Abstract：
:Unbalanced Robertsonian translocations are a significant cause of mental retardation and fetal wastage. The majority of homologous rearrangements of chromosome 21 in Down syndrome have been shown to be isochromosomes. Aside from chromosome 21, very little is known about other acrocentric homologous rearrangements. In this study, four cases of de novo secondary trisomy 13 are presented. FISH using alpha-satellite sequences, rDNA, and a pTRI-6 satellite I sequence specific to the short arm of chromosome 13 showed all four rearrangements to be dicentric and apparently devoid of ribosomal genes. Three of four rearrangements retained the pTRI-6 satellite I sequence. Case 1 was the exception, showing a deletion of this sequence in the rearrangement, although both parental chromosomes 13 had strong positive hybridization signals. Eleven microsatellite markers from chromosome 13 were also used to characterize the rearrangements. Of the four possible outcomes, one maternal Robertsonian translocation, two paternal isochromosomes, and one maternal isochromosome were observed. A double recombination was observed in the maternally derived rob(13q13q). No recombination events were detected in any isochromosome. The parental origins and molecular chromosomal structure of these cases are compared with previous studies of de novo acrocentric rearrangements.
journal_name
Am J Hum Genetjournal_title
American journal of human geneticsauthors
Shaffer LG,McCaskill C,Han JY,Choo KH,Cutillo DM,Donnenfeld AE,Weiss L,Van Dyke DLsubject
Has Abstractpub_date
1994-11-01 00:00:00pages
968-74issue
5eissn
0002-9297issn
1537-6605journal_volume
55pub_type
杂志文章abstract：:DNA at the FMR-1 locus was analyzed by Southern blot using probe StB12.3 in an unusual fragile X family with six brothers, three of whom are affected with fragile X to varying degrees, two of whom are nonpenetrant carriers, and one of whom is unaffected. Fragile X chromosome studies, detailed physical examinations, an...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1993-10-01 00:00:00
abstract：:Several spin-label electron paramagnetic resonance (EPR) studies of red cell membranes appear to show abnormalities in some Huntington disease (HD) patients, but not in others. Both studies measure the W/S ratios, presumably under similar conditions, but have different results. We have studied the W/S ratio in some de...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1982-05-01 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：: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：:Miller-Dieker syndrome (MDS), a disorder manifesting the severe brain malformation lissencephaly ("smooth brain"), is caused, in the majority of cases, by a chromosomal microdeletion of the distal short arm of chromosome 17. Using human chromosome 17-specific DNA probes, we have begun a molecular dissection of the cri...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1988-11-01 00:00:00
abstract：:Autoimmune polyendocrinopathy type 1 (APS1) is an autosomal recessive disorder characterized by autoimmune hypoparathyroidism, autoimmune adrenocortical failure, and mucocutaneous candidiasis. Recently, an autoimmune regulator gene (AIRE-1), which is located on chromosome 21q22.3, has been identified, and mutations in...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/302145
更新日期：1998-12-01 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：:Patients with dyskeratosis congenita (DC), a heterogeneous inherited bone marrow failure syndrome, have abnormalities in telomere biology, including very short telomeres and germline mutations in DKC1, TERC, TERT, or NOP10, but approximately 60% of DC patients lack an identifiable mutation. With the very short telomer...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2007.10.004
更新日期：2008-02-01 00:00:00
abstract：:Osteogenesis imperfecta (OI) is a heterogenous group of genetic disorders of bone fragility. OI type V is an autosomal-dominant disease characterized by calcification of the forearm interosseous membrane, radial head dislocation, a subphyseal metaphyseal radiodense line, and hyperplastic callus formation; the causativ...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2012.06.005
更新日期：2012-08-10 00:00:00
abstract：:Obesity is an increasingly serious health problem in the world. Body mass index (BMI), percentage fat mass, and body fat mass are important indices of obesity. For a sample of pedigrees that contains >10,000 relative pairs (including 1,249 sib pairs) that are useful for linkage analyses, we performed a whole-genome li...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/339934
更新日期：2002-05-01 00:00:00
abstract：:Cellular DNAs from a panel of 20 unrelated individuals were screened for restriction fragment length polymorphisms (RFLP) with a DNA probe containing the first exon of the proopiomelanocortin gene (POMC), which has been assigned to chromosome 2p23-25. Digestion with the restriction endonuclease Sst 1 revealed a high f...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1983-11-01 00:00:00
abstract：:To resolve the phylogeny of the autochthonous mitochondrial DNA (mtDNA) haplogroups of India and determine the relationship between the Indian and western Eurasian mtDNA pools more precisely, a diverse subset of 75 macrohaplogroup N lineages was chosen for complete sequencing from a collection of >800 control-region s...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/425871
更新日期：2004-12-01 00:00:00
abstract：:CHARGE syndrome is a well-established multiple-malformation syndrome with distinctive consensus diagnostic criteria. Characteristic associated anomalies include ocular coloboma, choanal atresia, cranial nerve defects, distinctive external and inner ear abnormalities, hearing loss, cardiovascular malformations, urogeni...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/500273
更新日期：2006-02-01 00:00:00
abstract：:Restless legs syndrome (RLS) is a common neurological disorder that affects 5%-12% of all whites. To genetically dissect this complex disease, we characterized 15 large and extended multiplex pedigrees, consisting of 453 subjects (134 affected with RLS). A familial aggregation analysis was performed, and SAGE FCOR was...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/420772
