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https://www.readbyqxmd.com/read/28805479/on-variants-and-disease-causing-mutations-case-studies-of-a-sema4a-variant-identified-in-inherited-blindness
#1
Laura Bryant, Olga Lozynska, Grace Han, Jessica I W Morgan, Xiaowu Gai, Albert M Maguire, Tomas Aleman, Jean Bennett
The p.R713Q variant of the semaphorin-4a-encoding gene, SEMA4a, has been reported to cause autosomal dominant retinitis pigmentosa. Here we show three families with retinal degeneration in which unaffected family members are either homozygous or heterozygous for the variant. The p.R713Q variant in SEMA4A is insufficient to cause either autosomal recessive or autosomal dominant retinitis pigmentosa and is unlikely to be pathogenic.
August 14, 2017: Ophthalmic Genetics
https://www.readbyqxmd.com/read/28805452/birt-hogg-dube-syndrome-with-a-novel-mutation-in-the-flcn-gene
#2
Gulsum Kayhan, Nilgun Yılmaz Demirci, Haluk Turktas, Mehmet Ali Ergun
BACKGROUND: Birt-Hogg-Dube syndrome (BHDS) is an autosomal dominant disease characterized by hair follicle hamartomas, kidney tumors, and spontaneous pneumothorax; its cause is a heterozygous mutation in the FLCN gene. Colorectal polyps and carcinoma have also been reported in BHDS. FLCN mutations can be detected in patients with isolated primary spontaneous pneumothorax (PSP), so PSP may present as part of BHDS. The aim of this report is to enhance awareness that patients presenting with spontaneous PSP should be evaluated for FLCN mutations...
August 14, 2017: Genetic Testing and Molecular Biomarkers
https://www.readbyqxmd.com/read/28805093/monitoring-disease-progression-in-spinocerebellar-ataxias-implications-for-treatment-and-clinical-research
#3
Lidia Sarro, Lorenzo Nanetti, Anna Castaldo, Caterina Mariotti
Spinocerebellar ataxias (SCAs) are autosomal dominant diseases characterized by progressive gait and limb incoordination, disequilibrium, dysarthria, and eye movement disturbances. Approximately 40 genetic subtypes of SCAs are known and classified according to the causative disease gene/locus. With the possibility of the specific genetic diagnosis in patients and at-risk family members, several clinical scales and functional tests have been validated and used in ataxic patients with the purposes of measuring the entity of disease progression in natural history studies and the possible slowing of neurological impairment in therapeutic trials...
August 13, 2017: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/28803895/periderm-life-cycle-and-function-during-orofacial-and-epidermal-development
#4
REVIEW
Nigel L Hammond, Jill Dixon, Michael J Dixon
Development of the secondary palate involves a complex series of embryonic events which, if disrupted, result in the common congenital anomaly cleft palate. The secondary palate forms from paired palatal shelves which grow initially vertically before elevating to a horizontal position above the tongue and fusing together in the midline via the medial edge epithelia. As the epithelia of the vertical palatal shelves are in contact with the mandibular and lingual epithelia, pathological fusions between the palate and the mandible and/or the tongue must be prevented...
August 10, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/28803389/gastrointestinal-manifestations-of-stat3-deficient-hyper-ige-syndrome
#5
Manish Arora, Preet Bagi, Anna Strongin, Jennifer Heimall, Xiongce Zhao, Monica G Lawrence, Apurva Trivedi, Carolyn Henderson, Amy Hsu, Martha Quezado, David E Kleiner, Aradhana M Venkatesan, Steven M Holland, Alexandra F Freeman, Theo Heller
OBJECTIVE: STAT 3 deficiency (autosomal dominant hyper immunoglobulin E syndrome (AD-HIES)) is a primary immunodeficiency disorder with multi-organ involvement caused by dominant negative signal transducer and activator of transcription gene 3 (STAT3) mutations. We sought to describe the gastrointestinal (GI) manifestations of this disease. METHODS: Seventy subjects aged five to 60 years with a molecular diagnosis of AD-HIES were evaluated at the National Institutes of Health (NIH)...
