Abstract：
:Sensorineural deafness and retinitis pigmentosa (RP) are the hallmarks of Usher syndrome (USH) but are also prominent features in peroxisomal biogenesis defects (PBDs); both are autosomal recessively inherited. The firstborn son of unrelated parents, who both had sensorineural deafness and RP diagnosed as USH, presented with sensorineural deafness, RP, dysmorphism, developmental delay, hepatomegaly, and hypsarrhythmia and died at age 17 mo. The infant was shown to have a PBD, on the basis of elevated plasma levels of very-long- and branched-chain fatty acids (VLCFAs and BCFAs), deficiency of multiple peroxisomal functions in fibroblasts, and complete absence of peroxisomes in fibroblasts and liver. Surprisingly, both parents had elevated plasma levels of VLCFAs and BCFAs. Fibroblast studies confirmed that both parents had a PBD. The parents' milder phenotypes correlated with relatively mild peroxisomal biochemical dysfunction and with catalase immunofluorescence microscopy demonstrating mosaicism and temperature sensitivity in fibroblasts. The infant and both of his parents belonged to complementation group C. PEX6 gene sequencing revealed mutations on both alleles, in the infant and in his parents. This unique family is the first report of a PBD with which the parents are themselves affected individuals rather than asymptomatic carriers. Because of considerable overlap between USH and milder PBD phenotypes, individuals suspected to have USH should be screened for peroxisomal dysfunction.
journal_name
Am J Hum Genetjournal_title
American journal of human geneticsauthors
Raas-Rothschild A,Wanders RJ,Mooijer PA,Gootjes J,Waterham HR,Gutman A,Suzuki Y,Shimozawa N,Kondo N,Eshel G,Espeel M,Roels F,Korman SHdoi
10.1086/339766subject
Has Abstractpub_date
2002-04-01 00:00:00pages
1062-8issue
4eissn
0002-9297issn
1537-6605pii
S0002-9297(07)60318-8journal_volume
70pub_type
杂志文章abstract：:We report here the genetic cause of the X-linked syndrome of psychosis, pyramidal signs, and macro-orchidism (PPM-X) in a three-generation family manifesting the disorder as a mutation in the methyl-CpG binding-protein 2 (MECP2) gene in Xq28. The A140V mutation was found in all affected males and all carrier females i...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/339553
更新日期：2002-04-01 00:00:00
abstract：:Hereditary multiple exostoses (EXT) is an autosomal dominant disorder characterized by the formation of cartilage-capped prominences that develop from the growth centers of the long bones. EXT is genetically heterogeneous, with three loci, currently identified on chromosomes 8q24.1, 11p13, and 19q. The EXT1 gene, loca...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
abstract：:Despite the growing consensus on the importance of testing gene-gene interactions in genetic studies of complex diseases, the effect of gene-gene interactions has often been defined as a deviance from genetic additive effects, which is essentially treated as a residual term in genetic analysis and leads to low power i...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/508571
更新日期：2006-11-01 00:00:00
abstract：:Knowledge of haplotype phase is valuable for many analysis methods in the study of disease, population, and evolutionary genetics. Considerable research effort has been devoted to the development of statistical and computational methods that infer haplotype phase from genotype data. Although a substantial number of su...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/500808
更新日期：2006-03-01 00:00:00
abstract：:A model is considered to calculate effects of genetic drift on the expected proportion of new mutants amongst males affected by a sex-linked recessive lethal. We show how to relate the number of cases of the disorder in males to the expected deviations from the deterministic value of the proportion of new mutants. For...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1979-03-01 00:00:00
abstract：:Ataxia-pancytopenia (AP) syndrome is characterized by cerebellar ataxia, variable hematologic cytopenias, and predisposition to marrow failure and myeloid leukemia, sometimes associated with monosomy 7. Here, in the four-generation family UW-AP, linkage analysis revealed four regions that provided the maximal LOD scor...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2016.04.009
更新日期：2016-06-02 00:00:00
abstract：:A study was undertaken to characterize the mutation(s) responsible for Tay-Sachs disease (TSD) in a Cajun population in southwest Louisiana and to identify the origins of these mutations. Eleven of 12 infantile TSD alleles examined in six families had the beta-hexosaminidase A (Hex A) alpha-subunit exon 11 insertion m...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1992-11-01 00:00:00
