2021
Expansion of NEUROD2 phenotypes to include developmental delay without seizures
Mis EK, Sega AG, Signer RH, Cartwright T, Ji W, Martinez‐Agosto J, Nelson SF, Palmer CGS, Lee H, Mitzelfelt T, Konstantino M, Network U, Jeffries L, Khokha MK, Marco E, Martin MG, Lakhani SA. Expansion of NEUROD2 phenotypes to include developmental delay without seizures. American Journal Of Medical Genetics Part A 2021, 185: 1076-1080. PMID: 33438828, PMCID: PMC8212414, DOI: 10.1002/ajmg.a.62064.Peer-Reviewed Original ResearchConceptsDevelopmental delayEarly-onset seizuresDe novo heterozygous variantsNovo heterozygous variantsDifferentiation factor 2Xenopus laevis tadpolesHeterozygous variantsSeizuresNeuronal differentiationParental studiesFunctional testingMissense variantsPatient variantsFunctional evidenceFactor 2Vivo assaysLaevis tadpolesVariant pathogenicityFunction effectsAdolescentsVariants
2018
De novo pathogenic variants in neuronal differentiation factor 2 (NEUROD2) cause a form of early infantile epileptic encephalopathy
Sega AG, Mis EK, Lindstrom K, Mercimek-Andrews S, Ji W, Cho MT, Juusola J, Konstantino M, Jeffries L, Khokha MK, Lakhani SA. De novo pathogenic variants in neuronal differentiation factor 2 (NEUROD2) cause a form of early infantile epileptic encephalopathy. Journal Of Medical Genetics 2018, 56: 113. PMID: 30323019, DOI: 10.1136/jmedgenet-2018-105322.Peer-Reviewed Original ResearchConceptsEarly infantile epileptic encephalopathyInfantile epileptic encephalopathyEpileptic encephalopathyPatient variantsDe novo pathogenic variantsNovel de novo variantNovo pathogenic variantsEarly-onset refractory seizuresDifferentiation factor 2Whole-exome sequencingNeuronal differentiation factorRefractory seizuresSignificant developmental delaySpontaneous seizuresUnderlying etiologyEctopic neuronsDe novo variantsPatient's conditionEncephalopathyPathogenic variantsSevere disordersDevelopmental delayUnrelated childrenExome sequencingGene mutationsTwo siblings with a novel nonsense variant provide further delineation of the spectrum of recessive KLHL7 diseases
Jeffries L, Olivieri JE, Ji W, Spencer-Manzon M, Bale A, Konstantino M, Lakhani SA. Two siblings with a novel nonsense variant provide further delineation of the spectrum of recessive KLHL7 diseases. European Journal Of Medical Genetics 2018, 62: 103551. PMID: 30300710, DOI: 10.1016/j.ejmg.2018.10.003.Peer-Reviewed Original ResearchConceptsKLHL7 mutationsCrisponi syndromeSyndrome type 1Novel nonsense variantBohring-Opitz syndromeNovel multisystem diseaseNovel homozygous nonsense mutationMultiple dysmorphic featuresClinical featuresClinical findingsMultisystem diseaseLike presentationHomozygous nonsense mutationType 1Dysmorphic featuresDevelopmental delaySyndromeFurther delineationNonsense variantClinical traitsPatientsMember 7DiseaseDisease-associated variantsSiblings