2023
Eighth case of Li‐Campeau syndrome in a Turkish patient caused by a novel pathogenic variant in UBR7 and expanding the phenotype
Edizadeh M, Kaymakcalan H, Valilou S, Şahin Y. Eighth case of Li‐Campeau syndrome in a Turkish patient caused by a novel pathogenic variant in UBR7 and expanding the phenotype. American Journal Of Medical Genetics Part A 2023, 191: 1465-1469. PMID: 36757286, DOI: 10.1002/ajmg.a.63146.Peer-Reviewed Original ResearchConceptsExome sequencingPathogenic variantsCo-segregation studiesE3 ubiquitin protein ligaseUbiquitin-protein ligaseSplice site variantIn silico algorithmsBiallelic pathogenic variantsSite variantsUBR7Co-segregationSanger sequencingAutosomal recessive disorderBioinformatics prediction analysisDysmorphic featuresVariation c.Turkish familyHeterozygous statePathogenic effectsRecessive disorderCongenital heart defectsVariantsSequenceHeart defectsGenital anomalies
2022
Mutation spectrum of congenital heart disease in a consanguineous Turkish population
Dong W, Kaymakcalan H, Jin SC, Diab NS, Tanıdır C, Yalcin ASY, Ercan‐Sencicek A, Mane S, Gunel M, Lifton RP, Bilguvar K, Brueckner M. Mutation spectrum of congenital heart disease in a consanguineous Turkish population. Molecular Genetics & Genomic Medicine 2022, 10: e1944. PMID: 35481623, PMCID: PMC9184665, DOI: 10.1002/mgg3.1944.Peer-Reviewed Original ResearchConceptsWhole-exome sequencingLaterality defectsUnique genetic architectureCongenital heart diseaseConsanguineous familyGenetic architectureCausal genesCHD genesGenome analysisHomozygous variantGenetic landscapeGenetic lesionsGenomic alterationsHeart diseaseConsanguineous populationFunction variantsRecessive variantsCHD probandsGenesType of CHDMutation spectrumStructural congenital heart diseaseVariantsCHD subjectsAdditional patientsA rare etiology of tetralogy of Fallot with pulmonary atresia: Renpenning syndrome
Kaymakçalan H, Ercan-Şençiçek AG, Cebeci AN, Dong W, Yalçın A. A rare etiology of tetralogy of Fallot with pulmonary atresia: Renpenning syndrome. The Anatolian Journal Of Cardiology 2022, 26: 149-150. PMID: 35190366, PMCID: PMC8878915, DOI: 10.5152/anatoljcardiol.2021.554.Peer-Reviewed Case Reports and Technical Notes
2021
Prevalence and clinical/molecular characteristics of PTEN mutations in Turkish children with autism spectrum disorders and macrocephaly
Kaymakcalan H, Kaya İ, Binici N, Nikerel E, Özbaran B, Aksoy M, Erbilgin S, Özyurt G, Jahan N, Çelik D, Yararbaş K, Yalçınkaya L, Köse S, Durak S, Ercan‐Sencicek A. Prevalence and clinical/molecular characteristics of PTEN mutations in Turkish children with autism spectrum disorders and macrocephaly. Molecular Genetics & Genomic Medicine 2021, 9: e1739. PMID: 34268892, PMCID: PMC8404225, DOI: 10.1002/mgg3.1739.Peer-Reviewed Original Research
2019
1q21.1 Deletions and Duplications in 2 Siblings with Psychiatric Problems
Kaymakçalan H, Li P. 1q21.1 Deletions and Duplications in 2 Siblings with Psychiatric Problems. Indian Journal Of Pediatrics 2019, 86: 1068-1068. PMID: 31270733, DOI: 10.1007/s12098-019-03014-2.Peer-Reviewed Original Research
2018
Biallelic loss of human CTNNA2, encoding αN-catenin, leads to ARP2/3 complex overactivity and disordered cortical neuronal migration
Schaffer AE, Breuss MW, Caglayan AO, Al-Sanaa N, Al-Abdulwahed HY, Kaymakçalan H, Yılmaz C, Zaki MS, Rosti RO, Copeland B, Baek ST, Musaev D, Scott EC, Ben-Omran T, Kariminejad A, Kayserili H, Mojahedi F, Kara M, Cai N, Silhavy JL, Elsharif S, Fenercioglu E, Barshop BA, Kara B, Wang R, Stanley V, James KN, Nachnani R, Kalur A, Megahed H, Incecik F, Danda S, Alanay Y, Faqeih E, Melikishvili G, Mansour L, Miller I, Sukhudyan B, Chelly J, Dobyns WB, Bilguvar K, Jamra RA, Gunel M, Gleeson JG. Biallelic loss of human CTNNA2, encoding αN-catenin, leads to ARP2/3 complex overactivity and disordered cortical neuronal migration. Nature Genetics 2018, 50: 1093-1101. PMID: 30013181, PMCID: PMC6072555, DOI: 10.1038/s41588-018-0166-0.Peer-Reviewed Original ResearchConceptsNeuronal migrationHuman cerebral cortexCortical neuronal migrationΒ-catenin signalingCerebral cortexPotential disease mechanismsDevelopmental brain defectsBiallelic truncating mutationsNeuronal phenotypeBiallelic lossBrain defectsBiallelic mutationsTruncating mutationsDisease mechanismsΒ-cateninPachygyriaRecessive formNeurite stabilityNeuronsFamily membersCTNNA2OveractivityPatients
