How ACTEMRA Is Believed to Work

How ACTEMRA is believed to work for systemic JIA

To understand how ACTEMRA may work, let’s start with what may contribute to systemic JIA (SJIA). SJIA occurs when the immune system, the system that protects the body by attacking harmful bacteria and viruses, starts targeting healthy cells.

In a healthy immune system, many different cells protect the body by fighting harmful bacteria and viruses. Our immune system uses messengers called cytokines to tell these cells when and where to attack.

There are many different types of cytokines, including:

Interleukin-1 (IL-1)
Interleukin-6 (IL-6)

In most patients with systemic JIA (SJIA), there are too many cytokine messengers in their bodies. This causes the immune system to attack healthy cells, which can contribute to the signs and symptoms of SJIA.

Take the cytokine IL-6, for example. In order for IL-6 to cause cell activation, it needs to connect to the cell. ACTEMRA works by blocking IL-6 from connecting to the cell.

Without ACTEMRA

IL-6 connects to the cell and tells the cell to activate. When the cell activates, it may contribute to the signs and symptoms of PJIA.

With ACTEMRA

ACTEMRA blocks IL-6 from
connecting to the cell.

The way ACTEMRA is believed to work was suggested in preclinical research. It is not known exactly how it works in the body.

Important Side Effect Information | Tears (perforation) of the Stomach or Intestines

If you have diverticulitis (inflammation in parts of the large intestine), talk to your healthcare provider before taking ACTEMRA. Some people taking ACTEMRA may develop a hole in the wall of their stomach or intestines (also known as a perforation). This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs), corticosteroids, or methotrexate.

Tell your healthcare provider right away if you see any of these side effects: fever, stomach-area pain that does not go away, or if you see a change in your bowel habits.

Please see Important Safety and Side Effect Information. For additional Important Safety Information, please see full Prescribing Information, including BOXED WARNING and Medication Guide.

See the results

See how other children with SJIA responded to ACTEMRA in a clinical trial.

Learn more »

Coverage and patient assistance

At Genentech, we believe your child should have access to the medicine they need.

Learn more »

INDICATIONS

What does ACTEMRA treat?

ACTEMRA is a prescription medicine called an interleukin-6 (IL-6) receptor antagonist.

ACTEMRA is used:

To treat adults with moderately to severely active rheumatoid arthritis (RA) after at least one other medicine called a disease modifying antirheumatic drug (DMARD) has been used and did not work well
To treat adults with giant cell arteritis (GCA)
To treat patients with active polyarticular juvenile idiopathic arthritis (PJIA) 2 years of age and older
To treat patients with active systemic juvenile idiopathic arthritis (SJIA) 2 years of age and older
For slowing the rate of decline in lung function in adults with systemic sclerosis-associated interstitial lung disease (SSc-ILD) (also known as scleroderma-associated ILD).
To treat hospitalized adults with coronavirus disease 2019 (COVID-19) receiving systemic corticosteroids and requiring supplemental oxygen or mechanical ventilation.
ACTEMRA is not approved for subcutaneous use in people with COVID-19.

It is not known if ACTEMRA is safe and effective in children with PJIA or SJIA under 2 years of age or in children with conditions other than PJIA or SJIA.

ACTEMRA can cause serious side effects

Serious Infections

ACTEMRA changes the way your immune system works. This can make you more likely to get infections or make any current infection worse. Some people have serious infections while taking ACTEMRA, including tuberculosis (TB), and infections caused by bacteria, fungi, or viruses that can spread throughout the body. Some people have died from these infections. Your healthcare provider should assess you for TB before starting, during and after treatment with ACTEMRA (except if you have COVID-19).

Before starting ACTEMRA, tell your healthcare provider if you have:

an infection, think you may have an infection, are being treated for an infection, or get a lot of infections that return. Symptoms of an infection, with or without a fever, include sweating or chills; shortness of breath; warm, red or painful skin or sores on your body; feeling very tired; muscle aches; blood in phlegm; diarrhea or stomach pain; cough; weight loss; burning when you urinate or urinating more than normal
any of the following conditions that may give you a higher chance of getting infections: diabetes, HIV, or a weak immune system
tuberculosis (TB), or have been in close contact with someone with TB
live or have lived, or have traveled to certain parts of the United States where there is an increased chance of getting fungal infections. These parts include the Ohio and Mississippi River valleys and the Southwest
hepatitis B or have had hepatitis B

If you have COVID-19, your healthcare provider should monitor you for signs and symptoms of new infections during and after treatment with ACTEMRA.

Who should not take ACTEMRA?

Do not take ACTEMRA if you are allergic to tocilizumab, or any of the ingredients in ACTEMRA.

Be sure to talk to your healthcare provider if you see any signs of these serious side effects:

Tears (perforation) of the Stomach or Intestines

Tell your healthcare provider right away if you see any of these side effects: fever, new onset stomach-area pain that does not go away, or if you see a change in your bowel habits.

