Q (sonnet): How many total studies contain mutation data in the cBioPortal database?

▶ clickhouse_run_select_query
{
 "query": "SELECT count(*) AS studies_with_mutation_data FROM cancer_study WHERE mutation_sample_count > 0"
}

◀ result
{"rows":[{"studies_with_mutation_data":542}]}

═ answer (success)
**542 studies** in the cBioPortal database contain mutation data (i.e., have at least one profiled sample with mutation data), out of the total set of cancer studies in the database.

You can browse and filter these studies directly on the [cBioPortal study list](https://www.cbioportal.org/study).