Median time to best response was 3.2 months with TIBSOVO + AZA vs 4.1 months with VEN + HMA5
Median time to first bone marrow biopsy was 50 days with TIBSOVO + AZA and 61 days with VEN + HMA; therefore, any earlier responses that may have occurred would not have been recorded
aThis retrospective subgroup analysis compares TIBSOVO + AZA (n=143) vs VEN + HMA (n=101).5 The TIBSOVO + AZA cohort is a subset of a larger patient population (n=182) that was previously presented.5,7 Treatment was delivered in both community and academic settings from November 2021 through November 2022 with a minimum follow-up of 6 months.5 Collected data included baseline patient and practice characteristics, mutational testing, treatment patterns and rationale, and efficacy and safety outcomes. Endpoints focused on events likely to occur within 6 months of follow-up, including response rates, tolerability, bridge to transplant, and acute care episodes.
AZA, azacitidine; CR, complete remission; CRi/p, CR with incomplete count recovery or incomplete platelet recovery; EFS, event-free survival; HMA, hypomethylating agent; IC, induction chemotherapy; mIDH1, mutated IDH1.
between both regimens, with the exception of ELN cytogenetic risk categoriesa
Median mIDH1 testing turnaround time was 7 days in both cohorts
because of potential bias in the healthcare professional and/or patient selection of therapies and low internal validity
Only 22.8% of patients treated with VEN + HMA received the full FDA-approved 28 days of VEN during the 28-day cycles and 44.6% received <7 days of VEN per cycle.7
The most common Grade 3+ adverse events were thrombocytopenia (13% with TIBSOVO + AZA vs 10% with VEN + HMA), febrile neutropenia (13% with TIBSOVO + AZA vs 13% with VEN + HMA), neutropenia (13% with TIBSOVO + AZA vs 10% with VEN + HMA), and infection (8% with TIBSOVO + AZA vs 11% with VEN + HMA)
Unscheduled acute care within the first 12 weeks was needed for 40% of patients treated with TIBSOVO + AZA vs 70% of patients treated with VEN + HMA
Differentiation syndrome was observed in 2 patients (1.4%) treated with TIBSOVO + AZA
Treatment discontinuation was 37% for the TIBSOVO + AZA regimen and 38% for the VEN + HMA regimen
TIBSOVO is indicated for patients with a susceptible isocitrate dehydrogenase-1 (IDH1) mutation as detected by an FDA-approved test with:
Newly Diagnosed Acute Myeloid Leukemia (AML)
In combination with azacitidine or as monotherapy for the treatment of newly diagnosed AML in adults 75 years or older, or who have comorbidities that preclude use of intensive induction chemotherapy
Relapsed or Refractory AML
For the treatment of adult patients with relapsed or refractory AML
Differentiation syndrome is associated with rapid proliferation and differentiation of myeloid cells and may be life-threatening or fatal. 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.
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.
Patients treated with TIBSOVO can develop QT (QTc) prolongation and ventricular arrhythmias. Concomitant use of TIBSOVO with drugs known to prolong the QTc interval (eg, 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 can develop in patients treated with TIBSOVO. Monitor patients taking TIBSOVO for onset of new signs or symptoms of motor and/or sensory neuropathy such as unilateral or bilateral weakness, sensory alterations, paresthesias, or difficulty breathing. Permanently discontinue TIBSOVO in patients who are diagnosed with Guillain-Barré syndrome.
The most common adverse reactions including laboratory abnormalities (≥25%) are leukocytes decreased, diarrhea, hemoglobin decreased, platelets decreased, glucose increased, fatigue, alkaline phosphatase increased, edema, potassium decreased, nausea, vomiting, phosphate decreased, decreased appetite, sodium decreased, leukocytosis, magnesium decreased, aspartate aminotransferase increased, arthralgia, dyspnea, uric acid increased, abdominal pain, creatinine increased, mucositis, rash, electrocardiogram QT prolonged, differentiation syndrome, calcium decreased, neutrophils decreased, and myalgia.
Reduce TIBSOVO dose with strong CYP3A4 inhibitors. Monitor patients for increased risk of QTc interval prolongation.
Avoid concomitant use with TIBSOVO.
Avoid concomitant use with TIBSOVO.
Avoid concomitant use with TIBSOVO. If co-administration is unavoidable, monitor patients for increased risk of QTc interval prolongation.
Advise women not to breastfeed.