Abstract：
:Canavan disease is an autosomal recessive leukodystrophy caused by the deficiency of aspartoacylase (ASPA). Sixty-four probands were analyzed for mutations in the ASPA gene. Three point mutations--693C-->A, 854A-->C, and 914C-->A--were identified in the coding sequence. The 693C-->A and 914C-->A base changes, resulting in nonsense tyr231-->ter and missense ala305-->glu mutations, respectively, lead to complete loss of ASPA activity in in vitro expression studies. The 854A-->C transversion converted glu to ala in codon 285. The glu285-->ala mutant ASPA has 2.5% of the activity expressed by the wild-type enzyme. A fourth mutation, 433 --2(A-->G) transition, was identified at the splice-acceptor site in intron 2. The splice-site mutation would lead to skipping of exon 3, accompanied by a frameshift, and thus would produce aberrant ASPA. Of the 128 unrelated Canavan chromosomes analyzed, 88 were from probands of Ashkenazi Jewish descent. The glu285-->ala mutation was predominant (82.9%) in this population, followed by the tyr231-->ter (14.8%) and 433 --2(A-->G) (1.1%) mutations. The three mutations account for 98.8% of the Canavan chromosomes of Ashkenazi Jewish origin. The ala305-->glu mutation was found exclusively in non-Jewish probands of European descent and constituted 60% of the 40 mutant chromosomes. Predominant occurrence of certain mutations among Ashkenazi Jewish and non-Jewish patients with Canavan disease would suggest a founding-father effect in propagation of these mutant chromosomes.
journal_name
Am J Hum Genetjournal_title
American journal of human geneticsauthors
Kaul R,Gao GP,Aloya M,Balamurugan K,Petrosky A,Michals K,Matalon Rsubject
Has Abstractpub_date
1994-07-01 00:00:00pages
34-41issue
1eissn
0002-9297issn
1537-6605journal_volume
55pub_type
杂志文章abstract：:We analyzed genome-wide association studies (GWASs), including data from 71,638 individuals from four ancestries, for estimated glomerular filtration rate (eGFR), a measure of kidney function used to define chronic kidney disease (CKD). We identified 20 loci attaining genome-wide-significant evidence of association (p...
journal_title：American journal of human genetics
pub_type： 杂志文章,meta分析
doi：10.1016/j.ajhg.2016.07.012
更新日期：2016-09-01 00:00:00
abstract：:We have demonstrated that human lymphocytes can respond to the synthetic polypeptide GLPhe upon in vitro challenge by the antigen similar to that of (H,G)-A--L, (T,G)-A--L, (Phe,G)-A--L, and GAT. Family studies further support our postulation that responses to these synthetic polymers are under dual gene control. Thre...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1985-05-01 00:00:00
abstract：:Monosomy for the X chromosome in humans creates a genetic Achilles' heel for nature to deal with. We report that the human X chromosome appears to have one-third the density of the coding sequence of the autosomes and, because of partial shielding from the high mutation rate of the male sex, that it should also have a...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/303010
更新日期：2000-08-01 00:00:00
abstract：:The gamete-competition model is an application of the Bradley-Terry model for ranking of sports teams. If allele i of a marker locus is assigned parameter taui>0, then the probability that a parent with heterozygous genotype i/j transmits allele i is Pr(i/j-->)=tau(i)/(tau(i) + tau(j). Mendelian segregation correspond...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/302826
更新日期：2000-03-01 00:00:00
abstract：:The National Research Council recommended the use of the ceiling principle in forensic applications of DNA testing on the grounds that the ceiling principle was believed to be "conservative," giving estimates greater than or equal to the actual genotype frequencies in the appropriate reference population. We show here...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1993-08-01 00:00:00
abstract：:Dyskeratosis congenita (DC) is an inherited disorder characterized by reticular pigmentation of the skin, dystrophic nails, mucosal leukoplakia, and a predisposition to cancer in early adult life. In the majority of cases, DC is an X-linked recessive trait. However, one or more autosomal form(s) of DC may exist. Altho...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1990-02-01 00:00:00
abstract：:We have analyzed 247 Brazilian mtDNAs for hypervariable segment (HVS)-I and selected restriction fragment-length-polymorphism sites, to assess their ancestry in different continents. The total sample showed nearly equal amounts of Native American, African, and European matrilineal genetic contribution but with regiona...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/303004
更新日期：2000-08-01 00:00:00
