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‘Herceptin Biosimilars’ Seriously Questioned

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The news struck as an anticlimax, close on the heels of high decibel product launch of ‘Herceptin Biosimilars’ in India, being hyped as the first in the world, bringing much needed relief to many diagnosed breast cancer patients for their economical pricing.

At the same time, this legal challenge has now come as an acid test for the regulator to prove that ‘Caesar’s wife must be above suspicion’ for any new drug approval and especially if it is a complex biosimilar used for the treatment of patients suffering from dreaded diseases, such as, breast cancer.

It’s not patent this time:

Interestingly, this is not a patent infringement case, as Roche has reportedly given-up its patent on Trastuzumab (Herceptin) in India last year.

Alleged violations: 

The above media report highlights, in Delhi High Court Roche has sued Biocon of India and its US based generic partner – Mylan along with the Drug Controller General of India (DCGI) related to launch of ‘Herceptin Biosimilar’ versions in India.

The allegation against Biocon and Mylan is that their recently launched drugs are being misrepresented as ‘biosimilar Trastuzumab’ or ‘biosimilar version of Herceptin’ without following the due process in accordance with the ‘Guidelines on Similar Biologics‘, necessary for getting approvals of such drugs in India.

‘Caesar’s wife’ under suspicion too:

The DCGI has also been sued by Roche for giving permission for launch of this product allegedly not in conformance with the above biosimilar guidelines, which were put in place effective August 15, 2012.

Roche reportedly argued that the above guidelines on similar biologics laid down a detailed and structured process for comparison of biosimilar with the original product and all the applications for manufacturing and marketing authorization of biosimilars are necessarily required to follow that prescribed pathway before obtaining marketing approval from the DCGI. Roche has also stated that there is no public record available, in the clinical trial registry India (CTRI) or elsewhere to show that these two players actually conducted phase-I or II clinical trials for the drug.

According to report Roche claims that DCGI has approved the “protocol and design study for testing” of Biocon related to the proposed drug just before the above regulatory guidelines were made effective, predominantly for patients’ health and safety reasons.

Interim restrain of the Delhi High Court:

In response to Roche’s appeal, the Delhi High Court has reportedly restrained Mylan and Biocon from “relying upon” or “referring to Herceptin” or any data relating to it for selling or promoting their respective brands Canmab (Biocon) and Hertaz (Mylan) till the next hearing.

The relevance of ‘Guidelines on Similar Biologics’:

The ‘Guidelines on Similar Biologics’ clearly articulated:

“Since there are several biosimilar drugs under development in India, it is of critical importance to publish a clear regulatory pathway outlining the requirements to ensure comparable safety, efficacy and quality of a similar biologic to an authorized reference biologic.”

Thus for patients’ health and safety interest the above regulatory pathway must be followed, the way these have been prescribed without any scope of cutting corners. This is even more important when so important pharmacovigilance system is almost non-functional in India.

Attempts to dilute the above guidelines from some quarters:

It was earlier reported that strong representations were made to the drug regulator in writing by powerful domestic players in this area urging to dilute the above ‘Guidelines’, otherwise it will be difficult for them to compete with the pharma MNCs.

This argument is ridiculous by any standard and smacks of putting commercial considerations above patients’ health interest.

The key issue:

As I see it, four quick questions that float at the top of my mind are as follows:

  • If the ‘Guidelines on Similar Biologics’ have not been followed either by the applicants or by the DCGI, how would one establish beyond an iota of doubt that these drugs are biosimilar to Trastuzumab, if not ‘Biosimilar to Herceptin’?
  • If these drugs are not proven biosimilar to Trastuzumab, as specified in the ‘Guidelines on Similar Biologics’, how can one use Trastuzumab data for their marketing approvals and the DCGI granting the same?
  • If these drugs were not biosimilars to Trastuzumab, would these be as effective, reliable and safe as Herceptin in the treatment of breast cancer?
  • Further, how are references related to Herceptin being used to promote these drugs both pre and post market launch?

Conclusion:

I guess, predominantly commercial considerations prompted Roche to sue Biocon, Mylan and also the DCGI on ‘Trastuzumab biosimilars’, launched recently in India.

Be that as it may, for the interest of so many diagnosed breast cancer patients in the country, there is crying need for the facts to come out in the open, once and for all. Are these drugs truly Trastuzumab biosimilars with comparable safety, efficacy, quality and reliability of Herceptin?

If the answer comes as yes, there would be a huge sigh of relief from all corners inviting millions of kudos to Biocon and Mylan.

However, if by any chance, the allegations are proved right, I do not have an iota of doubt that the honorable Delhi High Court would ferret out the truth, unmask the perpetrators and give them exemplary punishments for playing with patients’ lives.

By: Tapan J. Ray

Disclaimer: The views/opinions expressed in this article are entirely my own, written in my individual and personal capacity. I do not represent any other person or organization for this opinion.

