Capillary leak syndrome (CLS), including life threatening or fatal reactions, has occurred in patients treated with Proleukin. Do not administer Proleukin to patients with significant cardiac, pulmonary, renal, and hepatic impairment. Administer Proleukin in a hospital setting with an intensive care facility. Withhold or discontinue Proleukin as recommended [see Dosage and Administration (2.4) , Contraindications ...
Indications and uses
Proleukin is indicated for the treatment of adults with metastatic renal cell carcinoma (RCC). Proleukin is indicated for the treatment of adults with metastatic melanoma.
Dosage and administration
Conduct baseline hematologic, chemistry, renal and hepatic function tests. Additionally, evaluate cardiac ejection fraction, coronary artery disease as appropriate, pulmonary function with PFTs, and evaluate for renal, hepatic, and CNS impairment prior to initiating treatment with Proleukin [see Contraindications (4) , Warnings and Precautions (5.1 , 5.2) ]. Verify pregnancy status of females of reproductive poten...
Storage and handling
Proleukin ® (aldesleukin) for injection is supplied in single-dose vials. Each vial contains 22 million International Units (1.3 mg) of Proleukin. NDC 73776-022-01 Individually boxed single-dose vial Store unopened vials refrigerated at 2° to 8°C (36° to 46°F) in the original carton to protect from light. Do not use beyond the expiration date printed on the vial. NOTE: This product contains no preservative.
WARNING: CAPILLARY LEAK SYNDROME (CLS), NEUROLOGIC TOXICITIES and SERIOUS INFECTIONS
BOXED WARNING SECTION
Capillary leak syndrome (CLS), including life threatening or fatal reactions, has occurred in patients treated with Proleukin. Do not administer Proleukin to patients with significant cardiac, pulmonary, renal, and hepatic impairment. Administer Proleukin in a hospital setting with an intensive care facility. Withhold or discontinue Proleukin as recommended
[see
Dosage and Administration (2.4),
Contraindications (4),
Warnings and Precautions (5.1)]
.
Neurologic toxicities, which may be life-threatening or result in coma or permanent neurological deficits, have occurred in patients treated with Proleukin. Withhold or discontinue Proleukin as recommended
[see
Dosage and Administration (2.4),
Warnings and Precautions (5.2)]
.
Serious Infections including sepsis and bacterial endocarditis have occurred in patients treated with Proleukin. Treat pre-existing bacterial infections prior to initiation of Proleukin therapy and withhold Proleukin as recommended
[see
Dosage and Administration (2.4),
Warnings and Precautions (5.3)]
.
1 INDICATIONS AND USAGE
INDICATIONS & USAGE SECTION
1.1 Metastatic Renal Cell Carcinoma
SPL UNCLASSIFIED SECTION
Proleukin is indicated for the treatment of adults with metastatic renal cell carcinoma (RCC).
1.2 Metastatic Melanoma
SPL UNCLASSIFIED SECTION
Proleukin is indicated for the treatment of adults with metastatic melanoma.
2 DOSAGE AND ADMINISTRATION
DOSAGE & ADMINISTRATION SECTION
2.1 Recommended Evaluation and Testing Before Initiating Proleukin
SPL UNCLASSIFIED SECTION
Conduct baseline hematologic, chemistry, renal and hepatic function tests. Additionally, evaluate cardiac ejection fraction, coronary artery disease as appropriate, pulmonary function with PFTs, and evaluate for renal, hepatic, and CNS impairment prior to initiating treatment with Proleukin
[see
Contraindications (4),
Warnings and Precautions (5.1,
5.2)].
Administer Proleukin in an inpatient hospital setting. An intensive care facility with specialists skilled in cardiopulmonary or intensive care medicine must be available
[see
Warnings and Precautions (5.1)]
.
The recommended dosage of Proleukin for metastatic renal cell carcinoma and metastatic melanoma is described in Table 1.
600,000 IU/kg (0.037 mg/kg) every 8 hours; maximum of 14 doses
*
Rest period
Days 6-14
Cycle 2
Days 15-19
600,000 IU/kg (0.037 mg/kg) every 8 hours; maximum of 14 doses
*
* A maximum of 28 doses (2 cycles) per treatment course
Evaluate patients for response approximately 4 weeks after completion of a course of therapy and again immediately prior to the scheduled start of the next treatment course.
