Active Substance: adalimumab
Common Name: adalimumab
ATC Code: L04AB04
Marketing Authorisation Holder: AbbVie Ltd
Active Substance: adalimumab
Authorisation Date: 2003-09-08
Therapeutic Area: Spondylitis, Ankylosing Uveitis Arthritis, Rheumatoid Colitis, Ulcerative Crohn Disease Arthritis, Psoriatic Psoriasis Arthritis, Juvenile Rheumatoid
Pharmacotherapeutic Group: Immunosuppressants
Please refer to the product information document.
What is Humira and what is it used for?
Humira is a medicine that acts on the immune system and is used to treat the following conditions:
- plaque psoriasis, a disease causing red, scaly patches on the skin
- psoriatic arthritis (red, scaly patches on the skin with inflammation of the joints)
- rheumatoid arthritis (a disease causing inflammation of the joints)
- axial spondyloarthritis (inflammation of spine causing back pain), including ankylosing spondylitis and when there is no damage on X-ray but clear signs of inflammation
- Crohn’s disease (a disease causing inflammation of the gut)
- ulcerative colitis (a disease causing inflammation and ulcers in the lining of the gut)
- polyarticular juvenile idiopathic arthritis and active enthesitis-related arthritis (both rare diseases causing inflammation in the joints)
- hidradenitis suppurativa (acne inversa), a chronic skin disease that causes lumps, abscesses (collections of pus) and scarring on the skin
- non-infectious uveitis (inflammation of the layer beneath the white of the eyeball).
Humira is mostly used in adults when their conditions are severe, moderately severe or getting worse, or when patients cannot use other treatments. For detailed information on the use of Humira in all conditions, including when it can be used in children, see the summary of product characteristics.
Humira contains the active substance adalimumab.
How is Humira used?
Humira is given as an injection under the skin, usually every 2 weeks. The dose and frequency of injection depends on the condition to be treated and the dose for a child is calculated according to the child’s weight and height.
Treatment with Humira must be started and supervised by a doctor who has experience in the treatment of the diseases that Humira is used for. Doctors treating uveitis should also take advice from doctors who have experience of using Humira.
Humira can only be obtained by prescription. For further information, see the package leaflet.
How does Humira work?
The active substance in Humira, adalimumab, is a monoclonal antibody (a type of protein) that has been designed to recognise and attach to a substance in the body called tumour necrosis factor (TNF). This substance is involved in causing inflammation and is found at high levels in patients with the diseases that Humira is used to treat. By attaching to TNF, adalimumab blocks its activity, thereby reducing inflammation and other symptoms of the diseases.
What benefits of Humira have been shown in studies?
More than twenty main studies involving over 9,500 patients have looked at the effects of Humira in reducing symptoms of inflammatory conditions. The studies included adult patients for the most part, but included children in studies for Crohn’s disease, plaque psoriasis, polyarticular juvenile idiopathic arthritis and enthesitis-related arthritis.
Humira, when used as directed, has been shown in clinical trials to be effective at reducing important symptoms of each of the conditions for which it is approved. Below is a brief description of the studies and their results:
- In studies in adults and children with plaque psoriasis, a higher proportion of patients receiving Humira had improvements in symptoms compared with patients receiving methotrexate.
- Humira also produced a greater improvement in symptoms than placebo (a dummy treatment) in studies of psoriatic arthritis, ankylosing spondylitis, axial spondyloarthritis without evidence in the X-ray of ankylosing spondylitis but with clear signs of inflammation, and induction and maintenance phases of treatment for Crohn’s disease, psoriasis and ulcerative colitis.
- In rheumatoid arthritis, the greatest reductions in symptoms were seen in the studies examining Humira as an add-on to methotrexate: around two-thirds of the patients adding Humira had at least a 20% reduction in symptoms after six months, compared with a quarter of those adding placebo. Patients adding Humira also had less joint damage and less reduction in physical function after a year. In patients who had not taken methotrexate in the past, the combination of Humira and methotrexate was also more effective than methotrexate alone.
In polyarticular juvenile idiopathic arthritis, around 40% of patients aged between 4 and 17 years receiving Humira, either alone or in combination with methotrexate, had a flare-up of arthritis, compared with around 69% of those receiving placebo. Fewer patients receiving Humira with methotrexate developed antibodies against Humira (which can prevent its action), so the results favoured the use of Humira with methotrexate over Humira used alone.
The study in younger children (aged 2 to 4 years) showed that the majority of children responded well to Humira treatment and this response was maintained after 24 weeks. For enthesitis-related arthritis, treatment with Humira resulted in fewer swollen and tender joints compared with placebo.
- In hidradenitis suppurativa, 59% of patients receiving Humira in one main study and 42% of patients in another achieved at least a 50% reduction in abscesses and nodules after 12 weeks, without any increase in abscess count or fistulas. The proportions of patients taking placebo who achieved this goal were 28% and 26% respectively.
- In uveitis, Humira was found effective in 2 studies. The first study involved patients whose disease was not controlled with high doses of corticosteroids. In this study treatment failed in about 79% of patients receiving placebo compared with about 55% given Humira. Another study involved patients whose uveitis was under control with a corticosteroid but whose disease flared-up when the corticosteroid dose was reduced or stopped. In this second study, treatment failed in about 55% of patients receiving placebo compared with 39% receiving Humira.
More information may be found in the products summary of product characteristics, also part of the EPAR.
What are the risks associated with Humira?
The most common side effects with Humira (seen in more than 1 patient in 10) are infections in the nose and throat, sinuses and upper respiratory tract, injection site reactions (redness, itching, bleeding, pain or swelling), headache and muscle and bone pain.
Humira and other medicines of its class may also affect the ability of the immune system to fight off infections and cancer, and there have been some cases of serious infections and blood cancers in patients using Humira.
Other rare serious side effects (seen in between 1 in 10,000 and 1 in 1,000 patients) include failure of bone marrow to produce blood cells, disorder of the nerves, lupus and lupus-like conditions (where the immune system attacks the patient’s own tissues, causing inflammation and organ damage), and Stevens-Johnson syndrome (a serious skin condition).
Humira must not be used in patients with active tuberculosis or other severe infections, or in patients with moderate to severe heart failure (an inability of the heart to pump enough blood around the body). For the full list of restrictions with Humira, see the package leaflet.
Why is Humira approved?
Humira has been studied extensively and has been shown to be effective at reducing symptoms in patients with inflammatory conditions.
Some rare serious side effects have been reported, including serious infections. Warnings and information on how to manage these risks are included in the product information and patients or their carers must be given a special alert card summarising the safety information about the medicine.
The Agency’s Committee for Medicinal Product for Human Use (CHMP) concluded that benefits of Humira outweigh its risks in its approved uses and recommended that it be given marketing authorisation.
What measures are being taken to ensure the safe and effective use of Humira?
The company that markets Humira must provide educational packs for doctors who will prescribe Humira. These packs will include information on the safety of the medicine and an alert card to be given to patients.
Recommendations and precautions to be followed by healthcare professionals and patients for the safe and effective use of Humira have also been included in the summary of product characteristics and the package leaflet.
Other information about Humira
The European Commission granted a marketing authorisation valid throughout the European Union for Humira on 8 September 2003.
For more information about treatment with Humira, read the package leaflet (also part of the EPAR) or contact your doctor or pharmacist.
Source: European Medicines Agency
Disclaimer: Every effort has been made to ensure that the information provided here is accurate, up-to-date and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. This information has been compiled for use by healthcare practitioners and consumers in the United States. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective or appropriate for any given patient. If you have questions about the substances you are taking, check with your doctor, nurse or pharmacist.