Liver problems (Hepatotoxicity)

Some people have experienced serious life-threatening liver problems, which required liver transplant or led to death. Your healthcare provider may tell you to stop taking ACTEMRA if you develop new or worsening liver problems during treatment with ACTEMRA. Tell your healthcare provider right away if you have any of the following symptoms:

feeling tired (fatigue)
lack of appetite for several days or longer (anorexia)
yellowing of your skin or the whites of your eyes (jaundice)
abdominal swelling and pain on the right side of the stomach-area
light colored stools
weakness
nausea and vomiting
confusion
dark “tea-colored” urine

Changes in Blood Test Results

Your healthcare provider should do blood tests before you start receiving ACTEMRA. If you have rheumatoid arthritis (RA) or giant cell arteritis (GCA), or systemic sclerosis-interstitial lung disease (SSc-ILD) your healthcare provider should do blood tests 4 to 8 weeks after you start receiving ACTEMRA for the first 6 months and then every 3 months after that. If you have polyarticular juvenile idiopathic arthritis (PJIA) you will have blood tests done every 4 to 8 weeks during treatment. If you have systemic juvenile idiopathic arthritis (SJIA) you will have blood tests done every 2 to 4 weeks during treatment. These blood tests are to check for the following side effects of ACTEMRA:

Low neutrophil count: neutrophils are white blood cells that help the body fight infection
Low platelet count: platelets are blood cells that help with clotting, which stops bleeding
Increase in liver function test levels
Increase in blood cholesterol levels: your cholesterol levels should be checked 4 to 8 weeks after you start receiving ACTEMRA.

Your healthcare provider will determine how often you will have follow-up blood tests. Make sure you get all your follow-up blood tests done as ordered by your healthcare provider.

You should not receive ACTEMRA if your neutrophil and platelet counts are too low or your liver function test levels are too high. Changes in blood test results may cause your healthcare provider to stop your ACTEMRA treatment for a time or change your dose.

Cancer

ACTEMRA may increase your risk of certain cancers by changing the way your immune system works.

Hepatitis B Infection

If you have or are a carrier of the hepatitis B virus (a virus that affects the liver), the virus may become active while you use ACTEMRA. Your healthcare provider may do blood tests before you start treatment with ACTEMRA and while you are using ACTEMRA. Tell your healthcare provider if you have any signs of these symptoms:

feel very tired
skin or eyes look yellow
little or no appetite
vomiting
clay-colored bowel movements
fevers
chills
stomach discomfort
muscle aches
dark urine
skin rash

Serious Allergic Reactions

Serious allergic reactions, including death, can happen with ACTEMRA. These reactions can happen with any infusion or injection of ACTEMRA, even if they did not occur with an earlier infusion or injection. Stop taking ACTEMRA, contact your healthcare provider, and get emergency help right away if you have any of the following signs of a serious allergic reaction:

swelling of the face, lips, mouth, or tongue
trouble breathing
wheezing
severe itching
skin rash, hives, redness, or swelling outside of the injection site area
dizziness or fainting
fast heartbeat or pounding in your chest (tachycardia)
sweating

Nervous System Problems

While rare, Multiple Sclerosis has been diagnosed in people who take ACTEMRA. It is not known what effect ACTEMRA may have on some nervous system disorders.

What should I tell my healthcare provider before receiving ACTEMRA?

ACTEMRA may not be right for you. Before receiving ACTEMRA, tell your healthcare provider if you:

have an infection
have liver problems
have any stomach-area (abdominal) pain or been diagnosed with diverticulitis or ulcers in your stomach or intestines
have had a reaction to tocilizumab or any of the ingredients in ACTEMRA before
have or had a condition that affects your nervous system, such as multiple sclerosis
have recently received or are scheduled to receive a vaccine
plan to have surgery or a medical procedure
have any other medical conditions
plan to become pregnant or are pregnant. It is not known if ACTEMRA will harm your unborn baby.
plan to breast-feed or are breast-feeding. You and your healthcare provider should decide if you will take ACTEMRA or breast-feed. You should not do both.
are taking any medications, including prescription and nonprescription medicines, vitamins, and herbal supplements.

The most common side effects of ACTEMRA include:

upper respiratory tract infections (common cold, sinus infections)
headache
increased blood pressure (hypertension)
injection site reactions

Tell your healthcare provider about any side effect that bothers you or does not go away. These are not all the possible side effects of ACTEMRA.

ACTEMRA & Pregnancy

Tell your healthcare provider if you are planning to become pregnant, are pregnant, plan to breast-feed, or are breast-feeding. You and your healthcare provider should decide if you will take ACTEMRA or breast-feed. You should not do both.

Tell your healthcare provider if you have any side effects. You may report side effects to the FDA at 1-800-FDA-1088. You may also report side effects to Genentech at 1-888-835-2555.

Please see full Prescribing Information and the Medication Guide, including Serious Side Effects, for more Important Safety Information.

How ACTEMRA Is Believed to Work