DESCRIPTION SECTION.


11 DESCRIPTION. HYFTOR(TM) (sirolimus topical gel) 0.2% is an mTOR inhibitor immunosuppressant for topical use. Each gram contains mg of sirolimus, which is solubilized in gel consisting of alcohol 51%, Carbomer 940, purified water, and trolamine.Chemically, sirolimus is designated as (3 S,6 R,7 E,9 R,10 R,12 R,14 S,15 E,17 E,19 E,21 S,23 S,26 R,27 R,34a S)-9,10,12,13,14,21,22,23,24,25,26,27,32,33,34,34a-hexadecahydro-9,27-dihydroxy-3-[(1 R)-2-[(1 S,3 R,4 R)-4-hydroxy-3-methoxycyclohexyl]-1-methylethyl]-10,21-dimethoxy-6,8,12,14,20,26-hexamethyl-23,27-epoxy-3 H-pyrido[2,1- c][1,4]oxaazacyclohentriacontine-1,5,11,28,29(4 H,6 H,31 H)-pentone. It has the following structural formula: Sirolimus is white to off-white powder and is insoluble in water, but freely soluble in chloroform, acetone and acetonitrile. Sirolimus has molecular formula of 51H 79NO 13 and molecular weight of 914.19. Chemical Structure.

DOSAGE & ADMINISTRATION SECTION.


2 DOSAGE AND ADMINISTRATION. Complete all age-appropriate vaccinations as recommended by current immunization guidelines prior to HYFTOR initiation [see Warning and Precautions (5.6)] Apply HYFTOR to the skin of the face affected with angiofibroma twice daily in the morning and at bedtime.The maximum recommended daily dosage is: 600 mg (2 cm) for pediatric patients to 11 years of age800 mg (2.5 cm) for adults and pediatric patients 12 years of age and older If symptoms do not improve within 12 weeks of treatment, reevaluate the need for continuing HYFTOR.Do not use HYFTOR with occlusive dressings.For topical use only. Not for oral, ophthalmic, or intravaginal use.. Complete all age-appropriate vaccinations as recommended by current immunization guidelines prior to HYFTOR initiation [see Warning and Precautions (5.6)] . Apply HYFTOR to the skin of the face affected with angiofibroma twice daily in the morning and at bedtime.. The maximum recommended daily dosage is: 600 mg (2 cm) for pediatric patients to 11 years of age800 mg (2.5 cm) for adults and pediatric patients 12 years of age and older 600 mg (2 cm) for pediatric patients to 11 years of age. 800 mg (2.5 cm) for adults and pediatric patients 12 years of age and older. If symptoms do not improve within 12 weeks of treatment, reevaluate the need for continuing HYFTOR.. Do not use HYFTOR with occlusive dressings.. For topical use only. Not for oral, ophthalmic, or intravaginal use.. Complete all age-appropriate vaccinations as recommended by current immunization guidelines prior to HYFTOR initiation. 2) Apply to the skin of the face affected with angiofibroma twice daily. 2) The maximum daily dosage is: 600 mg (2 cm) for patients to 11 years of age. 2) 800 mg (2.5 cm) for patients 12 years of age and older. 2) Do not use with occlusive dressings. 2) For topical use only. Not for oral, ophthalmic, or intravaginal use. 2) Complete all age-appropriate vaccinations as recommended by current immunization guidelines prior to HYFTOR initiation. 2) Apply to the skin of the face affected with angiofibroma twice daily. 2) The maximum daily dosage is: 600 mg (2 cm) for patients to 11 years of age. 2) 800 mg (2.5 cm) for patients 12 years of age and older. 2) 600 mg (2 cm) for patients to 11 years of age. 2) 800 mg (2.5 cm) for patients 12 years of age and older. 2) Do not use with occlusive dressings. 2) For topical use only. Not for oral, ophthalmic, or intravaginal use. 2).

ADVERSE REACTIONS SECTION.


6 ADVERSE REACTIONS. Most common adverse reactions (>=1%) are dry skin, application site irritation, pruritus, acne, acneiform dermatitis, ocular hyperemia, skin hemorrhage, and skin irritation. 6) To report SUSPECTED ADVERSE REACTIONS, contact Nobelpharma America, LLC at (877) 375-0825 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.. 6.1Clinical Trials Experience. Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. In randomized, double-blind, vehicle-controlled trial, subjects aged years and older with facial angiofibroma associated with tuberous sclerosis applied HYFTOR twice daily for 12 weeks. total of 30 subjects were treated with HYFTOR and 32 with the vehicle. The majority of the subjects were female (54.8%). total of 40.3% were less than 18 years of age.The most common adverse reactions reported by >=1% of subjects treated with HYFTOR and more frequently than in subjects treated with vehicle are presented in Table 1. Adverse reactions occurred with similar frequency in pediatric subjects years of age and older.Table 1: Adverse Reactions in >=1% of Subjects Aged Years and Older with Facial Angiofibroma Associated with Tuberous Sclerosis Through Week 12Preferred TermHYFTOR = 30 Vehicle = 32 Dry skin Dry skin includes dry skin and asteatosis 12 (40%)4 (13%)Application site irritation11 (37%)9 (28%)Pruritus5 (17%)4 (13%)Acne2 (7%)0 (0%)Acneiform dermatitis1 (3%)0 (0%)Ocular hyperemia1 (3%)0 (0%)Skin hemorrhage1 (3%)0 (0%)Skin irritation1 (3%)0 (0%)In 104-week, open-label safety trial, the most common adverse reactions associated with HYFTOR application were application site irritation (31%), dry skin (28%), acne (20%), pruritus (9%), eye irritation (9%), erythema (7%), acneiform dermatitis (6%), contact dermatitis (5%), solar dermatitis (1%), and photosensitivity reaction (1%). Adverse reactions occurred with similar frequency in adult and pediatric subjects years of age and older.

