2021
Cytokine Levels at Birth in Children Who Developed Acute Lymphoblastic Leukemia
Whitehead TP, Wiemels JL, Zhou M, Kang AY, McCoy LS, Wang R, Fitch B, Petrick LM, Yano Y, Imani P, Rappaport SM, Dahl GV, Kogan SC, Ma X, Metayer C. Cytokine Levels at Birth in Children Who Developed Acute Lymphoblastic Leukemia. Cancer Epidemiology Biomarkers & Prevention 2021, 30: 1526-1535. PMID: 34078642, PMCID: PMC8338848, DOI: 10.1158/1055-9965.epi-20-1704.Peer-Reviewed Original ResearchConceptsAcute lymphoblastic leukemiaCytokine levelsLymphoblastic leukemiaChildhood acute lymphoblastic leukemiaAberrant immune reactionsPrenatal immune developmentRisk of childhoodInterquartile range incrementAltered cytokine levelsCalifornia Childhood Leukemia StudyChildhood Leukemia StudyBirth characteristicsNeonatal levelsPrenatal exposureImmunomodulatory cytokinesImmune developmentHigh hyperdiploidyImmune reactionsCytokinesGM-CSFBlood spotsLogistic regressionLeukemia StudyEndogenous metabolitesConfidence intervals
2018
GWAS in childhood acute lymphoblastic leukemia reveals novel genetic associations at chromosomes 17q12 and 8q24.21
Wiemels JL, Walsh KM, de Smith AJ, Metayer C, Gonseth S, Hansen HM, Francis SS, Ojha J, Smirnov I, Barcellos L, Xiao X, Morimoto L, McKean-Cowdin R, Wang R, Yu H, Hoh J, DeWan AT, Ma X. GWAS in childhood acute lymphoblastic leukemia reveals novel genetic associations at chromosomes 17q12 and 8q24.21. Nature Communications 2018, 9: 286. PMID: 29348612, PMCID: PMC5773513, DOI: 10.1038/s41467-017-02596-9.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentCaliforniaChild, PreschoolChromosomes, Human, Pair 17Chromosomes, Human, Pair 8FemaleGene FrequencyGenetic Predisposition to DiseaseGenome-Wide Association StudyHispanic or LatinoHumansInfantInfant, NewbornMalePolymorphism, Single NucleotidePrecursor Cell Lymphoblastic Leukemia-LymphomaRisk FactorsConceptsNew risk lociRisk lociGenome-wide association studiesGrowth regulation pathwaysGenetic associationAcute lymphoblastic leukemiaNovel genetic associationsChildhood acute lymphoblastic leukemiaGenetic Epidemiology ResearchTranscription factorsStrong genetic associationGene expressionAssociation studiesLymphocyte developmentMYC oncogeneChromosome 17q12Oncology GroupLymphoblastic leukemiaLociChildren's Oncology GroupCalifornia Childhood Leukemia StudyChildhood Leukemia StudyStructural contactsYear of birthNon-Latino whites
2010
Early life exposure to infections and risk of childhood acute lymphoblastic leukemia
Urayama KY, Ma X, Selvin S, Metayer C, Chokkalingam AP, Wiemels JL, Does M, Chang J, Wong A, Trachtenberg E, Buffler PA. Early life exposure to infections and risk of childhood acute lymphoblastic leukemia. International Journal Of Cancer 2010, 128: 1632-1643. PMID: 21280034, PMCID: PMC3165002, DOI: 10.1002/ijc.25752.Peer-Reviewed Original ResearchConceptsNorthern California Childhood Leukemia StudyAcute lymphoblastic leukemiaChildhood acute lymphoblastic leukemiaNon-Hispanic white childrenEarly life exposureDaycare attendanceLymphoblastic leukemiaEar infectionsLife exposureHispanic childrenCommon childhood infectionsAge 6 monthsWhite childrenCalifornia Childhood Leukemia StudyBirth orderChildhood Leukemia StudyChildhood infectionsCommon infectionsProtective roleInfectionSociodemographic differencesLeukemia StudyHispanic populationChildrenRisk
2008
Infection and pediatric acute lymphoblastic leukemia
