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Steelman L S - - 2008
Mutations and chromosomal translocations occur in leukemic cells that result in elevated expression or constitutive activation of various growth factor receptors and downstream kinases. The Raf/MEK/ERK, PI3K/PTEN/Akt/mTOR and Jak/STAT pathways are often activated by mutations in upstream genes. The Raf/MEK/ERK and PI3K/PTEN/Akt/mTOR pathways are regulated by upstream Ras that is ...
P'ng Stephanie - - 2008
BACKGROUND & AIMS: Extrahepatic portal vein thrombosis and Budd-Chiari syndrome frequently result from multiple concurrent factors such as cirrhosis, intra-abdominal sepsis, procoagulant states, and underlying myeloproliferative disorders (MPDs). The JAK2 V617F mutation is a point mutation in the Janus kinase 2 (JAK2) tyrosine kinase that is variably present in MPDs. ...
Tanaka Ruriko - - 2008
JAK2V617F is a common mutation in chronic myeloproliferative diseases (CMPDs). We have developed a system utilizing JAK2V617F-specific guanine quenching probe (QP-system) to detect JAK2V617F. With QP-system, results can be obtained from 100 microl of blood within 90 min. We compared QP-system with direct sequencing using 42 CMPD patients' specimens. JAK2V617F ...
Leoyklang P - - 2008
Focal dermal hypoplasia (FDH) is an X-linked dominant disorder characterized by patchy dermal hypoplasia with digital, ocular and dental abnormalities. Very recently, mutations in the PORCN gene were demonstrated to cause FDH. Here, we described three unrelated Thai girls who were sporadic cases of FDH. One of them had unilateral ...
Zarebski Adrian - - 2008
Severe congenital neutropenia (SCN) is characterized by a deficiency of mature neutrophils, leading to recurrent bacterial and fungal infections. Although mutations in Elastase-2, neutrophil (ELA2) predominate in human SCN, mutation of Ela2 in mice does not recapitulate SCN. The growth factor independent-1 (GFI1) transcription factor regulates ELA2. Mutations in GFI1 ...
Horzinski L - - 2008
The CACH/VWM syndrome is an autosomal recessive leukodystrophy characterized by a broad spectrum of clinical presentations and by diffuse cavitary degeneration of the white matter on MRI. Mutations responsible for this disorder are missense or frameshift mutations occurring in the five genes (EIF2B1-5) that encode the translation eukaryotic initiation factor ...
Hadfield K D - - 2008
BACKGROUND: Schwannomatosis is a rare condition characterised by multiple schwannomas and lack of involvement of the vestibular nerve. A recent report identified bi-allelic mutations in the SMARCB1/INI1 gene in a single family with schwannomatosis. We aimed to establish the contribution of the SMARCB1 and the NF2 genes to sporadic and ...
Edwards Stacey L - - 2008
Cells with loss of BRCA2 function are defective in homologous recombination (HR) and are highly sensitive to inhibitors of poly(ADP-ribose) polymerase (PARP), which provides the basis for a new therapeutic approach. Here we show that resistance to PARP inhibition can be acquired by deletion of a mutation in BRCA2. We ...
Spinazzola Antonella - - 2008
Navajo neurohepatopathy is a hepato-cerebral variant of mitochondrial DNA depletion syndrome due to a specific mutation in MPV17, a gene located on human chromosome 2p. The same mutation was reported in an Italian family. To understand whether the MPV17 mutation was transmitted by descent from a common ancestor to Navajos ...
Chang Timothy T - - 2008
Patients with anhidrotic ectodermal dysplasia and immunodeficiency (EDA-ID) have mutations in the gene on the X chromosome encoding nuclear factor kappaB (NF-kappaB) essential modulator (NEMO), resulting in conical teeth, sparse hair, anhidrosis or hypohydrosis, and recurrent bacterial infections. The same gene is mutated in incontinentia pigmenti (IP), and mutations that ...