abstract：:Linkage disequilibrium was observed between newly identified DNA polymorphisms and a previously described protein polymorphism for plasminogen. This finding implies that the two types of polymorphisms describe variation at the same locus. The plasminogen gene was mapped to chromosomal bands 6q26-q27 using somatic-cell...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1987-04-01 00:00:00
abstract：:In linkage analysis, when the lod score is maximized over multiple genetic models, standard asymptotic approximation of the significance level does not apply. Monte Carlo methods can be used to estimate the p value, but procedures currently used are extremely inefficient. We propose a Monte Carlo procedure based on th...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1992-12-01 00:00:00
abstract：:Cone-rod dystrophy (CRD) and retinitis pigmentosa (RP) are clinically and genetically overlapping heterogeneous retinal dystrophies. By using homozygosity mapping in an individual with autosomal-recessive (ar) RP from a consanguineous family, we identified three sizeable homozygous regions, together encompassing 46 Mb...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2011.11.015
更新日期：2012-01-13 00:00:00
abstract：:Allan-Herndon-Dudley syndrome was among the first of the X-linked mental retardation syndromes to be described (in 1944) and among the first to be regionally mapped on the X chromosome (in 1990). Six large families with the syndrome have been identified, and linkage studies have placed the gene locus in Xq13.2. Mutati...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/431313
更新日期：2005-07-01 00:00:00
abstract：:Elevated body mass index (BMI) associates with cardiometabolic traits on observational analysis, yet the underlying causal relationships remain unclear. We conducted Mendelian randomization analyses by using a genetic score (GS) comprising 14 BMI-associated SNPs from a recent discovery analysis to investigate the caus...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2013.12.014
更新日期：2014-02-06 00:00:00
abstract：:Lumbar-disc herniation (LDH), one of the most common musculoskeletal diseases, has strong genetic determinants. Recently, several genes that encode extracellular matrix (ECM) proteins in the intervertebral disc have been reported to associate with LDH. Thrombospondins (THBSs) 1 and 2 are good candidates for the LDH su...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2008.03.013
更新日期：2008-05-01 00:00:00
abstract：:Lissencephaly is a malformation of cortical development typically caused by deficient neuronal migration resulting in cortical thickening and reduced gyration. Here we describe a "thin" lissencephaly (TLIS) variant characterized by megalencephaly, frontal predominant pachygyria, intellectual disability, and seizures. ...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2016.09.010
更新日期：2016-11-03 00:00:00
abstract：:Hereditary hemorrhagic telangiectasia (HHT), the most common inherited vascular disorder, is caused by mutations in genes involved in the transforming growth factor beta (TGF-β) signaling pathway (ENG, ACVRL1, and SMAD4). Yet, approximately 15% of individuals with clinical features of HHT do not have mutations in thes...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2013.07.004
更新日期：2013-09-05 00:00:00
abstract：:Although a considerable number of papers have been published dealing with the frequency and variety of genetic and nongenetic limb defects in newborns and to a lesser extent among embryos, little has been published about the range of limb defects among spontaneously aborted middle and late-term fetuses. This study rep...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1983-05-01 00:00:00
abstract：:DNA length polymorphism in the 5'-flanking region of the human insulin gene has been reported by Bell et al. (1981), Rotwein et al. (1981), and Owerbach and Nerup (1982). Bgl I digestions of human DNA that have been hybridized to an insulin probe using the Southern technique shows that there are two distinct groups of...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1983-03-01 00:00:00
abstract：:Genome-wide association studies (GWASs) are commonly used for the mapping of genetic loci that influence complex traits. A problem that is often encountered in both population-based and family-based GWASs is that of identifying cryptic relatedness and population stratification because it is well known that failure to ...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2012.05.024
更新日期：2012-07-13 00:00:00
abstract：:Thyroid-stimulating hormone (TSH) controls thyroid growth and hormone secretion through binding to its G protein-coupled receptor (TSHR) and production of cyclic AMP (cAMP). Serum TSH is a sensitive indicator of thyroid function, and overt abnormalities in thyroid function lead to common endocrine disorders affecting ...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2008.04.019
