Other search tools

About this data

The publication data currently available has been vetted by Vanderbilt faculty, staff, administrators and trainees. The data itself is retrieved directly from NCBI's PubMed and is automatically updated on a weekly basis to ensure accuracy and completeness.

If you have any questions or comments, please contact us.

Results: 1 to 10 of 31

Publication Record

Connections

Pathogenic Germline Variants in 10,389 Adult Cancers.
Huang KL, Mashl RJ, Wu Y, Ritter DI, Wang J, Oh C, Paczkowska M, Reynolds S, Wyczalkowski MA, Oak N, Scott AD, Krassowski M, Cherniack AD, Houlahan KE, Jayasinghe R, Wang LB, Zhou DC, Liu D, Cao S, Kim YW, Koire A, McMichael JF, Hucthagowder V, Kim TB, Hahn A, Wang C, McLellan MD, Al-Mulla F, Johnson KJ, Cancer Genome Atlas Research Network, Lichtarge O, Boutros PC, Raphael B, Lazar AJ, Zhang W, Wendl MC, Govindan R, Jain S, Wheeler D, Kulkarni S, Dipersio JF, Reimand J, Meric-Bernstam F, Chen K, Shmulevich I, Plon SE, Chen F, Ding L
(2018) Cell 173: 355-370.e14
MeSH Terms: DNA Copy Number Variations, Databases, Genetic, Gene Deletion, Gene Frequency, Genetic Predisposition to Disease, Genotype, Germ Cells, Germ-Line Mutation, Humans, Loss of Heterozygosity, Mutation, Missense, Neoplasms, Polymorphism, Single Nucleotide, Proto-Oncogene Proteins c-met, Proto-Oncogene Proteins c-ret, Tumor Suppressor Proteins
Show Abstract · Added October 30, 2019
We conducted the largest investigation of predisposition variants in cancer to date, discovering 853 pathogenic or likely pathogenic variants in 8% of 10,389 cases from 33 cancer types. Twenty-one genes showed single or cross-cancer associations, including novel associations of SDHA in melanoma and PALB2 in stomach adenocarcinoma. The 659 predisposition variants and 18 additional large deletions in tumor suppressors, including ATM, BRCA1, and NF1, showed low gene expression and frequent (43%) loss of heterozygosity or biallelic two-hit events. We also discovered 33 such variants in oncogenes, including missenses in MET, RET, and PTPN11 associated with high gene expression. We nominated 47 additional predisposition variants from prioritized VUSs supported by multiple evidences involving case-control frequency, loss of heterozygosity, expression effect, and co-localization with mutations and modified residues. Our integrative approach links rare predisposition variants to functional consequences, informing future guidelines of variant classification and germline genetic testing in cancer.
Copyright © 2018 The Authors. Published by Elsevier Inc. All rights reserved.
0 Communities
1 Members
0 Resources
MeSH Terms
Genomic and Molecular Landscape of DNA Damage Repair Deficiency across The Cancer Genome Atlas.
Knijnenburg TA, Wang L, Zimmermann MT, Chambwe N, Gao GF, Cherniack AD, Fan H, Shen H, Way GP, Greene CS, Liu Y, Akbani R, Feng B, Donehower LA, Miller C, Shen Y, Karimi M, Chen H, Kim P, Jia P, Shinbrot E, Zhang S, Liu J, Hu H, Bailey MH, Yau C, Wolf D, Zhao Z, Weinstein JN, Li L, Ding L, Mills GB, Laird PW, Wheeler DA, Shmulevich I, Cancer Genome Atlas Research Network, Monnat RJ, Xiao Y, Wang C
(2018) Cell Rep 23: 239-254.e6
MeSH Terms: Cell Line, Tumor, DNA Damage, Gene Silencing, Genome, Human, Humans, Loss of Heterozygosity, Machine Learning, Mutation, Neoplasms, Recombinational DNA Repair, Tumor Suppressor Proteins
Show Abstract · Added October 30, 2019
DNA damage repair (DDR) pathways modulate cancer risk, progression, and therapeutic response. We systematically analyzed somatic alterations to provide a comprehensive view of DDR deficiency across 33 cancer types. Mutations with accompanying loss of heterozygosity were observed in over 1/3 of DDR genes, including TP53 and BRCA1/2. Other prevalent alterations included epigenetic silencing of the direct repair genes EXO5, MGMT, and ALKBH3 in ∼20% of samples. Homologous recombination deficiency (HRD) was present at varying frequency in many cancer types, most notably ovarian cancer. However, in contrast to ovarian cancer, HRD was associated with worse outcomes in several other cancers. Protein structure-based analyses allowed us to predict functional consequences of rare, recurrent DDR mutations. A new machine-learning-based classifier developed from gene expression data allowed us to identify alterations that phenocopy deleterious TP53 mutations. These frequent DDR gene alterations in many human cancers have functional consequences that may determine cancer progression and guide therapy.
