 (2012)
    R834511 (2013)
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  • Journal Article Lee S-T, Muench MO, Fomin ME, Xiao J, Zhou M, de Smith A, Martin-Subero JI, Heath S, Houseman EA, Roy R, Wrensch M, Wiencke J, Metayer C, Wiemels JL. Epigenetic remodeling in B-cell acute lymphoblastic leukemia occurs in two tracks and employs embryonic stem cell-like signatures. Nucleic Acids Research 2015;43(5):2590-2602. R834511 (2014)
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  • Journal Article Metayer C, Milne E, Dockerty JD, Clavel J, Pombo-de-Oliveira MS, Wesseling C, Spector LG, Schuz J, Petridou E, Ezzat S, Armstrong BK, Rudant J, Koifman S, Kaatsch P, Moschovi M, Rashed WM, Selvin S, McCauley K, Hung RJ, Kang AY, Infante-Rivard C. Maternal supplementation with folic acid and other vitamins before and during pregnancy and risk of leukemia in the offspring: a Childhood Leukemia International Consortium (CLIC) study. Epidemiology 2014;25(6):811-822. R834511 (2013)
    R834511 (2014)
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  • Journal Article Milne E, Greenop KR, Metayer C, Schuz J, Pertridou E, Pombo-de-Oliveira MS, Infante-Rivard C, Roman E, Dockerty JD, Spector LG, Koifman S, Orsi L, Rudant J, Dessypris N, Simpson J, Lightfoot T, Kaatsch P, Baka M, Faro A, Armstrong BK, Clavel J, Buffler PA. Fetal growth and childhood acute lymphoblastic leukemia: findings from the Childhood Leukemia International Consortium (CLIC). International Journal of Cancer 2013;133(12):2968-2979. R834511 (2013)
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  • Journal Article Whitehead TP, Brown FR, Metayer C, Park J-S, Does M, Petreas MX, Buffler PA, Rappaport SM. Polybrominated diphenyl ethers in residential dust: sources of variability. Environment International 2013;57-58:11-24. R834511 (2013)
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  • Journal Article Whitehead TP, Crispo Smith S, Park JS, Petreas MX, Rappaport SM, Metayer C. Concentrations of persistent organic pollutants in California children’s whole blood and residential dust. Environmental Science & Technology 2015;49(15):9331-9340. R834511 (2014)
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  • Journal Article Xiao J, Lee S-T, Xiao Y, Ma X, Houseman EA, Hsu L-I, Roy R, Wrensch M, de Smith AJ, Chokkalingam A, Buffler P, Wiencke JK, Wiemels JL. PTPRG inhibition by DNA methylation and cooperation with RAS gene activation in childhood acute lymphoblastic leukemia. International Journal of Cancer 2014;135(5):1101-1109. R834511 (2014)
    R834511 (Final)
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  • Journal Article Li H, Grigoryan H, Funk WE, Lu SS, Rose S, Williams ER, Rappaport SM. Profiling Cys34 adducts of human serum albumin by fixed-step selected reaction monitoring. Molecular & Cellular Proteomics 2011;10(3):M110.004606 (13 pp.). R834511 (2013)
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  • Journal Article Metayer C, Milne E, Clavel J, Infante-Rivard C, Petridou E, Taylor M, Schuz J, Spector LG, Dockerty JD, Magnani C, Pombo-de-Oliveira MS, Sinnett D, Murphy M, Roman E, Monge P, Ezzat S, Mueller BA, Scheurer ME, Armstrong BK, Birch J, Kaatsch P, Koifman S, Lightfoot T, Bhatti P, Bondy ML, Rudant J, O'Neill K, Miligi L, Dessypris N, Kang AY, Buffler PA. The Childhood Leukemia International Consortium. Cancer Epidemiology 2013;37(3):336-347. R834511 (2013)
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  • Journal Article Zhang L, Samad A, Pombo-de-Oliveira MS, Scelo G, Smith MT, Feusner J, Wiemels JL, Metayer C. Global characteristics of childhood acute promyelocytic leukemia. Blood Reviews 2015;29(2):101-125. R834511 (2014)
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  • Supplemental Keywords:

    Carcinogenic chemicals, pesticides, tobacco-related contaminants, polychlorinated biphenyls, PCBs, polybrominated diphenyl ethers, PBDEs, leukemia, childhood leukemia

    Progress and Final Reports:

    Original Abstract
  • 2010 Progress Report
  • 2012 Progress Report
  • 2013 Progress Report
  • 2014 Progress Report
  • Final Report
  • Subprojects under this Center: (EPA does not fund or establish subprojects; EPA awards and manages the overall grant for this center).
    R834511C001 Childhood Leukemia International Consortium Studies
    R834511C002 Exposure Assessment for Childhood Leukemia
    R834511C003 Prenatal Exposures, DNA Methylation & Childhood Leukemia

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    The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.

    Project Research Results

    • Final Report
    • 2014 Progress Report
    • 2013 Progress Report
    • 2012 Progress Report
    • 2010 Progress Report
    • Original Abstract
    52 publications for this center
    13 journal articles for this center

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    Last updated April 28, 2023
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