Additional courses of treatment may be administered to patients if there is a treatment response following the last course, and the patient did not experience any adverse reactions in previous course(s) that led to permanent discontinuation
[see
Dosage and Administration (2.4)].
Separate each treatment course by a rest period of at least 7 weeks from the date of hospital discharge.
2.3 Premedication and Supportive Medications
SPL UNCLASSIFIED SECTION
Premedicate patients with an antipyretic immediately prior to beginning Proleukin. Continue antipyretics during treatment as needed for fever
[see
Warnings and Precautions (5.1,
5.10)].
Administer prophylactic antibiotics per institutional guidelines prior to beginning Proleukin and throughout the treatment course for patients with indwelling central catheters
[see
Warnings and Precautions (5.3)].
Administer prophylactic medication for gastrointestinal irritation and bleeding during each Proleukin treatment course
[see
Adverse Reactions (6.1)].
Additional medications may be needed if patients experience hypotension, dyspnea, rigors, nausea, diarrhea, pruritis, or dermatitis
[see
Warnings and Precautions (5.1,
5.8,
5.9)].
2.4 Dosage Modifications for Adverse Reactions
SPL UNCLASSIFIED SECTION
No dose reduction for Proleukin is recommended for adverse reactions. In general, withhold or interrupt a dose or permanently discontinue Proleukin based on the severity of the adverse reaction as described in Table 2.
Table 2: Recommended Dosage Modifications for Adverse Reactions
Signs of hepatic toxicity including liver pain or ≥ Grade 3 AST or ALT elevation
Withhold all further treatment for that course. Initiate a new course of treatment no sooner than 7 weeks after signs of hepatic toxicity have resolved and hospital discharge
Serum creatinine >4.5 mg/dL or a serum creatinine of ≥4 mg/dL in the presence of severe volume overload, acidosis, or hyperkalemia
Withhold until serum creatinine levels return to normal (<1.5 mg/dL) or baseline and fluid and electrolyte status are stable
Persistent oliguria, urine output of <10 mL/hr for 16-24 hours with rising SCr
Withhold until urine output >10 mL/hour with a decrease of serum creatinine >1.5 mg/dL or normalization of serum creatinine
Renal failure requiring dialysis >72 hours
Permanently discontinue
2.5 Preparation and Administration
SPL UNCLASSIFIED SECTION
SPL UNCLASSIFIED SECTION
Preparation
Reconstitute Proleukin using Sterile Water for Injection, USP. Do not reconstitute or dilute Proleukin with Bacteriostatic Water for Injection, or 0.9% Sodium Chloride Injection.
Add 1.2 mL of Sterile Water for Injection, USP, by injecting the water along the walls of the vial and not directly on the lyophilized powder. The resulting concentration is 18 million IU (1.1 mg)/mL of Proleukin.
The prepared solution is a clear, colorless to slightly yellow liquid.
Slowly swirl the vial; do not shake.
Withdraw the required dose of Proleukin and discard the vial with any unused portion.
Use polyvinyl chloride bags for dilution of Proleukin and dilute using 5% Dextrose Injection to a concentration between 0.03 mg/mL and 0.07 mg/mL based on the required dose as follows:
Table 3: Recommended Proleukin Dilution
Dose
5% Dextrose Volume
≤25.4 million IU (≤1.5 mg)
25 mL
>25.4 million IU-60 million IU (>1.5 mg-3.5 mg)
50 mL
>60 million IU (>3.5 mg)
100 mL
SPL UNCLASSIFIED SECTION
Storage of Diluted Proleukin Infusion Solution
Store under refrigeration at 2° to 8°C (36° to 46°F) for no more than 48 hours from the time of preparation to the end of the infusion.
Protect from light.
Do not freeze.
Allow the diluted solution to come to room temperature prior to administration.
SPL UNCLASSIFIED SECTION
Administration
Do not use in-line filters when administering Proleukin.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
Do not co-administer Proleukin with other drugs through the same intravenous line.
Administer by intravenous infusion over 15 minutes.
