25 results match your criteria: "Hong Kong Genome Institute[Affiliation]"

UniVar: A variant interpretation platform enhancing rare disease diagnosis through robust filtering and unified analysis of SNV, INDEL, CNV and SV.

Comput Biol Med

February 2025

Hong Kong Genome Institute, Hong Kong Science Park, Shatin, Hong Kong, China; Department of Chemical Pathology, The Chinese University of Hong Kong, Hong Kong, China; Laboratory of Computational Genomics, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China. Electronic address:

Background: Interpreting the pathogenicity of genetic variants associated with rare diseases is a laborious and time-consuming endeavour. To streamline the diagnostic process and lighten the burden of variant interpretation, it is crucial to automate variant annotation and prioritization. Unfortunately, currently available variant interpretation tools lack a unified and comprehensive workflow that can collectively assess the clinical significance of these types of variants together: small nucleotide variants (SNVs), small insertions/deletions (INDELs), copy number variants (CNVs) and structural variants (SVs).

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Deletions and tandem duplications (commonly called CNVs) represent the majority of structural variations in a human genome. They can be identified using short reads, but because they frequently occur in repetitive regions, existing methods fail to detect most of them. This is because CNVs in repetitive regions often do not produce the evidence needed by existing short reads-based callers (split reads, discordant pairs or read depth change).

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Background: The clinical utility of whole genome sequencing (WGS) in paediatric cancer has been demonstrated in recent years. WGS has been routinely available in the National Health Service (NHS) England for all children with cancer in England since 2021, but its uptake has been variable geographically. To explore the underlying barriers to routine use of WGS in this population across England and more widely in the United Kingdom (UK) and the Republic of Ireland (ROI), a one-day workshop was held in Cambridge, United Kingdom in October 2022.

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Article Synopsis
  • Structural variants (SVs) play a crucial role in genetic differences that relate to traits and diseases, but most research has focused on European populations.
  • This study compiles a catalogue of over 73,000 SVs from a diverse group of 8,392 Singaporeans, revealing that about 65% of these SVs are novel and specific to Asian ancestry groups.
  • The findings help identify clinically relevant SVs and improve genetic research by addressing biases related to ancestry, which is important for equity and diversity in the field.
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  • Temozolomide treatment for IDH-mutant gliomas can lead to complications like hypermutation and malignant transformation, but the progression of untreated low-grade gliomas is not well-explored.
  • A study analyzed tumors from 19 patients with IDH-mutant Grade 2 astrocytomas that were not treated with temozolomide or radiotherapy prior to recurrence, revealing that most recurrences were of a higher grade and frequently featured new copy number variations (CNVs) not found in the original tumors.
  • The research found that out of 19 cases, 89.5% exhibited significant genetic alterations at recurrence, but no hypermutation occurred, suggesting that untreated IDH-mutant astrocytomas
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Importance: Governments worldwide have become increasingly cognizant of the spread of genetic discrimination (negative treatment or harm on the basis of actual or presumed genetic characteristics). Despite efforts by a number of governments to establish regulations addressing this phenomenon, public concern about genetic discrimination persists.

Objective: To identify key elements of an optimal genetic nondiscrimination policy and inform policymakers as they seek to allay genetic nondiscrimination and related public anxieties.

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Dissecting biological pathways highlighted by Mendelian gene discovery has provided critical insights into the pathogenesis of Parkinson's disease (PD) and neurodegeneration. This approach ultimately catalyzes the identification of potential biomarkers and therapeutic targets. Here, we identify as a new gene implicated in PD and childhood neurodegeneration.

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  • Dysmorphologists face challenges due to the diverse phenotypic variability of human faces, particularly when using Next-Generation Phenotyping (NGP) tools, which are often trained on limited data.
  • To address this, the GestaltMatcher Database (GMDB) was created, compiling over 10,980 facial images from various global populations, significantly improving the representation of underrepresented ancestries, especially African and Asian patients.
  • The study found that incorporating data from non-European patients enhanced NGP accuracy by over 11% without compromising performance for European patients, highlighting the importance of diverse datasets in identifying genetic disorders.
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Background: Glioma is a highly heterogeneous brain tumor categorized into World Health Organization (WHO) grades 1-4 based on its malignancy. The suppressive immune microenvironment of glioma contributes significantly to unfavourable patient outcomes. However, the cellular composition and their complex interplays within the glioma environment remain poorly understood, and reliable prognostic markers remain elusive.

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Draft genomes generated from Oxford Nanopore Technologies (ONT) long reads are known to have a higher error rate. Although existing genome polishers can enhance their quality, the error rate (including mismatches, indels and switching errors between paternal and maternal haplotypes) can be significant. Here, we develop two polishers, hypo-short and hypo-hybrid to address this issue.

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The field of cancer genomics and transcriptomics has evolved from targeted profiling to swift sequencing of individual tumor genome and transcriptome. The steady growth in genome, epigenome, and transcriptome datasets on a genome-wide scale has significantly increased our capability in capturing signatures that represent both the intrinsic and extrinsic biological features of tumors. These biological differences can help in precise molecular subtyping of cancer, predicting tumor progression, metastatic potential, and resistance to therapeutic agents.

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PlantCFG: A comprehensive database with web tools for analyzing candidate flowering genes in multiple plants.

Plant Commun

February 2024

National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China; Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, China. Electronic address:

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The need for the expansion of genomic services has been at a record time high in the past decade. As technological advancement continues to strengthen the entire genetic and genomic pipeline and clinical operational workflow, the major challenge remains to be the speed of workforce development to meet service growth. In particular, the international expansion of genetic counselling (GC) services has been a topic of interest for the past few years.