Copyright © 2018 The Author(s). Published by Elsevier Inc. All rights reserved.
0 Communities
1 Members
0 Resources
MeSH Terms
Deciphering Elevated Microsatellite Alterations at Selected Tetra/Pentanucleotide Repeats, Microsatellite Instability, and Loss of Heterozygosity in Colorectal Cancers.
Wang Y, Vnencak-Jones CL, Cates JM, Shi C
(2018) J Mol Diagn 20: 366-372
MeSH Terms: Adult, Aged, Aged, 80 and over, Colorectal Neoplasms, Female, Humans, Loss of Heterozygosity, Male, Microsatellite Instability, Microsatellite Repeats, Middle Aged
Show Abstract · Added November 1, 2018
Elevated microsatellite alterations at selected tetranucleotide repeats (EMAST) are common in colorectal cancers (CRCs). The association between EMAST and classic mono/dinucleotide microsatellite instability (MSI) is unknown. We assessed the stability of 13 tetranucleotide and three pentanucleotide repeat markers in tumor and normal tissue from 22 MSI-high and 107 microsatellite-stable CRC samples. When present, instability was observed at tetra/pentanucleotide repeats and was defined as elevated microsatellite alterations at selected tetra/pentanucleotide repeats-high (EMASTP-H; ≥30% instability), -low (EMASTP-L; <30% instability), or -stable (EMASTP-S). EMASTP instability, including high and low, was observed in 50 of 123 CRCs (41%), including all MSI-high tumors and 28 of 101 microsatellite-stable tumors (28%). MSI-high CRCs were more likely to be EMASTP-H compared with microsatellite-stable tumors with EMASTP instability. Tetranucleotide markers VWA and D13S317 were the two most frequently altered loci. Loss of heterozygosity was more common in EMASTP-L/S than in EMASTP-H CRCs. Frequencies of loss of heterozygosity at three loci were different between EMASTP-L and EMASTP-S tumors. In addition, right-sided tumor site, large tumor size, high tumor grade, and the presence of Crohn-like reaction were significantly associated with EMASTP-H CRCs. However, there were no differences in clinicopathologic features between EMASTP-L and EMASTP-S tumors. In summary, more CRCs exhibited genomic instability as EMASTP than as MSI. EMASTP instability may prove to be an important prognostic/therapeutic indicator in CRCs.
Copyright © 2018 American Society for Investigative Pathology and the Association for Molecular Pathology. Published by Elsevier Inc. All rights reserved.
0 Communities
1 Members
0 Resources
11 MeSH Terms
Heterozygous loss of TSC2 alters p53 signaling and human stem cell reprogramming.
Armstrong LC, Westlake G, Snow JP, Cawthon B, Armour E, Bowman AB, Ess KC
(2017) Hum Mol Genet 26: 4629-4641
MeSH Terms: Adolescent, Adult, Alleles, Cellular Reprogramming, Child, Child, Preschool, Female, Fibroblasts, Genes, p53, Heterozygote, Humans, Induced Pluripotent Stem Cells, Infant, Loss of Heterozygosity, Male, Mutation, RNA, Small Interfering, Signal Transduction, TOR Serine-Threonine Kinases, Tuberous Sclerosis, Tuberous Sclerosis Complex 1 Protein, Tuberous Sclerosis Complex 2 Protein, Tumor Suppressor Protein p53, Tumor Suppressor Proteins
Show Abstract · Added April 11, 2018
Tuberous sclerosis complex (TSC) is a pediatric disorder of dysregulated growth and differentiation caused by loss of function mutations in either the TSC1 or TSC2 genes, which regulate mTOR kinase activity. To study aberrations of early development in TSC, we generated induced pluripotent stem cells using dermal fibroblasts obtained from patients with TSC. During validation, we found that stem cells generated from TSC patients had a very high rate of integration of the reprogramming plasmid containing a shRNA against TP53. We also found that loss of one allele of TSC2 in human fibroblasts is sufficient to increase p53 levels and impair stem cell reprogramming. Increased p53 was also observed in TSC2 heterozygous and homozygous mutant human stem cells, suggesting that the interactions between TSC2 and p53 are consistent across cell types and gene dosage. These results support important contributions of TSC2 heterozygous and homozygous mutant cells to the pathogenesis of TSC and the important role of p53 during reprogramming.
