NPLATE 500 micrograms POWDER AND SOLVENT FOR INJECTABLE SOLUTION

Introduction

Package Leaflet: Information for the User

Nplate 250 micrograms powder and solvent for solution for injection

Nplate 500 micrograms powder and solvent for solution for injection

romiplostim

Read all of this leaflet carefully before you start using this medicine because it contains important information for you.

• Keep this leaflet, you may need to read it again.
• If you have any further questions, ask your doctor, pharmacist, or nurse.

• This medicine has been prescribed for you only. Do not pass it on to others. It may harm them, even if their signs of illness are the same as yours.

• If you get any side effects, talk to your doctor, pharmacist, or nurse. This includes any possible side effects not listed in this leaflet. See section 4.

Contents of the pack

1. What is Nplate and what is it used for

1. What you need to know before you use Nplate
2. How to use Nplate
3. Possible side effects
4. Storage of Nplate
5. Contents of the pack and further information
6. Instructions for preparing and administering a Nplate injection

1. What is Nplate and what is it used for

The active substance of Nplate is romiplostim, which is a protein used to treat low platelet counts in patients with primary immune thrombocytopenia (ITP). ITP is a disease in which the immune system of your body destroys its own platelets. Platelets are the blood cells that help heal wounds and form blood clots. Very low platelet counts can cause bruising and serious bleeding.

Nplate is used in adult patients (18 years or older) with ITP who may or may not have had their spleen removed and who have been previously treated with corticosteroids or immunoglobulins that have not worked.

Nplate works by stimulating the bone marrow (the part of the bone that produces blood cells) to produce more platelets. This should help prevent bruising and bleeding related to ITP.

2. What you need to know before you use Nplate

Do not use Nplate

• if you are allergic to romiplostim or any of the other ingredients of this medicine (listed in section 6).

• if you are allergic to other medicines produced using DNA technology that uses the microorganism Escherichia coli(E. coli).

Warnings and precautions

• If you stop taking Nplate, it is likely that you will have a low platelet count again (thrombocytopenia). If you stop taking Nplate, your platelet count will need to be monitored, and your doctor will discuss the necessary precautions with you.

• If you are at risk of developing blood clots or if blood clots are common in your family. The risk of blood clots may also be increased if:
• • you have liver problems;
  • you are an elderly person (≥ 65 years);
  • you are bedridden;
  • you have cancer;
  • you are taking birth control pills or hormone replacement therapy;
  • you have recently undergone surgery or have had an injury;
  • you are obese (overweight);
  • you are a smoker.

Talk to your doctor, pharmacist, or nurse before you start using Nplate.

If you have a very high platelet count, you may be at increased risk of blood clots. Your doctor will adjust your dose of Nplate to make sure your platelet count is not too high.

Changes in the bone marrow (increase in reticulin and possible fibrosis in the bone marrow)

Long-term use of Nplate may cause changes in your bone marrow. These changes can lead to abnormal blood cells or a reduced number of blood cells. A mild form of these changes in the bone marrow is called "increase in reticulin" and has been observed in clinical trials of Nplate. It is not known whether this could progress to a more severe form called "fibrosis". In your blood tests, signs of changes in the bone marrow such as abnormalities may appear. Your doctor will decide if an abnormal blood test means that a bone marrow test should be done or if Nplate treatment should be stopped.

Worsening of blood cancer

Your doctor may decide to perform a bone marrow biopsy if they think it is necessary to make sure you have ITP and not another disease such as Myelodysplastic Syndrome (MDS). If you have MDS and receive Nplate, you may have an increase in blast cell count and worsening of MDS up to progression to acute myeloid leukemia, which is a type of blood cancer.

Loss of response to romiplostim

If you lose response to romiplostim or are unable to maintain a platelet response during treatment with romiplostim, your doctor will investigate the reasons, including whether you have an increase in bone marrow fibers (reticulin) or if you have developed antibodies that neutralize the activity of romiplostim.

Children and adolescents

Nplate is not recommended for use in children under 18 years.

Other medicines and Nplate

Tell your doctor or pharmacist if you are using, have recently used, or might use any other medicines.

If you are also taking other medicines that prevent blood clots (anticoagulant or antiplatelet treatment), there is a higher risk of bleeding. Your doctor will discuss this with you.

