The US Food and Drug Administration (US FDA) approved Synribo (omacetaxine mepesuccinate) to treat adults with chronic myelogenous leukemia (CML), a blood and bone marrow disease.
An estimated 5,430 people will be diagnosed with CML in 2012, according to the National Institutes of Health. Synribo is intended to be used in patients whose cancer progressed after treatment with at least two drugs from a class called tyrosine kinase inhibitors (TKIs), also used to treat CML.
Synribo blocks certain proteins that promote the development of cancerous cells. It is injected just under the skin (subcutaneously) twice daily for 14 consecutive days over a 28-day cycle until white blood cell counts normalise (hematologic response). Synribo is then administered twice daily for seven consecutive days over a 28-day cycle as long as patients continue to clinically benefit from therapy.
Richard Pazdur, Director of the Office of Hematology and Oncology Products in FDA’s Center for Drug Evaluation and Research, said, “Today’s approval provides a new treatment option for patients who are resistant to or cannot tolerate other FDA-approved drugs for chronic or accelerated phases of CML. Synribo is the second drug approved to treat CML in the past two months.”
On September 4, 2012, the FDA approved Bosulif (bosutinib) to treat patients with chronic, accelerated or blast phase Philadelphia chromosome positive CML who are resistant to or who cannot tolerate other therapies.
Synribo is approved under the FDA’s accelerated approval programme, which allows the agency to approve a drug to treat a serious disease based on clinical data s