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Article Synopsis
  • The significant phenotypic variability of human faces complicates the work of dysmorphologists by challenging Next-Generation Phenotyping (NGP) tools, especially when analyzing patients from diverse genetic backgrounds.
  • The research established the GestaltMatcher Database (GMDB), which includes over 10,000 facial images from patients with rare genetic disorders worldwide, striving to improve representation of underrepresented populations, particularly Asian and African patients.
  • The analysis showed that incorporating data from non-European patients enhanced the accuracy of NGP in diagnosing facial disorders without negatively affecting performance on European patients, emphasizing the need for more diverse datasets in medical genetics.
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Insertions are one of the major types of structural variations and are defined as the addition of 50 nucleotides or more into a DNA sequence. Several methods exist to detect insertions from next-generation sequencing short read data, but they generally have low sensitivity. Our contribution is two-fold.

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Meta-analysis of the diagnostic and clinical utility of exome and genome sequencing in pediatric and adult patients with rare diseases across diverse populations.

Genet Med

September 2023

Hong Kong Genome Institute, Hong Kong Special Administrative Region; Department of Paediatrics and Adolescent Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region. Electronic address:

Purpose: This meta-analysis aims to compare the diagnostic and clinical utility of exome sequencing (ES) vs genome sequencing (GS) in pediatric and adult patients with rare diseases across diverse populations.

Methods: A meta-analysis was conducted to identify studies from 2011 to 2021.

Results: One hundred sixty-one studies across 31 countries/regions were eligible, featuring 50,417 probands of diverse populations.

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Distribution based MIL pooling filters: Experiments on a lymph node metastases dataset.

Med Image Anal

July 2023

School of Computing, National University of Singapore, 13 Computing Drive, Singapore 117417, Singapore; A*STAR Genome Institute of Singapore, 60 Biopolis Street, Singapore 138672, Singapore; Hong Kong Genome Institute, Hong Kong Science Park, Shatin, Hong Kong, China; Department of Chemical Pathology, The Chinese University of Hong Kong, Hong Kong, China; Laboratory of Computational Genomics, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China. Electronic address:

Histopathology is a crucial diagnostic tool in cancer and involves the analysis of gigapixel slides. Multiple instance learning (MIL) promises success in digital histopathology thanks to its ability to handle gigapixel slides and work with weak labels. MIL is a machine learning paradigm that learns the mapping between bags of instances and bag labels.

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SVsearcher: A more accurate structural variation detection method in long read data.

Comput Biol Med

May 2023

Department of Chemical Pathology, The Chinese University of Hong Kong, Hong Kong, China; Hong Kong Genome Institute, Hong Kong Science Park, Shatin, Hong Kong, China; Laboratory of Computational Genomics, Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China. Electronic address:

Structural variations (SVs) represent genomic rearrangements (such as deletions, insertions, and inversions) whose sizes are larger than 50bp. They play important roles in genetic diseases and evolution mechanism. Due to the advance of long-read sequencing (i.

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Mitochondrial diseases in Hong Kong: prevalence, clinical characteristics and genetic landscape.

Orphanet J Rare Dis

March 2023

Department of Paediatrics and Adolescent Medicine, Hong Kong Children's Hospital, Hong Kong, SAR, People's Republic of China.

Article Synopsis
  • The study aimed to assess the prevalence, clinical features, and genetic factors of mitochondrial diseases (MD) in Hong Kong by analyzing data from public hospitals from 1985 to 2020.
  • A total of 119 MD patients were reviewed, revealing a prevalence rate of 1.02 cases per 100,000 people, with neurological issues being the most common symptoms and a 37% mortality rate within the cohort.
  • The study highlights the predominance of pathogenic variants in the mitochondrial genome and serves as a foundational step towards creating a local MD registry for further research.
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GPGPS: a robust prognostic gene pair signature of glioma ensembling IDH mutation and 1p/19q co-deletion.

Bioinformatics

January 2023

Shenzhen People's Hospital, First Affiliated Hospital of Southern University of Science and Technology, Second Clinical Medicine College of Jinan University, Shenzhen 518020, China.

Motivation: Many studies have shown that IDH mutation and 1p/19q co-deletion can serve as prognostic signatures of glioma. Although these genetic variations affect the expression of one or more genes, the prognostic value of gene expression related to IDH and 1p/19q status is still unclear.

Results: We constructed an ensemble gene pair signature for the risk evaluation and survival prediction of glioma based on the prior knowledge of the IDH and 1p/19q status.

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Editorial: Genetics and mechanism of ciliopathies.

Front Genet

October 2022

Department of Paediatrics and Adolescent Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.

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The genomics revolution over the past three decades has led to great strides in rare disease (RD) research, which presents a major shift in global policy landscape. While RDs are individually rare, there are common challenges and unmet medical and social needs experienced by the RD population globally. The various disabilities arising from RDs as well as diagnostic and treatment uncertainty were demonstrated to have detrimental influence on the health, psychosocial, and economic aspects of RD families.

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  • An international team of clinicians is working to standardize terminology related to human morphology to enhance communication and understanding in the field.
  • The initiative aims to reach consensus on definitions, improving the descriptions of human phenotypes and enabling better comparisons across patient cases.
  • The text introduces and illustrates specific anatomical terms for the trunk and limbs, laying the groundwork for clearer discussions in dysmorphology and related disciplines.
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HFE (Hemochromatosis) is a conventional iron level regulator and its loss of function due to gene mutations increases the risk of cancers including hepatocellular carcinoma (HCC). Likewise, studies focusing on HFE overexpression in cancers are all limited to linking up these events as a consequence of iron level deregulation. No study has explored any iron unrelated role of HFE in cancers.

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