Ponatinib Hydrochloride

ICLUSIG ® is indicated for the treatment of adult patients with: Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia (Ph+ ALL) Newly diagnosed Ph+ ALL in combination with chemotherapy. This indication is approved under accelerated approval based on minimal residual disease (MRD)-negative complete remission (CR) at the end of induction [see Clinical Studies (14) ] . Continued approval for this indication may be contingent upon verification of clinical benefit in a confirmatory trial(s). As monotherapy in Ph+ ALL for whom no other kinase inhibitors are indicated or T315I-positive Ph+ ALL. Chronic Myeloid Leukemia (CML) Chronic phase (CP) CML with resistance or intolerance to at least two prior kinase inhibitors. Accelerated phase (AP) or blast phase (BP) CML for whom no other kinase inhibitors are indicated. T315I-positive CML (chronic phase, accelerated phase, or blast phase). ICLUSIG is a kinase inhibitor indicated for the treatment of adult patients with: Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia (Ph+ ALL) Newly diagnosed Ph+ ALL, in combination with chemotherapy. This indication is approved under accelerated approval based on minimal residual disease (MRD)-negative complete remission (CR) at the end of induction. Continued approval for this indication may be contingent upon verification of clinical benefit in a confirmatory trial(s). ( 1 ) As monotherapy in Ph+ ALL for whom no other kinase inhibitors are indicated or T315I-positive Ph+ ALL. ( 1 ) Chronic Myeloid Leukemia (CML) Chronic phase (CP) CML with resistance or intolerance to at least two prior kinase inhibitors. ( 1 ) Accelerated phase (AP) or blast phase (BP) CML for whom no other kinase inhibitors are indicated. ( 1 ) T315I-positive CML (chronic phase, accelerated phase, or blast phase). ( 1 ) Limitations of Use : ICLUSIG is not indicated and is not recommended for the treatment of patients with newly diagnosed CP-CML. ( 5.7 ) Limitations of Use : ICLUSIG is not indicated and is not recommended for the treatment of patients with newly diagnosed CP-CML [see Warnings and Precautions (5.7) ] .

Tablets, film-coated: 10 mg of ponatinib: Oval, white to off-white, biconvex, debossed "NZ" on one side and plain on the other side 15 mg of ponatinib: Round, white, biconvex, debossed "A5" on one side and plain on the other side 30 mg of ponatinib: Round, white, biconvex, debossed "C7" on one side and plain on the other side 45 mg of ponatinib: Round, white, biconvex, debossed "AP4" on one side and plain on the other side Tablets : 10 mg, 15 mg, 30 mg, and 45 mg. ( 3 )

None. None. ( 4 )

Hypertension : Monitor blood pressure and manage hypertension as clinically indicated. Interrupt, dose reduce or stop ICLUSIG if hypertension is not medically controlled. ( 2.2 , 5.5 ) Pancreatitis : Monitor serum lipase. Interrupt, then resume at the same or reduced dose or discontinue ICLUSIG based on severity. Evaluate for pancreatitis when lipase elevation is accompanied by abdominal symptoms. ( 2.2 , 5.6 ) Neuropathy : Monitor for symptoms of peripheral and cranial neuropathy. Interrupt, then resume at the same or reduced dose or discontinue ICLUSIG based on recurrence/severity. ( 2.2 , 5.8 ) Ocular Toxicity : Conduct comprehensive eye exams at baseline and periodically during treatment. ( 5.9 ) Hemorrhage : Monitor for hemorrhage and manage patients as clinically indicated. Interrupt, then resume at the same or reduced dose or discontinue ICLUSIG based on recurrence/severity. ( 2.2 , 5.10 ) Fluid Retention : Monitor for fluid retention and manage patients as clinically indicated. Interrupt, then resume at the same or reduced dose or discontinue ICLUSIG based on recurrence/severity. ( 2.2 , 5.11 ) Cardiac Arrhythmias : Monitor for signs or symptoms of arrhythmias and manage patients as clinically indicated. Interrupt, then resume at the same or reduced dose or discontinue ICLUSIG based on recurrence/severity. ( 5.12 ) Myelosuppression : Obtain complete blood counts every 2 weeks for the first 3 months and then monthly or as clinically indicated. If ANC less than 1 × 10 9 /L or platelets less than 50 × 10 9 /L, interrupt ICLUSIG until ANC at least 1.5 × 10 9 /L and platelets at least 75 × 10 9 /L, then resume at same or reduced dose. ( 2.2 , 5.13 ) Tumor Lysis Syndrome : Ensure adequate hydration and correct elevated uric acid levels prior to initiating ICLUSIG. ( 5.14 ) Reversible Posterior Leukoencephalopathy Syndrome (RPLS) : Interrupt ICLUSIG until resolution. The safety of resumption of ICLUSIG in patients upon resolution of RPLS is unknown. ( 5.15 ) Impaired Wound Healing and Gastrointestinal Perforation : Withhold ICLUSIG for at least 1 week prior to elective surgery. Do not administer for at least 2 weeks following major surgery and until adequate wound healing. The safety of resumption of ICLUSIG after resolution of wound healing complications has not been established. ( 5.16 ) Embryo-Fetal Toxicity : Can cause fetal harm. Advise females of reproductive potential of the potential risk to a fetus and to use effective contraception. ( 5.17 , 8.1 , 8.3 )