abstract：:Beckwith-Wiedeman syndrome (BWS) and Klippel-Trenaunay-Weber syndrome (KTWS) are different human disorders characterized, among other features, by tissue overgrowth. Deregulation of one or more imprinted genes located at chromosome 11p15.5, of which insulin-like growth factor 2 (IGF2) is the most likely candidate, is ...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/302811
更新日期：2000-03-01 00:00:00
abstract：:The effects of reproductive compensation on an X-linked recessive lethal are examined. Complete compensation without regard to the sex of the offspring increases the incidence of female carriers by a factor of 1.5, and of affected males by 1.33. However, if families reproduce until they have a healthy male offspring, ...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1980-07-01 00:00:00
abstract：:Misspecification of transmission model parameters can produce artifactually negative lod scores at small recombination fractions and in multipoint analysis. To avoid this problem, we have tried to devise a test that aims to detect a genetic effect at a particular locus, rather than attempting to estimate the map posit...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1995-09-01 00:00:00
abstract：:A novel type IV collagen, alpha 3(IV), has recently been identified in human and bovine basement membranes. Here we describe the cloning and sequencing of a cDNA encoding 218 residues of the NC1 domain of the human alpha 3(IV) chain. Of interest is the possible role of abnormalities of the alpha 3(IV) chain in Alport ...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1991-09-01 00:00:00
abstract：:Understanding the nature of the genetic regulation of gene expression promises to advance our understanding of the genetic basis of disease. However, the methodological impact of the use of local ancestry on high-dimensional omics analyses, including, most prominently, expression quantitative trait loci (eQTL) mapping...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2019.04.009
更新日期：2019-06-06 00:00:00
abstract：:We defined a relative-fat-pattern index (RFPI) as the ratio of subscapular skinfold thickness to the sum of subscapular and suprailiac skinfold thicknesses and computed RFPI for 774 adults (age greater than or equal to 25 years) in 59 pedigrees ascertained through cases of cardiovascular disease. Likelihood analysis o...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1989-12-01 00:00:00
abstract：:Retinitis pigmentosa (RP) is a group of disorders characterized by progressive degeneration of the outer retina, resulting in night blindness, visual field loss, an abnormal electroretinogram, and characteristic retinal pigmentary changes. An important step in the understanding of RP has been the recognition that some...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1991-10-01 00:00:00
abstract：:The lymphatic vasculature is essential for the recirculation of extracellular fluid, fat absorption, and immune function and as a route of tumor metastasis. The dissection of molecular mechanisms underlying lymphangiogenesis has been accelerated by the identification of tissue-specific lymphatic endothelial markers an...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2010.08.008
更新日期：2010-09-10 00:00:00
abstract：:We have analyzed 35 widely distributed, polymorphic Alu loci in 715 individuals from 31 world populations. The average frequency of Alu insertions (the derived state) is lowest in Africa (.42) but is higher and similar in India (.55), Europe (.56), and Asia (.57). A comparison with 30 restriction-site polymorphisms (R...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/318793
更新日期：2001-03-01 00:00:00
abstract：:The dominant cerebellar ataxias (ADCAs) represent a clinically and genetically heterogeneous group of disorders linked by progressive deterioration in balance and coordination. The utility of genetic classification of the ADCAs has been highlighted by the striking variability in clinical phenotype observed within fami...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1997-04-01 00:00:00
abstract：:Ehlers-Danlos syndrome (EDS) type IV is a dominantly inherited disorder that results from mutations in the type III collagen gene (COL3A1). We studied the structure of the COL3A1 gene of an individual with EDS type IV and that of her phenotypically normal parents. The proband was heterozygous for a 2-kb deletion in CO...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1993-07-01 00:00:00
abstract：:Results of autism linkage studies have been difficult to interpret across research groups, prompting the use of ever-increasing sample sizes to increase power. However, increasing sample size by pooling disparate collections for a single analysis may, in fact, not increase power in the face of genetic heterogeneity. H...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/429345
