2020
METAP1 mutation is a novel candidate for autosomal recessive intellectual disability
Caglayan AO, Aktar F, Bilguvar K, Baranoski JF, Akgumus GT, Harmanci AS, Erson-Omay EZ, Yasuno K, Caksen H, Gunel M. METAP1 mutation is a novel candidate for autosomal recessive intellectual disability. Journal Of Human Genetics 2020, 66: 215-218. PMID: 32764695, PMCID: PMC7785574, DOI: 10.1038/s10038-020-0820-0.Peer-Reviewed Original ResearchConceptsEssential proteinsAutosomal recessive intellectual disabilityRecessive intellectual disabilityMethionine aminopeptidase 1Genomic analysisHomozygous nonsense mutationFunction mutationsNovel homozygous nonsense mutationNonsense mutationAminopeptidase 1Novel candidatesNeuronal functionMutationsMolecular pathogenesisProteinIntellectual disabilityGenome testingEukaryotesNovel etiologyMetAP1GenesNeurologic impairmentCommon diseasePathwayCells
2018
Loss of Protocadherin‐12 Leads to Diencephalic‐Mesencephalic Junction Dysplasia Syndrome
Guemez‐Gamboa A, Çağlayan AO, Stanley V, Gregor A, Zaki M, Saleem SN, Musaev D, McEvoy‐Venneri J, Belandres D, Akizu N, Silhavy JL, Schroth J, Rosti RO, Copeland B, Lewis SM, Fang R, Issa MY, Per H, Gumus H, Bayram AK, Kumandas S, Akgumus GT, Erson‐Omay E, Yasuno K, Bilguvar K, Heimer G, Pillar N, Shomron N, Weissglas‐Volkov D, Porat Y, Einhorn Y, Gabriel S, Ben‐Zeev B, Gunel M, Gleeson JG. Loss of Protocadherin‐12 Leads to Diencephalic‐Mesencephalic Junction Dysplasia Syndrome. Annals Of Neurology 2018, 84: 638-647. PMID: 30178464, PMCID: PMC6510237, DOI: 10.1002/ana.25327.Peer-Reviewed Original ResearchConceptsBrainstem malformationDysplasia syndromeEndothelial cellsBiallelic mutationsAutosomal recessive malformationSuch pathogenic variantsCharacteristic clinical presentationPatient-derived induced pluripotent stem cellsWhite matter tractsAnn NeurolAppendicular spasticityBrain calcificationClinical presentationPoor outcomeAxial hypotoniaPsychomotor disabilityProgressive microcephalyTract defectsPathogenic variantsPhenotypic spectrumPatientsCraniofacial dysmorphismBrain imagingNeural precursorsProtein expressionGenotype–phenotype investigation of 35 patients from 11 unrelated families with camptodactyly–arthropathy–coxa vara–pericarditis (CACP) syndrome
Yilmaz S, Alkaya D, Kasapçopur Ö, Barut K, Akdemir ES, Celen C, Youngblood MW, Yasuno K, Bilguvar K, Günel M, Tüysüz B. Genotype–phenotype investigation of 35 patients from 11 unrelated families with camptodactyly–arthropathy–coxa vara–pericarditis (CACP) syndrome. Molecular Genetics & Genomic Medicine 2018, 6: 230-248. PMID: 29397575, PMCID: PMC5902402, DOI: 10.1002/mgg3.364.Peer-Reviewed Original ResearchConceptsCoxa vara-pericarditis (CACP) syndromeCoxa varaCommon childhood rheumatic diseaseIncreased pain levelSevere hip involvementChildhood rheumatic diseasesJuvenile idiopathic arthritisDevelopmental coxa varaRare autosomal recessive conditionYears of ageUnrelated familiesWhole-exome sequencingAutosomal recessive conditionHip involvementIdiopathic arthritisMost patientsPain levelsRadiological findingsPleural effusionJoint involvementNoninflammatory arthropathyRheumatic diseasesNovel genomic alterationsFirst symptomsCACP syndrome
2016
Biallelic Mutations in Citron Kinase Link Mitotic Cytokinesis to Human Primary Microcephaly
Li H, Bielas SL, Zaki MS, Ismail S, Farfara D, Um K, Rosti RO, Scott EC, Tu S, C. NC, Gabriel S, Erson-Omay EZ, Ercan-Sencicek AG, Yasuno K, Çağlayan AO, Kaymakçalan H, Ekici B, Bilguvar K, Gunel M, Gleeson JG. Biallelic Mutations in Citron Kinase Link Mitotic Cytokinesis to Human Primary Microcephaly. American Journal Of Human Genetics 2016, 99: 501-510. PMID: 27453578, PMCID: PMC4974110, DOI: 10.1016/j.ajhg.2016.07.004.Peer-Reviewed Original ResearchConceptsInduced pluripotent stem cellsPrimary microcephalyHuman primary microcephalyAutosomal recessive primary microcephalyNon-progressive intellectual disabilityAmino acid residuesPluripotent stem cellsMitotic cytokinesisCellular functionsGenome editingCell divisionKinase domainAbnormal cytokinesisCRISPR/Homozygous missense mutationCytokinesisKinase activityMultipolar spindlesNeural progenitorsAcid residuesFunction mutationsMissense mutationsStem cellsMultiple rolesMutations