5.1 Arterial Occlusive Events Arterial occlusive events (AOEs), including fatalities, occurred in patients who received ICLUSIG [see Adverse Reactions (6.1) ] . In PhALLCON, 6% of 163 patients experienced AOEs, of which 3.1%, 1.8%, and 1.2% experienced cardiovascular, cerebrovascular, and peripheral vascular AOEs, respectively. The median time to onset of the first AOE was 11.3 months (range: 8 days to 2.8 years). Grade 3 or 4 AOEs occurred in 3.7% of patients; the most frequent Grade 3 or 4 AOEs were myocardial infarction (1.2%), peripheral arterial occlusive disease (1.2%), angina pectoris and cerebrovascular accident (0.6% each). Fatal AOE of sudden death occurred in 1 patient (0.6%). AOEs were more frequent with increasing age [see Use in Specific Populations (8.5) ] . In PhALLCON, patients with uncontrolled hypertension, hypertriglyceridemia, or diabetes were excluded. Patients with clinically significant, uncontrolled, or active cardiovascular disease, including any history of myocardial infarction, peripheral vascular infarction, revascularization procedure, venous thromboembolism, clinically significant atrial/ventricular tachyarrhythmias, unstable angina, or congestive heart failure within the 6 months prior to the first dose of ICLUSIG, were also excluded. In OPTIC, of the 94 patients who received a starting dose of 45 mg (45 mg → 15 mg), 18% experienced AOEs, of which 11%, 4.3%, and 3.2% experienced cardiovascular, cerebrovascular or peripheral vascular AOEs, respectively. The median time to onset of the first cardiovascular, cerebrovascular, or peripheral vascular event was 9.4 months (range: 12 days to 5.7 years), 11.7 months (range: 15 days to 1.6 years), and 6.3 months (range: 23 days to 3.6 years), respectively. Grade 3 or 4 AOEs occurred in 7% of patients; the most frequent Grade 3 or 4 AOEs were myocardial infarction, acute coronary syndrome, arterial thrombosis, ischemic stroke, ischemic cerebral infarction, subclavian artery stenosis and unstable angina (1.1% each). Fatal AOEs occurred in 4 patients (4.3%); including sudden death (2.1%), myocardial ischemia (1.1%) and myocardial infarction (1.1%). AOEs were more frequent with increasing age [see Use in Specific Populations (8.5) ] . In OPTIC, patients with uncontrolled hypertension or diabetes and patients with clinically significant, uncontrolled, or active cardiovascular disease, including any history of myocardial infarction, peripheral vascular infarction, revascularization procedure, congestive heart failure, venous thromboembolism, or clinically significant atrial/ventricular arrhythmias, were excluded. In PACE, 26% of 449 patients experienced AOEs, of which 15%, 7%, and 11% experienced cardiovascular, cerebrovascular, and peripheral vascular AOEs, respectively. Some patients experienced recurrent or multisite vascular occlusion. The median time to onset of the first cardiovascular, cerebrovascular, and peripheral vascular AOEs was 1 year (range: 1 day to 4.1 years), 1.4 years (range: 2 days to 4.5 years), and 2 years (range: 10 days to 4.9 years), respectively. Grade 3 or 4 AOEs occurred in 14% of patients; the most frequent Grade 3 or 4 AOEs were peripheral arterial occlusive disease (3.1%), myocardial infarction (2%), coronary artery disease (1.6%), and cerebral infarction (1.6%). Fatal AOEs occurred in 9 patients (2%); the most frequent fatal AOE was cardiac arrest (0.9%). In PACE, fatal and life-threatening AOEs occurred within 2 weeks of starting treatment at 45 mg, and at dose levels as low as 15 mg per day. Patients with and without cardiovascular risk factors, including patients age 50 years or younger, experienced AOEs. AOEs were more frequent with increasing age [see Use in Specific Populations (8.5) ] and in patients with history of ischemia, hypertension, diabetes, or hypercholesterolemia. The most common risk factors in patients with AOEs were history of hypertension (67%; 77/115), hypercholesterolemia (59%; 68/115), and non-ischemic cardiac disease (43%; 49/115). In PACE, patients developed heart failure concurrent or subsequent to a myocardial ischemic event [see Warnings and Precautions (5.3) ] . Patients required revascularization procedures (coronary, cerebrovascular, and peripheral arterial). ICLUSIG caused stenosis over multiple segments in major arterial vessels that supply the brain (e.g., carotid, vertebral, middle cerebral artery). Patients developed digital or distal extremity necrosis and required amputations. Renal artery stenosis associated with worsening, labile or treatment-resistant hypertension occurred in some ICLUSIG-treated patients [see Warnings and Precautions (5.5) ] . In PACE, patients with uncontrolled hypertriglyceridemia and patients with clinically significant or active cardiovascular disease, including any history of clinically significant atrial/ventricular arrhythmias or history of myocardial infarction, unstable angina, or congestive heart failure within the 3 months prior to the first dose of ICLUSIG, were excluded [see Adverse Reactions (6.1) ] . Consider whether the benefits of ICLUSIG are expected to exceed the risks. Monitor for evidence of AOEs. Interrupt, then resume at the same or decreased dose or discontinue ICLUSIG based on recurrence/severity [see Dosage and Administration (2.2) ] . Consider benefit-risk to guide a decision to restart ICLUSIG.