更新日期：2005-04-01 00:00:00
abstract：:The microsatellite marker DXS426 maps to the interval Xp21.1-Xp11.21, the chromosomal region which contains two loci for X-linked retinitis pigmentosa (XLRP; RP2 and RP3). We have refined the localization of DXS426 both physically, by mapping it to a deletion which spans the interval Xp21.3-Xp11.23, and genetically, b...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1990-12-01 00:00:00
abstract：:Data from the Research Roster for Huntington Disease Patients and Families were used to assess the hypothesis that juvenile onset in Huntington disease is determined by an X-linked recessive modifying gene in the affected parent. The observed proportion of affected fathers to affected mothers who had such offspring w...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1992-03-01 00:00:00
abstract：:Hereditary nonpolyposis colorectal cancer (HNPCC) accounts for approximately 2% of all colorectal cancer (CRC) cases and is the most common hereditary CRC syndrome. We have previously reported a high incidence of microsatellite instability (MSI) and germline mismatch repair (MMR) gene mutations in young Hong Kong Chin...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/383591
更新日期：2004-05-01 00:00:00
abstract：:Several RFLPs have been detected using a cDNA fragment encoding the amino-terminal half of the A subunit of factor XIII. The RFLPs show little linkage disequilibrium and form many different haplotypes that can be used to identify chromosomes transmitting factor XIII A subunit deficiency. Southern blot analysis of thre...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1988-05-01 00:00:00
abstract：:Aberrant gene expression underlies many human diseases. RNA polymerase II (Pol II) pausing is a key regulatory step in transcription. Here, we mapped the locations of RNA Pol II in normal human cells and found that RNA Pol II pauses in a consistent manner across individuals and cell types. At more than 1,000 genes inc...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2019.08.003
更新日期：2019-10-03 00:00:00
abstract：:A rare germ-line polymorphism in codon 47 of the p53 gene replaces the wild-type proline (CCG) with a serine (TCG). Restriction analysis of 101 human samples revealed the frequency of the rare allele to be 0% (n = 69) in Caucasians and 4.7% (3/64, n = 32) among African-Americans. To investigate the consequence of this...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1993-09-01 00:00:00
abstract：:Humans vary >100-fold in their sensitivity to the harmful effects of ultraviolet radiation. The main determinants of sensitivity are melanin pigmentation and less-well-characterized differences in skin inflammation and repair processes. Pigmentation has a high heritability, but susceptibility to cancers of the skin, a...
journal_title：American journal of human genetics
pub_type： 杂志文章,评审
doi：10.1086/425285
更新日期：2004-11-01 00:00:00
abstract：:Lymphedema is the clinical manifestation of defects in lymphatic structure or function. Mutations identified in genes regulating lymphatic development result in inherited lymphedema. No mutations have yet been identified in genes mediating lymphatic function that result in inherited lymphedema. Survey microarray studi...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2010.04.010
更新日期：2010-06-11 00:00:00
abstract：:The ascertainment problem arises when families are sampled by a nonrandom process and some assumption about this sampling process must be made in order to estimate genetic parameters. Under classical ascertainment assumptions, estimation of genetic parameters cannot be separated from estimation of the parameters of th...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1988-10-01 00:00:00
abstract：:Two pregnancies at risk for glutaric acidemia were monitored. In one, in which the fetus was not affected, glutaric acid was not detected in the amniotic fluid at amniocentesis (15 weeks) and the glutaryl-CoA dehydrogenase activity of cultured amniotic cells was normal. In the other, a marked elevation of glutaric aci...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1980-09-01 00:00:00
abstract：:The gene for vimentin, an intermediate-filament protein, is growth regulated. We used Southern blot analysis and in situ chromosome hybridization to determine the location of the human vimentin gene. Our results show that there is only one copy of the vimentin gene and that it is located on the short arm of chromosome...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1987-10-01 00:00:00