August 13, 2017: Journal of Clinical Immunology
https://www.readbyqxmd.com/read/28803251/epidemiological-study-of-huntington-s-disease-in-the-province-of-ferrara-italy
#6
Erika Carrassi, Maura Pugliatti, Vittorio Govoni, Mariachiara Sensi, Ilaria Casetta, Enrico Granieri
BACKGROUND: Huntington's disease (HD) is an autosomal dominant neurodegenerative disorder caused by the abnormal expansion of CAG triplet repeat. We aimed to reappraise HD epidemiology in a northern Italian population, in relation to introduction of genetic testing. METHODS: Through ICD-9M code 333.4 and medical fare exemption code RF0080, HD cases were identified from administrative health data and medical records from the Units of Neurology and Genetics, Ferrara University Hospital, and from other provincial neurological structures...
August 12, 2017: Neuroepidemiology
https://www.readbyqxmd.com/read/28802383/absence-of-kcnq4-mutation-in-bengali-families-with-adnshl-originated-from-west-bengal-india
#7
Bidisha Adhikary, Biswabandhu Bankura, Subhradev Biswas, Silpita Paul, Madhusudan Das
OBJECTIVE: Autosomal Dominant Non-Syndromic Hearing Loss (ADNSHL) is extremely heterogeneous in nature. More than 60 loci with 30 different genes have been identified linked to ADNSHL. Mutation in KCNQ4 is considered as one of the most common causative factor responsible for ADNSHL. No study focused on the genetic alteration of KCNQ4 gene among hearing loss patients in India. The present study for the first time was carried out to determine the mutation spectrum of KCNQ4 gene in ADNSHL patients of West Bengal state, India...
September 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28802369/the-first-sporadic-case-of-dfna11-identified-by-next-generation-sequencing
#8
Yuka Kaneko, Atsuko Nakano, Yukiko Arimoto, Kiyomitsu Nara, Hideki Mutai, Tatsuo Matsunaga
We report the first sporadic case of nonsyndromic autosomal dominant hearing loss (DFNA11). The patient was a 5-year-old boy with moderate bilateral hearing loss. Targeted next-generation sequencing analysis of patient DNA identified a known heterozygous DFNA11 mutation, c.689C > T, in MYO7A, encoding p.Ala230Val. The mutation was not detected in the parents of the patient and is considered to be de novo. This mutation is identical to the one reported previously in an Italian family. Accumulation of mutation data increases the feasibility of identifying autosomal dominant mutations in sporadic sensorineural hearing loss...
September 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28802351/exome-sequencing-identifies-a-novel-missense-mutation-of-wfs1-as-the-cause-of-non-syndromic-low-frequency-hearing-loss-in-a-chinese-family
#9
Zhijie Niu, Yong Feng, Zhengmao Hu, Jiada Li, Jie Sun, Hongsheng Chen, Chufeng He, Xueping Wang, Lu Jiang, Yalan Liu, Xinzhang Cai, Lili Wang, Yuxiang Cai, Xuezhong Liu, Lingyun Mei
OBJECTIVE: Autosomal dominant non-syndromic low-frequency sensorineural hearing loss (LFSNHL) DFNA6/14/38 is an uncommon type of hearing loss that classically affects low frequencies of 2000 Hz and below, demonstrating an ascending configuration. The current study aimed to investigate the cause of LFSNHL in a five-generation Chinese family. METHODS: The phenotype of the Chinese family was characterized using audiologic testing and pedigree analysis. The combined approach of array screening and whole-exome sequencing was used to identify the disease-causing gene in this family...
September 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28802308/vitreous-amyloidosis-with-autonomic-neuropathy-of-the-digestive-tract-associated-with-a-novel-transthyretin-p-gly87arg-variant-in-a-bangladeshi-patient-a-case-report
#10
Benjamin Terrier, Magali Colombat, Caroline Beugnet, Astrid Quéant, Jonathan London, Jean-Baptiste Daudin, Claire Le Jeunne, Luc Mouthon, Dominique Monnet, Cécile Cauquil, Catherine Lacroix, David Adams, Antoine Brézin, Sophie Valleix
BACKGROUND: Hereditary transthyretin amyloidosis is an autosomal dominant inherited disorder, first described in families with sensorimotor and autonomic neuropathy. Since its first description, more than 120 amyloidogenic transthyretin mutations have been reported with various geographic distributions and associated with a wide range of phenotypes involving the peripheral nerve, the heart, the gastrointestinal tract, the eyes, the central nervous system, or the kidneys. In some cases of transthyretin amyloidosis, the first clinical manifestation is vitreous opacity...