5.2 Venous Thromboembolic Events Serious or severe VTEs have occurred in patients who received ICLUSIG. […]

The following clinically significant adverse reactions are described elsewhere in the labeling: Arterial Occlusive Events [see Warnings and Precautions (5.1) ] Venous Thromboembolic Events [see Warnings and Precautions (5.2) ] Heart Failure [see Warnings and Precautions (5.3) ] Hepatotoxicity [see Warnings and Precautions (5.4) ] Hypertension [see Warnings and Precautions (5.5) ] Pancreatitis [see Warnings and Precautions (5.6) ] Neuropathy [see Warnings and Precautions (5.8) ] Ocular Toxicity [see Warnings and Precautions (5.9) ] Hemorrhage [see Warnings and Precautions (5.10) ] Fluid Retention [see Warnings and Precautions (5.11) ] Cardiac Arrhythmias [see Warnings and Precautions (5.12) ] Myelosuppression [see Warnings and Precautions (5.13) ] Tumor Lysis Syndrome [see Warnings and Precautions (5.14) ] Reversible Posterior Leukoencephalopathy Syndrome [see Warnings and Precautions (5.15) ] Impaired Wound Healing and Gastrointestinal Perforation [see Warnings and Precautions (5.16) ] Most common adverse reactions (occurring in >20% of patients) are: ICLUSIG as a single agent: rash and related conditions, arthralgia, abdominal pain, fatigue, headache, constipation, hypertension, dry skin, hepatotoxicity, fluid retention and edema, pyrexia, pancreatitis/lipase elevation, nausea, hemorrhage, anemia, AOEs, and cardiac arrhythmias. The most common Grade 3 or 4 laboratory abnormalities (>20%) are platelet count decreased, neutrophil cell count decreased, and white blood cell decreased. ( 6.1 ) ICLUSIG in combination with chemotherapy: hepatotoxicity, arthralgia, rash and related conditions, headache, pyrexia, abdominal pain, constipation, fatigue, nausea, oral mucositis, hypertension, pancreatitis/lipase elevation, neuropathy peripheral, hemorrhage, febrile neutropenia, fluid retention and edema, vomiting, paresthesia, and cardiac arrhythmias. The most common Grade 3 or 4 laboratory abnormalities (>20%) are decreased white blood cell count, decreased neutrophil cell count, decreased platelet count, decreased lymphocyte cell count, decreased hemoglobin, increased lipase, and increased alanine aminotransferase. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Takeda Pharmaceuticals at 1-844-817-6468 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared with rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice. The most common adverse reactions identified in the Highlights of the Prescribing Information are based on two safety populations. The first is from a pooled safety population of 543 patients with CML or resistant or intolerant Ph+ ALL (OPTIC and PACE studies) who received ICLUSIG as a single agent at a starting dose of 45 mg orally once daily. In this pooled safety population, the most common (>20%) adverse reactions were rash and related conditions, arthralgia, abdominal pain, fatigue, headache, constipation, hypertension, dry skin, hepatotoxicity, fluid retention and edema, pyrexia, pancreatitis/lipase elevation, nausea, hemorrhage, anemia, AOEs and cardiac arrhythmias. The most common Grade 3 or 4 laboratory abnormalities (>20%) were platelet count decreased, neutrophil cell count decreased, and white blood cell decreased. The second safety population is from 163 patients with newly diagnosed Ph+ ALL (PhALLCON study) who received ICLUSIG in combination with chemotherapy at a starting dose of 30 mg orally once daily. The most common adverse reactions (>20%) included hepatotoxicity, arthralgia, rash and related conditions, headache, pyrexia, abdominal pain, constipation, fatigue, nausea, oral mucositis, hypertension, pancreatitis/lipase