Abstract:
:Functional and genomic approaches can be integrated to screen efficiently for pathogenic alleles in founder populations. We applied such approaches to analysis of the cancer-associated cell cycle regulator CHEK2 in the Ashkenazi Jewish population. We first identified two extended haplotypes at CHEK2 that co-segregated with breast cancer in high-risk families. We sequenced CHEK2 in a case representing each haplotype and discovered two novel amino acid substitutions, CHEK2.S428F in the kinase domain and CHEK2.P85L in the N-terminal region. To assay these alleles for loss of CHEK2 function, we tested their capacity to complement Rad53 deletion in Saccharomyces cerevisiae. CHEK2.S428F failed to complement Rad53 and thus largely abrogates normal CHEK2 function, whereas CHEK2.P85L complemented Rad53 as well as did wild-type CHEK2. Epidemiologic analyses were concordant with the functional tests. Frequencies of CHEK2.S428F heterozygotes were 2.88% (47/1632) among female breast cancer patients not selected for family history or age at diagnosis and 1.37% (23/1673) among controls (OR=2.13, 95% CI [1.26, 3.69], P=0.004), whereas frequencies of CHEK2.P85L were 0.92% among cases and 0.83% among controls. On the basis of the experience of mothers, sisters and daughters of probands, breast cancer risk due to CHEK2.S428F was estimated as 0.17 (+/-0.08) by age 60. We conclude that CHEK2.S428F increases breast cancer risk approximately 2-fold among Ashkenazi Jewish women, whereas CHEK2.P85L is a neutral allele. In general, these results suggest that selecting probands with extended haplotypes that co-segregate with disease can improve the efficiency of resequencing efforts and that quantitative complementation tests in yeast can be used to evaluate variants in genes with highly conserved function.
journal_name
Hum Mol Genetjournal_title
Human molecular geneticsauthors
Shaag A,Walsh T,Renbaum P,Kirchhoff T,Nafa K,Shiovitz S,Mandell JB,Welcsh P,Lee MK,Ellis N,Offit K,Levy-Lahad E,King MCdoi
10.1093/hmg/ddi052subject
Has Abstractpub_date
2005-02-15 00:00:00pages
555-63issue
4eissn
0964-6906issn
1460-2083pii
ddi052journal_volume
14pub_type
杂志文章abstract::We have used the direct cDNA screening protocol to identify sequences transcribed in cerebral cortex from a reference library of human Xq28. To derive coding sequences from these genomic clones, we first identified fragments containing transcribed sequences and subjected these to exon trapping or to partial sequencing...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/3.11.2019
更新日期:1994-11-01 00:00:00
abstract::Genetic variants in one-carbon folate metabolism have been identified as risk factors for disease because they may impair the production or use of one-carbon folates required for nucleotide synthesis and methylation. p.R653Q (1958G>A) is a single-nucleotide polymorphism (SNP) in the 10-formyltetrahydrofolate (formylTH...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddt223
更新日期:2013-09-15 00:00:00
abstract::The protein ataxin-3 (ATX3) triggers an amyloid-related neurodegenerative disease when its polyglutamine stretch is expanded beyond a critical threshold. We formerly demonstrated that the polyphenol epigallocatechin-3-gallate (EGCG) could redirect amyloid aggregation of a full-length, expanded ATX3 (ATX3-Q55) towards ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddx211
更新日期:2017-09-01 00:00:00
abstract::Multiple endocrine neoplasia type 2 (MEN 2) is a dominantly inherited cancer syndrome which affects thyroid C cells, and with variable frequency, the adrenal medulla, parathyroid and enteric autonomic ganglia. The syndrome is due to germline mutation in the receptor tyrosine kinase gene, RET. We have recently shown an...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/3.10.1771
更新日期:1994-10-01 00:00:00
abstract::Congenital vertebral malformations (CVMs) are associated with human TBX6 compound inheritance that combines a rare null allele and a common hypomorphic allele at the TBX6 locus. Our previous in vitro evidence suggested that this compound inheritance resulted in a TBX6 gene dosage of less than haploinsufficiency (i.e. ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddy358
更新日期:2019-02-15 00:00:00
abstract::Biased segregation of mitochondrial DNA variants has been widely documented, but little was known about its molecular basis. We set out to test the hypothesis that altering the balance between mitochondrial fusion and fission could influence the segregation of mutant and wild-type mtDNA variants, because it would modi...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddp281
更新日期:2009-09-15 00:00:00
