IMBRUVICA- ibrutinib capsule 
Pharmacyclics, Inc

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HIGHLIGHTS OF PRESCRIBING INFORMATION

These highlights do not include all the information needed to use IMBRUVICA safely and effectively. See full prescribing information for IMBRUVICA.

IMBRUVICA® (ibrutinib) capsules, for oral use
Initial U.S. Approval: 2013

RECENT MAJOR CHANGES

Indications and Usage (1.2, 1.3)07/14
Dosage and Administration (2.2, 2.3) 01/14
Warnings and Precautions (5)07/14

INDICATIONS AND USAGE

IMBRUVICA is a kinase inhibitor indicated for the treatment of patients with:

  • Mantle cell lymphoma (MCL) who have received at least one prior therapy (1.1).
    Accelerated approval was granted for this indication based on overall response rate. Improvements in survival or disease-related symptoms have not been established. Continued approval for this indication may be contingent upon verification of clinical benefit in confirmatory trials.
  • Chronic lymphocytic leukemia (CLL) who have received at least one prior therapy (1.2).
  • Chronic lymphocytic leukemia with 17p deletion (1.3).

DOSAGE AND ADMINISTRATION

MCL: 560 mg taken orally once daily (four 140 mg capsules once daily) (2.2).

CLL: 420 mg taken orally once daily (three 140 mg capsules once daily) (2.2).

Capsules should be taken orally with a glass of water. Do not open, break, or chew the capsules (2.1).

DOSAGE FORMS AND STRENGTHS

Capsule: 140 mg (3)

CONTRAINDICATIONS

None (4)

WARNINGS AND PRECAUTIONS

  • Hemorrhage: Monitor for bleeding (5.1).
  • Infections: Monitor patients for fever and infections and evaluate promptly (5.2).
  • Cytopenias: Check complete blood counts monthly (5.3).
  • Atrial Fibrillation: Monitor patients for atrial fibrillation (5.4).
  • Second Primary Malignancies: Other malignancies have occurred in patients, including skin cancers, and other carcinomas (5.5).
  • Embryo-Fetal Toxicity: Can cause fetal harm. Advise women of the potential risk to a fetus and to avoid pregnancy while taking the drug (5.6).

ADVERSE REACTIONS

The most common adverse reactions (≥20%) in patients with MCL were thrombocytopenia, diarrhea, neutropenia, anemia, fatigue, musculoskeletal pain, peripheral edema, upper respiratory tract infection, nausea, bruising, dyspnea, constipation, rash, abdominal pain, vomiting and decreased appetite (6.1).

The most common adverse reactions (≥20%) in patients with CLL were thrombocytopenia, neutropenia, diarrhea, anemia, fatigue, musculoskeletal pain, upper respiratory tract infection, rash, nausea, and pyrexia (6.2).


To report SUSPECTED ADVERSE REACTIONS, contact Pharmacyclics at 1-877-877-3536 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch

DRUG INTERACTIONS

CYP3A Inhibitors: Avoid co-administration with strong and moderate CYP3A inhibitors. If a moderate CYP3A inhibitor must be used, reduce IMBRUVICA dose (2.4, 7.1).

CYP3A Inducers: Avoid co-administration with strong CYP3A inducers (7.2).

USE IN SPECIFIC POPULATIONS

Hepatic Impairment: Avoid use of IMBRUVICA in patients with baseline hepatic impairment (8.7).

See 17 for PATIENT COUNSELING INFORMATION and FDA-approved patient labeling.

Revised: 7/2014

FULL PRESCRIBING INFORMATION: CONTENTS*

1 INDICATIONS AND USAGE

1.1 Mantle Cell Lymphoma

1.2 Chronic Lymphocytic Leukemia

1.3 Chronic Lymphocytic Leukemia with 17p deletion

2 DOSAGE AND ADMINISTRATION

2.1 Dosing Guidelines

2.2 Dosage

2.3 Dose Modifications for Adverse Reactions

2.4 Dose Modifications for Use with CYP3A Inhibitors

2.5 Missed Dose

3 DOSAGE FORMS AND STRENGTHS

4 CONTRAINDICATIONS

5 WARNINGS AND PRECAUTIONS

5.1 Hemorrhage

5.2 Infections

5.3 Cytopenias

5.4 Atrial Fibrillation

5.5 Second Primary Malignancies

5.6 Embryo-Fetal Toxicity

6 ADVERSE REACTIONS

6.1 Mantle Cell Lymphoma

6.2 Chronic Lymphocytic Leukemia

7 DRUG INTERACTIONS

7.1 CYP3A Inhibitors

7.2 CYP3A Inducers

8 USE IN SPECIFIC POPULATIONS

8.1 Pregnancy

8.3 Nursing Mothers

8.4 Pediatric Use

8.5 Geriatric Use

8.6 Renal Impairment

8.7 Hepatic Impairment

8.8 Females and Males of Reproductive Potential

11 DESCRIPTION

12 CLINICAL PHARMACOLOGY

12.1 Mechanism of Action

12.2 Pharmacodynamics

12.3 Pharmacokinetics

13 NONCLINICAL TOXICOLOGY

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility

14 CLINICAL STUDIES

14.1 Mantle Cell Lymphoma

14.2 Chronic Lymphocytic Leukemia

16 HOW SUPPLIED/STORAGE AND HANDLING

17 PATIENT COUNSELING INFORMATION

*
Sections or subsections omitted from the full prescribing information are not listed.

FULL PRESCRIBING INFORMATION

1 INDICATIONS AND USAGE

1.1 Mantle Cell Lymphoma

IMBRUVICA is indicated for the treatment of patients with mantle cell lymphoma (MCL) who have received at least one prior therapy.

Accelerated approval was granted for this indication based on overall response rate. Improvements in survival or disease-related symptoms have not been established. Continued approval for this indication may be contingent upon verification of clinical benefit in confirmatory trials [see Clinical Studies (14.1)].