3 DOSAGE FORMS AND STRENGTHS
DOSAGE FORMS & STRENGTHS SECTION
For Injection: 22 million International Units (1.3 mg) of aldesleukin available as a white to off-white, lyophilized powder in a single-dose vial for reconstitution. When reconstituted, each mL contains 18 million International Units (1.1 mg) aldesleukin.
4 CONTRAINDICATIONS
CONTRAINDICATIONS SECTION
Severe Hypersensitivity Reactions
Proleukin is contraindicated in patients with a known history of severe hypersensitivity to aldesleukin or any component of the Proleukin formulation
[see
Adverse Reactions (6.2)].
Proleukin is contraindicated in patients with significant cardiac (including those with an abnormal cardiac ejection fraction, impaired wall motion, or significant coronary artery disease), pulmonary (including those with an FEV1 ≤ 2 liters or < 75% predicted for height and age), renal, hepatic, or CNS impairment
[see
Warnings and Precautions (5.1,
5.2,
5.4)]
.
5 WARNINGS AND PRECAUTIONS
WARNINGS AND PRECAUTIONS SECTION
5.1 Capillary Leak Syndrome
SPL UNCLASSIFIED SECTION
Severe and life-threatening capillary leak syndrome (CLS) characterized by hypotension, dyspnea, edema, and hypoalbuminemia can occur with Proleukin, and can result in end organ toxicity including cardiac, respiratory, renal, hepatic toxicity, or death. Do not administer Proleukin to patients with significant cardiac, pulmonary, renal, or hepatic impairment. Avoid concomitant use of Proleukin with other products known to cause hypotension including antihypertensive drugs, those that cause renal toxicity, or hepatotoxicity.
CLS may begin immediately after Proleukin treatment is initiated. Monitor for signs and symptoms of CLS including assessments of vital signs, weight, fluid intake, albumin levels and urine output.
Withhold or discontinue Proleukin for failure to maintain organ perfusion as demonstrated by altered mental status, reduced urine output, oxygen saturation <90%, a fall in the systolic blood pressure below 90 mm Hg, or onset of cardiac arrhythmias. Initiate standard management for CLS, which may include intensive care
[see
Dosage and Administration (2.4),
Use in Specific Populations (8.1)]
.
5.2 Neurologic Toxicity
SPL UNCLASSIFIED SECTION
Proleukin can cause neurologic toxicities including mental status changes, speech difficulties, cortical blindness, limb or gait ataxia, hallucinations, agitation, obtundation, demyelinating polyneuropathy, and coma. Alterations in mental status may progress for several days before recovery begins. Permanent neurologic deficits have occurred. Radiological findings included multiple and, less commonly, single cortical lesions on MRI and evidence of demyelination. One case of possible cerebral vasculitis has been reported.
Monitor patients for signs and symptoms of neurological toxicity during Proleukin treatment. Withhold Proleukin in patients developing moderate to severe lethargy or somnolence; continued administration may result in coma. Permanently discontinue Proleukin for coma or toxic psychosis lasting >48 hours or for repetitive or difficult to control seizures
[see
Dosage and Administration (2.4)].
Evaluate and treat CNS metastases prior to initiation of Proleukin. If possible, avoid concomitant use of Proleukin with other product(s) with a known potential to cause neurotoxicity, and avoid Proleukin in patients with seizure disorders or abnormal intracranial imaging
[see
Contraindications (4),
Adverse Reactions (6.1,
6.2)]
. Concomitant use of Proleukin with other products that cause neurotoxicity may result in a greater risk of severe neurotoxicity.
5.3 Serious Infections Including Sepsis
SPL UNCLASSIFIED SECTION
Proleukin can cause impaired neutrophil function (reduced chemotaxis) and an increased risk of disseminated infection, including sepsis and bacterial endocarditis. Treat pre-existing bacterial infections prior to initiating Proleukin. Consider antibiotic prophylaxis in patients with indwelling central lines. Monitor patients for the development of signs and symptoms of infection during treatment and withhold Proleukin based on severity
[see
Dosage and Administration (2.4)].