© The Author 2017. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.
0 Communities
1 Members
0 Resources
24 MeSH Terms
Loss of heterozygosity at the CYP2D6 locus in breast cancer: implications for germline pharmacogenetic studies.
Goetz MP, Sun JX, Suman VJ, Silva GO, Perou CM, Nakamura Y, Cox NJ, Stephens PJ, Miller VA, Ross JS, Chen D, Safgren SL, Kuffel MJ, Ames MM, Kalari KR, Gomez HL, Gonzalez-Angulo AM, Burgues O, Brauch HB, Ingle JN, Ratain MJ, Yelensky R
(2014) J Natl Cancer Inst 107:
MeSH Terms: Adult, Aged, Antineoplastic Agents, Hormonal, Biomarkers, Tumor, Breast Neoplasms, Cytochrome P-450 CYP2D6, DNA, Neoplasm, Disease-Free Survival, Female, Formaldehyde, Genotype, Humans, Loss of Heterozygosity, Middle Aged, Mouth Mucosa, Paraffin Embedding, Receptor, ErbB-2, Receptors, Estrogen, Survival Analysis, Tamoxifen, Tissue Fixation
Show Abstract · Added February 22, 2016
BACKGROUND - Controversy exists regarding the impact of CYP2D6 genotype on tamoxifen responsiveness. We examined loss of heterozygosity (LOH) at the CYP2D6 locus and determined its impact on genotyping error when tumor tissue is used as a DNA source.
METHODS - Genomic tumor data from the adjuvant and metastatic settings (The Cancer Genome Atlas [TCGA] and Foundation Medicine [FM]) were analyzed to characterize the impact of CYP2D6 copy number alterations (CNAs) and LOH on Hardy Weinberg equilibrium (HWE). Additionally, we analyzed CYP2D6 *4 genotype from formalin-fixed paraffin-embedded (FFPE) tumor blocks containing nonmalignant tissue and buccal (germline) samples from patients on the North Central Cancer Treatment Group (NCCTG) 89-30-52 tamoxifen trial. All statistical tests were two-sided.
RESULTS - In TCGA samples (n =627), the CYP2D6 LOH rate was similar in estrogen receptor (ER)-positive (41.2%) and ER-negative (35.2%) but lower in HER2-positive tumors (15.1%) (P < .001). In FM ER+ samples (n = 290), similar LOH rates were observed (40.8%). In 190 NCCTG samples, the agreement between CYP2D6 genotypes derived from FFPE tumors and FFPE tumors containing nonmalignant tissue was moderate (weighted Kappa = 0.74; 95% CI = 0.63 to 0.84). Comparing CYP2D6 genotypes derived from buccal cells to FFPE tumor DNA, CYP2D6*4 genotype was discordant in six of 31(19.4%). In contrast, there was no disagreement between CYP2D6 genotypes derived from buccal cells with FFPE tumors containing nonmalignant tissue.
CONCLUSIONS - LOH at the CYP2D6 locus is common in breast cancer, resulting in potential misclassification of germline CYP2D6 genotypes. Tumor DNA should not be used to determine germline CYP2D6 genotype without sensitive techniques to detect low frequency alleles and quality control procedures appropriate for somatic DNA.
© The Author 2014. Published by Oxford University Press. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.
0 Communities
1 Members
0 Resources
21 MeSH Terms
Rare complete knockouts in humans: population distribution and significant role in autism spectrum disorders.