August 13, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28802235/steviol-stabilizes-polycystin-1-expression-and-promotes-lysosomal-degradation-of-cftr-and-%C3%AE-catenin-proteins-in-renal-epithelial-cells
#11
Chaowalit Yuajit, Chatchai Muanprasat, Sureeporn Homvisasevongsa, Varanuj Chatsudthipong
Malfunction of polycystin 1 (PC1) is linked to abnormally high epithelial cell proliferation and fluid secretion, eventually leading to renal cyst development and declined renal function as found in autosomal dominant polycystic kidney disease (ADPKD). Currently, there is no effective therapy for ADPKD. Recent studies report PC1 regulates CFTR chloride channels and β-catenin levels in normal renal epithelial cells. Concurrently, our previous study found steviol retarded renal cyst enlargement in an in vitro and in an in vivo models by reducing CFTR expression and activity...
August 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28801991/early-autism-symptoms-in-infants-with-tuberous-sclerosis-complex
#12
Nicole M McDonald, Kandice J Varcin, Rujuta Bhatt, Joyce Y Wu, Mustafa Sahin, Charles A Nelson, Shafali S Jeste
Tuberous sclerosis complex (TSC) is a rare, autosomal dominant genetic syndrome that confers significantly increased risk for autism spectrum disorder (ASD), with 50-60% of infants with TSC meeting criteria for ASD by 3 years of age. In a previous study of the current longitudinal cohort, we found that infants with TSC who develop ASD (TSC/ASD) evidence decreased cognitive abilities that diverge from infants with TSC and no ASD (TSC/no ASD). We extended this work by asking whether TSC/ASD infants (n = 13) differed from TSC/no ASD infants (n = 10) and infants with low developmental risk and no ASD (LR; n = 21) in their social communication functioning during the first year of life...
August 11, 2017: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/28801591/new-variant-and-expression-studies-provide-further-insight-into-the-genotype-phenotype-correlation-in-yap1-related-developmental-eye-disorders
#13
R Holt, F Ceroni, D A Bax, S Broadgate, D Gold Diaz, C Santos, D Gerrelli, N K Ragge
YAP1, which encodes the Yes-associated protein 1, is part of the Hippo pathway involved in development, growth, repair and homeostasis. Nonsense YAP1 mutations have been shown to co-segregate with autosomal dominantly inherited coloboma. Therefore, we screened YAP1 for variants in a cohort of 258 undiagnosed UK patients with developmental eye disorders, including anophthalmia, microphthalmia and coloboma. We identified a novel 1 bp deletion in YAP1 in a boy with bilateral microphthalmia and bilateral chorioretinal coloboma...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28800680/pharmacological-inhibition-of-fsgs-related-trpc6-gain-of-function-mutants-by-semisynthetic-larixol-derived-compounds
#14
Nicole Urban, Sonja Neuser, Anika Hentschel, Sebastian Köhling, Jörg Rademann, Michael Schaefer
BACKGROUND AND PURPOSE: Gain of function mutations in TRPC6 can cause autosomal dominant forms of focal segmental glomerulosclerosis (FSGS). Validated inhibitors of TRPC6 that are biologically active on FSGS-related TRPC6 mutants are eagerly sought. EXPERIMENTAL APPROACH: We synthesized new TRPC6-inhibiting modulators from larixol, a resiniferous constituent of Larix decidua, and tested the potency and selectivity in cell lines stably expressing various TRP channel isoforms...
