Abstract：
:At least two spontaneous abortions were karyotyped in 273 women during cytogenetic surveys in New York City and Honolulu. These pairs were analyzed using maximum-likelihood logistic-regression analysis to adjust for maternal age and location. There was a significantly increased risk for a chromosomally normal spontaneous abortion after a previous abortion with a normal karyotype. There was no increased risk for trisomy in a second spontaneous abortion following either a previous trisomic abortion or an abortion with another abnormal karyotype. This is unexpected, given the increased risk for trisomy found among live births and at prenatal diagnosis in young women with a previous trisomic birth. The most likely explanation is that the increased recurrence risk for trisomy is restricted to trisomy for only one or a few chromosomes, for reasons such as parental trisomy mosaicism. These data predict no increased risk of chromosome abnormality in future pregnancies after either (1) spontaneous abortions with trisomies of a kind that are always lethal in utero or (2) multiple early abortions in the presence of normal parental karyotypes.
journal_name
Am J Hum Genetjournal_title
American journal of human geneticsauthors
Warburton D,Kline J,Stein Z,Hutzler M,Chin A,Hassold Tsubject
Has Abstractpub_date
1987-09-01 00:00:00pages
465-83issue
3eissn
0002-9297issn
1537-6605journal_volume
41pub_type
杂志文章abstract：:We report here an evaluation of 55 pregnancies at risk for a sickle hemoglobinopathy prenatally diagnosed by restriction-endonuclease analysis, with the endonucleases MstII and HpaI, of amniocyte DNA. The diagnosis was completed in all cases. Eleven fetuses were predicted to be affected, of which six were terminated. ...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1987-06-01 00:00:00
abstract：:The elucidation of the largely unknown transcriptome of small RNAs is crucial for the understanding of genome and cellular function. We report here the results of the analysis of small RNAs (< 50 nt) in the ENCODE regions of the human genome. Size-fractionated RNAs from four different cell lines (HepG2, HelaS3, GM0699...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2008.02.016
更新日期：2008-04-01 00:00:00
abstract：:Although there is considerable evidence for a strong genetic component to idiopathic autism, several genomewide screens for susceptibility genes have been performed with limited concordance of linked loci, reflecting either numerous genes of weak effect and/or sample heterogeneity. Because decreasing sample heterogene...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/320588
更新日期：2001-06-01 00:00:00
abstract：:A patient with lactic acidosis showed a lowered pyruvate dehydrogenase E1 activity and fatigued on slight exercise. The cDNA encoding the pyruvate dehydrogenase E1 alpha-subunit from his lymphocytes, transformed by infection of Epstein-Barr virus, was cloned and sequenced. The nucleotide sequence determination reveale...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1989-03-01 00:00:00
abstract：:Cloned genomic DNA sequences corresponding to various regions of the human type II procollagen gene were used to analyze the DNA from 78 normal volunteers. Southern hybridization experiments detected polymorphic HindIII, BamHI, and EcoRI sites. The presence of the polymorphic HindIII site results in a 7.0-kilobase (kb...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1985-07-01 00:00:00
abstract：:Chromosomal aneuploidy is usually identified by cytogenetic methods. However, for some purposes it would be desirable to have an easier method of recognizing specific trisomies or monosomies. We have devised such an assay. It involves the simultaneous hybridization of two chromosome-specific DNA probes labeled with di...
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：:About 70 individuals from Punjab were examined for some mtDNA polymorphisms, namely, the RFLPs of the six classical enzymes (HpaI, BamHI, HaeII, MspI, AvaII, and Hin-cII) and for the sites AluI(7,025), DdeI(10,394), and AluI(10,397). The AluI(7,025) polymorphic site was also investigated in 96 Indians from Uttar Prade...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1996-10-01 00:00:00
abstract：:Increasing public interest in direct-to-consumer (DTC) genetic ancestry testing has been accompanied by growing concern about issues ranging from the personal and societal implications of the testing to the scientific validity of ancestry inference. The very concept of "ancestry" is subject to misunderstanding in both...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2010.03.011
更新日期：2010-05-14 00:00:00
abstract：:The use of whole-exome and whole-genome sequencing has been a catalyst for a genotype-first approach to diagnostics. Under this paradigm, we have implemented systematic sequencing of neonates and young children with a suspected genetic disorder. Here, we report on two families with recessive mutations in NCAPG2 and ov...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2018.11.017
更新日期：2019-01-03 00:00:00
abstract：:We report on the identification of a 0.3 Mb inherited recurrent but variable copy-number gain at Xq28 in affected males of four unrelated families with X-linked mental retardation (MR). All aberrations segregate with the disease in the families, and the carrier mothers show nonrandom X chromosome inactivation. Tiling ...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2009.10.019
更新日期：2009-12-01 00:00:00
abstract：:Dowling-Degos disease (DDD), or reticular pigmented anomaly of the flexures, is a type of rare autosomal-dominant genodermatosis characterized by reticular hyperpigmentation and hypopigmentation of the flexures, such as the neck, axilla, and areas below the breasts and groin, and shows considerable heterogeneity. Loss...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2013.04.022
更新日期：2013-06-06 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
abstract：:Case-control studies compare marker-allele distributions in affected and unaffected individuals, and significant results suggest linkage but may simply reflect population structure. For markers with m alleles (m > or = 2), a McNemar-like statistic, I, estimates the level of population association between marker and di...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1997-03-01 00:00:00