5.4 Renal Toxicity
SPL UNCLASSIFIED SECTION
Serious renal toxicity, including oliguria and renal failure can occur with Proleukin
[see
Adverse Reactions (6.1,
6.2)]
. Pre-existing renal impairment or coadministration of Proleukin with other products known to cause renal toxicity may increase this risk. If possible, avoid concomitant use of Proleukin with other product(s) with a known potential to cause renal toxicity. Serum creatinine should be ≤1.5 mg/dL before beginning Proleukin. Monitor serum creatinine at baseline and daily throughout each course of therapy. Withhold Proleukin, or permanently discontinue, based on severity
[see
Dosage and Administration (2.4)]
.
5.5 Immune-mediated Adverse Reactions
SPL UNCLASSIFIED SECTION
Exacerbation of pre-existing autoimmune disease or initial presentation of autoimmune and inflammatory disorders has been reported following treatment with Proleukin. Immune-mediated adverse reactions, which may be severe or fatal, can occur in any organ system or tissue. These have included exacerbation of Crohn's disease, colitis, scleroderma, thyroiditis, inflammatory arthritis, diabetes mellitus, oculo-bulbar myasthenia gravis, crescentic IgA glomerulonephritis, cholecystitis, cerebral vasculitis, Stevens-Johnson syndrome, bullous pemphigoid, myocarditis, myositis, and neuritis including optic neuritis resulting in blindness
[see
Adverse Reactions (6.2)]
.
Proleukin may increase the risk of allograft rejection in transplant patients
[see
Contraindications (4)]
.
Hypothyroidism, sometimes preceded by hyperthyroidism, has been reported following Proleukin treatment. Evaluate thyroid function at baseline and periodically during treatment and initiate thyroid replacement therapy as clinically indicated.
Hyperglycemia and/or diabetes mellitus has been reported during Proleukin therapy. Monitor patients for hyperglycemia and initiate treatment with insulin as clinically indicated.
5.6 Embryo-Fetal Toxicity
SPL UNCLASSIFIED SECTION
Based on findings in an animal study and its mechanism of action, Proleukin may cause fetal harm or loss of pregnancy when administered to a pregnant woman. In pregnant rats, aldesleukin has been shown to have embryolethal effects at doses 27 times and maternal toxicities at doses 2.1 times the human exposure at the recommended clinical dose. Advise pregnant women of the potential risk to a fetus. Advise female patients of reproductive potential to use effective contraception during treatment with Proleukin
[see
Use in Specific Populations (8.1,
8.3)].
5.7 Serious Manifestations of Eosinophilia
SPL UNCLASSIFIED SECTION
Serious manifestations of eosinophilia involving eosinophilic infiltration of cardiac and pulmonary tissues can occur following Proleukin.
5.8 Delayed Adverse Reactions to Iodinated Contrast Media
SPL UNCLASSIFIED SECTION
A review of the literature revealed that 12.6% (range 11-28%) of 501 patients treated with various interleukin-2-containing regimens who were subsequently administered radiographic iodinated contrast media experienced acute, atypical adverse reactions. The onset of symptoms usually occurred within hours (most commonly 1 to 4 hours) following the administration of contrast media. These reactions include fever, chills, nausea, vomiting, pruritus, rash, diarrhea, hypotension, edema, and oliguria. These reactions may resemble the immediate side effects caused by interleukin-2 administration. Most events were reported to occur when contrast media was given within 4 weeks after the last dose of interleukin-2. These events were also reported to occur when contrast media was given several months after interleukin-2 treatment
[see
Adverse Reactions (6.2)]
.
5.9 Severe Hypersensitivity Reactions
SPL UNCLASSIFIED SECTION
Proleukin can cause severe hypersensitivity reactions, including anaphylactic reactions. Permanently discontinue Proleukin in patients who experience a severe hypersensitivity reaction
[see
Contraindications (4),
Adverse Reactions (6.2)].
5.10 Infusion-Related Reactions
SPL UNCLASSIFIED SECTION
Proleukin can cause fevers, chills, or rigors. Premedicate patients with an antipyretic prior to beginning Proleukin and continue during treatment as needed for fever
[see
Adverse Reactions (6.2)and
Dosage and Administration (2.3)].