DOSAGE FORMS & STRENGTHS SECTION.


3 DOSAGE FORMS AND STRENGTHS. Topical gel 0.2%: Each gram contains mg of sirolimus in colorless and transparent gel in 10-gram tubes. Topical gel, 0.2%: mg of sirolimus per gram. 3).

CARCINOGENESIS & MUTAGENESIS & IMPAIRMENT OF FERTILITY SECTION.


13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility. Oral carcinogenicity studies were conducted in mice and rats. In an oral carcinogenicity study conducted in female mice, sirolimus administered once daily for 86 weeks was associated with statistically significant increase in malignant lymphoma at all dose levels compared with control animals. In second oral mouse carcinogenicity study, sirolimus-related hepatocellular adenoma and carcinoma were induced in male mice. In an oral carcinogenicity study conducted in rats with sirolimus there were no significant findings.Sirolimus was not genotoxic in the in vitro bacterial reverse mutation assay, the Chinese hamster ovary cell chromosomal aberration assay, the mouse lymphoma cell forward mutation assay, or the in vivo mouse micronucleus assay.Fertility was decreased in both male and female rats following oral administration of sirolimus 2.0 and 0.5 mg/kg, respectively. In male rats, atrophy of testes, epididymides, prostate, seminiferous tubules and/or reduced sperm counts were observed. In female rats, decreased ovarian and uterine weights and decreased implantation were observed. Testicular tubular degeneration was also seen in 4-week intravenous study of sirolimus in monkeys at 0.1 mg/kg.

CLINICAL PHARMACOLOGY SECTION.


12 CLINICAL PHARMACOLOGY. 12.1 Mechanism of Action. The mechanism of action of sirolimus in the treatment of angiofibroma associated with tuberous sclerosis is unknown. Tuberous sclerosis is associated with genetic defects in TSC1 and TSC2 which leads to the constitutive activation of mammalian target of rapamycin (mTOR). Sirolimus inhibits mTOR activation.. 12.3 Pharmacokinetics. AbsorptionFollowing 12 weeks of treatment with HYFTOR in adult and pediatric subjects aged years and older, sirolimus blood concentrations ranged from undetectable to 0.50 ng/mL after multiple doses of HYFTOR in the Phase trial. Periodic blood samples were obtained in the 52-week trial and the maximum sirolimus concentration measured at any time in adult subjects was 3.27 ng/mL and the maximum sirolimus concentration measured at any time in pediatric subjects was 1.80 ng/mL.. DistributionThere was no evidence based on blood concentrations that sirolimus accumulates systemically upon topical application in patients with tuberous sclerosis for periods of up to year.. Elimination. MetabolismStudies evaluating the metabolism of HYFTOR have not been conducted.Sirolimus is substrate for both CYP3A4 and P-gp. Sirolimus is extensively metabolized after oral administration in the intestinal wall and liver and undergoes counter-transport from enterocytes of the small intestine into the gut lumen. Inhibitors of CYP3A4 and P-gp increase sirolimus concentrations. Inducers of CYP3A4 and P-gp decrease sirolimus concentrations. Sirolimus is extensively metabolized by O-demethylation and/or hydroxylation. Seven (7) major metabolites, including hydroxy, demethyl, and hydroxydemethyl, are identifiable in whole blood. Some of these metabolites are also detectable in plasma, fecal, and urine samples. Sirolimus is the major component in human whole blood and contributes to more than 90% of the immunosuppressive activity.. ExcretionStudies evaluating the excretion of HYFTOR have not been conducted.After single dose of 14C] sirolimus oral solution in healthy volunteers, the majority (91%) of radioactivity was recovered from the feces, and only minor amount (2.2%) was excreted in urine. The mean +- SD terminal elimination half-life (t 1/2 of sirolimus after multiple dosing in stable renal transplant patients was estimated to be about 62 +- 16 hours. Drug Interaction StudiesDrug interaction studies with HYFTOR have not been conducted. Sirolimus is known to be substrate for both cytochrome P-450 3A4 (CYP3A4) and p-glycoprotein (P-gp). [see Drug Interactions (7.1, 7.2)].

CLINICAL STUDIES SECTION.


14 CLINICAL STUDIES. single, randomized, double-blind, vehicle-controlled, multi-center, Phase trial was conducted in Japan to evaluate HYFTOR for the treatment of adults and pediatric patients years of age and older with facial angiofibroma associated with tuberous sclerosis (NCT02635789). total of 62 Japanese subjects with or more angiofibromas (>=2 mm in diameter with redness in each) on the face were enrolled in this trial. Overall, 28 subjects (45%) were male and 34 (55%) were female. total of 25 subjects (40%) were between and <18 years of age. In this trial, subjects applied either HYFTOR or vehicle twice daily to the skin of their face affected with angiofibroma for 12 weeks.The efficacy was assessed by the investigator (live assessment) based on the composite improvement from baseline in size and redness of facial angiofibroma, using subjects baseline photographs as reference. The proportion of subjects assessed as Improved or Markedly Improved at Week 12 is presented in Table 3. An assessment of Improved was defined as at least 50% reduction in the size and 2-level reduction in redness and an assessment of Markedly Improved was defined as at least 75% reduction in the size and 3-level reduction in redness.Table 3: Improvement in Facial Angiofibroma Associated with Tuberous Sclerosis in Patients Aged Years and Older at Week 12Proportion of Subjects Assessed by the Investigator as:HYFTOR N=30 Vehicle N=32 Improved or Markedly Improved23%6%Improved13%3%Markedly Improved10%3%.