Ma X, Urayama K, Chang J, Wiemels JL, Buffler PA. Infection and pediatric acute lymphoblastic leukemia. Blood Cells Molecules And Diseases 2008, 42: 117-120. PMID: 19064328, PMCID: PMC2834409, DOI: 10.1016/j.bcmd.2008.10.006.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAge of OnsetCase-Control StudiesChildChild Day Care CentersChild, PreschoolClone CellsCocarcinogenesisEmploymentForecastingHumansInfantInfectionsModels, BiologicalMutationNorth CarolinaParentsPrecursor B-Cell Lymphoblastic Leukemia-LymphomaPrecursor Cell Lymphoblastic Leukemia-LymphomaProspective StudiesRisk FactorsVaccinationConceptsNorthern California Childhood Leukemia StudyVaccination historyPediatric acute lymphoblastic leukemiaAcute lymphoblastic leukemiaCalifornia Childhood Leukemia StudyChild's vaccination historyChildhood Leukemia StudyDaycare attendanceLymphoblastic leukemiaInfectious agentsImmune systemLeukemia StudyChildren's exposureInfectionRecent findingsExposureSocial contactLeukemiaExposure to infections through day-care attendance and risk of childhood leukaemia
Urayama KY, Ma X, Buffler PA. Exposure to infections through day-care attendance and risk of childhood leukaemia. Radiation Protection Dosimetry 2008, 132: 259-266. PMID: 18940822, PMCID: PMC2879097, DOI: 10.1093/rpd/ncn271.Peer-Reviewed Original ResearchConceptsDay care attendanceRisk of childhoodAcute lymphoblastic leukemiaChildhood leukemiaCommon infectionsMore common infectionsNon-Hispanic white childrenNorthern California Childhood Leukemia StudyCommon B-cell precursorDose-response effectPrevious epidemiological studiesCalifornia Childhood Leukemia StudyChildhood Leukemia StudyB cell precursorsDay care settingsSummary measuresLymphoblastic leukemiaEpidemiological studiesNumber of childrenMajority of studiesInfectionLeukemiaLeukemia StudySocial contactRelevant studies
2006
Cytogenetics of Hispanic and White Children with Acute Lymphoblastic Leukemia in California
Aldrich MC, Zhang L, Wiemels JL, Ma X, Loh ML, Metayer C, Selvin S, Feusner J, Smith MT, Buffler PA. Cytogenetics of Hispanic and White Children with Acute Lymphoblastic Leukemia in California. Cancer Epidemiology Biomarkers & Prevention 2006, 15: 578-581. PMID: 16537719, DOI: 10.1158/1055-9965.epi-05-0833.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAge DistributionCaliforniaChildChild, PreschoolCohort StudiesCore Binding Factor Alpha 2 SubunitCytogeneticsFemaleGene Expression Regulation, NeoplasticGenetic MarkersGenetic Predisposition to DiseaseHispanic or LatinoHumansIn Situ Hybridization, FluorescenceIncidenceInfantMaleOncogene Proteins, FusionPloidiesPrecursor Cell Lymphoblastic Leukemia-LymphomaProbabilityProspective StudiesRisk FactorsSensitivity and SpecificitySeverity of Illness IndexSex DistributionSurvival RateWhite PeopleConceptsAcute lymphoblastic leukemia patientsNon-Hispanic whitesLymphoblastic leukemia patientsLeukemia patientsB-lineage acute lymphoblastic leukemia patientsNorthern California Childhood Leukemia StudyPopulation-based studyAcute lymphoblastic leukemiaCalifornia Childhood Leukemia StudyChildhood Leukemia StudyChildhood leukemia patientsEthnic-specific risk factorsTEL-AML1 translocationSitu hybridization findingsTumor genetic characteristicsLymphoblastic leukemiaRisk factorsEpidemiologic studiesHigh hyperdiploidyTEL-AML1Childhood leukemiaCytogenetic profilePatientsMLL rearrangementsLeukemia Study
2005
Cytogenetics of Hispanics and Whites with Childhood Acute Lymphoblastic Leukemia in California.