2017
Novel compound heterozygous mutations in GPT2 linked to microcephaly, and intellectual developmental disability with or without spastic paraplegia
Kaymakcalan H, Yarman Y, Goc N, Toy F, Meral C, Ercan‐Sencicek A, Gunel M. Novel compound heterozygous mutations in GPT2 linked to microcephaly, and intellectual developmental disability with or without spastic paraplegia. American Journal Of Medical Genetics Part A 2017, 176: 421-425. PMID: 29226631, DOI: 10.1002/ajmg.a.38558.Peer-Reviewed Case Reports and Technical NotesConceptsNovel compound heterozygous missense variantsSpastic paraplegiaNovel compound heterozygous variantsCompound heterozygous missense variantsMissense variantsNovel compound heterozygous mutationsCompound heterozygous variantsHeterozygous missense variantsCompound heterozygous mutationsFamily membersTurkish cohortIndex patientsIntellectual developmental disabilitiesClinical phenotypeHeterozygous variantsDevelopmental delayHeterozygous mutationsAffected sisterMale siblingsUnaffected parentsFemale siblingsIntellectual disabilityDevelopmental disabilitiesSanger sequencingParaplegiaALPK3 gene mutation in a patient with congenital cardiomyopathy and dysmorphic features
Çağlayan AO, Sezer RG, Kaymakçalan H, Ulgen E, Yavuz T, Baranoski JF, Bozaykut A, Harmanci AS, Yalcin Y, Youngblood MW, Yasuno K, Bilgüvar K, Gunel M. ALPK3 gene mutation in a patient with congenital cardiomyopathy and dysmorphic features. Molecular Case Studies 2017, 3: a001859. PMID: 28630369, PMCID: PMC5593152, DOI: 10.1101/mcs.a001859.Peer-Reviewed Original ResearchConceptsNovel homozygous frameshift mutationWk of gestationHomozygous pathogenic variantNovel disease-causing genesPhenotypic featuresHomozygous frameshift mutationWhole-exome sequencingHeterozygous family membersUnrelated consanguineous familiesEchocardiographic examinationDisease groupPrimary cardiomyopathyMale infantHypertrophic cardiomyopathyRoutine diagnostic toolCardiac diseaseCardiac abnormalitiesMale fetusesCardiomyopathyPathogenic variantsGenetic testingDysmorphic featuresGene mutationsPast historyDisease-causing genesExpanding the Genotypic Spectrum of Bathing Suit Ichthyosis
Marukian NV, Hu RH, Craiglow BG, Milstone LM, Zhou J, Theos A, Kaymakcalan H, Akkaya DA, Uitto JJ, Vahidnezhad H, Youssefian L, Bayliss SJ, Paller AS, Boyden LM, Choate KA. Expanding the Genotypic Spectrum of Bathing Suit Ichthyosis. JAMA Dermatology 2017, 153: 537-543. PMID: 28403434, PMCID: PMC5817618, DOI: 10.1001/jamadermatol.2017.0202.Peer-Reviewed Original Research
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
2014
Changes in peanut allergy prevalence in different ethnic groups in 2 time periods
Fox A, Kaymakcalan H, Perkin M, du Toit G, Lack G. Changes in peanut allergy prevalence in different ethnic groups in 2 time periods. Journal Of Allergy And Clinical Immunology 2014, 135: 580-582. PMID: 25441289, DOI: 10.1016/j.jaci.2014.09.022.Peer-Reviewed Original ResearchNGLY1 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 lossDiseaseCytoplasmImpairmentDeletionBrain Malformations Associated With Knobloch Syndrome—Review of Literature, Expanding Clinical Spectrum, and Identification of Novel Mutations