CLINICAL TRIALS EXPERIENCE SECTION.


6.1Clinical Trials Experience. Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. In randomized, double-blind, vehicle-controlled trial, subjects aged years and older with facial angiofibroma associated with tuberous sclerosis applied HYFTOR twice daily for 12 weeks. total of 30 subjects were treated with HYFTOR and 32 with the vehicle. The majority of the subjects were female (54.8%). total of 40.3% were less than 18 years of age.The most common adverse reactions reported by >=1% of subjects treated with HYFTOR and more frequently than in subjects treated with vehicle are presented in Table 1. Adverse reactions occurred with similar frequency in pediatric subjects years of age and older.Table 1: Adverse Reactions in >=1% of Subjects Aged Years and Older with Facial Angiofibroma Associated with Tuberous Sclerosis Through Week 12Preferred TermHYFTOR = 30 Vehicle = 32 Dry skin Dry skin includes dry skin and asteatosis 12 (40%)4 (13%)Application site irritation11 (37%)9 (28%)Pruritus5 (17%)4 (13%)Acne2 (7%)0 (0%)Acneiform dermatitis1 (3%)0 (0%)Ocular hyperemia1 (3%)0 (0%)Skin hemorrhage1 (3%)0 (0%)Skin irritation1 (3%)0 (0%)In 104-week, open-label safety trial, the most common adverse reactions associated with HYFTOR application were application site irritation (31%), dry skin (28%), acne (20%), pruritus (9%), eye irritation (9%), erythema (7%), acneiform dermatitis (6%), contact dermatitis (5%), solar dermatitis (1%), and photosensitivity reaction (1%). Adverse reactions occurred with similar frequency in adult and pediatric subjects years of age and older.

CONTRAINDICATIONS SECTION.


4 CONTRAINDICATIONS. HYFTOR is contraindicated in patients with history of hypersensitivity to sirolimus or any other component of HYFTOR. Reactions to sirolimus have included anaphylactic/anaphylactoid reactions, angioedema, exfoliative dermatitis, and hypersensitivity vasculitis [see Warning and Precautions (5.1)] . History of hypersensitivity to sirolimus or any other component of HYFTOR. 4).

PACKAGE LABEL.PRINCIPAL DISPLAY PANEL.


PRINCIPAL DISPLAY PANEL 10 Tube Carton. NDC 73683-101-10HYFTOR(TM) (sirolimus topical gel) 0.2% Nobel pharmaFor topical use only Keep refrigerated 10 tube Rx OnlyDispense enclosed Patient Information to patient. PRINCIPAL DISPLAY PANEL 10 Tube Carton.

DRUG INTERACTIONS SECTION.


7 DRUG INTERACTIONS. CYP3A4 Inhibitors: During concomitant use of HYFTOR with CYP3A4 inhibitors, monitor for adverse reactions of HYFTOR. 7.1) Substrates and Inhibitors of CYP3A: During concomitant use of HYFTOR with drugs that are both substrates and inhibitors of CYP3A, monitor for adverse reactions of the CYP3A substrate and inhibitor. 7.2) CYP3A4 Inhibitors: During concomitant use of HYFTOR with CYP3A4 inhibitors, monitor for adverse reactions of HYFTOR. 7.1) Substrates and Inhibitors of CYP3A: During concomitant use of HYFTOR with drugs that are both substrates and inhibitors of CYP3A, monitor for adverse reactions of the CYP3A substrate and inhibitor. 7.2) 7.1Effects of Other Drugs on HYFTOR Table presents clinically significant drug interactions involving drugs that affect HYFTOR.Table 2: Effects of CYP3A4 Inhibitors on HYFTORClinical ImpactConcomitant use of HYFTOR with inhibitors of CYP3A4 has the potential to increase the systemic exposure of sirolimus and increase the risk of HYFTOR adverse reactions.InterventionMonitor for adverse reactions of HYFTOR.. 7.2Effects of HYFTOR on Other Drugs. Systemic exposure of drugs that are both substrates and inhibitors of CYP3A could be increased with coadministration with HYFTOR. Monitor for adverse reactions of such co-administered drugs.

FEMALES & MALES OF REPRODUCTIVE POTENTIAL SECTION.


8.3 Females and Males of Reproductive Potential. ContraceptionBased on animal studies with oral sirolimus, HYFTOR may cause fetal harm when administered to pregnant women. Females of reproductive potential are recommended to avoid becoming pregnant and to use an effective contraceptive method. Effective contraception should be initiated before HYFTOR therapy and used throughout treatment and for 12 weeks after the final dose of HYFTOR [see Warnings and Precautions (5.7), Use in Specific Populations (8.1)] . InfertilityBased on clinical findings and findings in animal studies, male and female fertility may be compromised by the treatment with sirolimus [see Warnings and Precautions (5.8), Nonclinical Toxicology (13.1)]. Ovarian cysts and menstrual disorders (including amenorrhea and menorrhagia) have been reported in females with the use of oral sirolimus. Azoospermia has been reported in males with the use of oral sirolimus and have been reversible upon discontinuation of sirolimus in most cases.

