TIBSOVO (ivosidenib tablets) was studied in patients with difficult-to-treat AML1
Selected baseline demographics and disease characteristics (N=28)1 | |
---|---|
Median age, years (min, max) | 77 (64, 87) |
≥75 years | 68% |
ECOG PS | |
0 | 21% |
1 | 57% |
2 | 18% |
3 | 4% |
ELN risk category | |
Intermediate | 32% |
Adverse | 68% |
Transfusion dependent at baselinea | 61% |
Type of AML | |
De novo AML | 21% |
AML-MRC | 68% |
Therapy-related AML | 11% |
History of MDS2 | 50% |
Prior HMA for antecedent hematologic disorder | 46% |
aPatients were defined as transfusion dependent at baseline if they received any RBC or platelet transfusion occurring within 56 days prior to the first dose of TIBSOVO.1
See efficacy data for secondary AML patients›- Comorbidities that precluded the use of intensive induction chemotherapy included baseline ECOG PS ≥2, severe cardiac or pulmonary disease, hepatic impairment with bilirubin >1.5 times the upper limit of normal, or creatinine clearance <45 mL/min1
Many patients in the clinical trials had poor performance status and were not good candidates for myelosuppressive regimens1
46% of patients had prior HMA therapy for an antecedent hematologic disorder1
50% of patients had a history of MDS2
AML, acute myeloid leukemia; ECOG PS, Eastern Cooperative Oncology Group Performance Status; ELN, European LeukemiaNet; HMA, hypomethylating agent; IC, induction chemotherapy; MDS, myelodysplastic syndromes; MRC, myelodysplasia-related changes; RBC, red blood cell.
TIBSOVO delivered strong responses as a once-daily oral treatment in a difficult-to-treat disease1,3
bCR was defined as <5% blasts in the bone marrow and no Auer rods, absence of extramedullary disease, full recovery of peripheral blood counts (absolute neutrophil count >1000/μL and platelets >100,000/μL), and independence of red blood cell transfusions.1,2 CRh was defined as <5% blasts in the bone marrow and no Auer rods, absence of extramedullary disease, and partial recovery of peripheral blood counts (absolute neutrophil count >500/μL and platelets >50,000/μL).
CR, complete remission; CRh, complete remission with partial hematological recovery.
TIBSOVO provided durable responses1
Median duration of response (months)1,c | |
---|---|
DOCR | DOCR+CRh |
NE (95% CI, 4.2-NE) | NE (95% CI, 4.2-NE) |
cDOCR and DOCR+CRh were defined as time since first response of CR or CR/CRh, respectively, to relapse or death, whichever was earlier.1
Median DOCR and median DOCR+CRh were not estimable (NE), with 5 patients who achieved CR or CRh (42%) remaining on TIBSOVO treatment (treatment duration range, 20.3-40.9 months).1
- 58% of those who achieved CR or CRh (7/12) were in remission at 12 months after initiating treatment2
CR, complete remission; CRh, complete remission with partial hematological recovery; DOCR, duration of CR; DOCR+CRh, duration of CR or CRh.
TIBSOVO enabled strong and rapid responses1,2
Time to response in patients who achieved CR or CRh
- The latest CR was achieved at 4.6 months2
- For patients without disease progression or unacceptable toxicity, treat for a minimum of 6 months to allow time for clinical response1
CR, complete remission; CRh, complete remission with partial hematological recovery.
Transfusion independence was seen in 41% of transfusion-dependent patients who received TIBSOVO1,d
55% of patients who were transfusion independent at baseline (6/11) remained so1
dPatients were defined as transfusion dependent at baseline if they received any RBC or platelet transfusion occurring within 56 days prior to the first dose of TIBSOVO. Patients were defined as transfusion independent if they became independent of transfusions during any 56-day postbaseline period.1
RBC, red blood cell.
TIBSOVO improved hematologic parameters3
Mean bone marrow blasts decreased coincident with increased platelet, neutrophil, and hemoglobin values4,e
Decrease in bone marrow blasts
Increase in mean absolute neutrophil counts
Increase in mean platelet counts
Increase in mean hemoglobin level
eData are mean values with standard deviations.
fOne patient enrolled in the dose-escalation phase was positive for the IDH1-D54N mutation by local testing and was not positive for the IDH1-R132 mutation by the companion diagnostic test; this patient was therefore excluded from the efficacy analyses.
TIBSOVO delivered strong and durable responses as a once-daily oral treatment in the secondary AML setting2
41% of patients with sAML (9/22) achieved CR or CRh2
- 56% of patients with sAML who achieved CR or CRh (5/9) were in remission at 12 months after initiating treatment2
31% of patients with prior HMA therapy (4/13) achieved CR or CRh2
- 50% of patients with prior HMA therapy who achieved CR or CRh (2/4) were in remission at 12 months after initiating treatment2
AML, acute myeloid leukemia; CR, complete remission; CRh, complete remission with partial hematological recovery; HMA, hypomethylating agent; sAML, secondary AML.