2015
Somatic POLE mutations cause an ultramutated giant cell high-grade glioma subtype with better prognosis
Erson-Omay EZ, Çağlayan AO, Schultz N, Weinhold N, Omay SB, Özduman K, Köksal Y, Li J, Serin Harmancı A, Clark V, Carrión-Grant G, Baranoski J, Çağlar C, Barak T, Coşkun S, Baran B, Köse D, Sun J, Bakırcıoğlu M, Moliterno Günel J, Pamir MN, Mishra-Gorur K, Bilguvar K, Yasuno K, Vortmeyer A, Huttner AJ, Sander C, Günel M. Somatic POLE mutations cause an ultramutated giant cell high-grade glioma subtype with better prognosis. Neuro-Oncology 2015, 17: 1356-1364. PMID: 25740784, PMCID: PMC4578578, DOI: 10.1093/neuonc/nov027.Peer-Reviewed Original ResearchConceptsHigh-grade gliomasSomatic POLE mutationsPOLE mutationsMalignant high-grade gliomasLonger progression-free survivalProgression-free survivalSomatic mutationsOverall survivalPediatric patientsBetter prognosisClinical featuresImproved prognosisClinical behaviorImmune cellsBizarre cellsAggressive formGlioblastoma multiformeDisease pathophysiologyMolecular subgroupsHomozygous germline mutationGermline mutationsPrognosisGlioma subtypesComprehensive genomic analysisDistinct subgroups
2014
NGLY1 mutation causes neuromotor impairment, intellectual disability, and neuropathy
Caglayan AO, Comu S, Baranoski JF, Parman Y, Kaymakçalan H, Akgumus GT, Caglar C, Dolen D, Erson-Omay EZ, Harmanci AS, Mishra-Gorur K, Freeze HH, Yasuno K, Bilguvar K, Gunel M. NGLY1 mutation causes neuromotor impairment, intellectual disability, and neuropathy. European Journal Of Medical Genetics 2014, 58: 39-43. PMID: 25220016, PMCID: PMC4804755, DOI: 10.1016/j.ejmg.2014.08.008.Peer-Reviewed Original ResearchConceptsN-glycanase 1Proteasome-mediated degradationConserved enzymeFrame-shift mutationApparent intellectual disabilityBase pair deletionNeuromotor impairmentNovel homozygous frame-shift mutationHomozygous frame-shift mutationNeuronal cellsPair deletionAmyotrophic lateral sclerosisIntellectual disabilityMutationsProteinNeurological functionCorneal opacityNeurologic diseaseLateral sclerosisParkinson's diseaseProgressive lossDiseaseCytoplasmImpairmentDeletion
2011
Rare Copy Number Variants in Tourette Syndrome Disrupt Genes in Histaminergic Pathways and Overlap with Autism
Fernandez TV, Sanders SJ, Yurkiewicz IR, Ercan-Sencicek AG, Kim YS, Fishman DO, Raubeson MJ, Song Y, Yasuno K, Ho WS, Bilguvar K, Glessner J, Chu SH, Leckman JF, King RA, Gilbert DL, Heiman GA, Tischfield JA, Hoekstra PJ, Devlin B, Hakonarson H, Mane SM, Günel M, State MW. Rare Copy Number Variants in Tourette Syndrome Disrupt Genes in Histaminergic Pathways and Overlap with Autism. Biological Psychiatry 2011, 71: 392-402. PMID: 22169095, PMCID: PMC3282144, DOI: 10.1016/j.biopsych.2011.09.034.Peer-Reviewed Original ResearchConceptsCopy number variationsRare copy number variationsNovel risk regionsEnrichment of genesGamma-aminobutyric acid receptor genesNervous system developmentEtiology of TSParent-child triosRare copy number variantsCopy number variantsGene mappingPathway analysisDe novo eventsAxon guidanceCell adhesionMolecular pathwaysNumber variationsRelevant pathwaysCNV analysisNumber variantsGenesReceptor geneDe novoNovo eventsPathway
2010
Novel VLDLR microdeletion identified in two Turkish siblings with pachygyria and pontocerebellar atrophy
Kolb LE, Arlier Z, Yalcinkaya C, Ozturk AK, Moliterno JA, Erturk O, Bayrakli F, Korkmaz B, DiLuna ML, Yasuno K, Bilguvar K, Ozcelik T, Tuysuz B, State MW, Gunel M. Novel VLDLR microdeletion identified in two Turkish siblings with pachygyria and pontocerebellar atrophy. Neurogenetics 2010, 11: 319-325. PMID: 20082205, DOI: 10.1007/s10048-009-0232-y.Peer-Reviewed Original ResearchConceptsCerebellar hypoplasiaMajority of patientsLow-density lipoprotein receptorConstellation of findingsNon-progressive cerebellar ataxiaDensity lipoprotein receptorAutosomal recessive patternHomozygous deletionNeurological sequelaePontocerebellar atrophyDisequilibrium syndromeTurkish familyCerebellar atrophyNovel homozygous deletionLipoprotein receptorCerebellar ataxiaHypoplasiaMotor developmentMotor disabilityTurkish siblingsRecessive patternVLDLR geneCongenital ataxiaHeterogeneous groupSingle nucleotide polymorphisms