Lim ET, Raychaudhuri S, Sanders SJ, Stevens C, Sabo A, MacArthur DG, Neale BM, Kirby A, Ruderfer DM, Fromer M, Lek M, Liu L, Flannick J, Ripke S, Nagaswamy U, Muzny D, Reid JG, Hawes A, Newsham I, Wu Y, Lewis L, Dinh H, Gross S, Wang LS, Lin CF, Valladares O, Gabriel SB, dePristo M, Altshuler DM, Purcell SM, NHLBI Exome Sequencing Project, State MW, Boerwinkle E, Buxbaum JD, Cook EH, Gibbs RA, Schellenberg GD, Sutcliffe JS, Devlin B, Roeder K, Daly MJ
(2013) Neuron 77: 235-42
MeSH Terms: Case-Control Studies, Child Development Disorders, Pervasive, Child, Preschool, Chromosomes, Human, X, Demography, Female, Gene Deletion, Genetic Variation, Homozygote, Humans, Linkage Disequilibrium, Loss of Heterozygosity, Male, Risk Factors
Show Abstract · Added February 20, 2014
To characterize the role of rare complete human knockouts in autism spectrum disorders (ASDs), we identify genes with homozygous or compound heterozygous loss-of-function (LoF) variants (defined as nonsense and essential splice sites) from exome sequencing of 933 cases and 869 controls. We identify a 2-fold increase in complete knockouts of autosomal genes with low rates of LoF variation (≤ 5% frequency) in cases and estimate a 3% contribution to ASD risk by these events, confirming this observation in an independent set of 563 probands and 4,605 controls. Outside the pseudoautosomal regions on the X chromosome, we similarly observe a significant 1.5-fold increase in rare hemizygous knockouts in males, contributing to another 2% of ASDs in males. Taken together, these results provide compelling evidence that rare autosomal and X chromosome complete gene knockouts are important inherited risk factors for ASD.
Copyright © 2013 Elsevier Inc. All rights reserved.
0 Communities
1 Members
0 Resources
14 MeSH Terms
Functional interactions between Lmo2, the Arf tumor suppressor, and Notch1 in murine T-cell malignancies.
Treanor LM, Volanakis EJ, Zhou S, Lu T, Sherr CJ, Sorrentino BP
(2011) Blood 117: 5453-62
MeSH Terms: Adaptor Proteins, Signal Transducing, Animals, Cell Transformation, Neoplastic, Cocarcinogenesis, Cyclin-Dependent Kinase Inhibitor p16, DNA-Binding Proteins, Disease Progression, Female, Gene Expression, LIM Domain Proteins, Loss of Heterozygosity, Male, Metalloproteins, Mice, Mice, Inbred C57BL, Mice, Knockout, Mice, Transgenic, Mutation, Neoplastic Stem Cells, Precursor Cells, T-Lymphoid, Precursor T-Cell Lymphoblastic Leukemia-Lymphoma, Promoter Regions, Genetic, Receptor, Notch1, Signal Transduction
Show Abstract · Added May 27, 2014
LMO2 is a target of chromosomal translocations in T-cell tumors and was activated by retroviral vector insertions in T-cell tumors from X-SCID patients in gene therapy trials. To better understand the cooperating genetic events in LMO2-associated T-cell acute lymphoblastic leukemia (T-ALL), we investigated the roles of Arf tumor suppressor loss and Notch activation in murine models of transplantation. Lmo2 overexpression enhanced the expansion of primitive DN2 thymocytes, eventually facilitating the stochastic induction of clonal CD4(+)/CD8(+) malignancies. Inactivation of the Arf tumor suppressor further increased the self-renewal capacity of the primitive, preleukemic thymocyte pool and accelerated the development of aggressive, Lmo2-induced T-cell lympholeukemias. Notch mutations were frequently detected in these Lmo2-induced tumors. The Arf promoter was not directly engaged by Lmo2 or mutant Notch, and use of a mouse model in which activation of a mutant Notch allele depends on previous engagement of the Arf promoter revealed that Notch activation could occur as a subsequent event in T-cell tumorigenesis. Therefore, Lmo2 cooperates with Arf loss to enhance self-renewal in primitive thymocytes. Notch mutation and Arf inactivation appear to independently cooperate in no requisite order with Lmo2 overexpression in inducing T-ALL, and all 3 events remained insufficient to guarantee immediate tumor development.
0 Communities
1 Members
0 Resources
24 MeSH Terms
Spectrum of LKB1, EGFR, and KRAS mutations in chinese lung adenocarcinomas.
Gao B, Sun Y, Zhang J, Ren Y, Fang R, Han X, Shen L, Liu XY, Pao W, Chen H, Ji H
(2010) J Thorac Oncol 5: 1130-5
MeSH Terms: Adenocarcinoma, Adult, Asian Continental Ancestry Group, DNA, ErbB Receptors, Female, Humans, Loss of Heterozygosity, Lung, Lung Neoplasms, Male, Middle Aged, Mutation, Polymorphism, Genetic, Prognosis, Protein-Serine-Threonine Kinases, Proto-Oncogene Proteins, Proto-Oncogene Proteins p21(ras), RNA, Messenger, Reverse Transcriptase Polymerase Chain Reaction, Survival Rate, ras Proteins
Show Abstract · Added March 24, 2014
INTRODUCTION - Somatic LKB1 mutations are found in lung adenocarcinomas at different frequencies in Caucasian and East Asian (Japanese and Korean) populations. This study was designed to characterize the frequency of LKB1 mutations, their relationship to EGFR and KRAS mutations, and their associated clinicopathologic characteristics in Chinese patients.