1.2 Chronic Lymphocytic Leukemia

IMBRUVICA is indicated for the treatment of patients with chronic lymphocytic leukemia (CLL) who have received at least one prior therapy [see Clinical Studies (14.2)].

1.3 Chronic Lymphocytic Leukemia with 17p deletion

IMBRUVICA is indicated for the treatment of patients with chronic lymphocytic leukemia (CLL) with 17p deletion [see Clinical Studies (14.2)].

2 DOSAGE AND ADMINISTRATION

2.1 Dosing Guidelines

Administer IMBRUVICA orally once daily at approximately the same time each day. Swallow the capsules whole with water. Do not open, break, or chew the capsules.

2.2 Dosage

Mantle Cell Lymphoma

The recommended dose of IMBRUVICA for MCL is 560 mg (four 140 mg capsules) orally once daily.

Chronic Lymphocytic Leukemia

The recommended dose of IMBRUVICA for CLL is 420 mg (three 140 mg capsules) orally once daily.

2.3 Dose Modifications for Adverse Reactions

Interrupt IMBRUVICA therapy for any Grade 3 or greater non-hematological, Grade 3 or greater neutropenia with infection or fever, or Grade 4 hematological toxicities. Once the symptoms of the toxicity have resolved to Grade 1 or baseline (recovery), IMBRUVICA therapy may be reinitiated at the starting dose. If the toxicity reoccurs, reduce dose by one capsule (140 mg per day). A second reduction of dose by 140 mg may be considered as needed. If these toxicities persist or recur following two dose reductions, discontinue IMBRUVICA.

Recommended dose modifications are described below:

Toxicity OccurrenceMCL Dose Modification After Recovery
Starting Dose = 560 mg
CLL Dose Modification After Recovery Starting Dose = 420 mg
FirstRestart at 560 mg dailyRestart at 420 mg daily
SecondRestart at 420 mg dailyRestart at 280 mg daily
ThirdRestart at 280 mg dailyRestart at 140 mg daily
FourthDiscontinue IMBRUVICADiscontinue IMBRUVICA

2.4 Dose Modifications for Use with CYP3A Inhibitors

Avoid co-administration with strong or moderate CYP3A inhibitors and consider alternative agents with less CYP3A inhibition.

Concomitant use of strong CYP3A inhibitors which would be taken chronically (e.g., ritonavir, indinavir, nelfinavir, saquinavir, boceprevir, telaprevir, nefazodone) is not recommended. For short-term use (treatment for 7 days or less) of strong CYP3A inhibitors (e.g., antifungals and antibiotics) consider interrupting IMBRUVICA therapy until the CYP3A inhibitor is no longer needed [see Drug Interactions (7.1)].

Reduce IMBRUVICA dose to 140 mg if a moderate CYP3A inhibitor must be used (e.g., fluconazole, darunavir, erythromycin, diltiazem, atazanavir, aprepitant, amprenavir, fosamprevir, crizotinib, imatinib, verapamil, grapefruit products and ciprofloxacin) [see Drug Interactions (7.1)].

Patients taking concomitant strong or moderate CYP3A inhibitors should be monitored more closely for signs of IMBRUVICA toxicity.

2.5 Missed Dose

If a dose of IMBRUVICA is not taken at the scheduled time, it can be taken as soon as possible on the same day with a return to the normal schedule the following day. Extra capsules of IMBRUVICA should not be taken to make up for the missed dose.

3 DOSAGE FORMS AND STRENGTHS

140 mg capsules

4 CONTRAINDICATIONS

None

5 WARNINGS AND PRECAUTIONS

5.1 Hemorrhage

Grade 3 or higher bleeding events (subdural hematoma, gastrointestinal bleeding, hematuria and post procedural hemorrhage) have occurred in up to 6% of patients. Bleeding events of any grade, including bruising and petechiae, occurred in approximately half of patients treated with IMBRUVICA.

The mechanism for the bleeding events is not well understood.

IMBRUVICA may increase the risk of hemorrhage in patients receiving antiplatelet or anticoagulant therapies.

Consider the benefit-risk of withholding IMBRUVICA for at least 3 to 7 days pre and post-surgery depending upon the type of surgery and the risk of bleeding [see Clinical Studies (14)].

5.2 Infections

Fatal and non-fatal infections have occurred with IMBRUVICA therapy. Twenty-five percent of patients with MCL and 26% of patients with CLL had infections Grade 3 or greater NCI Common Terminology Criteria for Adverse Events (CTCAE) [See Adverse Reactions (6.1) and (6.2)]. Monitor patients for fever and infections and evaluate promptly.

5.3 Cytopenias

Treatment-emergent Grade 3 or 4 cytopenias including neutropenia (range, 23 to 29%), thrombocytopenia (range, 5 to 17%), and anemia (range, 0 to 9%) occurred in patients treated with IMBRUVICA.

Monitor complete blood counts monthly.

5.4 Atrial Fibrillation

Atrial fibrillation and atrial flutter (range, 6 to 9%) have occurred in patients treated with IMBRUVICA, particularly in patients with cardiac risk factors, acute infections, and a previous history of atrial fibrillation. Periodically monitor patients clinically for atrial fibrillation. Patients who develop arrhythmic symptoms (e.g., palpitations, lightheadedness) or new onset dyspnea should have an ECG performed. If atrial fibrillation persists, consider the risks and benefits of IMBRUVICA treatment and dose modification [see Dosage and Administration (2.3)].

5.5 Second Primary Malignancies

Other malignancies (range, 5 to 10%) including carcinomas (range, 1 to 3%) have occurred in patients treated with IMBRUVICA. The most frequent second primary malignancy was non-melanoma skin cancer (range, 4 to 8%).

5.6 Embryo-Fetal Toxicity

Based on findings in animals, IMBRUVICA can cause fetal harm when administered to a pregnant woman. Ibrutinib caused malformations in rats at exposures 14 times those reported in patients with MCL and 20 times those reported in patients with CLL, receiving the ibrutinib dose of 560 mg per day and 420 mg per day, respectively. Reduced fetal weights were observed at lower exposures. Advise women to avoid becoming pregnant while taking IMBRUVICA. If this drug is used during pregnancy or if the patient becomes pregnant while taking this drug, the patient should be apprised of the potential hazard to a fetus [see Use in Specific Populations (8.1)].