6 ADVERSE REACTIONS
ADVERSE REACTIONS SECTION
The following clinically significant adverse reactions are described elsewhere in the labeling:
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.
The safety of Proleukin was evaluated in a series of single and multicenter, controlled studies enrolling a total of 525 patients with metastatic renal cell carcinoma (mRCC studies) or metastatic melanoma (metastatic melanoma studies)
[see
Clinical Studies (14.1,
14.2)]
.
In patients who received Proleukin in these studies, fatal adverse reactions occurred in 4% (11/255) of the patients with metastatic RCC, and 2% (6/270) of the patients with metastatic melanoma.
The most common (≥30%) adverse reactions were hypotension, hyperbilirubinemia, dyspnea, rash, diarrhea, oliguria, chills, vomiting, thrombocytopenia, nausea, confusional state, and increased creatinine.
Table 4 summarizes adverse reactions that occurred in these studies.
Table 4: Adverse Reactions (≥10% all grades or ≥1% Grade 4) in Patients with Metastatic Renal Cell Carcinoma or Metastatic Melanoma (n=525) receiving Proleukin
The following serious adverse reactions were reported in patients with RCC, melanoma, or other cancers treated with Proleukin-based regimens (n >1800 patients) using dosages other than the recommended dosage:
In the same clinical population, the following fatal events each occurred with a frequency of <1%: hyperthermia malignant; cardiac arrest; myocardial infarction; pulmonary embolism; cerebrovascular accident; intestinal perforation; hepatic failure or renal failure; severe depression leading to suicide; pulmonary edema; respiratory arrest; respiratory failure. Patients with ECOG PS of 1 or higher had a higher treatment-related mortality and serious adverse events.
6.2 Postmarketing Experience
POSTMARKETING EXPERIENCE SECTION
The following adverse reactions have been identified during post-approval use of Proleukin. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.
Blood and lymphatic system disorders: neutropenia, febrile neutropenia, eosinophilia, lymphopenia
Drug interaction studies with Proleukin have not been conducted. The drug interaction information described below have been observed post-marketing.
7.1 Effect of Other Drugs on Proleukin
SPL UNCLASSIFIED SECTION
SPL UNCLASSIFIED SECTION
Glucocorticoids
Avoid concomitant use of glucocorticoids. Coadministration with glucocorticoids may reduce aldesleukin antitumor effectiveness.
7.2 Effect of Proleukin on Other Drugs
SPL UNCLASSIFIED SECTION
SPL UNCLASSIFIED SECTION
Radiographic Iodinated Contrast Media
Monitor for delayed adverse reactions in patients receiving iodinated contrast media following Proleukin. Administration of radiographic iodinated contrast media following administration of interleukin-2 resulted in acute, atypical adverse reactions that resemble the immediate side effects caused by Proleukin in some patients
[see
Warnings and Precautions (5.8)]
.
SPL UNCLASSIFIED SECTION
Effect on Cytochrome P-450 Substrates
For certain CYP substrates, minimal changes in the concentration may lead to serious adverse reactions. Monitor for toxicity or drug concentration changes of such CYP substrates when co-administered with Proleukin.
Aldesleukin causes release of cytokines
[see
Clinical Pharmacology (12.2)]
that may suppress activity of CYP enzymes, resulting in increased exposure of CYP substrates.
8 USE IN SPECIFIC POPULATIONS
USE IN SPECIFIC POPULATIONS SECTION
8.1 Pregnancy
PREGNANCY SECTION
SPL UNCLASSIFIED SECTION
Risk Summary
Based on findings in an animal study and its mechanism of action, Proleukin may cause fetal harm or loss of pregnancy when administered to a pregnant woman
[see
Clinical Pharmacology (12.1)].
Data on the use of Proleukin in pregnant women are limited and insufficient to assess the drug-associated risk of major birth defects, miscarriage, or other adverse maternal or fetal outcomes; however, development of capillary leak syndrome during pregnancy can lead to adverse fetal outcomes
(see
Clinical Considerations)
.
Intravenous administration of aldesleukin to pregnant rats during the period of organogenesis resulted in embryo lethality at doses 27 times and maternal toxicities at doses 2.1 times the human exposure at the recommended clinical dose
(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%–4% and 15–20%, respectively.
