Disease and Genetic Variation Databases
Introduction
Disease and genetic variation databases are specialized biological repositories that store information on inherited disorders, disease-associated genes, genetic variants, somatic mutations, and genotype–phenotype relationships. These databases play a crucial role in medical genetics, clinical genomics, precision medicine, cancer research, and biomedical studies. Researchers and healthcare professionals use these resources to identify disease-causing mutations, interpret genetic variants, study hereditary disorders, and support clinical diagnosis and therapeutic research.
Major disease and genetic variation databases include OMIM, ClinVar, COSMIC, The Cancer Genome Atlas (TCGA), and the Human Gene Mutation Database (HGMD).
OMIM (Online Mendelian Inheritance in Man)
Online Mendelian Inheritance in Man (OMIM) is a comprehensive and authoritative database of human genes and inherited genetic disorders. It provides detailed information on gene functions, hereditary diseases, inheritance patterns, and genotype–phenotype relationships based on scientific literature.
Researchers and clinicians use OMIM to:
- Study inherited genetic disorders
- Explore genotype–phenotype relationships
- Identify disease-associated genes
- Support medical genetics and clinical diagnosis
OMIM is one of the most widely used resources in human genetics and genomic medicine.
Website: https://www.omim.org/
ClinVar
ClinVar is a publicly accessible database developed and maintained by the National Center for Biotechnology Information (NCBI). It archives clinically significant genetic variants and their relationships to human health.
ClinVar includes:
- Clinical interpretations of genetic variants
- Evidence supporting variant classifications
- Disease associations
- Review status and expert submissions
The database is widely used in clinical genomics, diagnostic laboratories, genetic counseling, and precision medicine.
Website: https://www.ncbi.nlm.nih.gov/clinvar
COSMIC (Catalogue of Somatic Mutations in Cancer)
COSMIC (Catalogue of Somatic Mutations in Cancer) is one of the world’s leading databases of somatic mutations associated with human cancers. It collects and curates mutation data obtained from tumor samples, scientific literature, and large-scale cancer sequencing projects.
Researchers use COSMIC to:
- Investigate cancer-associated mutations
- Analyze tumor genomics
- Identify cancer driver genes
- Support oncology and precision cancer research
COSMIC is an essential resource for cancer genomics and translational oncology.
Website: https://cancer.sanger.ac.uk/cosmic
TCGA (The Cancer Genome Atlas)
The Cancer Genome Atlas (TCGA) is a landmark cancer genomics program that generated comprehensive molecular datasets from thousands of human tumor samples across numerous cancer types. It includes genomic, transcriptomic, epigenomic, proteomic, and clinical data to support cancer research.
TCGA has significantly advanced the understanding of cancer biology, tumor classification, biomarker discovery, and precision oncology.
Website: https://www.cancer.gov/tcga
HGMD (Human Gene Mutation Database)
The Human Gene Mutation Database (HGMD) is a comprehensive repository of published human gene mutations associated with inherited diseases. It catalogs disease-causing mutations identified in scientific literature and serves as an important reference for clinical diagnostics and genetic research.
Researchers and clinicians use HGMD to study mutation–disease relationships, identify pathogenic variants, and support genetic testing and molecular diagnostics.
Website: https://www.hgmd.cf.ac.uk/