If you are taking corticosteroids, danazol, and/or azathioprine, which you may be receiving to treat your ITP, you may need to reduce or stop their administration when combined with Nplate.

Pregnancy and breastfeeding

If you are pregnant or breastfeeding, think you may be pregnant, or are planning to have a baby, ask your doctor or pharmacist for advice before using this medicine. Nplate should not be used during pregnancy unless your doctor considers it necessary.

It is not known whether romiplostim is excreted in human milk. Nplate should not be used during breastfeeding. The decision to stop breastfeeding or stop romiplostim treatment should be made taking into account the benefits of breastfeeding for the baby and the benefits of romiplostim treatment for the mother.

Driving and using machines

Ask your doctor before driving or using machines, as some of the side effects (e.g., temporary episodes of dizziness) may affect your ability to perform these activities safely.

3. How to use Nplate

Nplate must be administered under the direct supervision of a doctor who precisely controls the amount of Nplate administered.

Nplate is administered once a week by injection under the skin (subcutaneously).

The initial dose is 1 microgram of Nplate per kilogram of body weight once a week. Your doctor will tell you how much Nplate to use. Nplate should be injected once a week to maintain platelet counts. Your doctor will regularly take blood samples to evaluate how your platelets are responding and adjust the dose if necessary.

Once your platelet count is controlled, your doctor will continue to perform regular blood tests. Your dose may be adjusted later to maintain long-term control of your platelet count.

Always follow your doctor's instructions for administering Nplate exactly. If you are unsure, ask your doctor again how to use Nplate.

Instructions for preparing and administering a Nplate injection

After proper training, your doctor may also allow you to self-inject Nplate. Please read the instructions at the end of this leaflet on how to inject Nplate, as discussed with your doctor. If your doctor has allowed you to self-inject, you must follow up with them every month to determine if Nplate is working or if you should consider another treatment.

After the first month of self-injecting Nplate, you will need to demonstrate that you can still prepare and inject Nplate correctly.

If you use more Nplate than you should

Your doctor will make sure you receive the correct amount of Nplate. If you have received more Nplate than you should, you may not have any physical symptoms, but your blood platelet levels may become very high, and this may increase the risk of blood clotting. Therefore, if your doctor suspects that you have received more Nplate than you should, it is recommended that you be monitored for any signs or symptoms of side effects and that you receive appropriate treatment immediately.

If your doctor has allowed you to self-inject and you use more Nplate than you should, inform your doctor immediately.

If you use less Nplate than you should

Your doctor will make sure you receive the correct amount of Nplate. If you have received less Nplate than you should, you may not have any physical symptoms, but your blood platelet levels may become low, and this may cause a risk of bleeding. Therefore, if your doctor suspects that you have received less Nplate than you should, it is recommended that you be monitored for any signs or symptoms of side effects and that you receive appropriate treatment immediately.

If your doctor has allowed you to self-inject and you use less Nplate than you should, inform your doctor immediately.

If you forget to use Nplate

If you miss a dose of Nplate, your doctor will tell you when you should receive the next dose.

If your doctor has allowed you to self-inject and you miss an injection, inform your doctor immediately.

If you stop using Nplate

If you stop using Nplate, it is likely that you will have a low platelet count again (thrombocytopenia). Your doctor will decide if you should stop taking Nplate.

Self-injecting Nplate

Your doctor may decide that it is better for you to inject Nplate yourself. Your doctor, nurse, or pharmacist will show you how to inject Nplate. Do not attempt to inject yourself if you have not been trained. It is very important that you prepare Nplate correctly and take the correct dose (see section 7. Instructions for preparing and administering a Nplate injection, at the end of this leaflet).

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.

Very common: may affect more than 1 in 10 people

• headache;
• allergic reaction;
• upper respiratory tract infection.

