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Genentech’s BTK Inhibitor Fenebrutinib Significantly Reduced Brain Lesions in People With Relapsing Forms of Multiple Sclerosis

–– Fenebrutinib is an investigational, potent and highly selective oral Bruton’s tyrosine kinase (BTK) inhibitor, the only reversible BTK inhibitor currently in Phase III multiple sclerosis (MS) trials

–– Phase II study met its primary and secondary endpoints by reducing the total number of new gadolinium-enhancing T1 brain lesions and significantly reducing the total number of new or enlarging T2 brain lesions compared to placebo

–– The safety profile of fenebrutinib was consistent with previous and ongoing clinical trials across more than 2,400 people to date

Genentech, a member of the Roche Group (SIX: RO, ROG; OTCQX: RHHBY), announced today positive results from the Phase II FENopta study evaluating investigational oral fenebrutinib in adults with relapsing forms of multiple sclerosis (RMS). The study met its primary and secondary endpoints, showing oral fenebrutinib significantly reduced magnetic resonance imaging (MRI) markers of MS disease activity in the brain compared to placebo. Additionally, pre-clinical data have shown fenebrutinib to be potent and highly selective, and it is the only reversible inhibitor currently in Phase III trials for MS.

“I am encouraged by this clinical data for fenebrutinib, which is important news for people living with MS,” said Levi Garraway, M.D., Ph.D., chief medical officer and head of Global Product Development. “Fenebrutinib’s mechanism of action, which can inhibit both B cells and microglia, has the potential to both reduce MS disease activity, such as relapses, and also impact disease progression.”

Fenebrutinib significantly reduced the total number of new gadolinium-enhancing T1 brain lesions compared to placebo, the primary endpoint of the trial (p=0.0022). Additionally, fenebrutinib significantly reduced the total number of new or enlarging T2 brain lesions compared to placebo, a secondary endpoint. Furthermore, a higher proportion of patients treated with fenebrutinib were free from any new gadolinium-enhancing T1 brain lesions and new or enlarging T2-weighted brain lesions compared to placebo. T1 lesions, as measured by MRI, are a marker of active inflammation and T2 lesions represent the amount of disease burden or lesion load.

The safety profile of fenebrutinib was consistent with previous and ongoing fenebrutinib clinical trials across more than 2,400 people to date. There were no new safety concerns identified in the FENopta study.

Detailed results will be shared at an upcoming medical meeting. The Phase III fenebrutinib clinical trial program in RMS and primary progressive MS (PPMS) is ongoing.

About fenebrutinib

Fenebrutinib is an investigational oral, reversible and non-covalent BTK inhibitor that blocks the function of BTK. BTK, also known as tyrosine-protein kinase BTK, is an enzyme that regulates B-cell development and activation, and is also involved in the activation of innate immune system myeloid lineage cells, such as macrophages and microglia. Pre-clinical data have shown fenebrutinib to be potent and highly selective, and it is the only reversible inhibitor currently in Phase III trials for MS. Fenebrutinib has been shown to be 130 times more selective for BTK vs. other kinases. These design features may be important as the high selectivity and reversibility can potentially reduce off-target effects of a molecule and contribute to long-term safety outcomes.

Fenebrutinib is a dual inhibitor of both B-cell and microglia activation. This dual inhibition has the potential to reduce both MS disease activity and progression, thereby addressing the key unmet medical need in people living with MS. The Phase III program includes two identical trials in RMS (FENhance 1 and 2) with an active teriflunomide comparator and one trial in PPMS (FENtrepid) in which fenebrutinib is being evaluated against Ocrevus® (ocrelizumab). To date, more than 2,400 patients and healthy volunteers have been treated with fenebrutinib in Phase I, II and III clinical programs across multiple diseases, including MS and other autoimmune disorders.

About the FENopta study

The FENopta study is a global Phase II, randomized, double-blind, placebo-controlled 12-week study to investigate the efficacy, safety and pharmacokinetics of fenebrutinib in 109 adults aged 18-55 years with RMS. The primary endpoint is the total number of new gadolinium-enhancing T1 lesions as measured by MRI scans of the brain at 4, 8 and 12 weeks. Secondary endpoints include the number of new or enlarging T2-weighted lesions as measured by MRI scans of the brain at 4, 8 and 12 weeks, and the proportion of patients free from any new gadolinium-enhancing T1 lesions and new or enlarging T2-weighted lesions as measured by MRI scans of the brain at 4, 8 and 12 weeks. The goal of the FENopta study is to characterize the effect of fenebrutinib on MRI and soluble biomarkers of disease activity and progression, and it includes an optional substudy to measure cerebrospinal fluid biomarkers of neuronal injury. Patients who complete the double-blind period are eligible for an open-label extension study.

