COSMIC is an online database of somatically acquired

mutations In biology, a mutation is an alteration in the nucleic acid sequence of the genome of an organism, virus, or extrachromosomal DNA. Viral genomes contain either DNA or RNA. Mutations result from errors during DNA or viral replication, mitosi ...

found in human

cancer Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. These contrast with benign tumors, which do not spread. Possible signs and symptoms include a lump, abnormal bl ...

. Somatic mutations are those that occur in non- germline cells that are not inherited by children. COSMIC, an acronym of ''Catalogue Of Somatic Mutations In Cancer'', curates data from papers in the

scientific literature : ''For a broader class of literature, see Academic publishing.'' Scientific literature comprises scholarly publications that report original empirical and theoretical work in the natural and social sciences. Within an academic field, sci ...

and large scale experimental screens from the Cancer Genome Project at the Sanger Institute. The database is freely available to academic researchers and commercially licensed to others.

Creation and history

The COSMIC (Catalogue of Somatic Mutations in Cancer) database was designed to collect and display information on somatic mutations in cancer. It was launched in 2004, with data from just four

gene In biology, the word gene (from , ; "... Wilhelm Johannsen coined the word gene to describe the Mendelian units of heredity..." meaning ''generation'' or ''birth'' or ''gender'') can have several different meanings. The Mendelian gene is a b ...

HRAS GTPase HRas, from "Harvey Rat sarcoma virus", also known as transforming protein p21 is an enzyme that in humans is encoded by the gene. The ''HRAS'' gene is located on the short (p) arm of chromosome 11 at position 15.5, from base pair 522,241 ...

, KRAS2, NRAS and BRAF. These four genes are known to be somatically mutated in cancer. Since its creation, the database has expanded rapidly. By 2005 COSMIC contained 529 genes screened from 115,327 tumours, describing 20,981 mutations. By August 2009 it contained information from 1.5 million experiments performed, encompassing 13,423 genes in almost 370,000 tumours and describing over 90,000 mutations. COSMIC version 48, released in July 2010, incorporates mutation data from p53 in collaboration with the International Agency for Research on Cancer. In addition, it provided updated gene co-ordinates for the most recent human reference genome builds. This release includes data from over 2.76 million experiments on over half a million tumours. The number of mutations documented in this release totals 141,212. The website is focused on presenting complex phenotype-specific mutation data in a graphical manner. Data is taken from selected genes, initially in the Cancer Gene Census, as well as literature search from

PubMed PubMed is a free search engine accessing primarily the MEDLINE database of references and abstracts on life sciences and biomedical topics. The United States National Library of Medicine (NLM) at the National Institutes of Health maintain ...

Process

Data can be accessed via selection of a gene or cancer tissue type (

phenotype In genetics, the phenotype () is the set of observable characteristics or traits of an organism. The term covers the organism's morphology or physical form and structure, its developmental processes, its biochemical and physiological prop ...

), either using ''browse by'' features or the ''search'' box. Results show summary information with mutation counts and frequencies. The gene summary page provides a mutation spectrum map and external resources; the phenotype (tissue) summary page provides lists of mutated genes.

Examples

The figure shows the

CDKN2A CDKN2A, also known as cyclin-dependent kinase inhibitor 2A, is a gene which in humans is located at chromosome 9, band p21.3. It is ubiquitously expressed in many tissues and cell types. The gene codes for two proteins, including the INK4 family ...

gene, which is a tumor suppressor that leads to cancer when it is inactivated.

The COSMIC database contains thousands of somatic mutations that are implicated in the development of cancer. The database collects information from two major sources. Firstly, mutations in known cancer genes are collected from the literature. The list of genes that undergo manual curation are identified by their presence in the Cancer Gene Census. Secondly, data for inclusion in the database is collected from whole genome resequencing studies of cancer samples undertaken by the Cancer Genome Project. For example, Campbell and colleagues used next generation sequencing to examine samples from two individuals with

lung cancer Lung cancer, also known as lung carcinoma (since about 98–99% of all lung cancers are carcinomas), is a malignant lung tumor characterized by uncontrolled cell growth in tissues of the lung. Lung carcinomas derive from transformed, malign ...

which led to the identification of 103 somatic DNA rearrangements. COSMIC also catalogues mutational signatures in human cancer through the COSMIC Signatures group, which represents a collaboration between COSMIC, the Wellcome Sanger Institute, and the

University of California, San Diego The University of California, San Diego (UC San Diego or colloquially, UCSD) is a public university, public Land-grant university, land-grant research university in San Diego, California. Established in 1960 near the pre-existing Scripps Insti ...

. The COSMIC signatures database has been leveraged to catalogue the prevalence of specific mutational signatures in human cancer, such as the frequency of ultraviolet radiation-mediated mutagenesis in skin cancers.

References

External links

Catalogue Of Somatic Mutations In Cancer
homepage
IARC TP53 databaseCancer genome anatomy project at the National Cancer InstituteAtlas of Genetics and Cytogenetics in Oncology and HaematologyMethyCancer, a database of human DNA methylation and cancerCOSMIC in the bioinformatics.ca Links Directory
{{Wellcome Trust Biological databases Cancer genome databases Cancer research Genetic engineering in the United Kingdom Medical databases Medical genetics Science and technology in Cambridgeshire South Cambridgeshire District Wellcome Trust

Creation and history

Process

Examples

Contents

See also

References

External links