INN 53rd Executive Summary

53rd Consultation on International Nonproprietary Names for Pharmaceutical Substances

31 December 2011

| Publication

During the Consultation, a total of 124 INN were discussed, including:

93 new INN requests, including 43 for biological substances
21 outstanding requests
10 previously selected proposed INN, against which a formal objection had been raised

As a result of these discussions, 107 new names were selected, which are planned to be published in

List 107 of Proposed INN, while 6 requests were deferred for future discussion. Two requests were

rejected by the INN experts, as the substances did not conform to the criteria for INN selection. Four

amendments are planned to be published in List 107. Six objections have been discussed and rejected

by the INN Expert Group. Three INN requests have been withdrawn during the selection process.

Two new stems and one new sub-stem have been selected and three suffixes have been promoted to

the pre-stem list. The 2011 version of "The use of stems in the selection of International

Nonproprietary Names (INN) for pharmaceutical substances" has also been presented to the INN

Expert Group. The relevant documents can be downloaded from the INN Web pages:

http://www.who.int/medicines/services/inn/stembook/en/index.html

WHO Team

INN and Classification of Medical Products (INN)

Number of pages

Reference numbers

WHO Reference Number: INN Working Doc. 12.304