About multiple sclerosis

Multiple sclerosis (MS) is a chronic disease that affects nearly one million people in the United States. MS occurs when the immune system abnormally attacks the insulation and support around nerve cells (myelin sheath) in the central nervous system (brain, spinal cord and optic nerves), causing inflammation and consequent damage. This damage can cause a wide range of symptoms, including muscle weakness, fatigue and difficulty seeing, and may eventually lead to disability. Most people with MS experience their first symptom between 20 and 40 years of age, making the disease the leading cause of non-traumatic disability in younger adults. People with all forms of MS experience disease progression – permanent loss of nerve cells in the central nervous system and gradual worsening of disability – at the beginning of their disease even if their clinical symptoms aren’t apparent or don’t appear to be getting worse. Delays in diagnosis and treatment can negatively impact people with MS, both in terms of their physical, mental and financial health. An important goal of treating MS is to slow the progression of disability as early as possible.

Relapsing-remitting MS (RRMS) is the most common form of the disease and is characterized by episodes of new or worsening signs or symptoms (relapses) followed by periods of recovery. Approximately 85% of people with MS are initially diagnosed with RRMS. The majority of people who are diagnosed with RRMS will eventually transition to secondary progressive MS (SPMS), in which they experience steadily worsening disability over time. Relapsing forms of MS (RMS) include people with RRMS and people with SPMS who continue to experience relapses. Primary progressive MS (PPMS) is a debilitating form of the disease marked by steadily worsening symptoms but typically without distinct relapses or periods of remission. Approximately 15% of people with MS are diagnosed with the primary progressive form of the disease. Until the U.S. Food and Drug Administration (FDA) approval of Ocrevus, there had been no FDA-approved treatments for PPMS.

Indications and Important Safety Information

What is Ocrevus?

Ocrevus is a prescription medicine used to treat:

  • Relapsing forms of multiple sclerosis (MS), to include clinically isolated syndrome, relapsing-remitting disease, and active secondary progressive disease, in adults
  • Primary progressive MS, in adults.

It is not known if Ocrevus is safe or effective in children.

Who should not receive Ocrevus?

Do not receive Ocrevus if you have an active hepatitis B virus (HBV) infection.

Do not receive Ocrevus if you have had a life threatening allergic reaction to Ocrevus. Tell your healthcare provider if you have had an allergic reaction to Ocrevus or any of its ingredients in the past.

What is the most important information I should know about Ocrevus?

Ocrevus can cause serious side effects, including:

  • Infusion reactions: Infusion reactions are a common side effect of Ocrevus, which can be serious and may require you to be hospitalized. You will be monitored during your infusion and for at least 1 hour after each infusion of Ocrevus for signs and symptoms of an infusion reaction. Tell your healthcare provider or nurse if you get any of these symptoms:
    • itchy skin
    • rash
    • hives
    • tiredness
    • coughing or wheezing
    • trouble breathing
    • throat irritation or pain
    • feeling faint
    • fever
    • redness on your face (flushing)
    • nausea
    • headache
    • swelling of the throat
    • dizziness
    • shortness of breath
    • fatigue
    • fast heart beat

These infusion reactions can happen for up to 24 hours after your infusion. It is important that you call your healthcare provider right away if you get any of the signs or symptoms listed above after each infusion.

If you get infusion reactions, your healthcare provider may need to stop or slow down the rate of your infusion.

  • Infection:
    • Ocrevus increases your risk of getting upper respiratory tract infections, lower respiratory tract infections, skin infections, and herpes infections. Infections are a common side effect, which can be serious. Tell your healthcare provider if you have an infection or have any of the following signs of infection including fever, chills, or a cough that does not go away. Signs of herpes include cold sores, shingles, genital sores, skin rash, pain, and itching. Signs of more serious herpes infection include: changes in vision, eye redness or eye pain, severe or persistent headache, stiff neck, and confusion. Signs of infection can happen during treatment or after you have received your last dose of Ocrevus. Tell your healthcare provider right away if you have an infection. Your healthcare provider should delay your treatment with Ocrevus until your infection is gone.