更新日期：2004-05-01 00:00:00
abstract：:The Huntington disease (HD) gene has been mapped to the most distal subband of chromosome 4p. Analysis of recombination events has not provided an unequivocal location of the HD gene, but it indicates a position very close to the telomere as one possibility. We have constructed a yeast artificial chromosome (YAC) vect...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1990-04-01 00:00:00
abstract：:Genome-wide association studies (GWASs) have successfully identified thousands of genetic variants for many complex diseases; however, these variants explain only a small fraction of the heritability. Recently, genetic association studies that leverage external transcriptome data have received much attention and shown...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2018.03.019
更新日期：2018-05-03 00:00:00
abstract：:The opportunity raised by recombinant DNA technology to develop a linkage marker panel that spans the human genome requires cost-efficient strategies for its optimal utilization. Questions arise as to whether it is more cost-effective to convert a dimorphic restriction enzyme marker system into a highly polymorphic sy...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1986-07-01 00:00:00
abstract：:Myoclonus-dystonia (M-D) is a movement disorder characterized by rapid muscle contractions and sustained twisting and repetitive movements and has recently been associated with mutations in the epsilon-sarcoglycan gene (SGCE). The mode of inheritance is autosomal dominant with reduced penetrance upon maternal transmis...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/344531
更新日期：2002-12-01 00:00:00
abstract：:Premature ovarian failure (POF) is characterized by elevated gonadotropins and amenorrhea in women aged <40 years. In a Lebanese family with five sisters who received the diagnosis of POF, we established linkage to the long arm of the X chromosome (between Xq21.1 and Xq21.3.3), using whole-genome SNP typing and homozy...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/505406
更新日期：2006-07-01 00:00:00
abstract：:Studies in mouse and chick have shown that the 5' HoxD genes play major roles in the development of the limbs and genitalia. In humans, mutations in HOXD13 cause the dominantly inherited limb malformation synpolydactyly (SPD). Haploinsufficiency for the 5' HOXD genes has recently been proposed to underlie the monodact...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/338921
更新日期：2002-02-01 00:00:00
abstract：:More than 270 million people worldwide have hearing loss that affects normal communication. Although astonishing progress has been made in the identification of more than 50 genes for deafness during the past decade, the majority of deafness genes are yet to be identified. In this study, we mapped a previously unknown...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2010.04.004
更新日期：2010-05-14 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 practicality and moral value of community review of human genetic research has become a focus of debate. Examples from two Native American communities are used to address four aspects of that debate: (1) the value of community review in larger, geographically dispersed populations; (2) the identification of cultur...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/302415
更新日期：1999-06-01 00:00:00
abstract：:The late-infantile-onset forms are the most genetically heterogeneous group among the autosomal recessively inherited neurodegenerative disorders, the neuronal ceroid lipofuscinoses (NCLs). The Turkish variant was initially considered to be a distinct genetic entity, with clinical presentation similar to that of other...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/518902
更新日期：2007-07-01 00:00:00
abstract：:Gilles de la Tourette syndrome (GTS) is characterized by multiple motor and phonic tics and high comorbidity rates with other neurobehavioral disorders. It is hypothesized that frontal-subcortical pathways and a complex genetic background are involved in the etiopathogenesis of the disorder. The genetic basis of GTS r...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/424389
更新日期：2004-10-01 00:00:00
abstract：:We have previously shown that a quantitative-trait locus linked to the OCA2 region of 15q accounts for 74% of variation in human eye color. We conducted additional genotyping to clarify the role of the OCA2 locus in the inheritance of eye color and other pigmentary traits associated with skin-cancer risk in white popu...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/510885
更新日期：2007-02-01 00:00:00
abstract：:Van der Woude syndrome (VWS) is an autosomal dominant disorder in which affected individuals have one or more of the following manifestations: cleft lip, cleft palate, hypodontia, or paramedian lower-lip pits. VWS is a well-characterized example of a single-gene abnormality that disturbs normal craniofacial morphogene...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1990-03-01 00:00:00
abstract：:Association studies are one of the major strategies for identifying genetic factors underlying complex traits. In samples of related individuals, conventional statistical procedures are not valid for testing association, and maximum likelihood (ML) methods have to be used, but they are computationally demanding and ar...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/513895
更新日期：1997-07-01 00:00:00
abstract：:Disordered mitochondrial metabolism may play an important role in a number of idiopathic neurodegenerative disorders. The question of mitochondrial dysfunction is particularly attractive in the case of idiopathic Parkinson disease (PD), since Vyas et al. recognized in the 1980s that the parkinsonism-inducing compound ...
journal_title：American journal of human genetics
pub_type： 杂志文章,评审
doi：10.1086/301812
更新日期：1998-04-01 00:00:00
abstract：:A genetical model is found to provide a good fit to family data on vitiligo. The model postulates that recessive alleles at a set of four unlinked diallelic loci are involved in the causation of the disorder. Under this multiple recessive homozygosis model, for normal X affected families ascertained through the affect...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1988-08-01 00:00:00
