Tacrolimus

1 INDICATIONS AND USAGE Tacrolimus extended-release capsules is indicated for the prophylaxis of organ rejection in kidney transplant patients in combination with other immunosuppressants in adult patients who can swallow capsules intact [see Clinical Studies ( 14.1 ), ( 14.2 )] . Pediatric use information is approved for Astellas Pharma US, Inc.'s ASTAGRAF XL (tacrolimus extended-release capsules). However, due to Astellas Pharma US, Inc.'s marketing exclusivity rights, this drug product is not labeled with that information. Tacrolimus extended-release capsules is a calcineurin-inhibitor immunosuppressant indicated for the prophylaxis of organ rejection in kidney transplant patients in combination with other immunosuppressants in adult patients who can swallow capsules intact. ( 1 , 14.1 , 14.2 )

12.1 Mechanism of Action Tacrolimus binds to an intracellular protein, FKBP-12. A complex of tacrolimus-FKBP-12, calcium, calmodulin, and calcineurin (a ubiquitous mammalian intracellular enzyme) is then formed and the phosphatase activity of calcineurin is inhibited. Such inhibition prevents the dephosphorylation and translocation of various factors such as the nuclear factor of activated T-cells (NF-AT), and nuclear factor kappa-light-chain-enhancer of activated B-cells (NF-κB). Tacrolimus inhibits the expression and/or production of several cytokines that include interleukin (IL)-1 beta, IL‑2, IL-3, IL-4, IL-5, IL-6, IL-8, IL-10, gamma interferon, tumor necrosis factor-alpha, and granulocyte macrophage colony-stimulating factor. Tacrolimus also inhibits IL-2 receptor expression and nitric oxide release, induces apoptosis and production of transforming growth factor-beta that can lead to immunosuppressive activity. The net result is the inhibition of T-lymphocyte activation and proliferation as well as T-helper-cell-dependent B-cell response (i.e., immunosuppression).

2 DOSAGE AND ADMINISTRATION Capsules must be taken whole. ( 2.1 ) Take consistently every morning at the same time on an empty stomach at least 1 hour before a meal or at least 2 hours after a meal. ( 2.1 ) Avoid eating grapefruit or drinking grapefruit juice or alcohol. ( 2.1 ) African-American patients and patients with severe hepatic impairment may require dosing adjustments. ( 2.3 ) Frequent monitoring of trough concentrations is recommended. ( 2.4 ) For complete dosing information, see Full Prescribing Information. MMF = Mycophenolate mofetil Recommended Tacrolimus Extended-Release Capsules Initial Dosage Patient Population Initial Oral Dosage Whole Blood Trough Concentration Range ADULT With basiliximab, MMF and steroids 0.15 mg/kg to 0.2 mg/kg once daily prior to reperfusion or within 48 hours of completion of transplant Month 1: 7 ng/mL to 15 ng/mL Month 2 to Month 6: 5 ng/mL to 15 ng/mL More than 6 Months: 5 ng/mL to 10 ng/mL With MMF and steroids, without basiliximab induction First dose (pre-operative): 0.1 mg/kg, within 12 hours prior to reperfusion Subsequent doses (post-operative): 0.2 mg/kg once daily at least 4 hours after pre-operative dose and within 12 hours after reperfusion Month 1: 10 ng/mL to 15 ng/mL Month 2 to Month 6: 5 ng/mL to 15 ng/mL More than 6 Months: 5 ng/mL to 10 ng/mL 2.1 Important Administration Instructions Tacrolimus extended-release capsules should not be used without the supervision by a physician with experience in immunosuppressive therapy. Tacrolimus extended-release capsules is not interchangeable or substitutable for tacrolimus extended-release tablets, tacrolimus immediate-release capsules or tacrolimus for oral suspension. Under or overexposure to tacrolimus may result in graft rejection or other serious adverse reactions. Changes between tacrolimus immediate-release and extended-release dosage forms must occur under physician supervision [see Warnings and Precautions ( 5.4 )]. Advise patients to swallow tacrolimus extended-release capsules whole with liquid; patients must not chew, divide, or crush the capsules. Tacrolimus extended-release capsules should be taken consistently every morning at the same time to ensure consistent and maximum possible drug exposure, on an empty stomach at least 1 hour before a meal, or at least 2 hours after a meal [see Clinical Pharmacology ( 12.3 )]. If a dose is missed, the dose may be taken up to 14 hours after the scheduled time (i.e., for a missed 8:00 AM dose, a dose may be taken by 10:00 PM). Beyond the 14-hour time frame, the patient should wait until the usual scheduled time the following morning to take the next regular daily dose. Instruct the patient not to double the next dose. Advise patients to avoid eating grapefruit or drinking grapefruit juice or alcoholic beverages while taking tacrolimus extended-release capsules [see Drug Interactions ( 7.2 )]. Therapeutic drug monitoring is recommended for all patients receiving tacrolimus extended-release capsules [see Dosage and Administration ( 2.4 )] . 2.2 Dosage Recommendations for Kidney Transplant Patients Table 1 includes the recommended starting tacrolimus extended-release capsules dosages and whole blood trough concentration ranges; the observed trough concentrations are shown in another section of the Full Prescribing Information [see Clinical Studies ( 14 )] . Titrate the tacrolimus extended-release capsules dosage based on clinical assessments of rejection and tolerability, and to achieve target trough concentration ranges [see Dosage and Administration ( 2.4 ) and Warnings and Precautions ( 5.6 , 5.7 , 5.10 , 5.11 )] . Table 1: Recommended Starting Daily Dosage Regimen of Tacrolimus Extended-Release Capsules MMF = mycophenolate mofetil Recommended Tacrolimus Extended-Release Capsules Initial Dosage* Patient Population Initial Oral Dosage Whole Blood Trough Concentration Range ADULT With basiliximab, MMF and steroids 0.15 mg/kg to 0.2 mg/kg once daily prior to reperfusion or withi