    • Progressive Multifocal Leukoencephalopathy (PML): Although no cases have been seen with Ocrevus treatment in clinical trials, PML may happen with Ocrevus. PML is a rare brain infection that usually leads to death or severe disability. Tell your healthcare provider right away if you have any new or worsening neurologic signs or symptoms. These may include problems with thinking, balance, eyesight, weakness on 1 side of your body, strength, or using your arms or legs.

    • Hepatitis B virus (HBV) reactivation: Before starting treatment with Ocrevus, your healthcare provider will do blood tests to check for hepatitis B viral infection. If you have ever had hepatitis B virus infection, the hepatitis B virus may become active again during or after treatment with Ocrevus. Hepatitis B virus becoming active again (called reactivation) may cause serious liver problems including liver failure or death. Your healthcare provider will monitor you if you are at risk for hepatitis B virus reactivation during treatment and after you stop receiving Ocrevus.

    • Weakened immune system: Ocrevus taken before or after other medicines that weaken the immune system could increase your risk of getting infections.

  • Low Immunoglobulins: Ocrevus may cause a decrease in some types of antibodies. Your healthcare provider will do blood tests to check your blood immunoglobulin levels.

Before receiving Ocrevus, tell your healthcare provider about all of your medical conditions, including if you:

  • have ever taken, take, or plan to take medicines that affect your immune system, or other treatments for MS.

  • have ever had hepatitis B or are a carrier of the hepatitis B virus.

  • have had a recent vaccination or are scheduled to receive any vaccinations.
    • You should receive any required ‘live’ or ‘live-attenuated’ vaccines at least 4 weeks before you start treatment with Ocrevus. You should not receive ‘live’ or ‘live-attenuated’ vaccines while you are being treated with Ocrevus and until your healthcare provider tells you that your immune system is no longer weakened.

    • When possible, you should receive any ‘non-live’ vaccines at least 2 weeks before you start treatment with Ocrevus. If you would like to receive any non-live (inactivated) vaccines, including the seasonal flu vaccine, while you are being treated with Ocrevus, talk to your healthcare provider.

    • If you are pregnant or planning to become pregnant talk to your doctor about vaccinations for your baby, as some precautions may be needed.

  • are pregnant, think that you might be pregnant, or plan to become pregnant. It is not known if Ocrevus will harm your unborn baby. You should use birth control (contraception) during treatment with Ocrevus and for 6 months after your last infusion of Ocrevus. Talk with your healthcare provider about what birth control method is right for you during this time.
    • If you become pregnant while taking Ocrevus, talk to your doctor about enrolling in the Ocrevus Pregnancy Registry. You can enroll in this registry by calling 1-833-872-4370 or visiting http://www.Ocrevuspregnancyregistry.com. The purpose of this registry is to monitor the health of you and your baby.

  • are breastfeeding or plan to breastfeed. It is not known if Ocrevus passes into your breast milk. Talk to your healthcare provider about the best way to feed your baby if you take Ocrevus.

Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

What are the possible side effects of Ocrevus?

Ocrevus may cause serious side effects, including:

  • Risk of cancers (malignancies) including breast cancer. Follow your healthcare provider’s instructions about standard screening guidelines for breast cancer.

Most common side effects include infusion reactions and infections.

These are not all the possible side effects of Ocrevus.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

For more information, go to http://www.Ocrevus.com or call 1-844-627-3887.

For additional safety information, please see the full Prescribing Information and Medication Guide.

About Genentech in Neuroscience

Neuroscience is a major focus of research and development at Genentech. Our goal is to pursue groundbreaking science to develop new treatments that help improve the lives of people with chronic and potentially devastating diseases.

Genentech and Roche are investigating more than a dozen medicines for neurological disorders, including MS, SMA, NMOSD, Alzheimer’s, Huntington’s, Parkinson’s, Acute ischemic stroke, Duchenne muscular dystrophy and Angelman syndrome. Together with our partners, we are committed to pushing the boundaries of scientific understanding to solve some of the most difficult challenges in neuroscience today.

About Genentech

Founded more than 40 years ago, Genentech is a leading biotechnology company that discovers, develops, manufactures and commercializes medicines to treat patients with serious and life-threatening medical conditions. The company, a member of the Roche Group, has headquarters in South San Francisco, California. For additional information about the company, please visit http://www.gene.com.

Contacts

Media Contact:

Michelle McCourt, (650) 467-6800

Advocacy Contact:

Lily Atherton, (650) 690-5573

Investor Contacts:

Loren Kalm, (650) 225-3217

Bruno Eschli, 41 61 68-75284

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