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Imatinib Teva

Active Substance: imatinib
Common Name: imatinib
ATC Code: L01XE01
Marketing Authorisation Holder: Teva B.V.
Active Substance: imatinib
Status: Authorised
Authorisation Date: 2013-01-08
Therapeutic Area: Leukemia, Myelogenous, Chronic, BCR-ABL Positive
Pharmacotherapeutic Group: Antineoplastic agents, protein-kinase inhibitor

Therapeutic Indication

Imatinib Teva is indicated for the treatment of:

  • paediatric patients with newly diagnosed Philadelphia-chromosome (bcr-abl)-positive (Ph+) chronic myeloid leukaemia (CML) for whom bone-marrow transplantation is not considered as the first line of treatment;
  • paediatric patients with Ph+ CML in chronic phase after failure of interferon-alpha therapy, or in accelerated phase or blast crisis;
  • adult patients with Ph+ CML in blast crisis.

The effect of imatinib on the outcome of bone-marrow transplantation has not been determined.

In adult and paediatric patients, the effectiveness of imatinib is based on overall haematological and cytogenetic response rates and progression-free survival in CML.

What is Imatinib Teva?

Imatinib Teva is a medicine that contains the active substance imatinib. It is available as capsules (100 and 400 mg) and tablets (100 and 400 mg).

Imatinib Teva is a ‘generic medicine’. This means that Imatinib Teva is similar to a ‘reference medicine’ already authorised in the European Union (EU) called Glivec.

What is Imatinib Teva used for?

Imatinib Teva is an anticancer medicine. It is used to treat:

  • children with chronic myeloid leukaemia (CML), a cancer of the white blood cells in which granulocytes (a type of white blood cell) start growing out of control. Imatinib Teva is used when the patients are ‘Philadelphia chromosome positive’ (Ph+). This means that some of their genes have re‑arranged themselves to form a special chromosome called the Philadelphia chromosome. Imatinib Teva is used in children who have been newly diagnosed with Ph+ CML and who are not eligible for a bone marrow transplant. It is also used in children in the ‘chronic phase’ of the disease if it is not responding to interferon alpha (another anticancer medicine), and in more advanced phases of the disease (‘accelerated phase’ and ‘blast crisis’);
  • adults with Ph+ CML in blast crisis;
  • adults and children with Ph+ acute lymphoblastic leukaemia (ALL), a type of cancer in which lymphocytes (another type of white blood cell) multiply too quickly. It is used in combination with other anticancer medicines in patients who have been newly diagnosed with Ph+ ALL. It is also used alone in adults to treat Ph+ ALL that has returned following previous treatment, or is not responding to other medicines;
  • adults with myelodysplastic or myeloproliferative diseases (MD/MPD), a group of diseases in which the body produces large numbers of abnormal blood cells. It is used to treat adults with MD/MPD who have re-arrangements of the gene for platelet-derived growth factor receptor (PDGFR);
  • adults with advanced hypereosinophilic syndrome (HES) or chronic eosinophilic leukaemia (CEL), diseases in which eosinophils (another type of white blood cell) start growing out of control. It is used to treat adults with HES or CEL who have a specific re‑arrangement of two genes called FIP1L1 and PDGFRα;
  • adults with dermatofibrosarcoma protuberans (DFSP), a type of cancer (sarcoma) in which cells in the tissue beneath the skin divide uncontrollably. It is used to treat adults with DFSP that cannot be removed with surgery, and in adults who are not eligible for surgery when the cancer has returned after treatment or has spread to other parts of the body.

The medicine can only be obtained with a prescription.

How is Imatinib Teva used?

Imatinib Teva treatment should be started by a doctor who has experience in the treatment of patients with cancers of the blood. Imatinib Teva is given by mouth with a meal and a large glass of water to reduce the risk of irritation of the stomach and gut. The dose depends on the age and condition of the patient, and the response to treatment, but it should not exceed 800 mg a day. For more information, see the package leaflet.

How does Imatinib Teva work?

The active substance in Imatinib Teva, imatinib, is a protein-tyrosine kinase inhibitor. This means that it blocks some specific enzymes known as tyrosine kinases. These enzymes can be found in certain receptors in cancer cells, including the receptors that are involved in stimulating the cells to divide uncontrollably. By blocking these receptors, Imatinib Teva helps to control cell division.

How has Imatinib Teva been studied?

Because Imatinib Teva is a generic medicine, studies in patients have been limited to tests to determine that the tablets and capsules are bioequivalent to the reference medicine, Glivec. Two medicines are bioequivalent when they produce the same levels of the active substance in the body.

What are the benefits and risks of Imatinib Teva?

Because Imatinib Teva is a generic medicine and is bioequivalent to the reference medicine, its benefits and risks are taken as being the same as the reference medicine’s.

Why has Imatinib Teva been approved?

The CHMP concluded that, in accordance with EU requirements, Imatinib Teva has been shown to have comparable quality and to be bioequivalent to Glivec. Therefore, the CHMP’s view was that, as for Glivec, the benefit outweighs the identified risk. The Committee recommended that Imatinib Teva be given marketing authorisation.

What measures are being taken to ensure the safe and effective use of Imatinib Teva?

A risk management plan has been developed to ensure that Imatinib Teva is used as safely as possible. Based on this plan, safety information has been included in the summary of product characteristics and the package leaflet for Imatinib Teva, including the appropriate precautions to be followed by healthcare professionals and patients.

Other information about Imatinib Teva

The European Commission granted a marketing authorisation valid throughout the European Union for Imatinib Teva on 8 January 2013.

For more information about treatment with Imatinib Teva, 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.