更新日期：2008-06-01 00:00:00
abstract：:Regional chromosomal mosaicism has been found in tissue from the clitoral mass of an infant presenting with ambiguous genitalia. Chromosome analysis of skin from the clitoral mass was interpreted as 46,XX/52,XX, +2, +7, +8, +12, +13, +20, whereas study of ovarian tissue and peripheral lymphocytes found each to have no...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1984-07-01 00:00:00
abstract：:This article provides evidence that selection has been a significant force during the evolution of the human mitochondrial genome. Both gene-by-gene and whole-genome approaches were used here to assess selection in the 560 mitochondrial DNA (mtDNA) coding-region sequences that were used previously for reduced-median-n...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/381505
更新日期：2004-02-01 00:00:00
abstract：:A four-generation Swedish family with a new type of X-linked mental retardation syndrome was recently reported by Gustavson et al. The complex syndrome includes microcephaly, severe mental retardation, optical atrophy with decreased vision or blindness, severe hearing defect, characteristic facial features, spasticity...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1993-06-01 00:00:00
abstract：:Patients with a strong family history of breast cancer are often counseled to receive genetic screening for BRCA1 and BRCA2 mutations, the strongest known predictors of breast cancer. A major limitation of genetic testing is the number of inconclusive results due to unclassified BRCA1 and BRCA2 sequence variants. Many...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/342192
更新日期：2002-09-01 00:00:00
abstract：:Copy number variants (CNVs) contribute to human genetic and phenotypic diversity. However, the distribution of larger CNVs in the general population remains largely unexplored. We identify large variants in approximately 2500 individuals by using Illumina SNP data, with an emphasis on "hotspots" prone to recurrent mut...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2008.12.014
更新日期：2009-02-01 00:00:00
abstract：:Exome sequencing has markedly enhanced the discovery of genes implicated in Mendelian disorders, particularly for individuals in whom a known clinical entity could not be assigned. This has led to the recognition that phenotypic heterogeneity resulting from allelic mutations occurs more commonly than previously apprec...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2017.12.015
更新日期：2018-02-01 00:00:00
abstract：:We have identified missense mutations at conserved amino acids in the PRPS1 gene on Xq22.3 in two families with a syndromic form of inherited peripheral neuropathy, one of Asian and one of European descent. The disease is inherited in an X-linked recessive manner, and the affected male patients invariably develop sens...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/519529
更新日期：2007-09-01 00:00:00
abstract：:Genetic hemochromatosis (GH) is believed to be a disease restricted to those of European ancestry. In northwestern Europe, >80% of GH patients are homozygous for one mutation, the substitution of tyrosine for cysteine at position 282 (C282Y) in the unprocessed protein. In a proportion of GH patients, two mutations are...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/302318
更新日期：1999-04-01 00:00:00
abstract：:Systemic lupus erythematosus is a prototypic autoimmune disease. Apart from rare monogenic deficiencies of complement factors, where lupuslike disease may occur in association with other autoimmune diseases or high susceptibility to bacterial infections, its etiology is multifactorial in nature. Cutaneous findings are...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/507848
更新日期：2006-10-01 00:00:00
abstract：:We have previously described a syndrome characterized by facial dysmorphism, lens dislocation, anterior-segment abnormalities, and spontaneous filtering blebs (FDLAB, or Traboulsi syndrome). In view of the consanguineous nature of the affected families and the likely autosomal-recessive inheritance pattern of this syn...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2014.04.002
更新日期：2014-05-01 00:00:00
abstract：:Multiple-synostosis syndrome is an autosomal dominant disorder characterized by progressive symphalangism, carpal/tarsal fusions, deafness, and mild facial dysmorphism. Heterozygosity for functional null mutations in the NOGGIN gene has been shown to be responsible for the disorder. However, in a cohort of six proband...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/503204
更新日期：2006-04-01 00:00:00