Caglayan AO, Baranoski JF, Aktar F, Han W, Tuysuz B, Guzel A, Guclu B, Kaymakcalan H, Aktekin B, Akgumus GT, Murray PB, Erson-Omay EZ, Caglar C, Bakircioglu M, Sakalar YB, Guzel E, Demir N, Tuncer O, Senturk S, Ekici B, Minja FJ, Šestan N, Yasuno K, Bilguvar K, Caksen H, Gunel M. Brain Malformations Associated With Knobloch Syndrome—Review of Literature, Expanding Clinical Spectrum, and Identification of Novel Mutations. Pediatric Neurology 2014, 51: 806-813.e8. PMID: 25456301, PMCID: PMC5056964, DOI: 10.1016/j.pediatrneurol.2014.08.025.Peer-Reviewed Original ResearchConceptsBrain malformationsKnobloch syndromeCentral nervous system malformationsExpanding Clinical SpectrumStructural brain abnormalitiesStructural brain malformationsNervous system malformationsHuman cerebral cortexHuman cortical developmentWhole-exome sequencingConfirmatory Sanger sequencingCase seriesClinical presentationCerebral cortexClinical spectrumBrain abnormalitiesOcular abnormalitiesSystem malformationsClinical utilityCortical developmentImmunohistochemical analysisRare diseaseCOL18A1 mutationsBrain developmentPatients
2013
Mutations in LAMB1 Cause Cobblestone Brain Malformation without Muscular or Ocular Abnormalities
Radmanesh F, Caglayan AO, Silhavy JL, Yilmaz C, Cantagrel V, Omar T, Rosti B, Kaymakcalan H, Gabriel S, Li M, Šestan N, Bilguvar K, Dobyns WB, Zaki MS, Gunel M, Gleeson JG. Mutations in LAMB1 Cause Cobblestone Brain Malformation without Muscular or Ocular Abnormalities. American Journal Of Human Genetics 2013, 92: 468-474. PMID: 23472759, PMCID: PMC3591846, DOI: 10.1016/j.ajhg.2013.02.005.Peer-Reviewed Original ResearchConceptsBrain malformationsCongenital muscular dystrophyOcular abnormalitiesPial surfaceWhite matter signal abnormalitiesNeuronal migration disordersRadial glial cellsPial basement membraneLaminin subunit beta-1Brainstem hypoplasiaFirst cortical layerSignal abnormalitiesCerebellar dysplasiaGlial cellsMigration disordersMuscular abnormalitiesOccipital encephaloceleCortical layersBrain diseasesAbnormalitiesHomozygous deleterious mutationMalformationsBeta 1Muscular dystrophyAffected individualsGenomic Analysis of Non-NF2 Meningiomas Reveals Mutations in TRAF7, KLF4, AKT1, and SMO
Clark VE, Erson-Omay EZ, Serin A, Yin J, Cotney J, Özduman K, Avşar T, Li J, Murray PB, Henegariu O, Yilmaz S, Günel JM, Carrión-Grant G, Yılmaz B, Grady C, Tanrıkulu B, Bakırcıoğlu M, Kaymakçalan H, Caglayan AO, Sencar L, Ceyhun E, Atik AF, Bayri Y, Bai H, Kolb LE, Hebert RM, Omay SB, Mishra-Gorur K, Choi M, Overton JD, Holland EC, Mane S, State MW, Bilgüvar K, Baehring JM, Gutin PH, Piepmeier JM, Vortmeyer A, Brennan CW, Pamir MN, Kılıç T, Lifton RP, Noonan JP, Yasuno K, Günel M. Genomic Analysis of Non-NF2 Meningiomas Reveals Mutations in TRAF7, KLF4, AKT1, and SMO. Science 2013, 339: 1077-1080. PMID: 23348505, PMCID: PMC4808587, DOI: 10.1126/science.1233009.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overBrain NeoplasmsChromosomes, Human, Pair 22DNA Mutational AnalysisFemaleGenes, Neurofibromatosis 2Genomic InstabilityGenomicsHumansKruppel-Like Factor 4Kruppel-Like Transcription FactorsMaleMeningeal NeoplasmsMeningiomaMiddle AgedMutationNeoplasm GradingProto-Oncogene Proteins c-aktReceptors, G-Protein-CoupledSmoothened ReceptorTumor Necrosis Factor Receptor-Associated Peptides and Proteins
2012
Prenatal Health, Educational Attainment, and Intergenerational Inequality: The Northern Finland Birth Cohort 1966 Study
Härkönen J, Kaymakçalan H, Mäki P, Taanila A. Prenatal Health, Educational Attainment, and Intergenerational Inequality: The Northern Finland Birth Cohort 1966 Study. Demography 2012, 49: 525-552. PMID: 22371210, DOI: 10.1007/s13524-012-0092-1.Peer-Reviewed Original ResearchConceptsEducational attainmentPrenatal healthPrenatal smokingHealth variablesLower educational attainment of childrenEducational attainment of childrenNorthern Finland Birth Cohort 1966 StudyShort-term health outcomesAttainment of childrenMother’s prenatal smokingEffects of healthBirth cohort dataLower educational attainmentUnmarried mothersIntergenerational inequalityIntergenerational processesAssociated with lower levelsEarly healthBackground inequalitiesHealth outcomesParenting classesCohort dataEducational inequalitiesHealth measuresHealth
