Phase III Trial of Oral Cladribine Starts

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Phase III Trial of Oral Cladribine Starts

Postby Dunmann » Thu May 04, 2006 8:03 am

Phase III Trial of Oral Cladribine, a Novel Investigational Therapy for Multiple Sclerosis, Begins in the United States
Thursday May 4, 8:17 am ET
Nationwide Recruitment Begins at Sites Across the U.S.

ROCKLAND, Mass. and GENEVA, May 4 /PRNewswire-FirstCall/ -- Serono (virt-x: SEO and NYSE: SRA) announced today that recruitment in the U.S. is beginning for the Phase III CLARITY study (CLAdRIbine Tablets in Treating MS OrallY Study) of oral cladribine for the treatment of patients with relapsing forms of multiple sclerosis (MS). This multi-national study was successfully initiated outside the U.S. in 2005, and will now expand to include 17 clinical trial sites in the U.S. The study is one of the largest MS trials ever conducted, and enrollment is on track to be completed in 2006.

CLARITY is a two-year, double-blind, placebo-controlled Phase III study of more than 1,200 patients. It is designed to assess patients' clinical relapses, disability progression and MRI (magnetic resonance imaging) brain activity. Previous clinical trials using cladribine administered by injection in patients with MS showed positive effects in reduction of new lesion development in the brain as seen on MRI scans; reductions in relapses were also observed.

"The Phase III CLARITY trial is enrolling at a strong pace, and the addition of US sites will accelerate this pace and bring us one step closer to our goal of making the first oral MS therapy available for people living with this debilitating condition, underscoring our fundamental and long-term commitment to the MS community," said Dr. Paul Lammers, Chief Medical Officer at Serono, Inc. "The formulation of oral cladribine, combined with the proposed short dosing regimen, should help patients to be more compliant with their MS therapy and lighten the patient's treatment burden associated with chronic MS."

"We all are looking forward to the day when there is an FDA approved oral therapy that can affect the underlying disease process in MS," said Dr. John Richert vice president research and clinical programs at the National MS Society. "Clinical studies, such as CLARITY, are an important part of the process leading to the development of these new medications. Those interested in determining whether they are eligible to participate in the clinical trial should speak with their healthcare provider."

Trial Recruitment Taking Place in 15 States

Currently, there are 17 clinics, medical centers, universities and hospitals recruiting patients to participate in the study in 15 major cities across the country, including:

* Medford, OR * Ann Arbor, MI
* Newark, NJ * Oklahoma City, OK
* Boulder, CO * Charleston, SC
* Las Vegas, NV * Columbus, OH
* Fort Wayne, IN * Chicago, IL
* Durham, NC * Edmonds, WA
* Baltimore, MD * Atlanta, GA
* Charleston, WV

Further clinical trial site information is available at, or the U.S. National Institutes of Health clinical trial information website at

"We are excited to further evaluate oral cladribine for the treatment of MS," said Dr. Dusan Stefoski, M.D., associate professor of the Rush Multiple Sclerosis Center and a clinical investigator for the CLARITY trial. "From my clinical experience, the addition of an oral therapy for MS could improve compliance among patients and potentially change the MS treatment paradigm."

It is estimated that approximately 400,000 Americans are affected with MS, a chronic, progressive autoimmune disease of the central nervous system (CNS). Relapsing forms of MS are the most common. While symptoms of MS are unpredictable and can vary, the most common symptoms of MS include blurred vision, numbness or tingling in the limbs and problems with strength and coordination.

About Oral Cladribine

Oral cladribine is a proprietary oral tablet formulation of cladribine that is being studied in an effort to demonstrate possible benefits as a treatment for patients with relapsing forms of MS. Cladribine is a purine nucleoside analogue that interferes with the behavior and the proliferation of certain white blood cells, particularly lymphocytes, which are involved in the pathological process of MS. Through its differentiated mechanism of action, cladribine tablets may offer an effective new option to patients with MS.

About Serono Neurology

Currently, Serono has two therapies available for the treatment of MS: Rebif (interferon beta-1a), indicated for relapsing forms of MS, and Novantrone (mitoxantrone for injection concentrate), the only therapy approved for worsening forms of MS. Full prescribing information for these products can be obtained by contacting Serono or visiting the Serono website at Additional therapy options beyond cladribine tablets are currently under development at Serono, including osteopontin, an MMP-12 inhibitor, a JNK inhibitor and interferon beta:Fc, in early-stage development for MS. Serono also is taking a leading role in developing an understanding of the role of genetics in MS, with a whole genome scan currently underway. To- date, 80 genes associated with MS have been identified, based on a 40% scan. The project is due to be completed in 2006 and will improve understanding of the causes of MS and the appropriate therapeutic targets for the disease.