6 ADVERSE REACTIONS

The following adverse reactions are discussed in more detail in other sections of the labeling:

Because clinical trials are conducted under widely variable conditions, adverse event rates observed in clinical trials of a drug cannot be directly compared with rates of clinical trials of another drug and may not reflect the rates observed in practice.

6.1 Mantle Cell Lymphoma

The data described below reflect exposure to IMBRUVICA in a clinical trial that included 111 patients with previously treated MCL treated with 560 mg daily with a median treatment duration of 8.3 months.

The most commonly occurring adverse reactions (≥ 20%) were thrombocytopenia, diarrhea, neutropenia, anemia, fatigue, musculoskeletal pain, peripheral edema, upper respiratory tract infection, nausea, bruising, dyspnea, constipation, rash, abdominal pain, vomiting and decreased appetite (See Tables 1 and 2).

The most common Grade 3 or 4 non-hematological adverse reactions (≥ 5%) were pneumonia, abdominal pain, atrial fibrillation, diarrhea, fatigue, and skin infections.

Fatal and serious cases of renal failure have occurred with IMBRUVICA therapy. Increases in creatinine 1.5 to 3 times the upper limit of normal occurred in 9% of patients.

Adverse reactions from the MCL trial (N=111) using single agent IMBRUVICA 560 mg daily occurring at a rate of ≥ 10% are presented in Table 1.

Table 1: Non-Hematologic Adverse Reactions in ≥ 10% of Patients with MCL (N=111)
System Organ ClassPreferred TermAll Grades (%)Grade 3 or 4 (%)
Gastrointestinal disordersDiarrhea515
Nausea310
Constipation250
Abdominal pain245
Vomiting230
Stomatitis171
Dyspepsia110
Infections and infestationsUpper respiratory tract infection340
Urinary tract infection143
Pneumonia147
Skin infections145
Sinusitis131
General disorders and administrative site conditionsFatigue415
Peripheral edema353
Pyrexia181
Asthenia143
Skin and subcutaneous tissue disordersBruising300
Rash253
Petechiae110
Musculoskeletal and connective tissue disordersMusculoskeletal pain371
Muscle spasms140
Arthralgia110
Respiratory, thoracic and mediastinal disordersDyspnea274
Cough190
Epistaxis110
Metabolism and nutrition disordersDecreased appetite212
Dehydration124
Nervous system disordersDizziness140
Headache130
Table 2: Treatment-Emergent* Decrease of Hemoglobin, Platelets, or Neutrophils in Patients with MCL (N=111)
Percent of Patients (N=111)
All Grades (%)Grade 3 or 4 (%)
*
Based on laboratory measurements and adverse reactions
Platelets Decreased5717
Neutrophils Decreased4729
Hemoglobin Decreased419

Ten patients (9%) discontinued treatment due to adverse reactions in the trial (N=111). The most frequent adverse reaction leading to treatment discontinuation was subdural hematoma (1.8%). Adverse reactions leading to dose reduction occurred in 14% of patients.

Patients with MCL who develop lymphocytosis greater than 400,000/mcL have developed intracranial hemorrhage, lethargy, gait instability, and headache. However, some of these cases were in the setting of disease progression.

Forty percent of patients had elevated uric acid levels on study including 13% with values above 10 mg/dL. Adverse reaction of hyperuricemia was reported for 15% of patients.

6.2 Chronic Lymphocytic Leukemia

The data described below reflect exposure to IMBRUVICA in an open label clinical trial (Study 1) that included 48 patients with previously treated CLL and a randomized clinical trial (Study 2) that included 391 randomized patients with previously treated CLL or SLL.

The most commonly occurring adverse reactions in Study 1 and Study 2 (≥ 20%) were thrombocytopenia, neutropenia, diarrhea, anemia, fatigue, musculoskeletal pain, upper respiratory tract infection, rash, nausea, and pyrexia.

Approximately five percent of patients receiving IMBRUVICA in Study 1 and 2 discontinued treatment due to adverse events. These included infections, subdural hematomas and diarrhea. Adverse events leading to dose reduction occurred in approximately 6% of patients.

Study 1

Adverse reactions and laboratory abnormalities from the CLL trial (N=48) using single agent IMBRUVICA 420 mg daily occurring at a rate of ≥ 10% are presented in Tables 3 and 4.

Table 3: Non-Hematologic Adverse Reactions in ≥ 10% of Patients with CLL (N=48) in Study 1
System Organ ClassPreferred TermAll Grades (%)Grade 3 or 4 (%)
*
One patient death due to histiocytic sarcoma.
Gastrointestinal disordersDiarrhea634
Constipation232
Nausea212
Stomatitis210
Vomiting192
Abdominal pain150
Dyspepsia130
Infections and infestationsUpper respiratory tract infection482
Sinusitis216
Skin infection176
Pneumonia108
Urinary tract infection100
General disorders and administrative site conditionsFatigue314
Pyrexia252
Peripheral edema230
Asthenia134
Chills130
Skin and subcutaneous tissue disordersBruising542
Rash270
Petechiae170
Respiratory, thoracic and mediastinal disordersCough190
Oropharyngeal pain150
Dyspnea100
Musculoskeletal and connective tissue disordersMusculoskeletal pain276
Arthralgia230
Muscle spasms192
Nervous system disordersDizziness210
Headache192
Peripheral neuropathy100
Metabolism and nutrition disordersDecreased appetite172
Neoplasms benign, malignant, unspecifiedSecond malignancies*10*0
Injury, poisoning and procedural complicationsLaceration102
Psychiatric disordersAnxiety100
Insomnia100
Vascular disordersHypertension178
Table 4: Treatment-Emergent* Decrease of Hemoglobin, Platelets, or Neutrophils in Patients with CLL (N=48) in Study 1
Percent of Patients (N=48)
All Grades (%)Grade 3 or 4 (%)
*
Based on laboratory measurements per IWCLL criteria and adverse reactions
Platelets Decreased7110
Neutrophils Decreased5427
Hemoglobin Decreased440

Study 2

Adverse reactions and laboratory abnormalities described below in Tables 5 and 6 reflect exposure to IMBRUVICA with a median duration of 8.6 months and exposure to ofatumumab with a median of 5.3 months in Study 2.