METHODS - Two hundred thirty-nine lung adenocarcinomas consecutively collected from October 2007 to July 2009 were dissected into 3 to 4 small (3 mm) pieces for histopathological analyses of tumor content. Genomic DNA and/or cDNA from 86 samples with more than 70% tumor content were used for sequencing of LKB1 (exons 1-9), EGFR (exons 18-21), and KRAS (exon 2). LKB1 germline mutation status was determined by sequencing of genomic DNA from matched histologically distant lung tissues that are histologically normal.
RESULTS - 6.9% of lung adenocarcinomas harbored LKB1 somatic mutations. A total of 10.5% of patients had an LKB1 germline polymorphism, F354L. Interestingly, in two of these patients, tumors displayed loss of heterozygosity at this allele. EGFR kinase domain and KRAS mutations were found in 66.3% and 2.3% of Chinese lung adenocarcinomas, respectively. Concurrent LKB1 and EGFR somatic mutations were observed in one patient. Both KRAS-mutant tumors harbored LKB1 mutations.
CONCLUSIONS - These data provide important clinical and molecular characteristics of lung adenocarcinomas from Chinese patients.
0 Communities
1 Members
0 Resources
22 MeSH Terms
Evidence that inositol polyphosphate 4-phosphatase type II is a tumor suppressor that inhibits PI3K signaling.
Gewinner C, Wang ZC, Richardson A, Teruya-Feldstein J, Etemadmoghadam D, Bowtell D, Barretina J, Lin WM, Rameh L, Salmena L, Pandolfi PP, Cantley LC
(2009) Cancer Cell 16: 115-25
MeSH Terms: Breast Neoplasms, Cell Movement, Cells, Cultured, Cellular Senescence, Female, Humans, Insulin, Loss of Heterozygosity, Ovarian Neoplasms, PTEN Phosphohydrolase, Phosphatidylinositol 3-Kinases, Phosphoric Monoester Hydrolases, Proto-Oncogene Proteins c-akt, Signal Transduction, Substrate Specificity, Tumor Suppressor Proteins
Show Abstract · Added December 10, 2018
We report that knocking down the expression of inositol polyphosphate 4-phosphatase type II (INPP4B) in human epithelial cells, like knockdown of PTEN, resulted in enhanced Akt activation and anchorage-independent growth and enhanced overall motility. In xenograft experiments, overexpression of INPP4B resulted in reduced tumor growth. INPP4B preferentially hydrolyzes phosphatidylinositol-3,4-bisphosphate (PI(3,4)P(2)) with no effect on phosphatidylinositol-3.4.5-triphosphate (PI(3,4,5)P(3)), suggesting that PI(3,4)P(2) and PI(3,4,5)P(3) may cooperate in Akt activation and cell transformation. Dual knockdown of INPP4B and PTEN resulted in cellular senescence. Finally, we found loss of heterozygosity (LOH) at the INPP4B locus in a majority of basal-like breast cancers, as well as in a significant fraction of ovarian cancers, which correlated with lower overall patient survival, suggesting that INPP4B is a tumor suppressor.
0 Communities
1 Members
0 Resources
MeSH Terms
Loss of heterozygosity of succinate dehydrogenase B mutation by direct sequencing in synchronous paragangliomas.
Prasad P, Kant JA, Wills M, O'Leary M, Lovvorn H, Yang E
(2009) Cancer Genet Cytogenet 192: 82-5
MeSH Terms: Adolescent, Base Sequence, DNA Mutational Analysis, Exons, Humans, Loss of Heterozygosity, Male, Molecular Sequence Data, Mutation, Neoplasms, Multiple Primary, Paraganglioma, Extra-Adrenal, Succinate Dehydrogenase, Tomography, X-Ray Computed
Show Abstract · Added January 28, 2014
Extraadrenal pheochromocytomas and paragangliomas are rare entities within the pediatric population. We report the presentation of three synchronous extra-adrenal abdominal paragangliomas in an adolescent boy who carries a germline mutation in the succinate dehydrogenase B (SDHB) gene. Loss of heterozygosity of this allele was demonstrated by direct sequencing of DNA from two of his tumors, confirming loss of tumor suppressor function in the pathogenesis of these paragangliomas.
0 Communities
1 Members
0 Resources
13 MeSH Terms