elevation, neuropathy peripheral, hemorrhage, febrile neutropenia, fluid retention and edema, vomiting, paresthesia, and cardiac arrhythmias. The most common Grade 3 or 4 laboratory abnormalities (>20%) included decreased white blood cell count, decreased neutrophil cell count, decreased platelet count, decreased lymphocyte cell count, decreased hemoglobin, increased lipase, and increased ALT. Newly Diagnosed Ph+ ALL The safety of ICLUSIG was evaluated in PhALLCON, a randomized, active-controlled, multicenter trial conducted in patients with newly diagnosed Ph+ ALL [see Clinical Studies (14) ] . Patients received ICLUSIG (n=163) or imatinib 600 mg (n=81) in combination with reduced-intensity chemotherapy followed by continued treatment with ICLUSIG or imatinib as a single agent (imatinib in combination with chemotherapy is not an approved regimen in adult patients). In the ICLUSIG arm, patients received a starting dosage of ICLUSIG 30 mg orally once daily in combination with chemotherapy, with a reduction to 15 mg orally once daily upon achievement of MRD-negative CR at the end of induction. The median duration of exposure was 9.0 months (range: <1 month to 4.2 years) in the ICLUSIG arm and 5.2 months (range: <1 month to 4.4 years) in the imatinib arm. Patients with uncontrolled hypertension, hypertriglyceridemia, or diabetes and patients with clinically significant, uncontrolled, or active cardiovascular disease, including any history of myocardial infarction, peripheral vascular infarction, revascularization procedure, venous thromboembolism, clinically significant atrial/ventricular tachyarrhythmias, history of myocardial infarction, unstable angina, or congestive heart failure within the 6 months prior to the first dose of ICLUSIG, were excluded. Serious adverse reactions occurred in 63% of patients receiving ICLUSIG in combination with chemotherapy. Serious adverse reactions in >2% of patients included febrile neutropenia (18%), pyrexia (6%), thrombocytopenia (4.3%), sepsis (3.7%), septic shock (3.7%), anemia (2.5%), hemorrhage (2.5%), neutropenia (2.5%), pancreatitis (2.5%), peripheral neuropathy (2.5%), pneumonia (2.5%) and acute kidney injury (2.5%). Fatal adverse reactions occurred in 6% of patients who received ICLUSIG in combination with chemotherapy, including sepsis (3.7%), sudden death, pneumonitis and respiratory failure (0.6%, each). Permanent discontinuation of ICLUSIG due to adverse reactions occurred in 13% of patients. Adverse reactions resulting in permanent discontinuation of ICLUSIG in >2% of patients included arterial occlusive events and sepsis. Dosage modifications (dose interruption or reduction) of ICLUSIG due to adverse reactions occurred in 71% of patients. Adverse reactions leading to dose interruption or reduction of ICLUSIG in >5% of patients included increased ALT, neutropenia, increased lipase, thrombocytopenia, increased AST, febrile neutropenia, and abdominal pain. Table 4 summarizes the adverse reactions in patients receiving ICLUSIG or imatinib in combination with chemotherapy in PhALLCON. Table 4: Adverse Reactions (>10%) in Patients with Newly Diagnosed Ph+ ALL in PhALLCON Adverse Reaction ICLUSIG 30 mg → 15 mg with Chemotherapy (n = 163) Imatinib 600 mg with Chemotherapy (n = 81) All Grades (%) Grade 3 or 4 (%) All Grades (%) Grade 3 or 4 (%) Graded using CTCAE v5.0 Hepatobiliary Disorders Hepatotoxicity 66 30 57 14 Musculoskeletal and Connective Tissue Disorders Arthralgia Includes arthralgia, arthritis, back pain, flank pain, intervertebral disc degeneration, joint swelling, osteoarthritis, neck pain, pain, pain in extremity, pain of skin, sciatica, spinal pain, tendonitis, and tenosynovitis. […]

