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Yang, Edward

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Yang

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Edward

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Yang, Edward

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2017 - 20182

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Author's Publications: search.filters.isAuthorOfPublication.229a6949-f29d-4ce0-8ec8-7cf4b6aae624

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    De novo ATP1A3 and compound heterozygous NLRP3 mutations in a child with autism spectrum disorder, episodic fatigue and somnolence, and muckle-wells syndrome
    (Elsevier, 2018) Torres, Alcy; Brownstein, Catherine; Tembulkar, Sahil K.; Graber, Kelsey; Genetti, Casie; Kleiman, Robin J.; Sweadner, Kathleen; Mavros, Chrystal; Liu, Kevin X.; Smedemark-Margulies, Niklas; Maski, Kiran; Yang, Edward; Agrawal, Pankaj; Shi, Jiahai; Beggs, Alan; D'Angelo, Eugene; Lincoln, Sarah Hope; Carroll, Devon; Dedeoglu, Fatma; Gahl, William A.; Biggs, Catherine M.; Swoboda, Kathryn; Berry, Gerard; Gonzalez-Heydrich, Joseph
    Complex phenotypes may represent novel syndromes that are the composite interaction of several genetic and environmental factors. We describe an 9-year old male with high functioning autism spectrum disorder and Muckle-Wells syndrome who at age 5 years of age manifested perseverations that interfered with his functioning at home and at school. After age 6, he developed intermittent episodes of fatigue and somnolence lasting from hours to weeks that evolved over the course of months to more chronic hypersomnia. Whole exome sequencing showed three mutations in genes potentially involved in his clinical phenotype. The patient has a predicted pathogenic de novo heterozygous p.Ala681Thr mutation in the ATP1A3 gene (chr19:42480621C>T, GRCh37/hg19). Mutations in this gene are known to cause Alternating Hemiplegia of Childhood, Rapid Onset Dystonia Parkinsonism, and CAPOS syndrome, sometimes accompanied by autistic features. The patient also has compound heterozygosity for p.Arg490Lys/p.Val200Met mutations in the NLRP3 gene (chr1:247588214G>A and chr1:247587343G>A, respectively). NLRP3 mutations are associated in an autosomal dominant manner with clinically overlapping auto-inflammatory conditions including Muckle-Wells syndrome. The p.Arg490Lys is a known pathogenic mutation inherited from the patient's father. The p.Val200Met mutation, inherited from his mother, is a variant of unknown significance (VUS). Whether the de novoATP1A3mutation is responsible for or plays a role in the patient's episodes of fatigue and somnolence remains to be determined. The unprecedented combination of two NLRP3 mutations may be responsible for other aspects of his complex phenotype.
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    A normative spatiotemporal MRI atlas of the fetal brain for automatic segmentation and analysis of early brain growth
    (Nature Publishing Group UK, 2017) Gholipour, Ali; Rollins, Caitlin; Velasco-Annis, Clemente; Ouaalam, Abdelhakim; Akhondi-Asl, Alireza; Afacan, Onur; Ortinau, Cynthia M.; Clancy, Sean; Limperopoulos, Catherine; Yang, Edward; Estroff, Judy; Warfield, Simon
    Longitudinal characterization of early brain growth in-utero has been limited by a number of challenges in fetal imaging, the rapid change in size, shape and volume of the developing brain, and the consequent lack of suitable algorithms for fetal brain image analysis. There is a need for an improved digital brain atlas of the spatiotemporal maturation of the fetal brain extending over the key developmental periods. We have developed an algorithm for construction of an unbiased four-dimensional atlas of the developing fetal brain by integrating symmetric diffeomorphic deformable registration in space with kernel regression in age. We applied this new algorithm to construct a spatiotemporal atlas from MRI of 81 normal fetuses scanned between 19 and 39 weeks of gestation and labeled the structures of the developing brain. We evaluated the use of this atlas and additional individual fetal brain MRI atlases for completely automatic multi-atlas segmentation of fetal brain MRI. The atlas is available online as a reference for anatomy and for registration and segmentation, to aid in connectivity analysis, and for groupwise and longitudinal analysis of early brain growth.