2022
Segmental basaloid follicular hamartomas derive from a post‐zygotic SMO p.L412F pathogenic variant and express hair follicle development‐related proteins in a pattern that distinguish them from basal cell carcinomas
Atzmony L, Ugwu N, Bercovitch LG, Robinson‐Bostom L, Ko CJ, Myung P, Choate KA. Segmental basaloid follicular hamartomas derive from a post‐zygotic SMO p.L412F pathogenic variant and express hair follicle development‐related proteins in a pattern that distinguish them from basal cell carcinomas. American Journal Of Medical Genetics Part A 2022, 188: 3525-3530. PMID: 35972041, PMCID: PMC9669121, DOI: 10.1002/ajmg.a.62951.Peer-Reviewed Original ResearchConceptsBasal cell carcinomaCell carcinomaFollicular hamartomaProliferation indexBasaloid skin tumorsSporadic basal cell carcinomasBasaloid follicular hamartomaKi-67 expressionLow proliferation indexCentral nervous systemWhole-exome sequencingSystemic involvementExpression of hedgehogMultiple lesionsSkin tumorsWnt/beta-catenin pathwayBasaloid lesionsNervous systemVariable involvementPathogenic variantsSegmental distributionPost-zygotic mutational eventSOX-9 expressionNormal tissuesExome sequencing
2020
Post‐zygotic ACTB mutations underlie congenital smooth muscle hamartomas
Atzmony L, Ugwu N, Zaki TD, Antaya RJ, Choate KA. Post‐zygotic ACTB mutations underlie congenital smooth muscle hamartomas. Journal Of Cutaneous Pathology 2020, 47: 681-685. PMID: 32170967, PMCID: PMC7943230, DOI: 10.1111/cup.13683.Peer-Reviewed Original ResearchConceptsCongenital smooth muscle hamartomaSmooth muscle hamartomaBecker's nevusMuscle hamartomaBecker nevus syndromeDirect sequencingHistopathological featuresHistopathological overlapBenign lesionsMosaic disordersPhenotypic spectrumNeviUnaffected tissueAffected tissuesHamartomaPost-zygotic mutationsHemihypertrophyEnrichment assayTissueMutationsACTB gene