Table 5: Non-Hematologic Adverse Reactions ≥ 10% Reported in Study 2
IMBRUVICA
(N=195)
Ofatumumab
(N=191)
System Organ Class ADR TermAll Grades
(%)
Grade 3 or 4
(%)
All Grades
(%)
Grade 3 or 4
(%)
Subjects with multiple events for a given ADR term are counted once only for each ADR term.
The system organ class and individual ADR terms are sorted in descending frequency order in the IMBRUVICA arm.
*
Includes multiple ADR terms
Gastrointestinal disorders
  Diarrhea484182
  Nausea262180
  Stomatitis*17161
  Constipation15090
  Vomiting14061
General disorders and administration site conditions
  Fatigue282302
  Pyrexia242151
Infections and infestations
  Upper respiratory tract infection161112
  Pneumonia*1510139
  Sinusitis*11160
  Urinary tract infection10451
Skin and subcutaneous tissue disorders
  Rash*243130
  Petechiae14010
  Bruising*12010
Musculoskeletal and connective tissue disorders
  Musculoskeletal Pain*282181
  Arthralgia17170
Nervous system disorders
  Headache14160
  Dizziness11050
Injury, poisoning and procedural complications
  Contusion11030
Eye disorders
  Vision blurred10030
Table 6: Treatment-Emergent* Decrease of Hemoglobin, Platelets, or Neutrophils in Study 2
IMBRUVICA
(N=195)
Ofatumumab
(N=191)
All Grades
(%)
Grade 3 or 4
(%)
All Grades
(%)
Grade 3 or 4
(%)
*
Based on laboratory measurements per IWCLL criteria
Neutrophils Decreased51235726
Platelets Decreased5254510
Hemoglobin Decreased360210

7 DRUG INTERACTIONS

Ibrutinib is primarily metabolized by cytochrome P450 enzyme 3A.

7.1 CYP3A Inhibitors

In healthy volunteers, co-administration of ketoconazole, a strong CYP3A inhibitor, increased Cmax and AUC of ibrutinib by 29- and 24-fold, respectively. The highest ibrutinib dose evaluated in clinical trials was 12.5 mg/kg (actual doses of 840 – 1400 mg) given for 28 days with single dose AUC values of 1445 ± 869 ng ∙ hr/mL which is approximately 50% greater than steady state exposures seen at the highest indicated dose (560 mg).

Avoid concomitant administration of IMBRUVICA with strong or moderate inhibitors of CYP3A. For strong CYP3A inhibitors used short-term (e.g., antifungals and antibiotics for 7 days or less, e.g., ketoconazole, itraconazole, voriconazole, posaconazole, clarithromycin, telithromycin) consider interrupting IMBRUVICA therapy during the duration of inhibitor use. Avoid strong CYP3A inhibitors that are needed chronically. If a moderate CYP3A inhibitor must be used, reduce the IMBRUVICA dose. Patients taking concomitant strong or moderate CYP3A4 inhibitors should be monitored more closely for signs of IMBRUVICA toxicity [see Dosage and Administration (2.4)].

Avoid grapefruit and Seville oranges during IMBRUVICA treatment, as these contain moderate inhibitors of CYP3A [see Dosage and Administration (2.4), and Clinical Pharmacology (12.3)].

7.2 CYP3A Inducers

Administration of IMBRUVICA with rifampin, a strong CYP3A inducer, decreased ibrutinib Cmax and AUC by approximately 13- and 10-fold, respectively.

Avoid concomitant use of strong CYP3A inducers (e.g., carbamazepine, rifampin, phenytoin and St. John's Wort). Consider alternative agents with less CYP3A induction [see Clinical Pharmacology (12.3)].

8 USE IN SPECIFIC POPULATIONS

8.1 Pregnancy

Pregnancy Category D [see Warnings and Precautions (5.6)].

Risk Summary

Based on findings in animals, IMBRUVICA can cause fetal harm when administered to a pregnant woman. If IMBRUVICA is used during pregnancy or if the patient becomes pregnant while taking IMBRUVICA, the patient should be apprised of the potential hazard to the fetus.

Animal Data

Ibrutinib was administered orally to pregnant rats during the period of organogenesis at oral doses of 10, 40 and 80 mg/kg/day. Ibrutinib at a dose of 80 mg/kg/day was associated with visceral malformations (heart and major vessels) and increased post-implantation loss. The dose of 80 mg/kg/day in animals is approximately 14 times the exposure (AUC) in patients with MCL and 20 times the exposure in patients with CLL administered the dose of 560 mg daily and 420 mg daily, respectively. Ibrutinib at doses of 40 mg/kg/day or greater was associated with decreased fetal weights. The dose of 40 mg/kg/day in animals is approximately 6 times the exposure (AUC) in patients with MCL administered the dose of 560 mg daily.

8.3 Nursing Mothers

It is not known whether ibrutinib is excreted in human milk. Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from IMBRUVICA, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.

8.4 Pediatric Use

The safety and effectiveness of IMBRUVICA in pediatric patients has not been established.

8.5 Geriatric Use

Of the 111 patients treated for MCL, 63% were 65 years of age or older. No overall differences in effectiveness were observed between these patients and younger patients. Cardiac adverse events (atrial fibrillation and hypertension), infections (pneumonia and cellulitis) and gastrointestinal events (diarrhea and dehydration) occurred more frequently among elderly patients.