2011
Recessive LAMC3 mutations cause malformations of occipital cortical development
Barak T, Kwan KY, Louvi A, Demirbilek V, Saygı S, Tüysüz B, Choi M, Boyacı H, Doerschner K, Zhu Y, Kaymakçalan H, Yılmaz S, Bakırcıoğlu M, Çağlayan A, Öztürk A, Yasuno K, Brunken WJ, Atalar E, Yalçınkaya C, Dinçer A, Bronen RA, Mane S, Özçelik T, Lifton RP, Šestan N, Bilgüvar K, Günel M. Recessive LAMC3 mutations cause malformations of occipital cortical development. Nature Genetics 2011, 43: 590-594. PMID: 21572413, PMCID: PMC3329933, DOI: 10.1038/ng.836.Peer-Reviewed Original Research
2010
Whole-exome sequencing identifies recessive WDR62 mutations in severe brain malformations
Bilgüvar K, Öztürk A, Louvi A, Kwan KY, Choi M, Tatlı B, Yalnızoğlu D, Tüysüz B, Çağlayan A, Gökben S, Kaymakçalan H, Barak T, Bakırcıoğlu M, Yasuno K, Ho W, Sanders S, Zhu Y, Yılmaz S, Dinçer A, Johnson MH, Bronen RA, Koçer N, Per H, Mane S, Pamir MN, Yalçınkaya C, Kumandaş S, Topçu M, Özmen M, Šestan N, Lifton RP, State MW, Günel M. Whole-exome sequencing identifies recessive WDR62 mutations in severe brain malformations. Nature 2010, 467: 207-210. PMID: 20729831, PMCID: PMC3129007, DOI: 10.1038/nature09327.Peer-Reviewed Original ResearchConceptsAbnormal cortical developmentWD repeat domain 62 (WDR62) geneSevere brain malformationsWhole-exome sequencingBrain abnormalitiesBrain malformationsCortical developmentMolecular pathogenesisCerebellar hypoplasiaWDR62 mutationsEmbryonic neurogenesisDiagnostic classificationMicrocephaly genesSmall family sizeGenetic heterogeneityWide spectrumRecessive mutationsPachygyriaPathogenesisHypoplasiaNeocortexNeurogenesisAbnormalitiesMalformationsMutations
2009
Clinical and genomic characterization of distal duplications and deletions of chromosome 4q: Study of two cases and review of the literature
Rossi MR, DiMaio MS, Xiang B, Lu K, Kaymakcalan H, Seashore M, Mahoney MJ, Li P. Clinical and genomic characterization of distal duplications and deletions of chromosome 4q: Study of two cases and review of the literature. American Journal Of Medical Genetics Part A 2009, 149A: 2788-2794. PMID: 19921640, PMCID: PMC2788106, DOI: 10.1002/ajmg.a.33088.Peer-Reviewed Original ResearchConceptsPierre Robin sequenceRobin sequenceVariable clinical presentationFurther genotype-phenotype correlationsMb deletionGenotype-phenotype correlationSecond patientClinical presentationCardiac anomaliesNewborn periodArray comparative genomic hybridization analysisComparative genomic hybridization analysisCardiac abnormalitiesPaternal genetic factorsGenomic hybridization analysisFamilial variantPatientsPregnant femalesGenetic factorsDistal duplicationVariable expressionVariable expressivityDistal long armGenomic findingsDisability
2006
Epidemiology of superficial mycosis (tinea pedis, onychomycosis) in elementary school children in Istanbul, Turkey.
Hapcioglu B, Yegenoglu Y, Disci R, Erturan Z, Kaymakcalan H. Epidemiology of superficial mycosis (tinea pedis, onychomycosis) in elementary school children in Istanbul, Turkey. Collegium Antropologicum 2006, 30: 119-24. PMID: 16617585.Peer-Reviewed Original ResearchConceptsPrevalence of tinea pedisTinea pedisTrichophyton rubrumOnychomycosis prevalenceCandida glabrataCandida albicansSuperficial mycosisDirect microscopyOnychomycosisCandidaTineaMale childrenAged 6PrevalenceIsolated agentsPedisNail samplesAgeSchool ageChildrenSchool childrenSkin scrapingsGlabrataChildren of elementary school ageAlbicans