Common: may affect up to 1 in 10 people

• change in the bone marrow, including an increase in bone marrow fibers (reticulin);
• difficulty sleeping (insomnia);
• dizziness;
• tingling or numbness of the hands or feet (paresthesia);
• migraine;
• redness of the skin (flushing);
• blood clot in an artery of the lung (pulmonary embolism);
• nausea;
• diarrhea;
• abdominal pain;
• indigestion (dyspepsia);
• constipation;
• itching of the skin (pruritus);
• bleeding under the skin (ecchymosis);
• bruising (contusion);
• skin rash;
• joint pain (arthralgia);
• muscle pain or weakness (myalgia);
• pain in hands and feet;
• muscle spasms;
• back pain;
• bone pain;
• fatigue (fatigue);
• reaction at the injection site;
• swelling of the hands and feet (peripheral edema);
• flu-like symptoms (flu-like illness);
• pain;
• weakness (asthenia);
• fever (pyrexia);
• chills;
• bruising (contusion);
• swelling of the face, lips, mouth, tongue, or throat that can cause difficulty swallowing or breathing (angioedema);
• gastroenteritis;

• palpitations;
• inflammation of the sinuses (sinusitis);
• inflammation of the airways that lead to the lungs (bronchitis);
• blood clot in the veins (deep vein thrombosis).

Common: may affect up to 1 in 10 people (may be observed in blood or urine tests)

• low platelet count in the blood (thrombocytopenia) and low platelet count in the blood (thrombocytopenia) after stopping treatment with Nplate;
• high platelet count (thrombocytosis);
• anemia.

Uncommon: may affect up to 1 in 100 people

• change in the bone marrow; bone marrow disorder that causes scarring (myelofibrosis); enlargement of the spleen (splenomegaly); vaginal bleeding (vaginal hemorrhage), rectal bleeding (rectal hemorrhage); mouth bleeding (oral hemorrhage); bleeding at the injection site (hemorrhage at the injection site);
• heart attack (myocardial infarction); increased heart rate;
• dizziness or spinning sensation (vertigo);
• eye problems including: bleeding in the eyes (conjunctival hemorrhage); difficulty focusing or blurred vision (visual accommodation disorder, papilledema, or eye disorder); blindness; itching of the eyes (ocular pruritus); increased tearing (increased lacrimation); or visual disturbances;
• digestive system problems including: vomiting; bad breath (halitosis); difficulty swallowing (dysphagia); indigestion or stomach acid (gastroesophageal reflux disorder); blood in the stool (hematochezia); stomach upset; mouth ulcers or mouth blisters (stomatitis); tooth discoloration (tooth discoloration);
• weight loss; weight gain; alcohol intolerance; loss of appetite (anorexia or decreased appetite); dehydration;
• general feeling of discomfort (malaise); chest pain; irritability; facial swelling (facial edema); feeling of heat; increased body temperature; feeling nervous;
• flu; localized infection; inflammation of the nasal passages and throat (nasopharyngitis);
• nose and throat problems including: cough; runny nose (rhinorrhea); dry throat; shortness of breath or difficulty breathing (dyspnea); nasal congestion; painful breathing (painful respiration);
• joint pain and swelling caused by uric acid (gout);
• muscle stiffness; muscle weakness; shoulder pain; muscle contractions;
• nervous system problems including: involuntary muscle contractions (clonus); distorted sense of taste (dysgeusia); decreased sense of taste (hypogeusia); decreased sensitivity, especially in the skin (hypoesthesia); nerve problems in the arms and legs (peripheral neuropathy); blood clot in the transverse sinus (transverse sinus thrombosis);
• depression; abnormal dreams;
• hair loss (alopecia); sensitivity to light (photosensitivity reaction); acne; allergic skin reaction to contact allergens (contact dermatitis); skin manifestations with rash and blisters (eczema); dry skin; redness of the skin (erythema); severe scaling or exfoliative rash (exfoliative rash); abnormal hair growth; thickening and itching of the skin from repeated scratching (prurigo); bleeding under the skin surface or bruising under the skin (purpura); skin rash with itching (papular rash); skin rash with itching (pruriginous rash); generalized itching rash (urticaria); skin nodule; abnormal skin odor (abnormal skin odor);
• circulation problems including: blood clots in the liver vein (portal vein thrombosis); low blood pressure (hypotension); high blood pressure; blockage of a blood vessel (peripheral embolism); reduced blood flow to the hands, ankles, or feet (peripheral ischemia); swelling and clotting in a vein, which can be extremely soft to the touch (superficial thrombophlebitis or phlebitis); blood clotting (thrombosis);
• a rare disorder characterized by periods of burning pain, redness, and heat in the hands and feet (erythromelalgia).