Of the 391 patients randomized in Study 2, 61% were ≥ 65 years of age. No overall differences in effectiveness were observed between age groups. Grade 3 or higher adverse events occurred more frequently among elderly patients treated with IMBRUVICA (61% of patients age ≥ 65 versus 51% of younger patients) [see Clinical Studies (14.2)].

8.6 Renal Impairment

Less than 1% of ibrutinib is excreted renally. Ibrutinib exposure is not altered in patients with Creatinine clearance (CLcr) > 25 mL/min. There are no data in patients with severe renal impairment (CLcr < 25 mL/min) or patients on dialysis [see Clinical Pharmacology (12.3)].

8.7 Hepatic Impairment

Ibrutinib is metabolized in the liver and significant increases in exposure of ibrutinib are expected in patients with hepatic impairment. Patients with serum aspartate transaminase (AST/SGOT) or alanine transaminase (ALT/SGPT) ≥ 3.0 × upper limit of normal (ULN) were excluded from IMBRUVICA clinical trials. There is insufficient data to recommend a dose of IMBRUVICA in patients with baseline hepatic impairment [see Clinical Pharmacology (12.3)].

8.8 Females and Males of Reproductive Potential

Advise women to avoid becoming pregnant while taking IMBRUVICA because IMBRUVICA can cause fetal harm [see Use in Specific Populations (8.1)].

11 DESCRIPTION

Ibrutinib is an inhibitor of Bruton's tyrosine kinase (BTK). It is a white to off-white solid with the empirical formula C25H24N6O2 and a molecular weight 440.50. Ibrutinib is freely soluble in dimethyl sulfoxide, soluble in methanol and practically insoluble in water.

The chemical name for ibrutinib is 1-[(3R)-3-[4-amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]-1-piperidinyl]-2-propen-1-one and has the following structure:

Chemical Structure

IMBRUVICA (ibrutinib) capsules for oral administration are supplied as white opaque capsules that contain 140 mg ibrutinib as the active ingredient. Each capsule also contains the following inactive ingredients: croscarmellose sodium, magnesium stearate, microcrystalline cellulose, sodium lauryl sulfate. The capsule shell contains gelatin, titanium dioxide and black ink. Each white opaque capsule is marked with "ibr 140 mg" in black ink.

12 CLINICAL PHARMACOLOGY

12.1 Mechanism of Action

Ibrutinib is a small-molecule inhibitor of BTK. Ibrutinib forms a covalent bond with a cysteine residue in the BTK active site, leading to inhibition of BTK enzymatic activity. BTK is a signaling molecule of the B-cell antigen receptor (BCR) and cytokine receptor pathways. BTK's role in signaling through the B-cell surface receptors results in activation of pathways necessary for B-cell trafficking, chemotaxis, and adhesion. Nonclinical studies show that ibrutinib inhibits malignant B-cell proliferation and survival in vivo as well as cell migration and substrate adhesion in vitro.

12.2 Pharmacodynamics

In patients with recurrent B-cell lymphoma > 90% occupancy of the BTK active site in peripheral blood mononuclear cells was observed up to 24 hours after ibrutinib doses of ≥ 2.5 mg/kg/day (≥ 175 mg/day for average weight of 70 kg).

12.3 Pharmacokinetics

Absorption

Ibrutinib is absorbed after oral administration with a median Tmax of 1 to 2 hours. Ibrutinib exposure increases with doses up to 840 mg. The steady-state AUC (mean ± standard deviation) observed in patients at 560 mg is 953 ± 705 ng∙h/mL and in patients at 420 mg is 680 ± 517 ng∙h/mL. Administration with food increased ibrutinib Cmax and AUC by approximately 2 to 4- and 2-fold, respectively, compared with administration of ibrutinib after overnight fasting.

Distribution

Reversible binding of ibrutinib to human plasma protein in vitro was 97.3% with no concentration dependence in the range of 50 to 1000 ng/mL. The apparent volume of distribution at steady state (Vd,ss/F) is approximately 10000 L.

Metabolism

Metabolism is the main route of elimination for ibrutinib. It is metabolized to several metabolites primarily by cytochrome P450, CYP3A, and to a minor extent by CYP2D6. The active metabolite, PCI-45227, is a dihydrodiol metabolite with inhibitory activity towards BTK approximately 15 times lower than that of ibrutinib. The range of the mean metabolite to parent ratio for PCI-45227 at steady-state is 1 to 2.8.

Elimination

Apparent clearance (CL/F) is approximately 1000 L/h. The half-life of ibrutinib is 4 to 6 hours.

Ibrutinib, mainly in the form of metabolites, is eliminated primarily via feces. After a single oral administration of radiolabeled [14C]-ibrutinib in healthy subjects, approximately 90% of radioactivity was excreted within 168 hours, with the majority (80%) excreted in the feces and less than 10% accounted for in urine. Unchanged ibrutinib accounted for approximately 1% of the radiolabeled excretion product in feces and none in urine, with the remainder of the dose being metabolites.

Age

Age (37 to 84 years) does not alter ibrutinib systemic clearance.

Gender

Gender does not alter ibrutinib systemic clearance.

Renal Impairment

Ibrutinib is not significantly cleared renally; urinary excretion of metabolites is < 10% of the dose. Creatinine clearance > 25 mL/min had no influence on the exposure to IMBRUVICA. There are no data in patients with severe renal impairment (CLcr < 25 mL/min) or in patients on dialysis.

Hepatic Impairment

Ibrutinib is metabolized in the liver. No clinical trials have been completed in subjects with impaired hepatic function. Preliminary PK data from an ongoing trial in subjects with hepatic impairment indicate that ibrutinib exposure is approximately 6-fold higher in subjects (N=3) with moderate hepatic impairment (Child-Pugh B) compared with mean exposures observed in healthy volunteer trials.