August 11, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28798362/a-large-family-with-inherited-optic-disc-anomalies-a-correlation-between-a-new-genetic-locus-and-complex-ocular-phenotypes
#15
Decai Wang, Xinyuan Pan, Jiangdong Ji, Shun Gu, Xiantao Sun, Chao Jiang, Weiyi Xia, Zhihua Qiu, Xiaoli Kang, Sijia Ding, Qinghuai Liu, Xue Chen, Fang Lu, Chen Zhao
Congenital cavitary optic disc anomalies (CODA) is clinically typified by an enlarged excavation of optic disc in diverse degrees. Here, we report the clinical and genetic findings in a four-generation Chinese family with a complicated form of autosomal dominant CODA. Cardinal manifestations included bilateral excavated optic disc with multiple cilioretinal vessels emerging and bilateral retinoschisis with great variability in the range of extension and severity. Other intra-familial phenotypic diversities were also noted, including severity in retinal atrophy, onset age of visual impairment and presence of congenital nystagmus and strabismus...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28797512/tumor-syndromes-that-include-bone-tumors-an-update
#16
REVIEW
Maria Gnoli, Francesca Ponti, Luca Sangiorgi
Tumor syndromes, including bone neoplasias, are genetic predisposing conditions characterized by the development of a pattern of malignancies within a family at an early age of onset. Occurrence of bilateral, multifocal, or metachronous neoplasias and specific histopathologic findings suggest a genetic predisposition syndrome. Additional clinical features not related to the neoplasia can be a hallmark of specific genetic syndromes. Mostly, those diseases have an autosomal dominant pattern of inheritance with variable percentage of penetrance...
September 2017: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/28796572/endoglin-and-alk1-as-therapeutic-targets-for-hereditary-hemorrhagic-telangiectasia
#17
Lidia Ruiz-Llorente, Eunate Gallardo-Vara, Elisa Rossi, David M Smadja, Luisa M Botella, Carmelo Bernabeu
Hereditary Haemorrhagic Telangiectasia (HHT) is as an autosomal dominant trait characterized by frequent nose bleeds, mucocutaneous telangiectases, arteriovenous malformations (AVMs) of the lung, liver and brain, and gastrointestinal bleedings due to telangiectases. HHT is originated by mutations in genes whose encoded proteins are involved in the transforming growth factor β (TGF-β) family signalling of vascular endothelial cells. In spite of the great advances in the diagnosis as well as in the molecular, cellular and animal models of HHT, the current treatments remain just at the palliative level...
August 10, 2017: Expert Opinion on Therapeutic Targets
https://www.readbyqxmd.com/read/28795988/eltrombopag-to-treat-thrombocytopenia-during-last-month-of-pregnancy-in-a-woman-with-myh9-related-disease-a-case-report
#18
Remi Favier, Celine De Carne, Elisabeth Elefant, Ruxanda Lapusneanu, Vasiliki Gkalea, Agnès Rigouzzo
MYH9-related disease (MYH9-RD) is an inherited rare autosomal dominant macrothrombocytopenia. Patients with MYH9-RD have giant platelets and leukocyte inclusion bodies caused by mutations in the MYH9 gene encoding the non-muscle myosin heavy chain II-A. Before identification of the causative gene, patients were diagnosed as Epstein or Fechtner or Sebastian syndromes or May-Hegglin anomaly. As with other inherited thrombocytopenias, the risk of increased bleeding during perioperative period or delivery is a major concern...
August 8, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28795768/hereditary-angioedema-with-a-mutation-in-the-plasminogen-gene
#19
K Bork, K Wulff, L Steinmüller-Magin, I Braenne, P Staubach-Renz, G Witzke, J Hardt
BACKGROUND: Hereditary angioedema (HAE) with normal C1-INH (HAEnCI) may be linked to specific mutations in the coagulation factor 12 (FXII) gene (HAE-FXII) or functional mutations in other genes that are still unknown. We sought to identify and characterize a hitherto unknown type of HAE with normal C1-INH and without mutation in the F12 gene. METHODS: The study comprised analysis of whole exome sequencing, Sanger sequencing, and clinical data of patients. RESULTS: We detected a mutation in the plasminogen gene in patients with HAEnCI...
August 10, 2017: Allergy
https://www.readbyqxmd.com/read/28794915/occurrence-of-synpolydactyly-and-omphalocele-in-a-fetus-with-a-hoxd13-mutation
#20
Periyasamy Radhakrishnan, Shalini S Nayak, Muralidhar V Pai, Anju Shukla, Katta M Girisha
Synpolydactyly (SPD) is an autosomal dominant congenital limb disorder due to mutations in HOXD13 . It is a phenotypically heterogeneous condition characterized by syndactyly of the third finger (F3), fourth finger (F4) and/or fourth toe (T4), and fifth toe (T5) with variably associated polydactyly. We report on a mother and fetus with SPD. The mother has a novel mutation (c.708_708delC) in the HOXD13 gene that was also seen in the fetus. However, the fetus had congenital omphalocele in addition to SPD that is an association not reported to date...
September 2017: Journal of Pediatric Genetics
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