– Agios Continues to Advance Two Phase 3 Combination Trials of TIBSOVO® in Newly Diagnosed AML Patients –
CAMBRIDGE, Mass., Oct. 16, 2020 (GLOBE NEWSWIRE) -- Agios Pharmaceuticals, Inc. (NASDAQ:AGIO), a leader in the field of cellular metabolism to treat cancer and rare genetic diseases, today announced the withdrawal of its European Marketing Authorization Application (MAA) for TIBSOVO® (ivosidenib tablets) for the treatment of adult patients with relapsed or refractory acute myeloid leukemia (AML) with an isocitrate dehydrogenase-1 (IDH1) mutation. The decision is based on feedback from the European Medicine Agency’s (EMA) Committee for Medicinal Products for Human Use (CHMP) that the available clinical data from the company’ssingle arm, uncontrolled Phase 1 study do not sufficiently support a positive benefit-risk balance for the proposed indication.
“We are disappointed not to be able to bring TIBSOVO® to AML patients in the EU based on our current data in the relapsed/refractory setting, given the tremendous need for new targeted treatment options for this devastating disease,” said Chris Bowden, M.D., chief medical officer at Agios. “We continue to believe in the benefit of TIBSOVO® for patients with AML and are advancing our two ongoing Phase 3 randomized controlled trials evaluating TIBSOVO® combinations in newly diagnosed AML. If these trials are positive, we anticipate pursuing approvals in these indications in both the U.S. and EU.”
About TIBSOVO® Clinical Development in AMLAgios is currently enrolling two Phase 3 combination trials in newly diagnosed AML:
- AGILE, a Phase 3 trial of TIBSOVO® in combination with azacitidine in newly diagnosed AML patients who are not eligible for intensive chemotherapy
- HOVON150/AMLSG29, an intergroup-sponsored Phase 3 trial evaluating TIBSOVO® or IDHIFA® (enasidenib) in combination with standard induction and consolidation chemotherapy in newly diagnosed AML patients who are eligible for intensive chemotherapy
The majority of AML patients with an IDH1 mutation are eligible for intensive therapy or non-intensive therapy.
About TIBSOVO® (ivosidenib)TIBSOVO® is indicated for the treatment of acute myeloid leukemia (AML) with a susceptible isocitrate dehydrogenase-1 (IDH1) mutation as detected by an FDA-approved test in:
- Adult patients with newly-diagnosed AML who are ≥75 years old or who have comorbidities that preclude use of intensive induction chemotherapy.
- Adult patients with relapsed or refractory AML.
IMPORTANT SAFETY INFORMATION
WARNING: DIFFERENTIATION SYNDROME
Patients treated with TIBSOVO® have experienced symptoms of differentiation syndrome, which can be fatal if not treated. Symptoms may include fever, dyspnea, hypoxia, pulmonary infiltrates, pleural or pericardial effusions, rapid weight gain or peripheral edema, hypotension, and hepatic, renal, or multi-organ dysfunction. If differentiation syndrome is suspected, initiate corticosteroid therapy and hemodynamic monitoring until symptom resolution.
WARNINGS AND PRECAUTIONS
Differentiation Syndrome: See Boxed WARNING. In the clinical trial, 25% (7/28) of patients with newly diagnosed AML and 19% (34/179) of patients with relapsed or refractory AML treated with TIBSOVO® experienced differentiation syndrome. Differentiation syndrome is associated with rapid proliferation and differentiation of myeloid cells and may be life-threatening or fatal if not treated. Symptoms of differentiation syndrome in patients treated with TIBSOVO® included noninfectious leukocytosis, peripheral edema, pyrexia, dyspnea, pleural effusion, hypotension, hypoxia, pulmonary edema, pneumonitis, pericardial effusion, rash, fluid overload, tumor lysis syndrome, and creatinine increased. Of the 7 patients with newly diagnosed AML who experienced differentiation syndrome, 6 (86%) patients recovered. Of the 34 patients with relapsed or refractory AML who experienced differentiation syndrome, 27 (79%) patients recovered after treatment or after dose interruption of TIBSOVO®. Differentiation syndrome occurred as early as 1 day and up to 3 months after TIBSOVO® initiation and has been observed with or without concomitant leukocytosis.
If differentiation syndrome is suspected, initiate dexamethasone 10 mg IV every 12 hours (or an equivalent dose of an alternative oral or IV corticosteroid) and hemodynamic monitoring until improvement. If concomitant noninfectious leukocytosis is observed, initiate treatment with hydroxyurea or leukapheresis, as clinically indicated. Taper corticosteroids and hydroxyurea after resolution of symptoms and administer corticosteroids for a minimum of 3 days. Symptoms of differentiation syndrome may recur with premature discontinuation of corticosteroid and/or hydroxyurea treatment. If severe signs and/or symptoms persist for more than 48 hours after initiation of corticosteroids, interrupt TIBSOVO® until signs and symptoms are no longer severe.
QTc Interval Prolongation: Patients treated with TIBSOVO® can develop QT (QTc) prolongation and ventricular arrhythmias. One patient developed ventricular fibrillation attributed to TIBSOVO®. Concomitant use of TIBSOVO® with drugs known to prolong the QTc interval (e.g., anti-arrhythmic medicines, fluoroquinolones, triazole anti-fungals, 5-HT3 receptor antagonists) and CYP3A4 inhibitors may increase the risk of QTc interval prolongation. Conduct monitoring of electrocardiograms (ECGs) and electrolytes. In patients with congenital long QTc syndrome, congestive heart failure, or electrolyte abnormalities, or in those who are taking medications known to prolong the QTc interval, more frequent monitoring may be necessary.
Interrupt TIBSOVO® if QTc increases to greater than 480 msec and less than 500 msec. Interrupt and reduce TIBSOVO® if QTc increases to greater than 500 msec. Permanently discontinue TIBSOVO® in patients who develop QTc interval prolongation with signs or symptoms of life-threatening arrhythmia.
Guillain-Barré Syndrome: Guillain-Barré syndrome occurred in