Some of the statements in this press release are forward looking. Such statements are inherently subject to known and unknown risks, uncertainties and other factors that may cause actual results, performance or achievements of Serono S.A. and affiliates to be materially different from those expected or anticipated in the forward-looking statements. Forward-looking statements are based on Serono's current expectations and assumptions, which may be affected by a number of factors, including those discussed in this press release and more fully described in Serono's Annual Report on Form 20-F filed with the U.S. Securities and Exchange Commission on February 28, 2006. These factors include any failure or delay in Serono's ability to develop new products, any failure to receive anticipated regulatory approvals, any problems in commercializing current products as a result of competition or other factors, our ability to obtain reimbursement coverage for our products, the outcome of government investigations and litigation and government regulations limiting our ability to sell our products. Serono has no responsibility to update the forward-looking statements contained in this press release to reflect events or circumstances occurring after the date of this press release.

About Serono

Serono is a global biotechnology leader. The Company has seven biotechnology products in the U.S., Rebif® (interferon beta-1a), Gonal-f® (follitropin alfa for injection), Luveris® (lutropin alfa), Ovidrel PreFilled Syringe®/Ovitrelle® (choriogonadotropin alfa injection), Serostim® [somatropin (rDNA origin) for injection], Saizen® [somatropin (rDNA origin) for injection] and Zorbtive(TM) [somatropin (rDNA origin) for injection].(1) In addition to being the world leader in reproductive health, Serono has strong market positions in neurology, metabolism and growth and has recently entered the psoriasis area. The Company's research programs are focused on growing these businesses and on establishing new therapeutic areas, including oncology and autoimmune diseases. Currently, there are more than 25 on-going development projects.

In 2005, Serono, whose products are sold in over 90 countries, achieved worldwide revenues of US$2,586.4 million. Reported net loss in 2005 was US$106.1 million, reflecting a charge of US$725 million taken relating to the settlement of the US Attorney's Office investigation of Serostim. Excluding this charge as well as other non-recurring items, adjusted net income grew 28.4% to US$565.3 million in 2005. Bearer shares of Serono S.A., the holding company, are traded on the virt-x (SEO) and its American Depositary Shares are traded on the New York Stock Exchange (SRA).

(1) Package inserts for Serono's US marketed products are available at or by calling 1-888-275-7376.

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Postby bromley » Thu May 04, 2006 1:36 pm

It's good to see that disability progression is going to be assessed in additon to the usual enhancing lesions. At the end of the day I don't care if my brain is on fire - it's the disability (physical or mental) that I don't want.

Does anyone know how the Phase II trials went?

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Postby dignan » Thu May 04, 2006 4:35 pm

It's interesting. There is no efficacy data for Mylinax out there. There have been a couple of studies of injectible cladribine, but the only Mylinax study was to test if the oral formulation got into the system, it didn't test effectiveness. When they found that the oral formulation got into our systems, they jumped right to a phase III study, which is just fine by me, I wish that's the way the drug trial system worked all the time. ... _2205.aspx
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Postby bromley » Fri May 05, 2006 1:07 am

It's strange how the trials proceed - I think Phase III Mylinax has already started in Europe - maybe because Serono is a European company.

It's also strange that the Rituxin trial for PP is in Phase III yet the trial for RR is in Phase II. I don't recall seeing trial results for Phase II for PP.

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Postby Dahlia » Mon May 08, 2006 9:28 pm

i live in Australia, and may have the 'opportunity' to trial this drug. I was diagnosed 1 year ago and haven't gone on the ABC drugs. Do you think this is a good option?
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Postby bromley » Tue May 09, 2006 1:49 am


I suppose the point of the trial is to assess whether the drug is effective (and how effective). But the problem is that you could be on the placebo arm for two years!

It's a decision you should take in consultation with your neuro.

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Re: Phase III Trial of Oral Cladribine Starts

Postby NHE » Tue May 09, 2006 2:17 am

Dahlia wrote:i live in Australia, and may have the 'opportunity' to trial this drug. I was diagnosed 1 year ago and haven't gone on the ABC drugs. Do you think this is a good option?

I doubt that anyone here can really answer your question since we cannot provide direct medical advice. However, I do believe in helping people to be informed. With that, you may want to read some information on Cladribine available at the Mayoclinic. While I'm all for the development of an oral treatment for MS as I'm getting tired of being a walking pin cushion, it seems that this is another instance of the pharmaceutical companies throwing another heavy duty cancer chemotherapeutic at MS. As Bromley noted, participating in such a trial is a decision that you, your family, and your doctors will have to make. I find that I'm comfortable with my decisions when I'm well informed. To that end, I encourage anyone considering a trial therapy to be as informed as possible. The warning about possible sterility might be something to consider especially if you're planning on children.
Cladribine has been shown to cause birth defects in mice and rabbits. In addition, many cancer medicines may cause sterility which could be permanent. Although sterility has not been reported with this medicine, fertility problems do occur in male monkeys and the possibility should be kept in mind.

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