6 ADVERSE REACTIONS The following clinically significant adverse drug reactions are discussed in greater detail in other sections of labeling: Lymphoma and Other Malignancies [see Warnings and Precautions ( 5.1 )] Serious Infections [see Warnings and Precautions ( 5.2 )] Increased Mortality in Female Liver Transplant Patients [see Warnings and Precautions ( 5.3 )] New Onset Diabetes after Transplant [see Warnings and Precautions ( 5.5 )] Nephrotoxicity due to Tacrolimus Extended-Release Capsules and Drug Interactions [see Warnings and Precautions ( 5.6 )] Neurotoxicity [see Warnings and Precautions ( 5.7 )] Hyperkalemia [see Warnings and Precautions ( 5.8 )] Hypertension [see Warnings and Precautions ( 5.9 )] QT Prolongation [see Warnings and Precautions ( 5.11 )] Pure Red Cell Aplasia [see Warnings and Precautions ( 5.13 )] Thrombotic Microangiopathy, Including Hemolytic Uremic Syndrome and Thrombotic Thrombocytopenic Purpura [see Warnings and Precautions (5.14) ] The most common adverse reactions (≥ 30%) are: diarrhea, constipation, nausea, peripheral edema, tremor and anemia. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact eVenus Pharmaceutical Laboratories, Inc. at 1-609-395-8625 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Studies 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 to rates in the clinical trials of another drug and may not reflect the rates observed in practice. In addition, the clinical trials were not designed to establish comparative differences across study arms with regards to the adverse reactions discussed below. Kidney transplant patients were treated with tacrolimus extended-release capsules (N=214) or tacrolimus immediate-release product (N=212) and concomitant immunosuppressants (median duration of exposure of 12 months) in a randomized, open-label, active-controlled trial of mostly U.S. patients (Study 1) [see Clinical Studies ( 14.1 )] . The types of adverse reactions seen in Study 1 were similar to the adverse reactions seen in Study 2 [non-U.S. trial in kidney transplant patients treated with tacrolimus extended-release capsules (N=331) or tacrolimus immediate-release product (N=336) and concomitant immunosuppressants] [see Clinical Studies ( 14.2 )] . In Study 1, the proportion of patients who discontinued treatment due to adverse reactions was 9% and 11% in the tacrolimus extended-release capsules and tacrolimus immediate-release treatment groups, respectively, through 12 months of treatment. The most common adverse reactions leading to discontinuation in tacrolimus extended-release capsules-treated patients were related to infections or renal/urinary disorders. Infections The overall incidence of infections, serious infections, and infections with identified etiology reported in patients treated with the tacrolimus extended-release capsules or tacrolimus immediate-release product in Study 1 are shown in Table 2 . Table 2: Percentage of Patients with Infections in Study 1 Study 1 was not designed to support comparative claims of tacrolimus extended-release capsules compared to tacrolimus immediate-release product for the adverse reactions reported in this table. Through One Year Post-Kidney Transplant Tacrolimus extended-release capsules, MMF, steroids, basiliximab induction N=214 Tacrolimus immediate-release product, MMF, steroids, basiliximab induction N=212 All Infections 69% 69% Respiratory Infections 34% 31% Urinary Tract Infections 16% 25% Cytomegalovirus Infections 10% 11% Bacterial Infections 8% 12% Gastroenteritis 7% 3% Polyomavirus Infections 3% 5% Serious Infections 22% 23% New Onset Diabetes After Transplant (NODAT) The incidence of new onset diabetes after transplantation (defined by the composite occurrence of ≥ 2 fasting plasma glucose values that were more than 126 mg/dL at ≥ 30 days apart, insulin use for ≥ 30 consecutive da