GERIATRIC USE SECTION.


8.5 Geriatric Use. Clinical studies of HYFTOR did not include sufficient numbers of subjects aged 65 years and over to determine whether they respond differently from younger subjects. Other reported clinical experience has not identified differences in responses between the elderly and younger patients.

HOW SUPPLIED SECTION.


16 HOW SUPPLIED/STORAGE AND HANDLING. How SuppliedHYFTOR(TM) (sirolimus topical gel) 0.2% is colorless and transparent gel supplied as 10 in aluminum tubes (NDC 73683-101-10). Each gram contains mg of sirolimus.. Storage and HandlingStore refrigerated at to 8C (36 to 46F). Protect from light.

INDICATIONS & USAGE SECTION.


1 INDICATIONS AND USAGE. HYFTOR is indicated for the treatment of facial angiofibroma associated with tuberous sclerosis in adults and pediatric patients years of age and older.. HYFTOR is an mTOR inhibitor immunosuppressant indicated for the treatment of facial angiofibroma associated with tuberous sclerosis in adults and pediatric patients years of age and older. 1).

INFORMATION FOR PATIENTS SECTION.


17 PATIENT COUNSELING INFORMATION. Advise the patient to read the FDA-approved patient labeling (Patient Information).. HypersensitivityInform patients that oral sirolimus has been associated with hypersensitivity reactions, including anaphylactic/anaphylactoid reactions, angioedema, exfoliative dermatitis, and hypersensitivity vasculitis. Advise patients to discontinue HYFTOR immediately and seek medical attention if symptoms occur [see Warnings and Precautions (5.1)] . Serious InfectionsInform patients that oral sirolimus has been associated with increased susceptibility to infections, including opportunistic infections and latent viral infections, such as progressive multifocal leukoencephalopathy (PML). Advise patients to discontinue HYFTOR immediately and seek medical attention if symptoms occur [see Warnings and Precautions (5.2)] . MalignancyInform patients that oral sirolimus has been associated with malignancy, including lymphoma and skin cancer. Advise patients to minimize or avoid exposure to natural or artificial sunlight (tanning beds or UVA/B treatment), and to use protective measures if exposure cannot be avoided, while using HYFTOR [see Warnings and Precautions (5.3)] . HyperlipidemiaInform patients that oral sirolimus has been associated with increased serum cholesterol and triglycerides requiring treatment and that periodic laboratory monitoring may be needed [see Warnings and Precautions (5.4)] . Interstitial Lung DiseaseInform patients that oral sirolimus has been associated with interstitial lung disease [ILD] sometimes fatal, with no identified infectious etiology. Advise patients to discontinue HYFTOR immediately and seek medical attention if symptoms (e.g. shortness of breath) occur [see Warnings and Precautions (5.5)] . ImmunizationInform patients that during treatment with HYFTOR, vaccinations may be less effective. Instruct patients that vaccination with live vaccines should be avoided during treatment with HYFTOR and to inform the healthcare practitioner that they are using HYFTOR prior to potential vaccination [see Warnings and Precautions (5.6)] . PregnancyHYFTOR may cause fetal harm if used during pregnancy. Advise female patients of reproductive potential to avoid becoming pregnant and to use effective contraception prior to, throughout treatment, and for 12 weeks after the final dose of HYFTOR. Advise pregnant women of the potential risk to fetus [see Warnings and Precautions (5.7), Use in Specific Populations (8.1, 8.3)]. LactationAdvise lactating women that breastfeeding is not recommended during treatment with HYFTOR [see Use in Specific Populations (8.2)]. InfertilityInform male and female patients that HYFTOR may impair fertility [see Warnings and Precautions (5.8), Use in Specific Populations (8.3), Nonclinical Toxicology (13.1)]. Administration InformationInform patients that the skin being treated with HYFTOR should not be covered with bandages, dressings or wraps [see Dosage and Administration (2)].

LACTATION SECTION.


8.2 Lactation. Risk SummaryThere are no available data on the presence of sirolimus in human milk, the effects on the breastfed infant, or the effects on milk production. After oral administration, sirolimus was present in the milk of lactating rats. Because of the potential for serious adverse reactions in the breastfed infant, breastfeeding is not recommended during treatment with HYFTOR.

MECHANISM OF ACTION SECTION.


12.1 Mechanism of Action. The mechanism of action of sirolimus in the treatment of angiofibroma associated with tuberous sclerosis is unknown. Tuberous sclerosis is associated with genetic defects in TSC1 and TSC2 which leads to the constitutive activation of mammalian target of rapamycin (mTOR). Sirolimus inhibits mTOR activation.

NONCLINICAL TOXICOLOGY SECTION.


13 NONCLINICAL TOXICOLOGY. 13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility. Oral carcinogenicity studies were conducted in mice and rats. In an oral carcinogenicity study conducted in female mice, sirolimus administered once daily for 86 weeks was associated with statistically significant increase in malignant lymphoma at all dose levels compared with control animals. In second oral mouse carcinogenicity study, sirolimus-related hepatocellular adenoma and carcinoma were induced in male mice. In an oral carcinogenicity study conducted in rats with sirolimus there were no significant findings.Sirolimus was not genotoxic in the in vitro bacterial reverse mutation assay, the Chinese hamster ovary cell chromosomal aberration assay, the mouse lymphoma cell forward mutation assay, or the in vivo mouse micronucleus assay.Fertility was decreased in both male and female rats following oral administration of sirolimus 2.0 and 0.5 mg/kg, respectively. In male rats, atrophy of testes, epididymides, prostate, seminiferous tubules and/or reduced sperm counts were observed. In female rats, decreased ovarian and uterine weights and decreased implantation were observed. Testicular tubular degeneration was also seen in 4-week intravenous study of sirolimus in monkeys at 0.1 mg/kg.