Strong CYP3A Inhibitors : Avoid coadministration or reduce ICLUSIG dose if coadministration cannot be avoided. ( 2.3 , 7.1 ) Strong CYP3A Inducers : Avoid coadministration. ( 7.1 )

7.1 Effects of Other Drugs on ICLUSIG Strong CYP3A Inhibitors Coadministration of ICLUSIG with a strong CYP3A inhibitor increases ponatinib plasma concentrations [see Clinical Pharmacology (12.3) ] , which may increase the risk of ICLUSIG adverse reactions. Avoid coadministration of ICLUSIG with strong CYP3A inhibitors. If coadministration of ICLUSIG with strong CYP3A inhibitors cannot be avoided, reduce the ICLUSIG dosage [see Dosage and Administration (2.3) ] . Strong CYP3A Inducers Coadministration of ICLUSIG with a strong CYP3A inducer decreases ponatinib plasma concentrations [see Clinical Pharmacology (12.3) ] . Avoid coadministration of ICLUSIG with strong CYP3A inducers unless the benefit outweighs the risk of decreased ponatinib exposure. Monitor patients for reduced efficacy. Selection of concomitant medication with no or minimal CYP3A induction potential is recommended.

Lactation : Advise not to breastfeed. ( 8.2 )

8.1 Pregnancy Risk Summary Based on findings in animals and its mechanism of action [see Clinical Pharmacology (12.1) ] , ICLUSIG can cause fetal harm when administered to a pregnant woman. There are no available data on ICLUSIG use in pregnant women. In animal reproduction studies, oral administration of ponatinib to pregnant rats during organogenesis caused adverse developmental effects at doses lower than human exposures at the maximum recommended human dose of 45 mg/day (see Data ) . Advise pregnant women of the potential risk to a fetus. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Data Animal Data Ponatinib was studied for effects on embryo-fetal development in pregnant rats given oral doses of 0.3 mg/kg/day, 1 mg/kg/day, and 3 mg/kg/day during organogenesis (25 rats per group). At the maternally toxic dose of 3 mg/kg/day (equivalent to the AUC in patients receiving the maximum recommended dose of 45 mg/day), ponatinib caused embryo-fetal toxicity as shown by increased resorptions, reduced body weight, external alterations, multiple soft tissue and skeletal alterations, and reduced ossification. Embryo-fetal toxicities also were observed at 1 mg/kg/day (approximately 24% the AUC in patients receiving the maximum recommended dose of 45 mg/day) and involved multiple fetal soft tissue and skeletal alterations, including reduced ossification.

8.2 Lactation Risk Summary There are no data on the presence of ponatinib in human milk, the effects on the breastfed child, or on milk production. Because of the potential for serious adverse reactions in the breastfed child, advise women not to breastfeed during treatment with ICLUSIG and for 1 week after the last dose.

8.3 Females and Males of Reproductive Potential ICLUSIG can cause fetal harm when administered to pregnant women [see Use in Specific Populations (8.1) ] . Pregnancy Testing Verify the pregnancy status of females of reproductive potential prior to initiating ICLUSIG. Contraception Females Advise females of reproductive potential to use effective contraception during treatment with ICLUSIG and for 3 weeks after the last dose. Infertility Females Based on animal data, ponatinib may impair fertility in females of reproductive potential [see Nonclinical Toxicology (13.1) ] . It is not known whether these effects on fertility are reversible.

