2023
Validation of a targeted metabolomics panel for improved second‐tier newborn screening
Mak J, Peng G, Le A, Gandotra N, Enns G, Scharfe C, Cowan T. Validation of a targeted metabolomics panel for improved second‐tier newborn screening. Journal Of Inherited Metabolic Disease 2023, 46: 194-205. PMID: 36680545, PMCID: PMC10023470, DOI: 10.1002/jimd.12591.Peer-Reviewed Original ResearchConceptsRecommended Uniform Screening PanelMethylmalonic acidemiaNewborn screeningOrnithine transcarbamylase deficiencySecond-tier assayDisease markersGlutaric acidemia type ILong-chain acyl-CoA dehydrogenase deficiencyScreen-positive casesUniform Screening PanelLong-chain acylcarnitinesSecond-tier testingFalse-positive casesSecond-tier testBlood spot samplesAcyl-CoA dehydrogenase deficiencyMetabolomics panelMetabolic disordersTargeted metabolomics analysisPositive casesMetabolite panelNBS programsDehydrogenase deficiencyLiquid chromatography-tandem mass spectrometryScreening panel
2020
Ethnic variability in newborn metabolic screening markers associated with false‐positive outcomes
Peng G, Tang Y, Gandotra N, Enns GM, Cowan TM, Zhao H, Scharfe C. Ethnic variability in newborn metabolic screening markers associated with false‐positive outcomes. Journal Of Inherited Metabolic Disease 2020, 43: 934-943. PMID: 32216101, PMCID: PMC7540352, DOI: 10.1002/jimd.12236.Peer-Reviewed Original ResearchMeSH KeywordsAcyl-CoA Dehydrogenase, Long-ChainAmino Acid Metabolism, Inborn ErrorsBiomarkersBrain Diseases, MetabolicCaliforniaCongenital Bone Marrow Failure SyndromesEthnicityFalse Positive ReactionsFemaleGestational AgeGlutaryl-CoA DehydrogenaseHumansInfant, NewbornLipid Metabolism, Inborn ErrorsMaleMitochondrial DiseasesMuscular DiseasesNeonatal ScreeningOrnithine Carbamoyltransferase Deficiency DiseaseTandem Mass SpectrometryConceptsMetabolic marker levelsOrnithine transcarbamylase deficiencyMethylmalonic acidemiaClinical variablesMarker levelsBlack infantsMetabolic markersBlood metabolic markersDiverse newborn populationGlutaric acidemia type 1False-positive screensLong-chain acyl-CoA dehydrogenase deficiencyEthnicity-related differencesNewborn screening programsFalse-positive casesInborn metabolic disordersAcyl-CoA dehydrogenase deficiencySingleton babiesGestational ageBirth weightScreening programMetabolic disordersNewborn populationInfluence of ethnicityMetabolic screeningReducing False-Positive Results in Newborn Screening Using Machine Learning
Peng G, Tang Y, Cowan TM, Enns GM, Zhao H, Scharfe C. Reducing False-Positive Results in Newborn Screening Using Machine Learning. International Journal Of Neonatal Screening 2020, 6: 16. PMID: 32190768, PMCID: PMC7080200, DOI: 10.3390/ijns6010016.Peer-Reviewed Original ResearchOrnithine transcarbamylase deficiencyMethylmalonic acidemiaNewborn screeningGlutaric acidemia type 1Successful public health programsLong-chain acyl-CoA dehydrogenase deficiencyPublic health programsInborn metabolic disordersAcyl-CoA dehydrogenase deficiencyGestational ageClinical variablesFalse-positive resultsBirth weightMetabolic disordersScreen positivesHealth programsType 1NBS programsDehydrogenase deficiencyDisease markersDisordersPositive resultsScreening
2011
High-quality DNA sequence capture of 524 disease candidate genes
Shen P, Wang W, Krishnakumar S, Palm C, Chi AK, Enns GM, Davis RW, Speed TP, Mindrinos MN, Scharfe C. High-quality DNA sequence capture of 524 disease candidate genes. Proceedings Of The National Academy Of Sciences Of The United States Of America 2011, 108: 6549-6554. PMID: 21467225, PMCID: PMC3080966, DOI: 10.1073/pnas.1018981108.Peer-Reviewed Original ResearchConceptsGenome informationCandidate genomic regionsCopy number differencesHigh GC contentPadlock probesMolecular diagnosticsSingle nucleotide changeExon-level resolutionDisease candidate genesMitochondrial genesGenomic regionsSequence captureOrnithine transcarbamylase deficiencyGC contentOTC geneCandidate genesDNA variantsExon captureGenomic DNANucleotide changesSample processingStructural variantsGenesSequence verificationDNA samples