Drug Interactions

Coadministration of Ibrutinib with CYP3A Inhibitors

In a sequential design trial of 18 healthy volunteers, a single dose of 120 mg of IMBRUVICA was administered alone on Day 1 and a single dose of 40 mg of IMBRUVICA was administered on Day 7 in combination with 400 mg of ketoconazole (given daily on Days 4 – 9). Ketoconazole increased ibrutinib dose-normalized Cmax and AUC 29-fold and 24-fold, respectively. Simulations using physiologically-based pharmacokinetic (PBPK) models suggested that moderate CYP3A inhibitors (diltiazem and erythromycin) may increase the AUC of ibrutinib 6 to 9-fold in fasted condition.

Coadministration of Ibrutinib with CYP3A Inducers

PK data from a dedicated drug interaction trial showed that rifampin (a strong CYP3A inducer) decreases ibrutinib Cmax and AUC by more than 13- and 10-fold. Simulations using PBPK suggested that a moderate CYP3A inducer (efavirenz) may decrease the AUC of ibrutinib by up to 3-fold.

Coadministration of Ibrutinib with CYP Substrates

In vitro studies indicated that ibrutinib (I/Ki < 0.07 using mean Cmax at 560 mg) and PCI-45227 (I/Ki < 0.03) are unlikely to be inhibitors of any major CYPs at clinical doses. Both ibrutinib and the PCI-45227 are weak inducers of CYP450 isoenzymes in vitro.

Coadministration of Ibrutinib with Substrates of Transporters

In vitro studies indicated that ibrutinib is not a substrate of p-glycoprotein (P-gp). Systemic ibrutinib is unlikely to be an inhibitor of P-gp at clinical doses ([I]1/Ki < 0.1). However, it may have an effect on P-gp substrates in the GI tract due to higher local concentrations after an oral dose. Co-administration of oral narrow therapeutic index P-gp substrates (e.g., digoxin) with IMBRUVICA may increase their blood concentration.

13 NONCLINICAL TOXICOLOGY

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility

Carcinogenicity studies have not been conducted with ibrutinib.

Ibrutinib was not mutagenic in a bacterial mutagenicity (Ames) assay, was not clastogenic in a chromosome aberration assay in mammalian (CHO) cells, nor was it clastogenic in an in vivo bone marrow micronucleus assay in mice at doses up to 2000 mg/kg.

Fertility studies with ibrutinib have not been conducted in animals. In the general toxicology studies conducted in rats and dogs, orally administered ibrutinib did not result in adverse effects on reproductive organs.

14 CLINICAL STUDIES

14.1 Mantle Cell Lymphoma

The safety and efficacy of IMBRUVICA in patients with MCL who have received at least one prior therapy were evaluated in an open-label, multi-center, single-arm trial of 111 previously treated patients. The median age was 68 years (range, 40 to 84 years), 77% were male, and 92% were Caucasian. At baseline, 89% of patients had a baseline ECOG performance status of 0 or 1. The median time since diagnosis was 42 months, and median number of prior treatments was 3 (range, 1 to 5 treatments), including 11% with prior stem cell transplant. At baseline, 39% of subjects had at least one tumor ≥ 5 cm, 49% had bone marrow involvement, and 54% had extranodal involvement at screening.

IMBRUVICA was administered orally at 560 mg once daily until disease progression or unacceptable toxicity. Tumor response was assessed according to the revised International Working Group (IWG) for non-Hodgkin's lymphoma (NHL) criteria. The primary endpoint in this study was investigator-assessed overall response rate (ORR). Responses to IMBRUVICA are shown in Table 7.

Table 7: Overall Response Rate (ORR) and Duration of Response (DOR) Based on Investigator Assessment in Patients with MCL
Total (N=111)
CI = confidence interval; CR = complete response; PR = partial response; NR = not reached
ORR (%)65.8
  95% CI (%)(56.2, 74.5)
  CR (%)17.1
  PR (%)48.6
Median DOR months (95% CI)17.5 (15.8, NR)

An Independent Review Committee (IRC) performed independent reading and interpretation of imaging scans. The IRC review demonstrated an ORR of 69%.

The median time to response was 1.9 months.

Lymphocytosis

Upon initiation of IMBRUVICA, a temporary increase in lymphocyte counts (i.e., ≥ 50% increase from baseline and above absolute lymphocyte count of 5,000/mcL) occurred in 33% of patients in the MCL study. The onset of isolated lymphocytosis occurs during the first few weeks of IMBRUVICA therapy and resolves by a median of 8 weeks.

14.2 Chronic Lymphocytic Leukemia

The safety and efficacy of IMBRUVICA in patients with CLL who have received at least one prior therapy were demonstrated in one uncontrolled trial and one randomized, controlled trial.

Study 1

An open-label, multi-center trial was conducted in 48 previously treated CLL patients. The median age was 67 years (range, 37 to 82 years), 71% were male, and 94% were Caucasian. All patients had a baseline ECOG performance status of 0 or 1. The median time since diagnosis was 80 months and the median number of prior treatments was 4 (range, 1 to 12 treatments). At baseline, 46% of subjects had at least one tumor ≥ 5 cm.

IMBRUVICA was administered orally at 420 mg once daily until disease progression or unacceptable toxicity. The ORR and DOR were assessed using a modified version of the International Workshop on CLL Criteria by an Independent Review Committee. The ORR was 58.3% (95% CI: 43.2%, 72.4%), all partial responses. None of the patients achieved a complete response. The DOR ranged from 5.6 to 24.2+ months. The median DOR was not reached.

Study 2

A randomized, multicenter, open-label Phase 3 study of IMBRUVICA versus ofatumumab was conducted in patients with previously treated CLL or SLL. Patients (n=391) were randomized 1:1 to receive either IMBRUVICA 420 mg daily until disease progression, or unacceptable toxicity or ofatumumab at an initial dose of 300 mg, followed one week later by a dose of 2000 mg weekly for 7 doses and then every 4 weeks for 4 additional doses. Fifty seven patients randomized to ofatumumab crossed over following progression to receive IMBRUVICA. The median age was 67 years (range, 30 to 88 years), 68% were male, and 90% were Caucasian. All patients had a baseline ECOG performance status of 0 or 1. The trial enrolled 373 patients with CLL and 18 patients with SLL. The median time since diagnosis was 91 months and the median number of prior treatments was 2 (range, 1 to 13 treatments). At baseline, 58% of patients had at least one tumor ≥ 5 cm. Thirty-two percent of patients had 17p deletion.