5 WARNINGS AND PRECAUTIONS Not Interchangeable with Other Tacrolimus Products-Medication Errors: Instruct patients or caregivers to recognize the appearance of tacrolimus extended-release capsules. ( 5.4 ) New onset diabetes after transplant: Monitor blood glucose. ( 5.5 ) Nephrotoxicity (acute and/or chronic): May occur due to tacrolimus extended-release capsules, drug interactions, concomitant nephrotoxic drugs. Monitor renal function; consider dosage reduction. ( 5.6 ) Neurotoxicity: Including risk of posterior reversible encephalopathy syndrome (PRES), monitor for neurologic abnormalities; reduce dosage or discontinue tacrolimus extended-release capsules. ( 5.7 ) Hyperkalemia: Risk may be increased with other agents associated with hyperkalemia; monitor serum potassium levels. ( 5.8 ) Hypertension: May require antihypertensive therapy; monitor relevant drug interactions. ( 5.9 ) QT prolongation: Consider obtaining electrocardiograms and monitoring electrolytes in patients at high risk. ( 5.11 ) Immunizations: Avoid live vaccines. ( 5.12 ) Pure red cell aplasia: Consider discontinuation of tacrolimus extended-release capsules. ( 5.13 ) Thrombotic Microangiopathy, Including Hemolytic Uremic Syndrome and Thrombotic Thrombocytopenic Purpura: May occur, especially in patients with infections and certain concomitant medications. ( 5.14 ) 5.1 Lymphoma and Other Malignancies Immunosuppressants, including tacrolimus extended-release capsules, increase the risk of developing lymphomas and other malignancies, particularly of the skin . The risk appears to be related to the intensity and duration of immunosuppression rather than to the use of any specific agent. Examine patients for skin changes and advise to avoid or limit exposure to sunlight and UV light by wearing protective clothing and using a broad-spectrum sunscreen with a high protection factor. Post-transplant lymphoproliferative disorder (PTLD), associated with Epstein-Barr Virus (EBV), has been reported in immunosuppressed organ transplant patients. The risk of PTLD appears greatest in patients who are EBV seronegative, a population which includes many young children. Monitor EBV serology during treatment. 5.2 Serious Infections Immunosuppressants, including tacrolimus extended-release capsules, increase the risk of developing bacterial, viral, fungal, and protozoal infections, including opportunistic infections. These infections may lead to serious, including fatal, outcomes. Serious viral infections reported include: Polyomavirus-associated nephropathy (especially due to BK virus infection) JC virus-associated progressive multifocal leukoencephalopathy (PML) Cytomegalovirus (CMV) infections: CMV seronegative transplant patients who receive an organ from a CMV seropositive donor are at highest risk of CMV viremia and CMV disease. Monitor for the development of infection and adjust the immunosuppressive regimen to balance the risk of rejection with the risk of infection [see Adverse Reactions ( 6.1 , 6.2 )] . 5.3 Increased Mortality in Female Liver Transplant Patients In a clinical trial of 471 liver transplant patients randomized to tacrolimus extended-release capsules or tacrolimus immediate-release product, mortality at 12 months was 10% higher among the 76 female patients (18%) treated with tacrolimus extended-release capsules compared to the 64 female patients (8%) treated with tacrolimus immediate-release product. Tacrolimus extended-release capsules is not approved for the prophylaxis of organ rejection in patients who received a liver transplant. 5.4 Not Interchangeable with Other Tacrolimus Products - Medication Errors Medication errors, including substitution and dispensing errors, between tacrolimus immediate-release products and tacrolimus extended-release capsules were reported outside the U.S. This led to serious adverse reactions, including graft rejection, or other adverse reactions due to under- or over-exposure to tacrolimus. Tacrolimus extended-release c

4 CONTRAINDICATIONS Tacrolimus extended-release capsules is contraindicated in patients with known hypersensitivity to tacrolimus [see Adverse Reactions ( 6.2 )] . Known hypersensitivity to tacrolimus. ( 4 )

10 OVERDOSAGE Postmarketing cases of overdose with tacrolimus have been reported. Overdosage adverse reactions included: nervous system disorders (tremor, headache, confusional state, balance disorders, encephalopathy, lethargy and somnolence) gastrointestinal disturbances (nausea, vomiting, and diarrhea) abnormal renal function (increased blood urea nitrogen and elevated serum creatinine) urticaria hypertension peripheral edema, and infections [one fatal postmarketing case of bilateral pneumopathy and CMV infection was attributed to tacrolimus (extended-release) overdose]. Based on the poor aqueous solubility and extensive erythrocyte and plasma protein binding, it is anticipated that tacrolimus is not dialyzable to any significant extent; there is no experience with charcoal hemoperfusion. The oral use of activated charcoal has been reported in treating acute overdoses, but experience has not been sufficient to warrant recommending its use. General supportive measures and treatment of specific symptoms should be followed in all cases of overdosage.