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

Administration: Brineura is only given by infusion into the fluid of the brain (known as an intraventricular injection) and using sterile technique to reduce the risk of infection. An intraventricular access device or port must be in place at least 5 to 7 days prior to the first infusion.

• Prior to administration, it is important to discuss your child’s medical history with their doctor
• Tell the doctor if they are sick or taking any medication and if they are allergic to any medicines

Meningitis and other device-related infections: Intraventricular access device-related infections, including meningitis, were observed with Brineura treatment. Infections required treatment with antibiotics and removal of the access device. If any signs of infection or meningitis occur, contact your child’s doctor immediately. The signs and symptoms of infections may not be readily apparent in patients with CLN2 disease.

• Your child’s doctor should vigilantly be looking for signs and symptoms of infection, including meningitis, during treatment with Brineura
• Your child’s doctor should inspect the scalp and collect samples of your child’s CSF prior to each infusion of Brineura, to check for infections and that there is no device failure
• Signs of infection on or around the device insertion site may include redness, tenderness, or discharge

Device-related complications such as device leakage, device failure, extravasation of CSF fluid, or bulging of the scalp around or above the intraventricular access device have occurred. In case of intraventricular access device-related complications, Brineura infusions may be discontinued.

Material degradation of the intraventricular access device reservoir was reported after approximately 4 years of administration, which may impact the effective and safe use of the device. During testing such material degradation was recognized after approximately 105 perforations of the intraventricular access device. The intraventricular access device should be replaced prior to 4 years of single-puncture administrations, which equates to approximately 105 administrations of Brineura.

Cardiovascular side effects: Low blood pressure and/or slow heart rate may occur during and following the infusion of Brineura. Contact your child’s healthcare provider immediately if these reactions occur. As part of the infusion, the healthcare provider will monitor vital signs (blood pressure, heart rate) before infusion starts, periodically during infusion, and post-infusion, and assess the patient’s status after administration to determine if continued observation may be necessary. Additional monitoring is required for patients with a history of cardiac abnormalities. In patients without cardiac abnormalities, regular 12-lead electrocardiogram (ECG) evaluations should be performed every 6 months.

Hypersensitivity reactions including serious and severe allergic reactions (anaphylaxis) may occur. Symptoms of anaphylaxis may include fever, respiratory distress, rash, vomiting, and irritability, and may occur during treatment or within several hours of Brineura infusion. Seek immediate medical care should signs and symptoms of anaphylaxis occur. Your child may receive medication such as antihistamines before Brineura infusions to reduce the risk of reactions.

If anaphylaxis occurs, you and your child’s healthcare providers should consider the risks and benefits of readministration of Brineura. If the decision is made to readminister Brineura after the occurrence of anaphylaxis, the healthcare providers should ensure appropriately trained personnel and equipment for emergency resuscitation (including epinephrine and other emergency medicines) are readily available during infusion and will start the subsequent infusion at approximately one-half the initial infusion rate at which the anaphylactic reaction occurred.

The most common side effects reported during Brineura infusions included:

• Fever, problems with the electrical activity of the heart, decreased or increased protein in the fluid of the brain, vomiting, seizures, device-related complications, hypersensitivity, collection of blood outside of blood vessels (hematoma), headache, irritability, increased white blood cell count in the fluid of the brain, device-related infection, slow heart rate, feeling jittery, and low blood pressure

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch or call 1–800-FDA-1088.

Please click here to see full Prescribing Information or visit www.Brineura.com.