Wright J Timothy - - 2008
The distal-less homeobox gene DLX3 is expressed in a variety of tissues including placenta, skin, hair, teeth, and bone. Mutation of DLX3 (c.571_574delGGGG) causes the tricho-dento-osseous syndrome (TDO), characterized by abnormal hair, teeth, and bone. Evaluation of a kindred segregating the DLX3 c.561_562delCT mutation revealed distinct changes in the hair, ...
Sestini Roberta - - 2008
Schwannomatosis is characterized by the onset of multiple intracranial, spinal, or peripheral schwannomas, without involvement of the vestibular nerve, which is instead pathognomonic of neurofibromatosis type 2 (NF2). Recently, a schwannomatosis family with a germline mutation of the SMARCB1 gene on chromosome 22 has been described. We report on the ...
Hiragaki Takahiro - - 2008
The recessive black plumage mutation in the Japanese quail (Coturnix japonica) is controlled by an autosomal recessive gene (rb) and displays a blackish-brown phenotype in the recessive homozygous state (rb/rb). A similar black coat color phenotype in nonagouti mice is caused by an autosomal recessive mutation at the agouti locus. ...
Kim C A - - 2008
CONTEXT: Berardinelli-Seip congenital lipodystrophy (BSCL) is a rare recessive disease characterized by near absence of adipose tissue, resulting in severe dyslipidemia and insulin resistance. In most reported cases, BSCL is due to alterations in either seipin, of unknown function, or 1-acylglycerol-3-phosphate acyltransferase-beta (AGPAT2), which catalyzes the formation of phosphatidic acid. ...
Sims Lynn M - - 2008
Ubiquitin-specific protease 9, Y-linked (USP9Y), is a protein encoded by the Y chromosome. Its precise function in the cell is unknown, although a role in the regulation of protein turnover has been postulated. Nonetheless, mutations in this gene could result in the over- or under-abundance of proteins involved in the ...
Chhay J S - - 2008
Type III galactosaemia is a hereditary disease caused by reduced activity in the Leloir pathway enzyme, UDP-galactose 4'-epimerase (GALE). Traditionally, the condition has been divided into two forms-a mild, or peripheral, form and a severe, or generalized, form. Recently it has become apparent that there are disease states which are ...
Schmitt-Graeff Annette H - - 2008
Refractory anemia with ringed sideroblasts and marked thrombocytosis (RARS-T) was recently shown to be a JAK2-V617F mutation-related disorder. To determine the frequency and the prognostic significance of this mutation, we retrospectively evaluated 23 patients with platelet counts more than 600 x 10(9)/L, 15% ringed sideroblasts or more, and at least ...
Murphy H R - - 2008
Muir-Torre Syndrome (MTS) is a phenotypic variant of HNPCC traditionally associated with mutations in the mismatch repair genes MLH1 and MSH2. We draw attention to recent reports of MTS found in association with a constitutional MSH6 mutation and describe a further MTS family with a MSH6 mutation, in whom a ...
Tabata Ayako - - 2008
Deficiency of citrin, liver-type mitochondrial aspartate-glutamate carrier, is an autosomal recessive disorder caused by mutations of the SLC25A13 gene on chromosome 7q21.3 and has two phenotypes: neonatal intrahepatic cholestatic hepatitis (NICCD) and adult-onset type II citrullinemia (CTLN2). So far, we have described 19 SLC25A13 mutations. Here, we report 13 novel ...
Koppikar Priya - - 2008
The Philadelphia chromosome-negative myeloproliferative disorders (MPDs) polycythemia vera (PV), essential thrombocytosis (ET) and primary myelofibrosis (PMF) are characterized by increased proliferation of terminally differentiated myeloid cells. Although these disorders were recognized as clonal hematopoietic stem cell disorders more than 3 decades ago, little was known about the genetic basis for ...
