• Procedure started
  • Under evaluation
  • CHMP opinion
  • European Commission final decision
Current status:
European Commission final decision



EMA recommends suspension of medicines over flawed studies at Semler Research Centre

Bioequivalence studies performed at the site cannot be used to support medicines approval in the EU

On 21 July 2016, the European Medicines Agency (EMA) recommended suspending a number of nationally approved medicines for which bioequivalence studies were conducted at Semler Research Centre Private Ltd, Bangalore, India. The Agency also recommended that medicines being evaluated for authorisation and which rely only on bioequivalence studies from this site should not be authorised until bioequivalence is demonstrated using alternative data. Bioequivalence studies usually form the basis for approval of generic medicines.

The PDF icon list of medicines recommended for suspension is available.

EMA's review followed an FDA inspection1 that identified several issues at Semler's bioanalytical site, including the substitution and manipulation of subjects' clinical samples. The World Health Organization (WHO) also raised serious concerns2 regarding data integrity and manipulation of study samples following its own inspections of Semler's bioanalytical and clinical sites.

The findings from FDA and WHO inspections called into question the quality management system in place at Semler, and thus the reliability of the data of all bioequivalence studies, including those used to support marketing authorisation applications in the EU. EMA's Committee for Medicinal Products for Human Use (CHMP) concluded that the studies conducted at Semler cannot be accepted in marketing authorisation applications in the EU. Thus, no medicines can be approved on the basis of these studies.

During the evaluation, alternative studies were provided for some of these medicines. These studies show bioequivalence, and therefore, the CHMP recommended that these medicines can remain on the market. The PDF icon list of medicines recommended to remain on the market is available.

Some of the medicines which have been recommended for suspension may be of critical importance (e.g. due to lack of available alternatives) in a given EU Member State. Therefore national authorities can temporarily postpone the suspension in the interest of patients. Member States should also decide whether recalls of the affected medicines are needed in their territories.

The CHMP's recommendation concerning these medicines was sent to the European Commission for a legally binding decision valid throughout the EU.

1FDA notification to Pharmaceutical Companies: Clinical and Bioanalytical Studies Conducted by Semler Research Are Unacceptable.

2WHO pre-qualification team - Inspections Services - Notice of concern.

Key facts

Approved name
Reference number
Article 31 referrals

This type of referral is triggered when the interest of the Union is involved, following concerns relating to the quality, safety or efficacy of a medicine or a class of medicines.

European Commission final decision
Opinion date
EC decision date

All documents

Document description

  • Questions and answers (Q&A) - easy-to-understand summary of key issues and Committee conclusions
  • Summary of Opinion - contains the CHMP opinion of the referred medicine(s)
  • List of the medicines affected by the referral (Annex I)
  • Scientific conclusions of the Committee (Annex II)

The following two documents are sometimes available:


How useful was this page?

Add your rating