Herceptin Biosimilar Expands Drug Access to Breast Cancer Patients in India

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Come February 2014, much to the relief of more than 145,000 patients diagnosed with breast cancer in India, Herceptin of Roche, a critical drug for the treatment of the dreaded disease, will face competition, for the first time, from a less expensive biosimilar equivalent. The product named Canmab developed together with Mylan by Biocon has been priced 25 percent less than Herceptin.

Patient access issue for newer cancer therapy:

Herceptin has been a very critical drug, though equally expensive, for breast cancer patients globally.

Mainly because of its unusual high price, the product created an access barrier to majority of patients in India. Arising out of complexity of the problem faced by the cancer patients, hugely compounded by the affordability issue, on January 12, 2013, it was first reported that in a move that is intended to benefit thousands of cancer patients, Indian Government has started the process of issuing Compulsory Licenses (CL) for three commonly used anti-cancer drugs: 

-       Trastuzumab (or Herceptin, used for breast cancer),

-       Ixabepilone (used for chemotherapy)

-       Dasatinib (used to treat leukemia).

For a month’s treatment drugs like, Trastuzumab, Ixabepilone and Dasatinib reportedly cost on an average of US$ 3,000 – 4,500 or Rs 1.64 – 2.45 lakh for each patient in India.

Pricing issue needs a systemic resolution: 

While there is no single or only right way to arrive at the price of a patent protected medicine, how much the pharmaceutical manufacturers will charge for such drugs still remains an important, yet complex and difficult issue to resolve, both locally and globally. Even in the developed nations, where an appropriate healthcare infrastructure is already in place, this issue comes up too often mainly during price negotiation for reimbursed drugs. 

A paper titled, “Pharmaceutical Price Controls in OECD Countries”, published by the U.S. Department of Commerce, after examining the drug price regulatory systems of 11 OECD countries, concluded that all of them enforce some form of price control to limit spending on pharmaceuticals. The report also indicated that the reimbursement prices in these countries are often treated as de facto market price.

Though there is no such system currently prevailing in India, the Government is mulling to put in place a similar mechanism for patented medicines, as captured in the National Pharmaceutical Pricing Policy (NPPP) 2012.

Further, some OECD governments regularly cut prices of even those drugs, which are already in the market. The value of health outcomes and pharmacoeconomics analysis is gaining increasing importance for drug price negotiations/control by the healthcare regulators even in various developed markets of the world to ensure responsible pricing of IPR protected medicines. For various reasons, no such process is followed either for such product pricing in India, as on date.

Roche changed Herceptin strategy for India:

To effectively address the challenge of pricing of patented medicines in India, Roche reportedly entered into a ‘never-before’ technology transfer and manufacturing contract for biologics with a local Indian company – Emcure Pharma for its two widely acclaimed ‘Monoclonal Antibodies’ anti-cancer drugs – Herceptin and MabThera.

Consequently, Roche introduced its ‘made in India’ brand Herclon (Herceptin) with a much-reduced maximum retail price of about Rs. 75,000 for a 440 mg vial and started co-marketing the product with Emcure Pharma in India.

Although Herceptin patent remains valid in the United States (US) until 2018, Roche decided to discontinue its patent rights for Herceptin in India in 2013.

The pharma major reportedly lost this patent earlier in Europe. This vindicates the views of many experts that Herceptin patent was weak, as it would probably not be able to clear the litmus test of a stringent scrutiny under the Patent Acts of India. The report, therefore, argues that core reason for withdrawal of Herceptin patent in India by Roche cannot be attributed, even remotely, to the ‘weak IP ecosystem’ in India.

Biocon Pricing:

According to reports Biocon’s Canmab, the biosimilar version of Herceptin, will be available in 440 mg vial with a maximum retail price of Rs. 57,500 and also in 150 mg vial at Rs. 19,500.

Lower price would lead to greater patient access – Roche argued earlier:

It was reported, when Roche switched over to Herclon with around 30 percent discounted price from very high price Herceptin, access to the drug improved. In fact, that was the logic cited by Roche for the launch of Herclon in India at that time. 

Just to recapitulate, media reports indicated at that time that Roche intends to offer to Indian patients significantly cheaper, local branded version of Herceptin sooner. The same news item also quoted Roche spokesperson from Basel, Switzerland commenting as follows:

“The scope is to enable access for a large majority of patients who currently pay out of pocket as well as to partner with the government to enable increased access to our products for people in need”.

Conclusion:

It is beyond doubt that even with significantly lower price, Canmab would not be able to guarantee 100 percent access to the drug for all breast cancer patients in the country.

However, applying the same logic of Roche, as mentioned above, with further 25 percent price discount for Canmab by Biocon, the access to this drug should expand significantly for over 145,000 diagnosed breast cancer patients in India even, for an argument’s sake, all other factors, including inadequate number diagnostic facilities etc. remain the same. Isn’t that better?

By: Tapan J. Ray

Disclaimer: The views/opinions expressed in this article are entirely my own, written in my individual and personal capacity. I do not represent any other person or organization for this opinion