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 heterogeneity would increase the power to identify genes, the effect on evidence for linkage of restricting a sample of autism-affected relative pairs to those with delayed onset (at age >36 mo) of phrase speech (PSD, for phrase speech delay) was studied. In the second stage of a two-stage genome screen for susceptibility loci involving 95 families with two or more individuals with autism or related disorders, a maximal multipoint heterogeneity LOD score (HLOD) of 1.96 and a maximal multipoint nonparametric linkage (NPL) score of 2.39 was seen on chromosome 2q. Restricting the analysis to the subset of families (n=49) with two or more individuals having a narrow diagnosis of autism and PSD generated a maximal multipoint HLOD score of 2.99 and an NPL score of 3.32. The increased scores in the restricted sample, together with evidence for heterogeneity in the entire sample, indicate that the restricted sample comprises a population that is more genetically homogeneous, which could therefore increase the likelihood of positional cloning of susceptibility loci.
journal_name
Am J Hum Genetjournal_title
American journal of human geneticsauthors
Buxbaum JD,Silverman JM,Smith CJ,Kilifarski M,Reichert J,Hollander E,Lawlor BA,Fitzgerald M,Greenberg DA,Davis KLdoi
10.1086/320588subject
Has Abstractpub_date
2001-06-01 00:00:00pages
1514-20issue
6eissn
0002-9297issn
1537-6605pii
S0002-9297(07)61063-5journal_volume
68pub_type
杂志文章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：:Gap junctions are assemblies of intercellular channels that regulate a variety of physiologic and developmental processes through the exchange of small ions and signaling molecules. These channels consist of connexin family proteins that allow for diversity of channel composition and conductance properties. The human ...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/346090
更新日期：2003-02-01 00:00:00
abstract：:Treacher Collins syndrome (TCS) is an autosomal dominant disorder of craniofacial development, the features of which include conductive hearing loss and cleft palate. The TCS locus has been mapped to human chromosome 5q31.3-32 and the mutated gene identified. In the current investigation, 25 previously undescribed mut...
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：:We report here the characterization of a large Chinese family with maternally transmitted aminoglycoside-induced and nonsyndromic deafness. In the absence of aminoglycosides, some matrilineal relatives in this family exhibited late-onset/progressive deafness, with a wide range of severity and age at onset. Notably, th...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/381133
更新日期：2004-01-01 00:00:00
abstract：:Activating mutations in the genes for fibroblast growth factor receptors 1-3 (FGFR1-3) are responsible for a diverse group of skeletal disorders. In general, mutations in FGFR1 and FGFR2 cause the majority of syndromes involving craniosynostosis, whereas the dwarfing syndromes are largely associated with FGFR3 mutatio...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/427956
更新日期：2005-02-01 00:00:00
abstract：:Nemaline myopathy (NM) is a clinically and genetically heterogeneous disorder characterized by muscle weakness and the presence of nemaline bodies (rods) in skeletal muscle. Disease-causing mutations have been reported in five genes, each encoding a protein component of the sarcomeric thin filament. Recently, we ident...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/320605
更新日期：2001-06-01 00:00:00
abstract：:A proband, clinically thought to have trisomy 10p, was found to have an inverted duplication of 10p [46, XY, inv dup(10)(qter----p15.3::p15.3----p 11.1:)]. The phenotypic findings and cytogenetic observations were supported by relevant biochemical studies. The activity of phosphofructokinase (platelet-type; PFKP), pre...
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：:A girl with a prenatal 46,XY karyotype was born with a completely normal female phenotype, including uterus and histologically normal ovaries. In mice with a similar phenotype, the ablation of M33, an ortholog of Drosophila Polycomb, causes male-to-female sex reversal. The analysis of the human homolog of M33, Chromob...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2009.03.016
更新日期：2009-05-01 00:00:00
abstract：:The distribution of HLA antigens in a sample of 124 Chagas serologically positive Chilean individuals was studied. The sample was subdivided according to the presence or absence of chagasic cardiomyopathy, in order to search for genetic differences associated with this pathological condition. The frequency of antigen ...
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：:The highly polymorphic locus D2S3 is revealed by three single-copy probes from cosmid C1-5. These probes, 1-30, 1-32, and 2-96, collectively reveal seven restriction fragment length polymorphisms. Fifty-three of 56 unrelated individuals (93%) were heterozygous at one or more of the seven loci, making the compound locu...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1986-03-01 00:00:00
abstract：:Recently, Schork et al. found that two-trait-locus, two-marker-locus (parametric) linkage analysis can provide substantially more linkage information than can standard one-trait-locus, one-marker-locus methods. However, because of the increased burden of computation, Schork et al. do not expect that their approach wil...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1994-11-01 00:00:00
abstract：:Mitochondrial genetics is complicated by heteroplasmy, or mutant load, which may be from 1%-99%, and thus may produce a gene dosage-type effect. Limited data are available for genotype/phenotype correlations in disorders caused by mtDNA mutations; therefore, prenatal diagnosis for mtDNA mutations has been hindered by ...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/302488
更新日期：1999-08-01 00:00:00
abstract：:Colorectal cancer (CRC) heritability has been estimated to be around 30%. However, mutations in the known CRC-susceptibility genes explain CRC risk in fewer than 10% of affected individuals. Germline mutations in DNA-repair genes (DRGs) have recently been reported in CRC, but their contribution to CRC risk is largely ...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2018.01.018
更新日期：2018-03-01 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：:Early-onset epileptic encephalopathy (EOEE) represents a heterogeneous group of severe disorders characterized by seizures, interictal epileptiform activity with a disorganized electroencephalography background, developmental regression or retardation, and onset before 1 year of age. Among a cohort of 57 individuals w...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2016.10.009
更新日期：2016-12-01 00:00:00
abstract：:The numbers of progeny born to 355 patients with heritable polyposis of the colon and to 315 related, but normal, subjects, all old enough to have completed their families, are presented, as well as data on 432 subjects still young enough to have more children. Two main indices are used: mean family size ("genetic fit...