Progression free survival (PFS) as assessed by independent review committee (IRC) according to IWCLL criteria indicated a 78% statistically significant reduction in the risk of death or progression. Analysis of overall survival (OS) demonstrated a 57% statistically significant reduction in the risk of death for patients in the IMBRUVICA arm. Efficacy results for Study 2 are shown in Table 8 and the Kaplan-Meier curves for PFS and OS are shown in Figures 1 and 2, respectively.

Table 8: Efficacy Results in Study 2
EndpointIMBRUVICA
N=195
Ofatumumab
N=196
HR = hazard ratio
*
Median OS not reached for either arm
IRC evaluated. All partial responses achieved; none of the patients achieved a complete response.
Median Progression Free SurvivalNot reached8.1 months
HR=0.22 [95% CI: 0.15; 0.32]
Overall Survival*HR=0.43 [95% CI: 0.24; 0.79]
Overall Response Rate42.6%4.1%
Figure 1: Kaplan-Meier Curve of Progression-Free Survival (ITT Population) in Study 2

Figure 1

Figure 2: Kaplan-Meier Curve of Overall Survival (ITT Population) in Study 2

Figure 2

CLL with 17p deletion (del 17p CLL)

Study 2 included 127 patients with del 17p CLL. The median age was 67 years (range, 30 to 84 years), 62% were male, and 88% were Caucasian. All patients had a baseline ECOG performance status of 0 or 1. PFS and ORR were assessed by IRC. Efficacy results for del 17p CLL are shown in Table 9.

Table 9: Efficacy Results in Patients with del 17p CLL
EndpointIMBRUVICA
N=63
Ofatumumab
N=64
HR = hazard ratio
*
IRC evaluated. All partial responses achieved; none of the patients achieved a complete response.
Median Progression Free SurvivalNot reached5.8 months
HR=0.25 [95% CI: 0.14; 0.45]
Overall Response Rate*47.6%4.7%

Lymphocytosis

Upon initiation of IMBRUVICA, an increase in lymphocyte counts (i.e., ≥ 50% increase from baseline and above absolute lymphocyte count of 5,000/mcL) occurred in 77% of patients in the CLL study. The onset of isolated lymphocytosis occurs during the first month of IMBRUVICA therapy and resolves by a median of 23 weeks (range 1 – 104+ weeks).

16 HOW SUPPLIED/STORAGE AND HANDLING

The white opaque 140 mg capsules marked with "ibr 140 mg" in black ink are available in white HDPE bottles with a child-resistant closure:

Store bottles at room temperature 20°C to 25°C (68°F to 77°F). Excursions are permitted between 15°C and 30°C (59°F to 86°F). Retain in original package.

17 PATIENT COUNSELING INFORMATION

See FDA-approved patient labeling (Patient Information)

Active ingredient made in China.

Distributed and Marketed by:
Pharmacyclics, Inc.
Sunnyvale, CA USA 94085
and
Marketed by:
Janssen Biotech, Inc.
Horsham, PA USA 19044

Patent http://www.imbruvica.com
IMBRUVICA® is a registered trademark owned by Pharmacyclics, Inc.

© Pharmacyclics, Inc. 2014
© Janssen Biotech, Inc. 2014

This Patient Information has been approved by the U.S. Food and Drug Administration.
Revised: 07/2014
© Pharmacyclics, Inc. 2014
© Janssen Biotech, Inc. 2014
Patient Information
IMBRUVICA (im-BRU-vih-kuh)