Laprade Lisa - - 2007
The Spt-Ada-Gcn5-acetyltransferase (SAGA) complex of Saccharomyces cerevisiae is a multifunctional coactivator complex that has been shown to regulate transcription by distinct mechanisms. Previous results have shown that the Spt3 and Spt8 components of SAGA regulate initiation of transcription of particular genes by controlling the level of TATA-binding protein (TBP/Spt15) associated ...
Santos Marcelo A C G dos - - 2007
Multiple endocrine neoplasia type 2 (MEN2) is an autosomal dominant inherited tumor syndrome caused by RET proto-oncogene germline mutations (RET). Here we tested the Conformation Sensitive Gel Electrophoresis (CSGE) as a screening method for RET hot-spot mutations. Seven MEN2 families were studied by direct sequencing analysis, CSGE and Single Strand ...
Zamproni Ilaria - - 2008
CONTEXT: Dual oxidase 2 (DUOX2) is the catalytic core of the H(2)O(2) generator crucial for the iodination of thyroglobulin in thyroid hormone synthesis. DUOX2 deficiency produces congenital hypothyroidism (CH) in humans and mice. We recently cloned a novel gene, the product of which (dual oxidase maturation factor 2; DUOXA2) is ...
Nadeau N J - - 2007
We investigated TYRP1 as a candidate locus for the recessive, sex-linked roux (br(r)) phenotype in Japanese quail. A screen of the entire coding sequence of TYRP1 in roux and wild-type quail revealed a non-synonymous T-to-C substitution in exon 3, leading to a Phe282Ser mutation. This was perfectly associated with plumage ...
Nishihara Eijun - - 2007
Constitutively activating germline mutations of the thyrotropin receptor (TSHR) gene have been identified as a molecular cause of hereditary nonautoimmune hyperthyroidism. We describe here a Japanese kindred with two affected individuals who showed overt hyperthyroidism and mild goiter in the absence of TSHR antibodies. A novel heterozygous germline point mutation, ...
Bhattacharya Pradip - - 2008
The UV-absorption, fluorescence and CD spectra of aps 23 bp oligoduplexes were performed for potential diagnostic purpose. These oligonucleotide sequences were mimicked from natural mutations (mitochondrial genome) of human population (unpublished). This work was designed on the basis of hybridization of non-self complementary oligoduplexes (aps) containing no mismatch, one-mismatch and ...
Barkus Rosemarie V RV Department of Biology, Indiana University, Bloomington, IN 47405-3700, - - 2008
A screen for genes required in Drosophila eye development identified an UNC-104/Kif1 related kinesin-3 microtubule motor. Analysis of mutants suggested that Drosophila Unc-104 has neuronal functions that are distinct from those of the classic anterograde axonal motor, kinesin-1. In particular, unc-104 mutations did not cause the distal paralysis and focal ...
Broom W J - - 2008
Familial amyotrophic lateral sclerosis (ALS) accounts for 10% of all ALS. Approximately 20% of cases are due to mutations in the Cu/Zn superoxide dismutase gene (SOD1). In North America, SOD1(A4V) is the most common SOD1 mutation. Carriers of the SOD1(A4V) mutation share a common phenotype with rapid disease progression and ...
Ohyashiki Kazuma - - 2007
We established an automated mutational analysis detection system using magnetic filtration and the sequence-specific primer-single molecule fluorescence detection (SSP-SMFD) assay to identify the janus activating kinase-2 (JAK2)(V617F). DNA was extracted from 100 microL of whole blood automatically by a magnetic filtration system. The JAK2 1849G-->T mutation occurs in chronic myeloproliferative ...
Blahakova I - - 2007
Smith-Lemli-Opitz syndrome (SLOS) is an autosomal recessive metabolic disorder. SLOS is caused by the mutations in the gene for 3beta-hydroxysterol Delta(7) reductase (DHCR7; EC 1.3.1.21), which maps to chromosome 11q12-13. DHCR7 catalyses the final step in cholesterol biosynthesis-the reduction of 7-dehydrocholesterol to cholesterol. Clinical severity ranges from mild dysmorphism to ...
