Cosmic Help

Back << | Index | About Help | Close |

Search Help Page

  • This page contains help on using the COSMIC search facility. You can use it to search for gene names or accession numbers, sample names or ids, and tumour primary and secondary sites .
Boolean Operators
  • AND operator

    Conjunction operator. Note that AND is the default operator and is equivalent to a space character in the standard search screen

  • OR operator

    Specify synonyms by separating them with OR. For example, (adrenal OR salivary) gland, will match documents containing either adrenal or salivary and the word gland.

  • NOT operator

    You can eliminate documents that contain a particular word by prefixing this word with NOT. You can also use the minus sign instead of NOT.

  • OPT operator

    If you are not certain that a word will be in the document that you are looking for, prefix that word with OPT. This will favour documents that contain the word, but will not eliminate documents that do not. You can also use a question mark instead of OPT.

  • Grouping

    You can group your expressions by using parentheses. For example, (adrenal gland) OR (large intestine) will return documents which contain the words adrenal and gland, or documents which contain the words large and intestine.

Advanced Operators
  • Truncation/Wild card

    You can search for truncated words. For example, BRAF* will return every document containing a word that begins with BRAF. You can also search partial words where BR* will return everything beginning with BR, eg BRCA1, BRCA2, BRAF

  • Regular Expressions

    You can use advanced regular expressions in your queries. They must be separated from the rest of your query with two forward slashes / /.

    For example, if you want to find documents that contain the word placenta, but you don't remember the spelling of the word, you could try the query: /placenn?t+a/ which would search for placenta with at least 1 't'. The ? after a letter means that this letter may not be correct, so, even though you've searched for two 'n's, this query would return 'placenta' with one 'n'.

    In the same way, the query /AN?K+1/ would return ANKK1 and AK1, searching for at least 1 K, and maybe an 'N'. Also, /.RAS/ would return all the RAS genes, where the '.' in the regular expressions stands for any character, any number of times.

  • title

    You can restrict your search to the documents title. For example, title:BRAF returns documents which contain the word BRAF in their title

Linguistics Operators
  • Exact match

    Use the plus + operator to force an exact match for the following word (does not apply to accents) and prevent any match with the word root. For example, +gene will search for gene and not genes. Phrase recognition is automatic, so the search engine may incorrectly recognise a phrase such as "adrenal gland", whereas you were only looking for the two words separately: adrenal and gland. If this happens, simply change the word order of your search request, or prefix one of the words with the plus operator

  • Sequencing

    Use double quotes to force a match on the exact word sequence, as in "central nervous system" which will only match documents containing the three words central, nervous and system in this order.


Any More Questions?