Biosimilars

Australia approves first biosimilar filgrastim

Biosimilars/News | Posted 08/10/2010

On 26 September 2010 US-based generics manufacturer Hospira announced that it had received approval from the Therapeutic Goods Administration (Australia's regulatory agency for medical drugs and devices) for its biosimilar filgrastim product, Nivestim.

Epoetin alfa and pure red cell aplasia

Biosimilars/Research | Posted 01/10/2010

Most therapeutic proteins have the potential to induce an immune response. Cases of pure red cell aplasia (PRCA) were reported after the formulation of Eprex (epoetin alfa) was changed. It is now known that ‘the process is the product’ and the formulation cannot be changed without approval by the relevant authorities.

Approval of biosimilar epoetins: how similar are they?

Biosimilars/Research | Posted 24/09/2010

A consensus has emerged that approval of biosimilars requires both biological and clinical evidence. The ‘comparability exercise’ requires consideration of a wide range of aspects, including analytical and physico-chemical characterisation by several methods, comparative biological assays, comparative immunogenicity assessment, among others. The use of different host cells for the biosimilar product and the comparator in principle is possible.

Biosimilar epoetins: how similar are they?

Biosimilars/Research | Posted 24/09/2010

As the patent expiry dates of the original erythropoietins drew near, much concern was expressed in 2004 about possible biosimilar competitors. Product quality, safety and efficacy of biopharmaceuticals are highly dependent on the processes of production, purification and formulation. How have these genuine concerns been answered by the EMA in granting marketing approval, and have any other problems come to light?

Cipla invests in biosimilars

Biosimilars/News | Posted 17/09/2010

India-based generics’ manufacturer Cipla is increasing its presence in the biosimilars’ market with major investments planned for the near future, according to a report in the Indian newspaper Business Standard.

Highs and lows for biosimilars during 2009/2010

Biosimilars/General | Posted 17/09/2010

A lot has happened in the biosimilars’ industry during 2009/2010.

Dr Reddy’s launches biosimilar Aranesp

Biosimilars/News | Posted 17/09/2010

Dr Reddy’s Laboratories increases its stake in the biosimilars’ market with the latest launch in India from its biosimilars’ programme. Cresp is the first generic darbepoetin alfa in the world, and the only darbepoetin alfa in India. Darbepoetin alfa is used for the treatment of anaemia due to chronic kidney disease and chemotherapy.

Good news for biosimilar enoxaparin sodium

Biosimilars/News | Posted 03/09/2010

French pharma giant sanofi-aventis (sanofi) has been denied a request to block sales of a generic version of its Lovenox blood thinner by a US district court.

How far does similarity go?

Biosimilars/Research | Posted 25/08/2010

How much similarity does a biosimilar monoclonal antibody (mAb) have to show to its reference mAb? The European overarching biosimilar guideline states that a biosimilar needs to be ‘similar, in molecular and biological terms, to the active substance of the reference medicinal product.’ The guideline gives an example to highlight this, stating that an interferon alfa-2b would not be acceptable as a reference product to a biosimilar interferon alfa-2a1. Because interferon alfa-2a and alfa-2b differ in only one amino acid, the guideline thus indicates that the entire amino acid sequence of the two molecules should be identical.

What clinical trials will be required for biosimilar mAbs?

Biosimilars/Research | Posted 25/08/2010

The relevant European guideline states that if the reference medicinal product has more than one indication, the efficacy and safety of a biosimilar has to be justified, if necessary by demonstrating it separately for each indication claimed. The guideline brings up the possibility of ‘extrapolating’ efficacy (granting several clinical indications that are licensed for the reference product, although only one of the indications has been studied in the clinical development programme of the biosimilar). This would not be done without serious consideration. The mechanism of action of monoclonal antibodies (mAbs) is usually complex and in many cases only partially understood.