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 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：:Arthrogryposis multiplex congenita (AMC) is characterized by the presence of multiple joint contractures resulting from reduced or absent fetal movement. Here, we report two unrelated families affected by lethal AMC. By genetic mapping and whole-exome sequencing in a multiplex family, a heterozygous truncating MAGEL2 ...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2015.08.010
更新日期：2015-10-01 00:00:00
abstract：:Studies of adult female carriers of the fragile X chromosome indicate that certain psychological problems occur with a greater frequency and severity than expected. This study examines the association of parental origin of the fragile X chromosome and of fragility detected in the karyotype with measures of social, edu...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1989-11-01 00:00:00
abstract：:X-linked retinitis pigmentosa (XLRP) is a clinically and genetically heterogeneous degenerative disease of the retina. At least five loci have been mapped for XLRP; of these, RP2 and RP3 account for 10%-20% and 70%-90% of genetically identifiable disease, respectively. However, mutations in the respective genes, RP2 a...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/340848
更新日期：2002-06-01 00:00:00
abstract：:Urinary voiding dysfunction in childhood, manifesting as incontinence, dysuria, and urinary frequency, is a common condition. Urofacial syndrome (UFS) is a rare autosomal recessive disease characterized by facial grimacing when attempting to smile and failure of the urinary bladder to void completely despite a lack of...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2010.05.006
更新日期：2010-06-11 00:00:00
abstract：:Isolated complex I deficiency is a common biochemical phenotype observed in pediatric mitochondrial disease and often arises as a consequence of pathogenic variants affecting one of the ∼65 genes encoding the complex I structural subunits or assembly factors. Such genetic heterogeneity means that application of next-g...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2018.08.013
更新日期：2018-10-04 00:00:00
abstract：:Attention-deficit/hyperactivity disorder (ADHD) is the most commonly diagnosed behavioral disorder in childhood and likely represents an extreme of normal behavior. ADHD significantly impacts learning in school-age children and leads to impaired functioning throughout the life span. There is strong evidence for a gene...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1086/342732
更新日期：2002-10-01 00:00:00
abstract：:There are three endogamous subdivisions of the Hutterite population, a North American religious isolate. These individuals live on communal farms, and residence is strictly patrilocal. We report on the distributions of HLA-A and B alleles and haplotypes in 203 married women from one subdivision--the Dariusleut--in Alb...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1980-03-01 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：:Phenotypes are rarely consistent across genetic backgrounds and environments, but instead vary in many ways depending on allelic variants, unlinked genes, epigenetic factors, and environmental exposures. In the extreme, individuals carrying the same causal DNA sequence variant but on different backgrounds can be class...
journal_title：American journal of human genetics
pub_type： 杂志文章,评审
doi：10.1016/j.ajhg.2017.06.004
更新日期：2017-08-03 00:00:00
abstract：:Tyrosinase-positive oculocutaneous albinism (ty-pos OCA) is an autosomal recessive disorder of the melanin pigmentary system. South African ty-pos OCA individuals occur with two distinct phenotypes, with or without darkly pigmented patches (ephelides, or dendritic freckles) on exposed areas of the skin. These phenotyp...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1994-06-01 00:00:00
abstract：:Osteogenesis imperfecta (OI) is a heritable disorder that ranges in severity from death in the perinatal period to an increased lifetime risk of fracture. Mutations in COL1A1 and COL1A2, which encode the chains of type I procollagen, result in dominant forms of OI, and mutations in several other genes result in recess...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2013.02.009
更新日期：2013-04-04 00:00:00
abstract：:Spinal muscular atrophy (SMA) is a common autosomal-recessive motor neuron disease caused by the homozygous loss of the SMN1 gene. A nearly identical gene, SMN2, has been shown to decrease the severity of SMA in a dose-dependent manner. However SMN2 is not the sole phenotypic modifier, because there are discrepant SMA...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：10.1016/j.ajhg.2009.08.002
更新日期：2009-09-01 00:00:00
abstract：:Mucopolysaccharidosis type I (MPS-I) is an autosomal recessive genetic disease caused by a deficiency of the lysosomal glycosidase alpha-L-iduronidase. Hurler (severe), Scheie (mild), and Hurler/Scheie (intermediate) syndromes are clinical subtypes of MPS-I, but it is difficult to distinguish between these subtypes by...
journal_title：American journal of human genetics
pub_type： 杂志文章
doi：
更新日期：1993-11-01 00:00:00