PEDIATRIC USE SECTION.


8.4 Pediatric Use. The safety and effectiveness of HYFTOR have been established in pediatric patients aged years and older for the topical treatment of facial angiofibroma associated with tuberous sclerosis. Use of HYFTOR in this age group is supported by data from randomized, vehicle-controlled, double-blind 12-week trial along with additional efficacy and long-term safety data from 104-week open label safety trial. total of 13 pediatric subjects aged years to 17 years received HYFTOR in the Phase clinical trial along with 48 pediatric subjects aged years to 17 years in the 104-week open label safety trial. Adverse reactions occurred with similar frequency in adult and pediatric subjects [see Adverse Reaction (6.1), Clinical Studies (14)]. The safety and effectiveness of HYFTOR for this indication have not been established in pediatric patients less than years of age.

PHARMACOKINETICS SECTION.


12.3 Pharmacokinetics. AbsorptionFollowing 12 weeks of treatment with HYFTOR in adult and pediatric subjects aged years and older, sirolimus blood concentrations ranged from undetectable to 0.50 ng/mL after multiple doses of HYFTOR in the Phase trial. Periodic blood samples were obtained in the 52-week trial and the maximum sirolimus concentration measured at any time in adult subjects was 3.27 ng/mL and the maximum sirolimus concentration measured at any time in pediatric subjects was 1.80 ng/mL.. DistributionThere was no evidence based on blood concentrations that sirolimus accumulates systemically upon topical application in patients with tuberous sclerosis for periods of up to year.. Elimination. MetabolismStudies evaluating the metabolism of HYFTOR have not been conducted.Sirolimus is substrate for both CYP3A4 and P-gp. Sirolimus is extensively metabolized after oral administration in the intestinal wall and liver and undergoes counter-transport from enterocytes of the small intestine into the gut lumen. Inhibitors of CYP3A4 and P-gp increase sirolimus concentrations. Inducers of CYP3A4 and P-gp decrease sirolimus concentrations. Sirolimus is extensively metabolized by O-demethylation and/or hydroxylation. Seven (7) major metabolites, including hydroxy, demethyl, and hydroxydemethyl, are identifiable in whole blood. Some of these metabolites are also detectable in plasma, fecal, and urine samples. Sirolimus is the major component in human whole blood and contributes to more than 90% of the immunosuppressive activity.. ExcretionStudies evaluating the excretion of HYFTOR have not been conducted.After single dose of 14C] sirolimus oral solution in healthy volunteers, the majority (91%) of radioactivity was recovered from the feces, and only minor amount (2.2%) was excreted in urine. The mean +- SD terminal elimination half-life (t 1/2 of sirolimus after multiple dosing in stable renal transplant patients was estimated to be about 62 +- 16 hours. Drug Interaction StudiesDrug interaction studies with HYFTOR have not been conducted. Sirolimus is known to be substrate for both cytochrome P-450 3A4 (CYP3A4) and p-glycoprotein (P-gp). [see Drug Interactions (7.1, 7.2)].

PREGNANCY SECTION.


8.1 Pregnancy. Risk SummaryBased on animal studies and mechanism of action, oral sirolimus can cause fetal harm when administered to pregnant woman. HYFTOR is systemically absorbed after topical administration and may result in fetal exposure. The available data from case reports on HYFTOR use in pregnant women are insufficient to evaluate for drug-associated risk of major birth defects, miscarriage, or adverse maternal or fetal outcomes. Animal reproduction studies have not been conducted with HYFTOR. In an animal reproduction study, oral administration of 0.5 mg/kg/day sirolimus caused embryo-fetal lethality in pregnant rats when administered during the period of organogenesis (see Data). The available data do not allow the calculation of relevant comparisons between the systemic exposure of sirolimus observed in animal studies to the systemic exposure that would be expected in humans after topical use of HYFTOR. The background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is to 4% and 15 to 20%, respectively.. Data. Animal DataIn embryo-fetal development studies in rats, oral administration of sirolimus to pregnant rats during the period of organogenesis (gestation days -15) induced embryo-fetal lethality at 0.5 mg/kg/day, reduced fetal body weight at 1.0 mg/kg/day and caused maternal toxicity at 2.0 mg/kg/day. No treatment related embryo-fetal developmental effects were observed at 0.1 mg/kg/day.In embryo-fetal development studies in rabbits, oral administration of sirolimus to pregnant rabbits during the period of organogenesis (gestation days -18) induced maternal toxicity (decreased body weight) at 0.05 mg/kg/day, which was associated with embryo-fetal loss or early resorption. No treatment related developmental effects were observed at 0.025 mg/kg/day.In pre- and postnatal development toxicity study, oral administration of sirolimus to pregnant rats during gestation and lactation (gestation day through lactation day 20) increased the incidence of dead pups, resulting in reduced live litter size at 0.5 mg/kg/day. No treatment related developmental effects were observed at 0.1 mg/kg/day.Sirolimus did not cause maternal toxicity or affect developmental parameters in the surviving offspring (morphological development, motor activity, learning, or fertility assessment) at 0.5 mg/kg/day, the highest dose tested.