SPL UNCLASSIFIED SECTION
Clinical Considerations
SPL UNCLASSIFIED SECTION
Fetal/Neonatal Adverse Reactions
Capillary leak syndrome in women who are exposed to Proleukin during pregnancy may result in maternal hypotension and decreased placental perfusion. Severe or prolonged maternal hypotension and decreased placental perfusion can lead to intrauterine growth restriction, perinatal asphyxia, or fetal/neonatal demise. Monitor fetal and neonatal status in pregnant women who develop capillary leak syndrome associated with Proleukin.
SPL UNCLASSIFIED SECTION
Data
SPL UNCLASSIFIED SECTION
Animal Data
Aldesleukin has been shown to have embryolethal effects in rats when given in doses at 27 to 36 times the human dose (scaled by body weight). Significant maternal toxicities were observed in pregnant rats administered aldesleukin by IV injection at doses 2.1 to 36 times higher than the human dose during critical period of organogenesis.
8.2 Lactation
LACTATION SECTION
SPL UNCLASSIFIED SECTION
Risk Summary
There are no data on the presence of aldesleukin in either human or animal milk, the effects on the breastfed child, or the effects on milk production. Maternal cytokines are known to be present in human breast milk. Because of the potential for serious adverse reactions from Proleukin in a breastfed child, such as impaired immune function, advise women not to breastfeed during treatment.
Advise females of reproductive potential to use effective contraception during treatment with Proleukin.
8.4 Pediatric Use
PEDIATRIC USE SECTION
The safety and effectiveness of Proleukin have not been established in pediatric patients.
8.5 Geriatric Use
GERIATRIC USE SECTION
Clinical studies of Proleukin did not include sufficient numbers of patients 65 years of age and older to determine whether they respond differently from younger adult patients.
10 OVERDOSAGE
OVERDOSAGE SECTION
Exceeding the recommended dose of Proleukin has been associated with a more rapid onset of severe or life-threatening toxicities. Treat toxicities supportively; life-threatening toxicities may be ameliorated by the intravenous administration of dexamethasone.
11 DESCRIPTION
DESCRIPTION SECTION
Aldesleukin is a human interleukin-2 lymphocyte growth factor produced by recombinant DNA technology using a genetically engineered
E. colistrain containing an analog of the human interleukin-2 gene. It is a purified protein with a molecular weight of approximately 15,300 Da. This recombinant form differs from native interleukin-2 in the following ways: a) aldesleukin is not glycosylated; b) the molecule has no N-terminal alanine; c) the molecule has serine substituted for cysteine at amino acid position 125. Proleukin exists as biologically active, non-covalently bound microaggregates with an average size of 27 recombinant interleukin-2 molecules; the aggregation state of aldesleukin may differ compared to native interleukin-2.
The manufacturing process for aldesleukin involves fermentation in a defined medium containing tetracycline hydrochloride. The presence of tetracycline hydrochloride is not detectable in the final product.
Proleukin (aldesleukin) for injection is a sterile, preservative-free white to off-white, lyophilized powder, which has a cake-like appearance, supplied in single-dose vials for intravenous administration after reconstitution and dilution. When reconstituted with 1.2 mL Sterile Water for Injection, USP, each mL contains 18 million International Units (1.1 mg) aldesleukin, mannitol (50 mg), sodium dodecyl sulfate (0.19 mg), buffered with disodium hydrogen phosphate dihydrate (1.12 mg) and sodium dihydrogen phosphate dihydrate (0.19 mg) to a pH of 7.5 (range 7.2 to 7.8).
12 CLINICAL PHARMACOLOGY
CLINICAL PHARMACOLOGY SECTION
12.1 Mechanism of Action
MECHANISM OF ACTION SECTION
Aldesleukin is an interleukin-2 lymphocyte growth factor. The antitumor activity of aldesleukin has not been fully characterized.
In vitrostudies performed on human cell lines show enhancement of lymphocyte mitogenesis and cytotoxicity, induction of killer cell activity [lymphokine-activated killer (LAK) and natural killer (NK) cells] and interferon gamma production, and proliferation of human interleukin-2-dependent cell lines.
