Publications by authors named "Terrence F Meehan"

Article Synopsis
  • - The study investigates the genetic factors underlying congenital heart disease by screening nearly 3,900 mouse gene mutations for cardiac issues, finding 705 lines with conditions like arrhythmia and myocardial hypertrophy.
  • - Out of these, 486 genes are newly linked to heart dysfunction, including variants of unknown relevance (VUR), with specific mutations in five genes (Casz1, Dnajc18, Pde4dip, Rnf38, Tmem161b) leading to notable structural heart defects.
  • - Using data from the UK Biobank, the research further confirms the role of the DNAJC18 gene in heart function, highlighting its loss as linked to changes in cardiac performance, thus identifying new potential targets for understanding
View Article and Find Full Text PDF

The International Mouse Phenotyping Consortium reports the generation of new mouse mutant strains for over 5,000 genes, including 2,850 novel null, 2,987 novel conditional- ready, and 4,433 novel reporter alleles.

View Article and Find Full Text PDF

Reproducibility in the statistical analyses of data from high-throughput phenotyping screens requires a robust and reliable analysis foundation that allows modelling of different possible statistical scenarios. Regular challenges are scalability and extensibility of the analysis software. In this manuscript, we describe OpenStats, a freely available software package that addresses these challenges.

View Article and Find Full Text PDF

The genetic landscape of diseases associated with changes in bone mineral density (BMD), such as osteoporosis, is only partially understood. Here, we explored data from 3,823 mutant mouse strains for BMD, a measure that is frequently altered in a range of bone pathologies, including osteoporosis. A total of 200 genes were found to significantly affect BMD.

View Article and Find Full Text PDF

The identification of causal variants in sequencing studies remains a considerable challenge that can be partially addressed by new gene-specific knowledge. Here, we integrate measures of how essential a gene is to supporting life, as inferred from viability and phenotyping screens performed on knockout mice by the International Mouse Phenotyping Consortium and essentiality screens carried out on human cell lines. We propose a cross-species gene classification across the Full Spectrum of Intolerance to Loss-of-function (FUSIL) and demonstrate that genes in five mutually exclusive FUSIL categories have differing biological properties.

View Article and Find Full Text PDF
Article Synopsis
  • Developed a high-density mouse immunophenotyping platform that enables extensive genetic screening to study immune variation.
  • Identified 140 unique gene knockouts linked to immune response, with many genes not previously associated with immunity.
  • Revealed complex interactions between immune traits and physiological characteristics, highlighting how genetics impacts immune function and health.
View Article and Find Full Text PDF
Article Synopsis
  • High-throughput phenomic projects often deal with complex data from various treatment and control groups, which can complicate analyses due to variations over time, necessitating a method to effectively use local controls to enhance analytic accuracy.
  • The authors present 'soft windowing', a method that assigns weighted importance to control data based on their proximity in time to mutant data, leading to reduced false positives (10%) in analyses and increased significant P-values (30%).
  • This method is implemented in an R package called SmoothWin, which is publicly accessible and can also be applied to large-scale human phenomic studies such as the UK Biobank.
View Article and Find Full Text PDF
Know Thy PDX Model.

Cancer Res

September 2019

Patient-derived tumor xenograft (PDX) models are frequently used to study cancer mechanisms and potential therapeutics, however, differences in tumor evolution between models and patients have called into question their clinical relevance. In this issue, Mer and colleagues describe the Xenograft Visualization and Analysis (Xeva) software tool that empowers pharmacogenomic analysis through integration of PDX model tumor-drug response with genetic data. By performing the largest PDX model meta-analysis of its kind, the authors demonstrate PDX models are robust platforms for cancer treatment studies.

View Article and Find Full Text PDF
Article Synopsis
  • The text refers to a correction made to a previously published article with the DOI: 10.1038/s42003-018-0226-0.
  • The correction is likely important for ensuring the accuracy and integrity of the research findings presented in the original article.
  • Readers are encouraged to check the corrected version for updated information that may affect the conclusions or interpretations of the study.
View Article and Find Full Text PDF
Article Synopsis
  • Advances in next generation sequencing have made it easier to study genetics, but understanding genetic causes of eye diseases is still tough due to cost and limited access to human genetic data.
  • The International Mouse Phenotyping Consortium conducted a study evaluating 4,364 genes and found that 347 of them affect eye traits, with 75% being previously unknown in eye disease research.
  • This significant increase in known genes related to eye conditions could have future implications for understanding eye development and diseases in humans.
View Article and Find Full Text PDF

Patient-derived tumor xenograft (PDX) mouse models are a versatile oncology research platform for studying tumor biology and for testing chemotherapeutic approaches tailored to genomic characteristics of individual patients' tumors. PDX models are generated and distributed by a diverse group of academic labs, multi-institution consortia and contract research organizations. The distributed nature of PDX repositories and the use of different metadata standards for describing model characteristics presents a significant challenge to identifying PDX models relevant to specific cancer research questions.

