Active Substance: brentuximab vedotin
Common Name: brentuximab vedotin
ATC Code: L01XC12
Marketing Authorisation Holder: Takeda Pharma A/S
Active Substance: brentuximab vedotin
Authorisation Date: 2012-10-25
Therapeutic Area: Hodgkin Disease Lymphoma, Non-Hodgkin
Pharmacotherapeutic Group: Antineoplastic agents
Adcetris is indicated for the treatment of adult patients with relapsed or refractory CD30+ Hodgkin lymphoma (HL):
- following autologous stem-cell transplant (ASCT) or;
- following at least two prior therapies when ASCT or multi-agent chemotherapy is not a treatment option.
Adcetris is indicated for the treatment of adult patients with relapsed or refractory systemic anaplastic large-cell lymphoma (sALCL).
What is Adcetris?
Adcetris is a medicine that contains the active substance brentuximab vedotin. It is available as a powder that is made up into a solution for infusion (drip into a vein).
What is Adcetris used for?
Adcetris is used to treat adults with Hodgkin lymphoma (HL, a type of cancer that originates from blood cells in the lymphatic system, a part of the immune system) when the tumour cells are CD30-positive (when they have a protein called CD30 on their surface). It is used:
- when the cancer has come back or has not responded to an autologous stem-cell transplant (a transplant of the patient's own blood-producing cells);
- when the cancer has come back or has not responded to at least two previous therapies and when autologous stem-cell transplant or multi-agent chemotherapy (a combination of anticancer medicines) are not treatment options.
Adcetris is also used to treat systemic anaplastic large cell lymphoma (sALCL, a CD30-positive cancer of white blood cells called T lymphocytes), when the cancer has come back or has not responded to other treatments.
Because the number of patients with HL and sALCL is low, the diseases are considered ‘rare’, and Adcetris was designated an ‘orphan medicine’ (a medicine used in rare diseases) on 15 January 2009.
The medicine can only be obtained with a prescription.
How is Adcetris used?
Adcetris should be given under the supervision of a doctor who has experience in the use of cancer treatments.
The recommended dose is 1.8 mg per kilogram body weight given by a 30-minute infusion into a vein every three weeks. Patients should be monitored during and after the infusion for certain side effects and they should have full blood counts checked before every dose of Adcetris. Treatment should continue unless the disease gets worse or severe side effects develop. Patients who improve or whose disease stabilises may receive treatment for up to one year.
The doctor may decide to interrupt or stop treatment if the patient develops certain serious side effects. See the summary of product characteristics (also part of the EPAR) for more information.
How does Adcetris work?
The active substance in Adcetris, brentuximab vedotin, is made up of a CD30 monoclonal antibody (a type of protein that attaches to CD30). The monoclonal antibody is attached to monomethyl auristatin E, a cytotoxic (cell-killing) molecule. The monoclonal antibody delivers monomethyl auristatin E to the CD30-positive cancer cells, and once inside the cancer cells, it stops them from dividing, which eventually kills the cancer cells.
How has Adcetris been studied?
The effects of Adcetris were first tested in experimental models before being studied in humans.
In Hodgkin lymphoma, Adcetris has been studied in one main study in 102 patients with CD30-positive HL, who had previously received an autologous stem cell transplant and whose cancer had come back or had not responded to previous treatment. In addition, the company provided data on 40 patients with CD30-positive HL, whose cancer had come back or had not responded to at least two prior therapies and who are not eligible for autologous stem cell transplant or multi-agent chemotherapy.
In sALCL, Adcetris has been studied in one main study in 58 sALCL patients whose cancer had come back or had not responded to treatment.
In both studies the main measure of effectiveness was the percentage of patients who responded completely or partially to treatment. Response to treatment was assessed using body scans and patients’ clinical data. A complete response is when a patient has no signs of the cancer.
What benefit has Adcetris shown during the studies?
In the study in HL, 75% of patients (76 out of 102) responded partially or completely to treatment. A complete response was observed in 33% of patients (34 out of 102). The data on the 40 patients showed that 55% of patients (22 out of 40) responded to treatment. For 23% of these patients (9 out of 40) a complete response was observed.
In the sALCL study, 86% of patients (50 out of 58) responded partially or completely to treatment and this response was complete for 59% of them (34 out of 58).
What is the risk associated with Adcetris?
Serious side effects reported with Adcetris include neutropenia (low white-blood-cell counts), thrombocytopenia (low blood platelet counts), constipation, diarrhoea, vomiting, pyrexia (fever), peripheral motor neuropathy (damage to the nerves causing difficulty coordinating movements) and peripheral sensory neuropathy (nerve damage in the hands and feet), hyperglycaemia (high blood glucose levels), demyelinating polyneuropathy (a neurological disorder characterised by slowly progressive weakness and a loss of sensation in the legs and arms), tumour-lysis syndrome (a potentially fatal complication due to the breakdown of cancer cells) and Stevens-Johnson syndrome (a life-threatening type of allergic reaction affecting the skin and mucous membranes). The most frequently observed side effects include peripheral sensory neuropathy, fatigue, nausea (feeling sick), diarrhoea, neutropenia, vomiting, pyrexia and infections. For the full list of all side effects reported with Adcetris, see the package leaflet.
Adcetris must not be used in people who are hypersensitive (allergic) to brentuximab vedotin or any of the other ingredients. It must not be used together with bleomycin (another anticancer medicine) as this combination is toxic to the lungs.
Why has Adcetris been approved?
The CHMP noted that, despite the fact that there were limited data and the studies did not compare Adcetris with a control treatment, Adcetris was considered beneficial for patients with HL and sALCL whose cancer had come back or had not responded to therapy. In these patients, who generally have poor outcomes and lack suitable treatments, Adcetris could lead to a complete response or could enable them to undergo potentially curative treatments. The Committee further noted that the overall safety profile of Adcetris was acceptable for these patients. Therefore, the CHMP decided that Adcetris’s benefits are greater than its risks and recommended that it be given marketing authorisation.
Adcetris has been given ‘conditional approval’. This means that there is more evidence to come about, especially about the medicine’s long-term effects, such as duration of response and survival, which are needed to confirm the positive benefit-risk balance. Every year, the European Medicines Agency will review any new information that may become available and this summary will be updated as necessary.
What information is still awaited for Adcetris?
The company that markets the medicine will provide follow-up data on patients’ survival from the main studies submitted in HL and sALCL. In addition, the company will carry out two further studies on the benefits of the medicine and a safety study in a larger population of HL and sALCL patients.
Other information about Adcetris
The European Commission granted a marketing authorisation valid throughout the European Union for Adcetris on 25 October 2012.
For more information about treatment with Adcetris, read the package leaflet (also part of the EPAR) or contact your doctor or pharmacist.
Source: European Medicines Agency
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