Administration of aldesleukin in animals and humans produces multiple immunological effects in a dose-dependent manner. These effects include activation of cellular immunity and the production of cytokines including tumor necrosis factor, IL-1, and interferon gamma.
In vivoexperiments in murine melanoma and sarcoma tumor models have shown inhibition of tumor growth.
12.2 Pharmacodynamics
PHARMACODYNAMICS SECTION
Dose-dependent immunological effects including activation of cellular immunity with lymphocytosis, eosinophilia, and thrombocytopenia, and the production of cytokines including tumor necrosis factor, IL-1, and gamma interferon were observed following administration of aldesleukin in animals and humans.
Aldesleukin exposure-response relationships and the time course of pharmacodynamic response are unknown.
12.3 Pharmacokinetics
PHARMACOKINETICS SECTION
Aldesleukin serum concentrations change proportionally with the Proleukin dosage.
SPL UNCLASSIFIED SECTION
Distribution
Aldesleukin is rapidly distributed (distribution half-life of 13 minutes) into the extravascular space following a Proleukin intravenous infusion.
SPL UNCLASSIFIED SECTION
Elimination
The serum elimination half-life aldesleukin is 85 minutes in patients with cancer following a 5-minute intravenous infusion of Proleukin. The mean clearance rate of aldesleukin is 268 mL/min.
SPL UNCLASSIFIED SECTION
Metabolism
Aldesleukin is metabolized to amino acids in the proximal convoluted tubules of the kidney.
SPL UNCLASSIFIED SECTION
Excretion
Aldesleukin is primarily excreted in the kidney by both glomerular filtration and peritubular extraction. In the kidney it is metabolized and excreted into urine with little or no aldesleukin present.
12.6 Immunogenicity
IMMUNOGENICITY
The observed incidence of anti-drug antibodies is highly dependent on the sensitivity and specificity of the assay. Differences in assay methods preclude meaningful comparisons of the incidence of anti-drug antibodies in the studies described below with the incidence of anti-drug antibodies in other studies.
In clinical studies, using an enzyme-linked immunosorbent assay (ELISA), low titers of anti-aldesleukin antibodies were observed in 74% (57 of 77) of patients with metastatic renal cell carcinoma treated with an every 8-hour Proleukin regimen and in 66% (33 of 50) of patients with metastatic melanoma treated with a variety of intravenous regimens. In a separate study in 13 patients, following the first cycle of therapy, the geometric mean aldesleukin exposure (AUC) on Day 15 compared to Day 1 increased by 68% in 11 patients who developed anti-aldesleukin antibodies while no change was observed in the 2 antibody-negative patients. Overall, neutralizing antibodies were detected in 1 patient. Based on these data, the clinical relevance of anti-aldesleukin antibodies could not be assessed.
13 NONCLINICAL TOXICOLOGY
NONCLINICAL TOXICOLOGY SECTION
13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility
CARCINOGENESIS & MUTAGENESIS & IMPAIRMENT OF FERTILITY SECTION
The carcinogenic and genotoxic potential of aldesleukin have not been evaluated.
Animal fertility studies have not been conducted with aldesleukin.
13.2 Animal Toxicology and/or Pharmacology
ANIMAL PHARMACOLOGY & OR TOXICOLOGY SECTION
Repeated doses of aldesleukin administered to animals intravenously resulted in dose-dependent extramedullary hematopoiesis and lymphoid hyperplasia.
14 CLINICAL STUDIES
CLINICAL STUDIES SECTION
14.1 Metastatic Renal Cell Cancer
SPL UNCLASSIFIED SECTION
The efficacy of Proleukin was evaluated in two hundred fifty-five patients with metastatic renal cell carcinoma (mRCC) in 7 clinical studies conducted at 21 institutions (mRCC studies). Eligible patients had an Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) of 0 or 1 and normal organ function as determined by cardiac stress test, pulmonary function tests, and creatinine ≤1.5 mg/dL. Studies excluded patients with brain metastases, active infections, organ allografts, and diseases requiring steroid treatment. Not all patients in these studies received the recommended Proleukin dosing regimen.