SPL PATIENT PACKAGE INSERT SECTION.


This Patient Information has been approved by the U.S. Food and Drug Administration.Issued: 2/2022PATIENT INFORMATION HYFTOR(TM) (hyfe tore) (sirolimus topical gel) Important: HYFTOR is for use on the skin only (topical use). Do not use HYFTOR in your mouth, eyes, or vagina. What is HYFTORHYFTOR is prescription medicine that is used on the skin (topical) to treat adults and children years of age and older with type of noncancerous tumor called angiofibroma on your face caused by the genetic condition tuberous sclerosis. It is not known if HYFTOR is safe and effective in children under years of age. Do not use HYFTOR if you are allergic to sirolimus or any of the other ingredients in HYFTOR. See the end of this leaflet for complete list of ingredients in HYFTOR. Before using HYFTOR, tell your healthcare provider about all of your medical conditions, including if you:have skin infection at the treatment sitehave high cholesterol or high triglycerides (fat or lipids) in your bloodare scheduled to receive an immunization (vaccine). You should avoid receiving live vaccines during treatment with HYFTOR. Vaccines may be less effective during treatment with HYFTOR.are pregnant or plan to become pregnant. HYFTOR may harm your unborn baby. You should not become pregnant during treatment with HYFTOR. Females who are able to become pregnant should use effective birth control (contraception) before starting treatment with HYFTOR, during treatment, and for 12 weeks after your final dose of HYFTOR. Talk to your healthcare provider about types of birth control that you can use during this time. are breastfeeding or plan to breastfeed. It is not known if HYFTOR passes into your breast milk. You should not breastfeed during treatment with HYFTOR.Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. Using HYFTOR with certain medicines may affect each other causing side effects. How should use HYFTORUse HYFTOR exactly as your healthcare provider tells you to use it.Before you use HYFTOR, your healthcare provider or pharmacist should show you how to correctly measure your dose.Wash your hands before and after applying HYFTOR.Apply HYFTOR to the skin of the face affected with angiofibroma times day, in the morning and at bedtime.Do not cover, wrap, apply dressings, or bandage the skin area treated with HYFTOR. Tell your healthcare provider if the treated skin area does not improve within 12 weeks of treatment.What should avoid while using HYFTORLimit your exposure to sunlight and ultraviolet light, such as tanning beds and ultraviolet light therapy, during treatment with HYFTOR. Wear clothing that covers your skin if you need to go outside. Talk with your healthcare provider about other ways you can protect your skin from the sun. What are the possible side effects of HYFTOR HYFTOR may cause serious side effects, including: Allergic reactions. Serious allergic reactions have happened in people who have taken sirolimus by mouth. Stop using HYFTOR and get medical help right away if you get any of these symptoms of serious allergic reaction: swelling of your face, eyes, or mouthtrouble breathing or wheezingthroat tightnesschest pain or tightnessfeeling dizzy or faintrash or peeling of your skinInfections. Serious infections, including infections that can happen when your immune system is weak, have happened in people who have taken sirolimus by mouth. Some people have developed rare, serious brain infection called progressive multifocal leukoencephalopathy (PML) which can sometimes cause death. Stop using HYFTOR and call your healthcare provider right away if you get symptoms of an infection including fever or chills. Risk of cancer. Lymphoma and other cancers, especially skin cancer, have happened in people who have taken sirolimus by mouth. Talk with your healthcare provider about your risk for cancer if you use HYFTOR. Increased levels of cholesterol and triglycerides (fat or lipids) in the blood have happened in people who have taken sirolimus by mouth Your healthcare provider may do blood tests to check you for high lipid levels during treatment with HYFTOR and treat you, if needed. Lung or breathing problems. Lung or breathing problems, including problems that have sometimes caused death, have happened in people who have taken sirolimus by mouth. Stop using HYFTOR and get medical help right away if you get symptoms such as shortness of breath, new or worsening cough, or chest pain. The most common side effects of HYFTOR include dry skin, application site irritation, itching, acne, acne-like rash, eye redness, skin bleeding, and skin irritation. HYFTOR may cause fertility problems in males and females, which may affect your ability to have children. Talk to your healthcare provider if this is concern for you. These are not all the possible side effects of HYFTOR. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. How should store HYFTOR Store HYFTOR in the refrigerator between at 36F to 46F (2C to 8C).Keep HYFTOR out of light.Keep HYFTOR and all medicines out of the reach of children.General information about the safe and effective use of HYFTOR. Medicines are sometimes prescribed for purposes other than those listed in Patient Information leaflet. Do not use HYFTOR for condition for which it was not prescribed. Do not give HYFTOR to other people, even if they have the same symptoms you have. It may harm them. You can ask your pharmacist or healthcare provider for information about HYFTOR that is written for health professionals. What are the ingredients in HYFTOR Active ingredient: sirolimus Inactive ingredients: alcohol 51%, Carbomer 940, purified water, and trolamine. Distributed by: Nobelpharma America, LLC 4520 East-West Highway, Suite 400, Bethesda, MD 20814 For more information, go to www.Hyftor.com or call 887-375-0825. have skin infection at the treatment site. have high cholesterol or high triglycerides (fat or lipids) in your blood. are scheduled to receive an immunization (vaccine). You should avoid receiving live vaccines during treatment with HYFTOR. Vaccines may be less effective during treatment with HYFTOR.. are pregnant or plan to become pregnant. HYFTOR may harm your unborn baby. You should not become pregnant during treatment with HYFTOR. Females who are able to become pregnant should use effective birth control (contraception) before starting treatment with HYFTOR, during treatment, and for 12 weeks after your final dose of HYFTOR. Talk to your healthcare provider about types of birth control that you can use during this time. Females who are able to become pregnant should use effective birth control (contraception) before starting treatment with HYFTOR, during treatment, and for 12 weeks after your final dose of HYFTOR. Talk to your healthcare provider about types of birth control that you can use during this time.. are breastfeeding or plan to breastfeed. It is not known if HYFTOR passes into your breast milk. You should not breastfeed during treatment with HYFTOR.. Use HYFTOR exactly as your healthcare provider tells you to use it.. Before you use HYFTOR, your healthcare provider or pharmacist should show you how to correctly measure your dose.. Wash your hands before and after applying HYFTOR.. Apply HYFTOR to the skin of the face affected with angiofibroma times day, in the morning and at bedtime.. Do not cover, wrap, apply dressings, or bandage the skin area treated with HYFTOR. Tell your healthcare provider if the treated skin area does not improve within 12 weeks of treatment.. Allergic reactions. Serious allergic reactions have happened in people who have taken sirolimus by mouth. Stop using HYFTOR and get medical help right away if you get any of these symptoms of serious allergic reaction: swelling of your face, eyes, or mouth. trouble breathing or wheezing. throat tightness. chest pain or tightness. feeling dizzy or faint. rash or peeling of your skin. Infections. Serious infections, including infections that can happen when your immune system is weak, have happened in people who have taken sirolimus by mouth. Some people have developed rare, serious brain infection called progressive multifocal leukoencephalopathy (PML) which can sometimes cause death. Stop using HYFTOR and call your healthcare provider right away if you get symptoms of an infection including fever or chills. Risk of cancer. Lymphoma and other cancers, especially skin cancer, have happened in people who have taken sirolimus by mouth. Talk with your healthcare provider about your risk for cancer if you use HYFTOR. Increased levels of cholesterol and triglycerides (fat or lipids) in the blood have happened in people who have taken sirolimus by mouth Your healthcare provider may do blood tests to check you for high lipid levels during treatment with HYFTOR and treat you, if needed. Lung or breathing problems. Lung or breathing problems, including problems that have sometimes caused death, have happened in people who have taken sirolimus by mouth. Stop using HYFTOR and get medical help right away if you get symptoms such as shortness of breath, new or worsening cough, or chest pain. Store HYFTOR in the refrigerator between at 36F to 46F (2C to 8C).. Keep HYFTOR out of light.

