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Showing posts from June, 2018

Withdrawn Drugs

These is much ongoing work within the drug discovery and toxicology communities to better understand the safety aspects of approved drugs and clinical candidate compounds, and for this reason there is clear interest in why some drugs have been approved but then subsequently withdrawn from the market. This post describes the information for withdrawn drugs that is currently available in ChEMBL.
Within ChEMBL (release 24) there are 192 drugs that have been annotated as approved but then subsequently withdrawn from the market for one or more reasons.For each of these drugs, the year of withdrawal, region of withdrawal and reason for withdrawal (‘withdrawn_reason’) have been available since release 22 of ChEMBL (see ftp://ftp.ebi.ac.uk/pub/databases/chembl/ChEMBLdb/releases/chembl_22/archived/chembl_22_release_notes.txt), while the classification of the reason for withdrawal (‘withdrawn_class’)is a new feature for ChEMBL (release 24).The withdrawn information is available for relevant dr…