The major efficacy outcome measure was objective response rate (ORR) determined by investigator assessment per ECOG response criteria for solid tumors (1982).
Efficacy results are summarized in Table 5.
Table 5: Proleukin Efficacy Results in mRCC Studies
The efficacy of Proleukin was evaluated in two hundred seventy patients with metastatic melanoma in 8 clinical studies conducted at 22 institutions (metastatic melanoma studies). Eligible patients had an Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) of 0 or 1 and normal organ function as determined by cardiac stress test, pulmonary function tests, and creatinine ≤1.5 mg/dL. Studies excluded patients with brain metastases, active infections, organ allografts, and diseases requiring steroid treatment. Not all patients in these studies received the recommended Proleukin dosing regimen.
Patients with metastatic melanoma received a median of 18 of the 28 scheduled doses of Proleukin during the first course of therapy.
The major efficacy outcome measure was objective response rate (ORR) determined by investigator assessment per ECOG response criteria for solid tumors (1982).
Efficacy results are summarized in Table 6.
Table 6: Proleukin Efficacy Results in Metastatic Melanoma Studies
Store unopened vials refrigerated at 2° to 8°C (36° to 46°F) in the original carton to protect from light.
Do not use beyond the expiration date printed on the vial.
NOTE:This product contains no preservative.
17 PATIENT COUNSELING INFORMATION
INFORMATION FOR PATIENTS SECTION
Inform patients or caregivers of the following risks of Proleukin:
SPL UNCLASSIFIED SECTION
Capillary Leak Syndrome
Advise patients about the risk of capillary leak syndrome and to inform their healthcare provider immediately if they develop new or worsening symptoms of hypotension, dyspnea, or edema
[see
Warnings and Precautions (5.1)].
SPL UNCLASSIFIED SECTION
Neurotoxicity
Advise the patient to inform their healthcare provider immediately if they develop mental status changes, speech difficulties, blindness, ataxia, hallucinations, agitation, or experienced a seizure
[see
Warnings and Precautions (5.2)].
SPL UNCLASSIFIED SECTION
Serious Infections Including Sepsis
Advise patients to inform their healthcare provider immediately if they develop signs of infection or sepsis including fever, chills, weakness, dyspnea
[see
Warnings and Precautions (5.3)].
SPL UNCLASSIFIED SECTION
Immune-mediated Adverse Reactions
Advise patients that Proleukin can cause immune-mediated adverse reactions and can exacerbate pre-existing autoimmune disease. These immune-mediated adverse reactions can occur in any organ system or tissue. Proleukin may also increase the risk of allograft rejection in transplant patients. Advise patients to contact their healthcare provider for any new or worsening signs or symptoms
[see
Warnings and Precautions (5.5)]
.
Hypothyroidism, sometimes preceded by hyperthyroidism, has been reported following Proleukin treatment. Evaluate thyroid function at baseline and periodically during treatment and initiate thyroid replacement therapy as clinically indicated.
Hyperglycemia and/or diabetes mellitus has been reported during Proleukin therapy. Monitor patients for hyperglycemia and initiate treatment with insulin as clinically indicated.
SPL UNCLASSIFIED SECTION
Serious Manifestations of Eosinophilia
Advise patients to inform their healthcare provider immediately if they develop serious symptoms of eosinophilia including new severe rash or dyspnea
[see
Warnings and Precautions (5.7)].
SPL UNCLASSIFIED SECTION
Delayed Adverse Reactions to Iodinated Contrast Media
Advise patients to inform their health care provider that they received Proleukin prior to undergoing imaging that requires iodinated contrast material
[see
Warnings and Precautions (5.8)].
Advise patients to inform their healthcare provider if they develop signs and symptoms of hypersensitivity reactions
[see
Warnings and Precautions (5.9)].
SPL UNCLASSIFIED SECTION
Manufactured by:
Iovance Biotherapeutics Manufacturing LLC
Philadelphia, PA 19112
U.S. License No. 2353
At
Boehringer Ingelheim Pharma
Biberach/Riss, Germany
For additional information, contact Iovance Biotherapeutics Manufacturing LLC. 1-844-845-IOVA (1-844-845-4682)
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