SPL UNCLASSIFIED SECTION.


5.1Hypersensitivity Reactions. Hypersensitivity reactions, including anaphylactic/anaphylactoid reactions, angioedema, exfoliative dermatitis, and hypersensitivity vasculitis have been associated with the oral administration of sirolimus. The concomitant use of HYFTOR with other drugs known to cause angioedema, such as angiotensin-converting enzyme (ACE) inhibitors, may increase the risk of developing angioedema. Elevated sirolimus levels (with or without concomitant ACE inhibitors) may also potentiate angioedema. Discontinue HYFTOR immediately if symptoms of hypersensitivity occur.

STORAGE AND HANDLING SECTION.


Storage and HandlingStore refrigerated at to 8C (36 to 46F). Protect from light.

USE IN SPECIFIC POPULATIONS SECTION.


8 USE IN SPECIFIC POPULATIONS. Lactation: Breastfeeding not recommended. 8.2) 8.1 Pregnancy. Risk SummaryBased on animal studies and mechanism of action, oral sirolimus can cause fetal harm when administered to pregnant woman. HYFTOR is systemically absorbed after topical administration and may result in fetal exposure. The available data from case reports on HYFTOR use in pregnant women are insufficient to evaluate for drug-associated risk of major birth defects, miscarriage, or adverse maternal or fetal outcomes. Animal reproduction studies have not been conducted with HYFTOR. In an animal reproduction study, oral administration of 0.5 mg/kg/day sirolimus caused embryo-fetal lethality in pregnant rats when administered during the period of organogenesis (see Data). The available data do not allow the calculation of relevant comparisons between the systemic exposure of sirolimus observed in animal studies to the systemic exposure that would be expected in humans after topical use of HYFTOR. The background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is to 4% and 15 to 20%, respectively.. Data. Animal DataIn embryo-fetal development studies in rats, oral administration of sirolimus to pregnant rats during the period of organogenesis (gestation days -15) induced embryo-fetal lethality at 0.5 mg/kg/day, reduced fetal body weight at 1.0 mg/kg/day and caused maternal toxicity at 2.0 mg/kg/day. No treatment related embryo-fetal developmental effects were observed at 0.1 mg/kg/day.In embryo-fetal development studies in rabbits, oral administration of sirolimus to pregnant rabbits during the period of organogenesis (gestation days -18) induced maternal toxicity (decreased body weight) at 0.05 mg/kg/day, which was associated with embryo-fetal loss or early resorption. No treatment related developmental effects were observed at 0.025 mg/kg/day.In pre- and postnatal development toxicity study, oral administration of sirolimus to pregnant rats during gestation and lactation (gestation day through lactation day 20) increased the incidence of dead pups, resulting in reduced live litter size at 0.5 mg/kg/day. No treatment related developmental effects were observed at 0.1 mg/kg/day.Sirolimus did not cause maternal toxicity or affect developmental parameters in the surviving offspring (morphological development, motor activity, learning, or fertility assessment) at 0.5 mg/kg/day, the highest dose tested.. 8.2 Lactation. Risk SummaryThere are no available data on the presence of sirolimus in human milk, the effects on the breastfed infant, or the effects on milk production. After oral administration, sirolimus was present in the milk of lactating rats. Because of the potential for serious adverse reactions in the breastfed infant, breastfeeding is not recommended during treatment with HYFTOR.. 8.3 Females and Males of Reproductive Potential. ContraceptionBased on animal studies with oral sirolimus, HYFTOR may cause fetal harm when administered to pregnant women. Females of reproductive potential are recommended to avoid becoming pregnant and to use an effective contraceptive method. Effective contraception should be initiated before HYFTOR therapy and used throughout treatment and for 12 weeks after the final dose of HYFTOR [see Warnings and Precautions (5.7), Use in Specific Populations (8.1)] . InfertilityBased on clinical findings and findings in animal studies, male and female fertility may be compromised by the treatment with sirolimus [see Warnings and Precautions (5.8), Nonclinical Toxicology (13.1)]. Ovarian cysts and menstrual disorders (including amenorrhea and menorrhagia) have been reported in females with the use of oral sirolimus. Azoospermia has been reported in males with the use of oral sirolimus and have been reversible upon discontinuation of sirolimus in most cases. 