London Barry - - 2007
Brugada syndrome is a rare, autosomal-dominant, male-predominant form of idiopathic ventricular fibrillation characterized by a right bundle-branch block and ST elevation in the right precordial leads of the surface ECG. Mutations in the cardiac Na+ channel SCN5A on chromosome 3p21 cause approximately 20% of the cases of Brugada syndrome; most ...
Clements Suzanne E - - 2008
BACKGROUND: Focal dermal hypoplasia (FDH) (OMIM 305600) is an X-linked dominant disorder of ecto-mesodermal development. Also known as Goltz syndrome, FDH presents with characteristic linear streaks of hypoplastic dermis and variable abnormalities of bone, nails, hair, limbs, teeth and eyes. The molecular basis of FDH involves mutations in the PORCN ...
Pitteloud Nelly - - 2007
Gonadotropin-releasing hormone (GnRH) deficiency in the human presents either as normosmic idiopathic hypogonadotropic hypogonadism (nIHH) or with anosmia [Kallmann syndrome (KS)]. To date, several loci have been identified to cause these disorders, but only 30% of cases exhibit mutations in known genes. Recently, murine studies have demonstrated a critical role ...
Bowler D J M - - 2007
BACKGROUND: The Factor V Leiden (FVL) mutation is the commonest genetic abnormality associated with venous thromboembolism. AIMS: To determine the prevalence of the FVL mutation in Irish patients undergoing total hip replacement and whether it has an increased risk of deep venous thrombosis or pulmonary embolism (DVT/PE). METHODS: Prospective screening ...
van der Zee Julie J Neurodegenerative Brain Diseases Group, Department of Molecular Genetics, VIB, Antwerpen, - - 2008
The charged multivesicular body protein 2B gene (CHMP2B) was recently associated with frontotemporal lobar degeneration (FTLD) linked to chromosome 3 in a Danish FTLD family (FTD-3). In this family, a mutation in the acceptor splice site of exon 6 produced two aberrant transcripts predicting two C-truncated CHMP2B proteins due to ...
Matsson Hans - - 2008
Atrial septal defect (ASD) is one of the most frequent congenital heart defects (CHDs) with a variable phenotypic effect depending on the size of the septal shunt. We identified two pedigrees comprising 20 members segregating isolated autosomal dominant secundum ASD. By genetic mapping, we identified the gene-encoding alpha-cardiac actin (ACTC1), ...
Qin Daoming - - 2007
In bacteria, initiation of translation is kinetically controlled by factors IF1, IF2, and IF3, which work in conjunction with the 30S subunit to ensure accurate selection of the initiator tRNA (fMet-tRNA(fMet)) and the start codon. Here, we show that mutations G1338A and A790G of 16S rRNA decrease initiation fidelity in ...
Kalay Ersan - - 2007
Myosin XVA is an unconventional myosin which has been implicated in autosomal recessive nonsyndromic hearing impairment (ARNSHI) in humans. In Myo15A mouse models, vestibular dysfunction accompanies the autosomal recessive hearing loss. Genomewide homozygosity mapping and subsequent fine mapping in two Turkish families with ARNSHI revealed significant linkage to a critical ...
Gonzalez-Santos Juana Maria - - 2008
Mutations in PRPF3, a gene encoding the essential pre-mRNA splicing factor Hprp3p, have been identified in patients with autosomal dominant retinitis pigmentosa type 18 (RP18). Patients with RP18 have one of two single amino acid substitutions, Pro493Ser or Thr494Met, at the highly conserved Hprp3p C-terminal region. Pro493Ser occurs sporadically, whereas ...
McManus C Joel - - 2007
The highly conserved internal stem-loop (ISL) of U6 spliceosomal RNA is unwound for U4/U6 complex formation during spliceosome assembly and reformed upon U4 release during spliceosome activation. The U6 ISL is structurally similar to Domain 5 of group II self-splicing introns, and contains a dynamic bulge that coordinates a Mg++ ...
