News brief
The European Medicines Agency (EMA) has released guidelines on the control of impurities of pharmacopoeial substances, (http://www.emea.eu.int/pdfs/human/qwp/152904en.pdf) and also a concept paper for a guideline on the requirements regarding quality aspects of a clinical trial authorisation request (http://www.emea.eu.int/pdfs/human/qwp/154204en.pdf).