Aldrich M, Zhang L, Wiemels J, Ma X, Loh M, Selvin S, Feusner J, Smith M, Buffler P. Cytogenetics of Hispanics and Whites with Childhood Acute Lymphoblastic Leukemia in California. Blood 2005, 106: 4536. DOI: 10.1182/blood.v106.11.4536.4536.Peer-Reviewed Original ResearchNon-Hispanic whitesChildhood leukemia patientsRisk factorsLeukemia patientsMLL rearrangementsChildhood acute lymphoblastic leukemiaNorthern California Childhood Leukemia StudyPopulation-based studyAcute lymphoblastic leukemiaCalifornia Childhood Leukemia StudyChildhood Leukemia StudyFirst large studyEthnic-specific risk factorsTEL-AML1 translocationSitu hybridization findingsTumor genetic characteristicsCytogenetic characteristicsHeterogeneity of leukemiaLymphoblastic leukemiaEpidemiologic studiesHigh hyperdiploidyTEL-AML1Childhood leukemiaCytogenetic profileDistinct etiologiesMaternal Pregnancy Loss, Birth Characteristics, and Childhood Leukemia (United States)
Ma X, Metayer C, Does MB, Buffler PA. Maternal Pregnancy Loss, Birth Characteristics, and Childhood Leukemia (United States). Cancer Causes & Control 2005, 16: 1075-1083. PMID: 16184473, DOI: 10.1007/s10552-005-0356-9.Peer-Reviewed Original ResearchMeSH KeywordsAbortion, SpontaneousAdolescentBirth CertificatesBirth IntervalsBirth OrderBirth WeightCaliforniaCase-Control StudiesChildChild, PreschoolFemaleHumansInfantInfant, NewbornLeukemia, Myeloid, AcuteMalePrecursor Cell Lymphoblastic Leukemia-LymphomaPregnancyPregnancy, High-RiskRisk AssessmentRisk FactorsConceptsBirth characteristicsPregnancy lossChildhood leukemiaOdds ratioNorthern California Childhood Leukemia StudyHistory of miscarriageConfidence intervalsRisk of AMLConditional logistic regressionDetailed reproductive historyCalifornia Childhood Leukemia StudyChildhood Leukemia StudyChildhood AMLIncident casesBirth weightMaternal historyIndex childReproductive historyBirth recordsLogistic regressionRecall biasBirth certificatesLeukemia StudyAMLLeukemiaEthnic Difference in Daycare Attendance, Early Infections, and Risk of Childhood Acute Lymphoblastic Leukemia
Ma X, Buffler PA, Wiemels JL, Selvin S, Metayer C, Loh M, Does MB, Wiencke JK. Ethnic Difference in Daycare Attendance, Early Infections, and Risk of Childhood Acute Lymphoblastic Leukemia. Cancer Epidemiology Biomarkers & Prevention 2005, 14: 1928-1934. PMID: 16103439, DOI: 10.1158/1055-9965.epi-05-0115.Peer-Reviewed Original ResearchConceptsNon-Hispanic white childrenAcute lymphoblastic leukemiaChildhood acute lymphoblastic leukemiaDaycare attendanceLymphoblastic leukemiaC-ALLOdds ratioEarly infectionWhite childrenNorthern California Childhood Leukemia StudyPossible etiologic roleRisk of childhoodEthnic differencesCalifornia Childhood Leukemia StudyChildhood Leukemia StudyDose-response relationshipImportant ethnic differencesEar infectionsEtiologic roleInfectious agentsMagnitude of effectInfectionDisease hypothesisLeukemia StudyHispanic childrenVaccination history and risk of childhood leukaemia
Ma X, Does MB, Metayer C, Russo C, Wong A, Buffler PA. Vaccination history and risk of childhood leukaemia. International Journal Of Epidemiology 2005, 34: 1100-1109. PMID: 15951359, DOI: 10.1093/ije/dyi113.Peer-Reviewed Original ResearchConceptsChildhood leukemiaB vaccineHaemophilus influenzae type b vaccineInfluenzae type b vaccineConditional logistic regression analysisBirth certificate controlsType b vaccineHepatitis B vaccineNorthern California Childhood Leukemia StudyCase-control studyRole of vaccinationNumber of dosesType of vaccineRisk of leukemiaPotential confounding factorsLogistic regression analysisCalifornia Childhood Leukemia StudyChildhood Leukemia StudyDetailed exposure assessmentNumber of administrationsHib vaccinationHib vaccineVaccination historyIncident casesMore dosesRAS mutation is associated with hyperdiploidy and parental characteristics in pediatric acute lymphoblastic leukemia