abstract::Peroxisome biogenesis disorders, including Zellweger syndrome (ZS), neonatal adrenoleukodystrophy (NALD) and infantile Refsum disease, are lethal hereditary diseases caused by abnormalities in peroxisomal assembly. To date, 12 genotypes have been identified. We now have evidence that the complete human cDNA encoding P...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/8.6.1077
更新日期:1999-06-01 00:00:00
abstract::Mutations in the gene encoding the inner nuclear membrane proteins lamins A and C produce cardiac and skeletal muscle dysfunction referred to as Emery Dreifuss muscular dystrophy. Lamins A and C participate in the LINC complex that, along with the nesprin and SUN proteins, LInk the Nucleoskeleton with the Cytoskeleton...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddn386
更新日期:2009-02-15 00:00:00
abstract::Hirschsprung disease (HSCR) is a frequent neurocristopathy characterized by the absence of submucosal and myenteric plexuses in a variable length of the gastrointestinal tract. Pedigrees and segregation analyses suggested the involvement of one or several dominant genes with low penetrance in HSCR. Considering that RE...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/7.9.1449
更新日期:1998-09-01 00:00:00
abstract::Plasmalogens, the most prominent ether (phospho)lipids in mammals, are structural components of most cellular membranes. Due to their physicochemical properties and abundance in the central nervous system, a role of plasmalogens in neurotransmission has been proposed, but conclusive data are lacking. Here, we targeted...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddz040
更新日期:2019-06-15 00:00:00
abstract::The human gene HIC1 (hypermethylated in cancer) maps to chromosome 17p13.3 and is deleted in the contiguous gene disorder Miller-Dieker syndrome (MDS) [Makos-Wales et al. (1995) Nature Med., 1, 570-577; Chong et al. (1996) Genome Res., 6, 735-741]. We isolated the murine homologue Hic1, encoding a zinc-finger protein ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/8.4.697
更新日期:1999-04-01 00:00:00
abstract::Cytochrome c oxidase (COX) defects are found in a clinically and genetically heterogeneous group of mitochondrial disorders. To date, mutations in only two nuclear genes causing COX deficiency have been described. We report here a genetic linkage study of a consanguineous family with an isolated COX defect and subsequ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/9.8.1245
更新日期:2000-05-01 00:00:00
abstract::LKB1 is a serine/threonine kinase which is inactivated by mutation in the Peutz-Jeghers polyposis and cancer predisposition syndrome (PJS). We have identified a novel leucine-rich repeat containing protein, LIP1, that interacts with LKB1. The LIP1 gene consists of 25 exons, maps to human chromosome 2q36 and encodes a ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/10.25.2869
更新日期:2001-12-01 00:00:00
abstract::Galphaq, encoded by the human GNAQ gene, is an effector subunit of the Gq heterotrimeric G-protein and the convergence point for signaling of multiple Gq-coupled neurohormonal receptors. To identify naturally occurring mutations that could modify GNAQ transcription, we examined genomic DNA isolated from 355 normal sub...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddm229
更新日期:2007-11-15 00:00:00
abstract::Pheochromocytomas (PCCs) and paragangliomas (PGLs) are chromaffin-cell tumors that arise from the adrenal medulla and extra-adrenal paraganglia, respectively. The dysfunction of genes involved in the cellular response to hypoxia, such as VHL, EGL nine homolog 1, and the succinate dehydrogenase (SDH) genes, leads to a ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddt069
更新日期:2013-06-01 00:00:00
abstract::Several studies have shown that testis-specific gene antigen (TSGA10) could be considered as a cancer testis antigen (CTA), except for one study which has identified it as a tumor suppressor gene. In order to exert its function, TSGA10 interacts closely with hypoxia inducible factor (HIF-1α) and since this interaction...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddv461
更新日期:2016-01-15 00:00:00
abstract::Trichothiodystrophy (TTD) is a rare autosomal recessive disorder characterized by brittle hair and also associated with various systemic symptoms. Approximately half of TTD patients exhibit photosensitivity, resulting from the defect in the nucleotide excision repair. Photosensitive TTD is due to mutations in three ge...
journal_title:Human molecular genetics
pub_type: 杂志文章,评审
doi:10.1093/hmg/ddp390
更新日期:2009-10-15 00:00:00
abstract::Primary open-angle glaucoma (POAG) is a complex disease with unknown causes. However, in the past decade, POAG has been linked to six chromosomal regions, of which the gene MYOC encoding myocilin and the gene OPTN encoding optineurin have been identified to harbor causal mutations (disease-causing variants, DCV). POAG...