Dölek Bilgen - - 2007
Inherited gene disorders related to the hemostatic system have been documented as risk factors for thrombosis. The roles of factor V Hong Kong (FV Hong Kong), factor V Leiden (FV Leiden), factor II G20210A (FII G20210A), methylenetetrahydrofolate reductase (MTHFR) C677T, and MTHFR A1298C mutations in Turkish patients with thrombosis (270 ...
Rumié H - - 2007
Familial glucocorticoid deficiency (FGD) is a rare inherited disorder which may be caused by mutations in the ACTH receptor (melanocortin 2 receptor, MC2R) named FGD type 1 or by mutations in the MC2R accessory protein (MRAP) named FGD type 2. We report the case history of a male patient from ...
Richieri-Costa Antonio - - 2008
The etiologies and clinical spectra of HPE are extremely heterogeneous. Here, we report a Brazilian boy with lobar holoprosencephaly who was ascertained in a sample of 60 patients with HPE and HPE-like phenotypes and screened for molecular analysis of the major HPE causative genes: SHH, PTCH, SIX3, GLI2, and TGIF. ...
Ichikawa Shoji - - 2007
Familial tumoral calcinosis is characterized by ectopic calcifications and hyperphosphatemia due to inactivating mutations in FGF23 or UDP-N-acetyl-alpha-D-galactosamine:polypeptide N-acetylgalactosaminyltransferase 3 (GALNT3). Herein we report a homozygous missense mutation (H193R) in the KLOTHO (KL) gene of a 13-year-old girl who presented with severe tumoral calcinosis with dural and carotid artery calcifications. ...
Hoornaert Kristien P - - 2007
Czech dysplasia metatarsal type is an autosomal-dominant disorder characterized by an early-onset, progressive spondyloarthropathy with normal stature. Shortness of third and/or fourth toes is a frequently observed clinical feature. Similarities between individuals with this dysplasia and patients with an R275C mutation in the COL2A1 gene, prompted us to analyze the ...
De Domenico Ivana - - 2007
The term hemochromatosis represents a group of inherited disorders leading to iron overload. Mutations in HFE, HJV, and TfR2 cause autosomal-recessive forms of hemochromatosis. Mutations in ferroportin, however, result in dominantly inherited iron overload. Some mutations (H32R and N174I) in ferroportin lead to macrophage iron loading, while others (NI44H) lead ...
Chou Sunwen - - 2007
Recombinant phenotyping of cytomegalovirus (CMV) pol region III mutations from clinical specimens showed that T813S and G841A each conferred foscarnet resistance and approximately threefold increased ganciclovir resistance; adding the UL97 mutation C592G increased ganciclovir resistance to approximately sixfold. Bacterial artificial chromosome CMV clones containing pol mutation L845P were nonviable unless ...
Zhang Zhibing - - 2007
The SPAG16 gene encodes two major transcripts, one for the 71-kDa SPAG16L, which is the orthologue of the Chlamydomonas rheinhardtii central apparatus protein PF20, and a smaller transcript, which codes for the 35-kDa SPAG16S nuclear protein that represents the C-terminus (exons 11-16) of SPAG16L. We have previously reported that a ...
Haruna Kunitaka - - 2007
A 37-year-old Japanese male presented to us with persistent asteatotic skin with mild erythema on the trunk and extremities. Skin biopsy from the left knee showed marked epidermal acanthosis and hyperkeratosis, and milder granular degeneration. Ultrastructural analysis revealed clumping of the keratin filaments within suprabasal keratinocytes of the epidermis. Following ...
Lietman Steven A - - 2007
McCune-Albright syndrome (MAS) is characterized by the clinical triad of polyostotic fibrous dysplasia, café-au-lait pigmented skin lesions and endocrinopathy (1,2) The molecular lesion in MAS is a postzygotic mutation in the GNAS gene that leads to activation of Gsalpha, the alpha chain of the heterotrimeric G protein, Gsalpha. Cells that ...
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