(ibrutinib) capsules
What is IMBRUVICA?
IMBRUVICA is a prescription medicine used to treat people with:
  • Mantle cell lymphoma (MCL) who have received at least one prior treatment
  • Chronic lymphocytic leukemia (CLL) who have received at least one prior treatment
  • Chronic lymphocytic leukemia (CLL) with 17p deletion
It is not known if IMBRUVICA is safe and effective in children.
What should I tell my healthcare provider before taking IMBRUVICA?
Before you take IMBRUVICA, tell your healthcare provider about all of your medical conditions, including if you:
  • have had recent surgery or plan to have surgery. Your healthcare provider may stop IMBRUVICA for any planned medical, surgical, or dental procedure.
  • have bleeding problems
  • have or had heart rhythm problems, smoke, or have a medical condition that increases your risk of heart disease, such as high blood pressure, high cholesterol, or diabetes
  • have an infection
  • have liver problems
  • are pregnant or plan to become pregnant. IMBRUVICA can harm your unborn baby. You should not become pregnant while taking IMBRUVICA.
  • are breastfeeding or plan to breastfeed. You and your healthcare provider should decide if you will take IMBRUVICA or breastfeed. You should not do both.
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. Taking IMBRUVICA with certain other medicines may affect how IMBRUVICA works and can cause side effects.
How should I take IMBRUVICA?
  • Take IMBRUVICA exactly as your healthcare provider tells you to take it.
  • Take IMBRUVICA 1 time a day.
  • Swallow IMBRUVICA capsules whole with a glass of water. Do not open, break, or chew IMBRUVICA capsules.
  • Take IMBRUVICA at about the same time each day.
  • If you miss a dose of IMBRUVICA take it as soon as you remember on the same day. Take your next dose of IMBRUVICA at your regular time on the next day. Do not take 2 doses of IMBRUVICA on the same day to make up for a missed dose.
What should I avoid while taking IMBRUVICA?
  • You should not drink grapefruit juice, eat grapefruit, or eat Seville oranges (often used in marmalades) while you are taking IMBRUVICA. These products may increase the amount of IMBRUVICA in your blood.
What are the possible side effects of IMBRUVICA?
IMBRUVICA may cause serious side effects, including:
  • Bleeding problems can happen during treatment with IMBRUVICA that can be serious. Tell your healthcare provider if you have any signs of bleeding, including: blood in your stools or black stools (looks like tar), pink or brown urine, unexpected bleeding or bleeding that is severe or that you can not control, vomit blood or vomit looks like coffee grounds, cough up blood or blood clots, increased bruising, feel dizzy or weak, confusion, change in your speech, or a headache that lasts a long time. Your risk of bleeding may increase if you are also taking a blood thinner medicine.
  • Infections can happen during treatment with IMBRUVICA. Infections can be serious and may lead to death. Tell your healthcare provider if you have fever, chills, or any other signs or symptoms of an infection while taking IMBRUVICA.
  • Decrease in blood cell counts. Your healthcare provider should do monthly blood tests to check your blood counts.
  • Heart rhythm problems (atrial fibrillation and atrial flutter). Heart rhythm problems have happened in people treated with IMBRUVICA, especially in people who have an increased risk for heart disease, have an infection, or who have had heart rhythm problems in the past. Tell your healthcare provider if you get any symptoms of heart rhythm problems, such as feeling as if your heart is beating fast and irregular, lightheadedness, dizziness, shortness of breath, chest discomfort, or you faint.
  • Second primary cancers. New cancers have happened in people who have been treated with IMBRUVICA, including cancers of the skin or other organs.
  • Kidney problems. Kidney failure and death have happened in people with MCL receiving IMBRUVICA treatment.
The most common side effects of IMBRUVICA in people with mantle cell lymphoma (MCL) include: low blood platelet count, diarrhea, low white blood cell count, low red blood cell count, tiredness, muscle and bone pain, swelling of legs and feet, upper respiratory tract infection, nausea, bruising, shortness of breath, constipation, rash, stomach (abdomen) pain, vomiting, and decreased appetite.
The most common side effects of IMBRUVICA in people with chronic lymphocytic leukemia (CLL) include: low blood platelet count, low white blood cell count, diarrhea, low red blood cell count, tiredness, muscle and bone pain, upper respiratory tract infection, rash, nausea, and fever.
Diarrhea is a common side effect in people who take IMBRUVICA. Drink plenty of fluids during treatment with IMBRUVICA to help reduce your risk of losing too much fluid (dehydration) due to diarrhea. Tell your healthcare provider if you have diarrhea that does not go away.
These are not all the possible side effects of IMBRUVICA. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
How should I store IMBRUVICA?
  • Store IMBRUVICA at room temperature between 68°F to 77°F (20°C to 25°C).
  • Keep IMBRUVICA in the original container with the lid tightly closed.
Keep IMBRUVICA and all medicines out of the reach of children.
General information about the safe and effective use of IMBRUVICA
Medicines are sometimes prescribed for purposes other than those listed in a Patient Information leaflet. Do not use IMBRUVICA for a condition for which it was not prescribed. Do not give IMBRUVICA to other people, even if they have the same symptoms that you have. It may harm them. You can ask your pharmacist or healthcare provider for information about IMBRUVICA that is written for health professionals.
What are the ingredients in IMBRUVICA?
Active ingredient: ibrutinib
Inactive ingredients: croscarmellose sodium, magnesium stearate, microcrystalline cellulose, sodium lauryl sulfate. The capsule shell contains gelatin, titanium dioxide and black ink.
Distributed and Marketed by: Pharmacyclics, Inc. Sunnyvale, CA USA 94085 and
Marketed by: Janssen Biotech, Inc. Horsham, PA USA 19044 For more information call 1-877-877-3536.

PRINCIPAL DISPLAY PANEL - 90 Capsule Bottle Carton

NDC 57962-140-09

Imbruvica™
(ibrutinib) capsules

140 mg

Each capsule contains: ibrutinib 140 mg
Swallow capsules whole with water

90 Capsules

Rx Only

pharmacyclics®

Janssen

PRINCIPAL DISPLAY PANEL - 90 Capsule Bottle Carton
IMBRUVICA 
ibrutinib capsule
Product Information
Product TypeHUMAN PRESCRIPTION DRUG LABELItem Code (Source)NDC:57962-140
Route of AdministrationORALDEA Schedule    
Active Ingredient/Active Moiety
Ingredient NameBasis of StrengthStrength
Ibrutinib (Ibrutinib) Ibrutinib140 mg
Inactive Ingredients
Ingredient NameStrength
sodium lauryl sulfate 
croscarmellose sodium 
cellulose, microcrystalline 
Magnesium stearate 
Product Characteristics
ColorWHITEScoreno score
ShapeCAPSULESize22mm
FlavorImprint Code ibr140mg
Contains    
Packaging
#Item CodePackage DescriptionMarketing Start DateMarketing End Date
1NDC:57962-140-0990 in 1 BOTTLE, PLASTIC
2NDC:57962-140-12120 in 1 BOTTLE, PLASTIC
Marketing Information
Marketing CategoryApplication Number or Monograph CitationMarketing Start DateMarketing End Date
NDANDA20555211/07/2013
Labeler - Pharmacyclics, Inc (791179526)
Establishment
NameAddressID/FEIBusiness Operations
Pharmacyclics, Inc791179526ANALYSIS(57962-140)
Establishment
NameAddressID/FEIBusiness Operations
Lonza Guangzhou Nansha Ltd.545328150API MANUFACTURE(57962-140)
Establishment
NameAddressID/FEIBusiness Operations
Micron Technologies226428217PARTICLE SIZE REDUCTION(57962-140)
Establishment
NameAddressID/FEIBusiness Operations
Catalent CTS Inc962674474MANUFACTURE(57962-140), ANALYSIS(57962-140)
Establishment
NameAddressID/FEIBusiness Operations
AndersonBrecon Inc.098908572PACK(57962-140)

Revised: 7/2014
Document Id: d85e602d-8930-49ae-a49a-1c4959397ba6
Set id: 0dfd0279-ff17-4ea9-89be-9803c71bab44
Version: 4
Effective Time: 20140730
 
Pharmacyclics, Inc