Uncommon: may affect up to 1 in 100 people (may be observed in blood or urine tests)

• a rare type of anemia in which the red blood cells, white blood cells, and platelets are reduced in number (aplastic anemia);
• increased white blood cell count (leukocytosis);
• excessive production of platelets (thrombocythemia); increased platelet count; abnormal platelet count (abnormal platelet count);
• abnormalities in some blood tests (increased transaminases; increased lactate dehydrogenase in the blood);
• or blood cancer (multiple myeloma);
• proteins in the urine.

Reporting of side effects

If you experience any side effects, talk to your doctor, pharmacist, or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly through the national reporting system listed in Appendix V. By reporting side effects, you can help provide more information on the safety of this medicine.

5. Storage of Nplate

Keep this medicine out of the sight and reach of children.

Do not use this medicine after the expiry date which is stated on the carton and on the label of the vial after EXP. The expiry date is the last day of the month shown.

Store in a refrigerator (between 2°C and 8°C).

Do not freeze.

Store in the original packaging to protect from light.

When stored in the original packaging, this medicine can be out of the refrigerator for a maximum of 30 days at room temperature (up to 25°C).

Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. This will help protect the environment.

6. Container Contents and Additional Information

Nplate Composition

• The active ingredient is romiplostim.

Each vial of Nplate 250 micrograms powder for injectable solution contains a total of 375 micrograms of romiplostim. An additional volume has been added to each vial to ensure that 250 micrograms of romiplostim can be administered. After dissolution, a final volume of 0.5 ml of solution contains 250 micrograms of romiplostim (500 micrograms/ml).

Each vial of Nplate 500 micrograms powder for injectable solution contains a total of 625 micrograms of romiplostim. An additional volume has been added to each vial to ensure that 500 micrograms of romiplostim can be administered. After dissolution, a final volume of 1 ml of solution contains 500 micrograms of romiplostim (500 micrograms/ml).

• The other components are:

Powder: mannitol (E421), sucrose, L-histidine, hydrochloric acid (for pH adjustment), and polysorbate 20.

Solvent: water for injectable preparations.

Product Appearance and Container Contents

Nplate is a white powder for injectable solution supplied in a single-dose 5 ml glass vial.

Nplate is supplied in a package or multiple package with 4 packages. Each package contains:

1 vial of 250 micrograms or 500 micrograms of romiplostim.

1 pre-filled syringe containing 0.72 or 1.2 ml of water for injectable preparations for reconstitution.

1 plunger for the pre-filled syringe.

1 sterile vial adapter.

1 sterile 1 ml syringe with Luer lock.

1 sterile safety needle.

4 alcohol swabs.

Only some package sizes may be marketed.

Marketing Authorization Holder and Manufacturer

Amgen Europe B.V.

Minervum 7061

4817 ZK Breda

Netherlands

Marketing Authorization Holder

Amgen Europe B.V.

Minervum 7061

4817 ZK Breda

Netherlands

Manufacturer

Amgen Technology (Ireland) Unlimited Company

Pottery Road

Dun Laoghaire

Co Dublin

Ireland

Manufacturer

Amgen NV

Telecomlaan 5-7

1831 Diegem

Belgium

You can request more information about this medicine by contacting the local representative of the marketing authorization holder.

Date of Last Revision of this Leaflet

Other Sources of Information

Detailed information on this medicine is available on the European Medicines Agency website http://www.ema.europa.eu

1. Instructions for Preparation and Administration of a Nplate Injection

This section contains information on how to self-inject Nplate. It is important that you do not attempt to self-administer the injection if you have not received training from your doctor, nurse, or pharmacist. If you have questions about how to administer the injection, consult your doctor, nurse, or pharmacist. It is very important that the product is prepared correctly and that the administered dose is correct.

This section is divided into the following sub-sections:

Before Starting

Step 1. Place the Injection Materials

Step 2. Prepare the Vial for Use, Place the Vial Adapter

Step 3. Prepare the Sterile Water Syringe

Step 4. Dissolve Nplate by Injecting Water into the Vial

Step 5. Prepare a New Syringe for Injection

Step 6. Prepare the Needle for Injection

Step 7. Choose and Prepare the Injection Site

Step 8. Inject the Nplate Liquid

Step 9. Disposal of Supplies

Before Starting

Read all the instructions carefully.These instructions are for patients who are already trained by their healthcare professional, such as their doctor, nurse, or pharmacist, in self-injection. If you have not been trained, please contact your healthcare professional.