8.4 Pediatric Use Safety and effectiveness of ICLUSIG have not been established in pediatric patients. Juvenile Animal Toxicity Data A juvenile toxicity study in 15 day old rats was conducted with daily oral gavage administration of ponatinib at 0.75 mg/kg/day, 1.5 mg/kg/day, or 3 mg/kg/day for 21 days. There were no adverse effects of ponatinib on juvenile rat developmental parameters (vaginal opening, preputial separation or bone measurements) observed in this study. Once daily oral administration of 3 mg/kg/day ponatinib to juvenile rats beginning on Day 15 postpartum (pp) resulted in mortality related to inflammatory effects after 6 to 7 days following initiation of treatment. The dose of 3 mg/kg/day is approximately 0.32 times the maximum recommended human dose of 45 mg/day on a mg/m 2 basis for a child.

8.5 Geriatric Use Of the 163 patients with Ph+ALL who received ICLUSIG in PhALLCON, 21% were 65 years and older and 7% were 75 years and older. Overall, no differences in efficacy of ICLUSIG were observed between patients 65 years of age or older compared to younger patients. AOEs occurred in 21% (7/34) of patients 65 years and older and 2.3% (3/129) of patients less than 65 years of age. Of the 94 patients with CP-CML who received ICLUSIG at a starting dose of 45 mg in OPTIC, 17% were 65 years and older and 2.1% were 75 years and older. Patients aged 65 years and older had a lower ≤1% BCR::ABL1 IS rate at 12 months (27%) than patients less than 65 years of age (47%). By 60 months, patients aged 65 years and older had a ≤1% BCR::ABL1 IS rate of 40% and patients less than 65 years of age had a rate of 64%. AOEs occurred in 38% (6/16) of patients 65 years and older and 14% (11/78) of patients less than 65 years of age [see Warnings and Precautions (5.1) ] . Of the 449 patients who received ICLUSIG in PACE, 35% were 65 years and older and 8% were 75 years and older. In patients with CP-CML, patients aged 65 years and older had a lower major cytogenetic response rate (40%) as compared with patients less than 65 years of age (65%). In patients with AP-CML, BP-CML, and Ph+ ALL, patients aged 65 years and older had a similar hematologic response rate (45%) as compared with patients less than 65 years of age (44%). AOEs occurred in 35% (54/155) of patients 65 years and older and in 21% (61/294) of patients less than 65 years of age [see Warnings and Precautions (5.1) ] . Patients aged 65 years or older are more likely to experience adverse reactions including vascular occlusion, decreased platelet count, peripheral edema, increased lipase, dyspnea, asthenia, muscle spasms, and decreased appetite. In general, dose selection for an elderly patient should be cautious, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.

8.6 Hepatic Impairment Patients with hepatic impairment are more likely to experience adverse reactions compared to patients with normal hepatic function. For patients with CP-CML, AP-CML, BP-CML, and Ph+ ALL receiving monotherapy, reduce the starting dose of ICLUSIG for patients with pre-existing hepatic impairment (Child-Pugh A, B, or C). For patients with newly diagnosed Ph+ ALL, dosage adjustment is not recommended when administering ICLUSIG to patients with mild hepatic impairment (Child-Pugh A). Clinical data in patients with newly diagnosed Ph+ ALL with pre-existing moderate or severe hepatic impairment (Child-Pugh B or C) is not available and patients should be closely monitored for potential increased incidence of adverse reactions. Modify the ICLUSIG dosage in the event of adverse reactions [see Dosage and Administration (2.2 , 2.4) , Clinical Pharmacology (12.3) ] . The safety of multiple doses, or doses higher than 30 mg, has not been studied in patients with hepatic impairment.

Ponatinib is a kinase inhibitor. Ponatinib inhibited the in vitro tyrosine kinase activity of ABL and T315I mutant ABL with IC 50 concentrations of 0.4 nM and 2.0 nM, respectively. Ponatinib inhibited the in vitro activity of additional kinases with IC 50 concentrations between 0.1 nM and 20 nM, including members of the VEGFR, PDGFR, FGFR, EPH receptors and SRC families of kinases, and KIT, RET, TIE2, and FLT3. Ponatinib inhibited the in vitro viability of cells expressing native or mutant BCR::ABL, including T315I. In mice, treatment with ponatinib reduced the size of tumors expressing native or T315I mutant BCR::ABL when compared to controls.