abstract：:The chromosomes of two patients with ring 13 (r13) were studied using high-resolution RBG banding of prometaphase cells. The rings of the two patients differ slightly in breakpoints. Cell with multiple single, double-sized rings, quadruple-sized rings, rod- and ring-shaped fragments, and fragments showing varied state...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1981-03-01 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：: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：:To improve carrier detection and prenatal diagnosis for Duchenne and Becker muscular dystrophy families, we determined allele frequencies and measures of variation for four (dC-dA)n.(dG-dT)n loci identified within a deletion-prone region of the human dystrophin gene. The loci are highly polymorphic, with predicted het...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1991-11-01 00:00:00
abstract：:We studied a group of individuals with elevated urinary excretion of 3-methylglutaconic acid, neutropenia that can develop into leukemia, a neurological phenotype ranging from nonprogressive intellectual disability to a prenatal encephalopathy with progressive brain atrophy, movement disorder, cataracts, and early dea...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2014.12.013
更新日期：2015-02-05 00:00:00
abstract：:Spinal muscular atrophy is a neurodegenerative disorder caused by the deletion or mutation of the survival-of-motor-neuron gene, SMN1. An SMN1 paralog, SMN2, differs by a C-->T transition in exon 7 that causes substantial skipping of this exon, such that SMN2 expresses only low levels of functional protein. A better u...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/498853
更新日期：2006-01-01 00:00:00
abstract：:Hypokalemic periodic paralysis (hypoPP) is an autosomal dominant disorder belonging to a group of muscle diseases involving the abnormal function of ion channels. This group of muscle diseases also comprises hyperkalemic periodic paralysis and paramyotonia congenita, both sodium-channel diseases, and myotonia congenit...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1995-02-01 00:00:00
abstract：:Two familial and seven sporadic patients with neurofibromatosis 1-who showed dysmorphism, learning disabilities/mental retardation, and additional signs and carried deletions of the NF1 gene-were investigated by use of a two-step FISH approach to characterize the deletions. With FISH of YAC clones belonging to a 7-Mb ...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/302709
更新日期：2000-01-01 00:00:00
abstract：:The hereditary spastic paraplegias (HSPs) are genetically heterogeneous disorders characterized by progressive lower-extremity weakness and spasticity. The molecular pathogenesis is poorly understood. We report discovery of a dominant negative mutation in the NIPA1 gene in a kindred with autosomal dominant HSP (ADHSP)...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/378817
更新日期：2003-10-01 00:00:00
abstract：:Adolescent idiopathic scoliosis (AIS) is one of the most common orthopedic disorders, affecting up to 4% of schoolchildren worldwide. We studied seven unrelated multiplex families of southern Chinese descent with AIS, consisting of 25 affected members. A genomewide scan with >400 fluorescent microsatellite markers was...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/341607
更新日期：2002-08-01 00:00:00
abstract：:Molecular analysis of the human beta-galactosidase gene revealed six different mutations in 10 of 11 Japanese GM1-gangliosidosis patients. They were the only abnormalities in each allele examined in this study. A 165-nucleotide duplication (positions 1103-1267) was found in two infantile patients, producing an abnorma...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1991-08-01 00:00:00
abstract：:The first hypervariable segment of the human mtDNA control region contains a homopolymeric tract of cytosines between nt 16184 and 16193, interrupted at position 16189 by a thymine, according to the Cambridge reference sequence. A variant commonly found in population screening is a T-to-C transition at nt 16189, resul...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1995-08-01 00:00:00
abstract：:Craniofrontonasal syndrome (CFNS) is an X-linked disorder that exhibits a paradoxical sex reversal in phenotypic severity: females characteristically have frontonasal dysplasia, craniosynostosis, and additional minor malformations, but males are usually mildly affected with hypertelorism only. Despite this, males appe...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/504440
更新日期：2006-06-01 00:00:00
abstract：:We have evaluated eight patients with pigmentary anomalies reminiscent of incontinentia pigmenti or hypomelanosis of Ito. All demonstrated abnormal lymphocyte karyotypes with chromosomal mosaicism in lymphocytes and/or skin fibroblasts. In seven the skin was darkly pigmented, and in all of these seven cases the abnorm...
journal_title：American journal of human genetics
pub_type： 杂志文章,评审
doi：
更新日期：1989-08-01 00:00:00
abstract：:Now that the cystic fibrosis (CF) gene has been identified, direct genetic testing for this disorder is available. The current lack of precision has generated a controversy concerning whether population screening is advisable. However, there is general agreement that testing for CF carriers should be offered to CF-aff...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1995-08-01 00:00:00
abstract：:Structural variations are among the most frequent interindividual genetic differences in the human genome. The frequency and distribution of de novo somatic structural variants in normal cells is, however, poorly explored. Using age-stratified cohorts of 318 monozygotic (MZ) twins and 296 single-born subjects, we desc...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2011.12.009
更新日期：2012-02-10 00:00:00
abstract：:In a study of 908 males from Europe, northern Africa, and western Asia, the variation of four Y-linked dinucleotide microsatellites was analyzed within three "frames" that are defined by mutations that are nonrecurrent, or nearly so. The rapid generation and extinction of new dinucleotide length variants causes the ha...
journal_title：American journal of human genetics
pub_type： 杂志文章,多中心研究
doi：10.1086/301999
更新日期：1998-09-01 00:00:00