View Article and Find Full Text PDF

The International Mouse Phenotyping Consortium (IMPC) is building a catalogue of mammalian gene function by producing and phenotyping a knockout mouse line for every protein-coding gene. To date, the IMPC has generated and characterised 5186 mutant lines. One-third of the lines have been found to be non-viable and over 300 new mouse models of human disease have been identified thus far.

View Article and Find Full Text PDF

We are entering a new era of mouse phenomics, driven by large-scale and economical generation of mouse mutants coupled with increasingly sophisticated and comprehensive phenotyping. These studies are generating large, multidimensional gene-phenotype data sets, which are shedding new light on the mammalian genome landscape and revealing many hitherto unknown features of mammalian gene function. Moreover, these phenome resources provide a wealth of disease models and can be integrated with human genomics data as a powerful approach for the interpretation of human genetic variation and its relationship to disease.

View Article and Find Full Text PDF

A large proportion of biomedical research and the development of therapeutics is focused on a small fraction of the human genome. In a strategic effort to map the knowledge gaps around proteins encoded by the human genome and to promote the exploration of currently understudied, but potentially druggable, proteins, the US National Institutes of Health launched the Illuminating the Druggable Genome (IDG) initiative in 2014. In this article, we discuss how the systematic collection and processing of a wide array of genomic, proteomic, chemical and disease-related resource data by the IDG Knowledge Management Center have enabled the development of evidence-based criteria for tracking the target development level (TDL) of human proteins, which indicates a substantial knowledge deficit for approximately one out of three proteins in the human proteome.

View Article and Find Full Text PDF

Metabolic diseases are a worldwide problem but the underlying genetic factors and their relevance to metabolic disease remain incompletely understood. Genome-wide research is needed to characterize so-far unannotated mammalian metabolic genes. Here, we generate and analyze metabolic phenotypic data of 2016 knockout mouse strains under the aegis of the International Mouse Phenotyping Consortium (IMPC) and find 974 gene knockouts with strong metabolic phenotypes.

View Article and Find Full Text PDF

Patient-derived tumor xenograft (PDX) mouse models have emerged as an important oncology research platform to study tumor evolution, mechanisms of drug response and resistance, and tailoring chemotherapeutic approaches for individual patients. The lack of robust standards for reporting on PDX models has hampered the ability of researchers to find relevant PDX models and associated data. Here we present the PDX models minimal information standard (PDX-MI) for reporting on the generation, quality assurance, and use of PDX models.

View Article and Find Full Text PDF
Article Synopsis
  • The auditory system's complexity is linked to over 150 gene loci in humans and more than 400 genetic syndromes featuring hearing loss.
  • The study, conducted by the International Mouse Phenotyping Consortium, screened 3006 mouse knockout strains and discovered 67 candidate genes for hearing loss.
  • Out of these, 52 were new candidates, highlighting a significant gap in understanding the genetics of auditory dysfunction.
View Article and Find Full Text PDF

The role of sex in biomedical studies has often been overlooked, despite evidence of sexually dimorphic effects in some biological studies. Here, we used high-throughput phenotype data from 14,250 wildtype and 40,192 mutant mice (representing 2,186 knockout lines), analysed for up to 234 traits, and found a large proportion of mammalian traits both in wildtype and mutants are influenced by sex. This result has implications for interpreting disease phenotypes in animal models and humans.

View Article and Find Full Text PDF

Although next-generation sequencing has revolutionized the ability to associate variants with human diseases, diagnostic rates and development of new therapies are still limited by a lack of knowledge of the functions and pathobiological mechanisms of most genes. To address this challenge, the International Mouse Phenotyping Consortium is creating a genome- and phenome-wide catalog of gene function by characterizing new knockout-mouse strains across diverse biological systems through a broad set of standardized phenotyping tests. All mice will be readily available to the biomedical community.

View Article and Find Full Text PDF

Approximately one-third of all mammalian genes are essential for life. Phenotypes resulting from knockouts of these genes in mice have provided tremendous insight into gene function and congenital disorders. As part of the International Mouse Phenotyping Consortium effort to generate and phenotypically characterize 5,000 knockout mouse lines, here we identify 410 lethal genes during the production of the first 1,751 unique gene knockouts.

View Article and Find Full Text PDF

Background: The Cell Ontology (CL) is an OBO Foundry candidate ontology covering the domain of canonical, natural biological cell types. Since its inception in 2005, the CL has undergone multiple rounds of revision and expansion, most notably in its representation of hematopoietic cells. For in vivo cells, the CL focuses on vertebrates but provides general classes that can be used for other metazoans, which can be subtyped in species-specific ontologies.

View Article and Find Full Text PDF