Wiemels JL, Zhang Y, Chang J, Zheng S, Metayer C, Zhang L, Smith MT, Ma X, Selvin S, Buffler PA, Wiencke JK. RAS mutation is associated with hyperdiploidy and parental characteristics in pediatric acute lymphoblastic leukemia. Leukemia 2005, 19: 415-419. PMID: 15674422, DOI: 10.1038/sj.leu.2403641.Peer-Reviewed Original ResearchConceptsRAS mutationsMaternal ageLeukemia casesPediatric acute lymphoblastic leukemiaAcute lymphoblastic leukemia casesDiagnostic bone marrow samplesIncident leukemia casesPaternal preconception smokingNorthern California Childhood Leukemia StudyAcute lymphoblastic leukemiaLymphoblastic leukemia casesBone marrow samplesKRAS codon 12California Childhood Leukemia StudyRAS gene mutationsChildhood Leukemia StudyEtiology of subtypesPreconception smokingCase seriesLymphoblastic leukemiaLeukemia patientsMultivariable modelMarrow samplesHigh hyperdiploidyChildhood leukemia
2004
Maternal Dietary Risk Factors in Childhood Acute Lymphoblastic Leukemia (United States)
Jensen CD, Block G, Buffler P, Ma X, Selvin S, Month S. Maternal Dietary Risk Factors in Childhood Acute Lymphoblastic Leukemia (United States). Cancer Causes & Control 2004, 15: 559-570. PMID: 15280635, DOI: 10.1023/b:caco.0000036161.98734.17.Peer-Reviewed Original ResearchConceptsAcute lymphoblastic leukemiaRisk factorsMaternal dietLymphoblastic leukemiaPopulation-based case-control studyChildhood acute lymphoblastic leukemiaConsumption of provitaminMaternal dietary intakeDietary risk factorsFood frequency questionnaireNorthern California Childhood Leukemia StudyCommon childhood cancerMaternal dietary factorsImportant risk factorCase-control studyCalifornia Childhood Leukemia StudyChildhood Leukemia StudyCounty of residenceConsumption of vegetablesDate of birthFrequency questionnaireDietary factorsChildhood cancerDietary intakeCommon cause
2002
Critical windows of exposure to household pesticides and risk of childhood leukemia.
Ma X, Buffler PA, Gunier RB, Dahl G, Smith MT, Reinier K, Reynolds P. Critical windows of exposure to household pesticides and risk of childhood leukemia. Environmental Health Perspectives 2002, 110: 955-960. PMID: 12204832, PMCID: PMC1240997, DOI: 10.1289/ehp.02110955.Peer-Reviewed Original ResearchConceptsHigh riskChildhood leukemiaNorthern California Childhood Leukemia StudyPotential etiologic roleCalifornia Childhood Leukemia StudyHousehold pesticidesLocation of exposureChildhood Leukemia StudyHousehold pesticide exposureBirth RegistryControl subjectsEtiologic roleElevated riskSignificant associationLeukemiaPregnancyCritical windowLeukemia StudyLate exposureFrequent exposurePesticide exposureRiskExposureYear 2Year 1Daycare attendance and risk of childhood acute lymphoblastic leukaemia
Ma X, Buffler PA, Selvin S, Matthay KK, Wiencke JK, Wiemels JL, Reynolds P. Daycare attendance and risk of childhood acute lymphoblastic leukaemia. British Journal Of Cancer 2002, 86: 1419-1424. PMID: 11986774, PMCID: PMC2375371, DOI: 10.1038/sj.bjc.6600274.Peer-Reviewed Original ResearchConceptsAcute lymphoblastic leukemiaChildhood acute lymphoblastic leukemiaLymphoblastic leukemiaOdds ratioNorthern California Childhood Leukemia StudyPopulation-based controlsCalifornia Childhood Leukemia StudyCase-control pairsChildhood Leukemia StudyDate of birthBirth RegistryDaycare attendanceCommon infectionsIncident casesYounger ageLeukemiaLeukemia StudyMore childrenLonger durationChildrenDaycare settingRiskDaycareMore hoursPreschool attendance