journal_title:Human molecular genetics
pub_type: 杂志文章,评审
doi:10.1093/hmg/ddh074
更新日期:2004-04-01 00:00:00
abstract::Skin color is a highly heritable human trait, and global variation in skin pigmentation has been shaped by natural selection, migration, and admixture. Ethnically diverse African populations harbor extremely high levels of genetic and phenotypic diversity, and skin pigmentation varies widely across Africa. Recent geno...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddab007
更新日期:2021-01-12 00:00:00
abstract::Bardet-Biedl syndrome (BBS) is an autosomal recessive ciliopathy with multisystem involvement. So far, 18 BBS genes have been identified and the majority of them are essential for the function of BBSome, a protein complex involved in transporting membrane proteins into and from cilia. Yet defects in the identified gen...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddu044
更新日期:2014-06-15 00:00:00
abstract::Gaucher disease, a prevalent lysosomal storage disease (LSD), is caused by insufficient activity of acid β-glucosidase (GCase) and the resultant glucosylceramide (GC)/glucosylsphingosine (GS) accumulation in visceral organs (Type 1) and the central nervous system (Types 2 and 3). Recent clinical and genetic studies im...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddu105
更新日期:2014-08-01 00:00:00
abstract::Meiotic recombination is of fundamental importance in creating haplotype diversity in the human genome and has the potential to cause genomic rearrangements by ectopic recombination between repeat sequences and through other changes triggered by recombination-initiating events. However, the relationship between alleli...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddl025
更新日期:2006-04-01 00:00:00
abstract::Steroid 11 beta-hydroxylase deficiency is the second most common cause of congenital adrenal hyperplasia, the inherited inability to synthesize cortisol. Severely affected patients carry mutations in the CYB11B1 gene that destroy enzymatic activity. Such patients have signs of androgen excess and usually have hyperten...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/6.11.1829
更新日期:1997-10-01 00:00:00
abstract::Recombination, demographic history, drift and selection influence the extent of linkage disequilibrium (LD) in the human genome, but their relative contributions remain unclear. To investigate the effect of meiotic recombination versus population history on LD, three populations with different demographic histories (U...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddg008
更新日期:2003-01-01 00:00:00
abstract::Recent genome-wide association studies (GWAS) have identified a number of novel genetic associations with complex human diseases. In spite of these successes, results from GWAS generally explain only a small proportion of disease heritability, an observation termed the 'missing heritability problem'. Several sources f...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/dds021
更新日期:2012-05-01 00:00:00
abstract::Peroxisomes are vital eukaryotic organelles that participate in lipid metabolism, in particular the metabolism of very-long-chain fatty acids (VLCFA). The biogenesis of peroxisomes is regulated by a set of peroxin proteins (PEX). In humans, mutations affecting peroxin protein production or function result in devastati...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddp518
更新日期:2010-02-01 00:00:00
abstract::Human cytidine deaminase APOBEC3G and the virion infectivity factor (vif) of the human immunodeficiency virus (HIV) are a pair of antagonistic molecules. In the absence of vif, APOBEC3G induces a high rate of dC to dU mutations in the nascent reverse transcripts of HIV that leads to the degradation of the HIV genome. ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddh183
更新日期:2004-08-15 00:00:00
abstract::Manipulation of the mouse genome by site-specific mutagenesis has been extensively used to study gene function and model human disorders. Mouse models of myotubular myopathy (XLMTM), a severe congenital muscular disorder due to loss-of-function mutations in the MTM1 gene, have been generated by homologous recombinatio...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddt038
更新日期:2013-05-01 00:00:00
abstract::Metabolic control of phenylalanine concentrations in body fluids is essential for cognitive development and executive function. The hepatic phenylalanine hydroxylating system is regulated by the ratio of l-phenylalanine, which is substrate of phenylalanine hydroxylase (PAH), to the PAH cofactor tetrahydrobiopterin (BH...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddy079
更新日期:2018-05-15 00:00:00
abstract::The CFTR gene, in which more than 300 mutations have been described, displays a spectrum of mutations which varies according to ethnic and geographic origin of patients. In this paper we report an exhaustive study of the 27 exons and exon/intron boundaries of a sample of 35 CF patients from Bulgaria which is situated ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/3.1.57
更新日期:1994-01-01 00:00:00