The Nplate self-injection kit should be kept in the original packaging until use to protect the Nplate vial from light. Keep the Nplate self-injection kit refrigerated between 2°C and 8°C.

Once Nplate is dissolved, inject immediately.

It is possible that there will be excess Nplate after administration of the prescribed dose. Do not reuse Nplate!Any excess dissolved Nplate should be discarded immediately after completing the injection process. The leftover Nplate from the vial must neverbe reused for another injection.

Step 1. Place the Injection Materials

Do the following:

• Select a flat and well-lit work surface, such as a table.

• Take the Nplate self-injection kit out of the refrigerator. Do not use if it is frozen.If you have any doubts about storage, contact your healthcare professional for further instructions.

Check the expiration date included in the self-injection kit. If the expiration date has passed, do not use it.Do not continue and inform your healthcare professional.

• Note:If your doctor has indicated that the Nplate dose requires more than one injection, you will need to use more than one self-injection kit. Follow the steps described in this leaflet and use as many self-injection kits as necessary to complete the prescribed dose of Nplate.

• Make sure you have the following components:

Package of alcohol swabs x4

Plunger for pre-filled syringe of sterile water x1Pre-filled syringe of sterile water x1

1 ml syringe with Luer lock x1Safety needle for injection x1

• Do notopen the items until indicated in the instructions.

• Do notuse altered or damaged components.

• Do notreuse components.

Step 2. Prepare the Vial for Use, Place the Vial Adapter

Use:2 packages of alcohol swabs, 1 vial, and 1 package of vial adapter.

Do the following:

Step 3. Prepare the Sterile Water Syringe

Use:The pre-filled syringe of sterile water and the plunger.

Before starting Step 3, please note the following:

• The transparent plastic plunger must alwaysbe connected before breaking the white tip of the pre-filled syringe of sterile water. Perform step 3a before step 3b.

Do the following:

Step 4. Dissolve Nplate by Injecting Water into the Vial

Use:Pre-filled syringe of sterile water and vial with vial adapter attached.

Before starting Step 4, please note the following:

• Dissolveslowly and carefully. It is a protein and, as such, can be easily damaged by inadequate and excessive mixture agitation.

Do the following:

Before continuing:

• Make surethat all the water is injected from the syringe into the vial before dissolving.

Before continuing:

• Inspectthe dissolved liquid visually for particles and/or discoloration. It should be clear and colorless and completely dissolved.

• Note:If there is any color or particles in the liquid,contact your healthcare professional.

• Make surethat the liquid is completely dissolved before removing the syringe.

• Discard the empty syringein a puncture-proof container. Keep the dissolved Nplate vial. Immediately prepare a new syringe for injection.

• Do notdelay the injection of Nplate

Step 5. Prepare a New Syringe for Injection

Use:A new 1 ml syringe from the package and the vial with dissolved and transparent Nplate.

Before continuing:

• Reviewyour dose before starting this step.
• Note:Nplate liquid is very potent, so dose accuracy and measurement are important.

• Make surethat all air bubbles have been eliminated before injection.

Do the following:

• Perform a final check to ensure the correct amount of liquid for your dose is in the syringeand that all air bubbles have been removed.

Before proceeding:

• Ensurethe correct amount of liquid for your dose remains in the syringe.

• Ensureall air bubbles are removed from the syringe.

Step 6. Prepare the needle for injection

Using:The syringe filled with the measured dose of Nplate and the safety needle.

Do the following:

Step 7. Choose and prepare the injection site

Using:New alcohol swabs.

Do the following:

Step 8. Inject the Nplate liquid

Using:The syringe filled with the measured dose and the needle.

Do the following:

Step 9. Disposal of supplies

Do the following:

• Immediately discard the syringe with the covered needlein a puncture-resistant container.

• Immediately discard the used Nplate vialin an appropriate waste container.

• Ensure all remaining materials are discarded in the appropriate containers.

The Nplate injection device and vial NEVERshould be reused.

• Discardthe used needle and syringe in a puncture-resistant container.

Discardany remaining Nplate in an appropriate waste container. Nplate vial leftovers MUST NOT be reused for another injection.