PMID- 24610234 OWN - NLM STAT- MEDLINE DCOM- 20150212 LR - 20220310 IS - 1552-9924 (Electronic) IS - 0091-6765 (Print) IS - 0091-6765 (Linking) VI - 122 IP - 6 DP - 2014 Jun TI - The human early-life exposome (HELIX): project rationale and design. PG - 535-44 LID - 10.1289/ehp.1307204 [doi] AB - BACKGROUND: Developmental periods in early life may be particularly vulnerable to impacts of environmental exposures. Human research on this topic has generally focused on single exposure-health effect relationships. The "exposome" concept encompasses the totality of exposures from conception onward, complementing the genome. OBJECTIVES: The Human Early-Life Exposome (HELIX) project is a new collaborative research project that aims to implement novel exposure assessment and biomarker methods to characterize early-life exposure to multiple environmental factors and associate these with omics biomarkers and child health outcomes, thus characterizing the "early-life exposome." Here we describe the general design of the project. METHODS: In six existing birth cohort studies in Europe, HELIX will estimate prenatal and postnatal exposure to a broad range of chemical and physical exposures. Exposure models will be developed for the full cohorts totaling 32,000 mother-child pairs, and biomarkers will be measured in a subset of 1,200 mother-child pairs. Nested repeat-sampling panel studies (n = 150) will collect data on biomarker variability, use smartphones to assess mobility and physical activity, and perform personal exposure monitoring. Omics techniques will determine molecular profiles (metabolome, proteome, transcriptome, epigenome) associated with exposures. Statistical methods for multiple exposures will provide exposure-response estimates for fetal and child growth, obesity, neurodevelopment, and respiratory outcomes. A health impact assessment exercise will evaluate risks and benefits of combined exposures. CONCLUSIONS: HELIX is one of the first attempts to describe the early-life exposome of European populations and unravel its relation to omics markers and health in childhood. As proof of concept, it will form an important first step toward the life-course exposome. FAU - Vrijheid, Martine AU - Vrijheid M AD - Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain. FAU - Slama, Remy AU - Slama R FAU - Robinson, Oliver AU - Robinson O FAU - Chatzi, Leda AU - Chatzi L FAU - Coen, Muireann AU - Coen M FAU - van den Hazel, Peter AU - van den Hazel P FAU - Thomsen, Cathrine AU - Thomsen C FAU - Wright, John AU - Wright J FAU - Athersuch, Toby J AU - Athersuch TJ FAU - Avellana, Narcis AU - Avellana N FAU - Basagana, Xavier AU - Basagana X FAU - Brochot, Celine AU - Brochot C FAU - Bucchini, Luca AU - Bucchini L FAU - Bustamante, Mariona AU - Bustamante M FAU - Carracedo, Angel AU - Carracedo A FAU - Casas, Maribel AU - Casas M FAU - Estivill, Xavier AU - Estivill X FAU - Fairley, Lesley AU - Fairley L FAU - van Gent, Diana AU - van Gent D FAU - Gonzalez, Juan R AU - Gonzalez JR FAU - Granum, Berit AU - Granum B FAU - Grazuleviciene, Regina AU - Grazuleviciene R FAU - Gutzkow, Kristine B AU - Gutzkow KB FAU - Julvez, Jordi AU - Julvez J FAU - Keun, Hector C AU - Keun HC FAU - Kogevinas, Manolis AU - Kogevinas M FAU - McEachan, Rosemary R C AU - McEachan RR FAU - Meltzer, Helle Margrete AU - Meltzer HM FAU - Sabido, Eduard AU - Sabido E FAU - Schwarze, Per E AU - Schwarze PE FAU - Siroux, Valerie AU - Siroux V FAU - Sunyer, Jordi AU - Sunyer J FAU - Want, Elizabeth J AU - Want EJ FAU - Zeman, Florence AU - Zeman F FAU - Nieuwenhuijsen, Mark J AU - Nieuwenhuijsen MJ LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140307 PL - United States TA - Environ Health Perspect JT - Environmental health perspectives JID - 0330411 RN - 0 (Biomarkers) RN - 0 (Proteome) SB - IM CIN - Environ Health Perspect. 2014 Jun;122(6):A169. PMID: 24892972 MH - Biomarkers MH - Child MH - Child Development MH - Child, Preschool MH - Cohort Studies MH - Environmental Exposure/*adverse effects/*analysis/statistics & numerical data MH - Epigenomics MH - Europe MH - Female MH - Fetal Development MH - Humans MH - Infant MH - Infant, Newborn MH - Male MH - Maternal Exposure/adverse effects/statistics & numerical data MH - Metabolome MH - Obesity MH - Pregnancy MH - Proteome MH - Transcriptome PMC - PMC4048258 COIS- N.A. is employed by Sensing & Control Systems SL, Igualada, Spain. L.B. is employed by Hylobates Consulting S.R.L., Rome, Italy. The authors declare they have no actual or potential competing financial interests. EDAT- 2014/03/13 06:00 MHDA- 2015/02/13 06:00 PMCR- 2014/06/01 CRDT- 2014/03/11 06:00 PHST- 2013/06/11 00:00 [received] PHST- 2014/03/06 00:00 [accepted] PHST- 2014/03/11 06:00 [entrez] PHST- 2014/03/13 06:00 [pubmed] PHST- 2015/02/13 06:00 [medline] PHST- 2014/06/01 00:00 [pmc-release] AID - ehp.1307204 [pii] AID - 10.1289/ehp.1307204 [doi] PST - ppublish SO - Environ Health Perspect. 2014 Jun;122(6):535-44. doi: 10.1289/ehp.1307204. Epub 2014 Mar 7.