8.4 Pediatric Use. The safety and effectiveness of HYFTOR have been established in pediatric patients aged years and older for the topical treatment of facial angiofibroma associated with tuberous sclerosis. Use of HYFTOR in this age group is supported by data from randomized, vehicle-controlled, double-blind 12-week trial along with additional efficacy and long-term safety data from 104-week open label safety trial. total of 13 pediatric subjects aged years to 17 years received HYFTOR in the Phase clinical trial along with 48 pediatric subjects aged years to 17 years in the 104-week open label safety trial. Adverse reactions occurred with similar frequency in adult and pediatric subjects [see Adverse Reaction (6.1), Clinical Studies (14)]. The safety and effectiveness of HYFTOR for this indication have not been established in pediatric patients less than years of age.. 8.5 Geriatric Use. Clinical studies of HYFTOR did not include sufficient numbers of subjects aged 65 years and over to determine whether they respond differently from younger subjects. Other reported clinical experience has not identified differences in responses between the elderly and younger patients.

WARNINGS AND PRECAUTIONS SECTION.


5 WARNINGS AND PRECAUTIONS. Hypersensitivity Reactions: Oral sirolimus has been associated with hypersensitivity reactions, including anaphylactic/anaphylactoid reactions, angioedema, exfoliative dermatitis, and hypersensitivity vasculitis. Discontinue HYFTOR immediately if symptoms of hypersensitivity occur. 5.1) Serious Infection: Serious infections, including opportunistic infections and latent viral infections, such as progressive multifocal leukoencephalopathy, have been reported with oral sirolimus. Discontinue HYFTOR immediately if symptoms of infection occur. 5.2) Malignancy: Oral sirolimus has been associated with malignancy, including lymphoma and skin cancer. Patients should minimize or avoid exposure to natural or artificial sunlight (tanning beds or UVA/B treatment) while using HYFTOR. 5.3) Hyperlipidemia: Oral sirolimus has been associated with increased serum cholesterol and triglycerides requiring treatment. Monitor for hyperlipidemia during treatment. 5.4) Interstitial Lung Disease (ILD)/Non-infectious Pneumonitis: Oral sirolimus has been associated with ILD, sometimes fatal. Discontinue HYFTOR if ILD symptoms occur. 5.5) Immunizations: During treatment with HYFTOR, vaccinations may be less effective. Avoid use of live vaccines during treatment with HYFTOR. 5.6) Embryo-Fetal Toxicity: Based on animal studies, HYFTOR can cause fetal harm. Use of effective contraception is recommended for females of reproductive potential prior to and throughout treatment, and for 12 weeks after final dose of HYFTOR. 5.7, 8.1, 8.3) Male Infertility: Oral sirolimus has been associated with azoospermia and oligospermia. Advise males that HYFTOR may impair fertility. 5.8, 8.3, 13.1) Hypersensitivity Reactions: Oral sirolimus has been associated with hypersensitivity reactions, including anaphylactic/anaphylactoid reactions, angioedema, exfoliative dermatitis, and hypersensitivity vasculitis. Discontinue HYFTOR immediately if symptoms of hypersensitivity occur. 5.1) Serious Infection: Serious infections, including opportunistic infections and latent viral infections, such as progressive multifocal leukoencephalopathy, have been reported with oral sirolimus. Discontinue HYFTOR immediately if symptoms of infection occur. 5.2) Malignancy: Oral sirolimus has been associated with malignancy, including lymphoma and skin cancer. Patients should minimize or avoid exposure to natural or artificial sunlight (tanning beds or UVA/B treatment) while using HYFTOR. 5.3) Hyperlipidemia: Oral sirolimus has been associated with increased serum cholesterol and triglycerides requiring treatment. Monitor for hyperlipidemia during treatment. 5.4) Interstitial Lung Disease (ILD)/Non-infectious Pneumonitis: Oral sirolimus has been associated with ILD, sometimes fatal. Discontinue HYFTOR if ILD symptoms occur. 5.5) Immunizations: During treatment with HYFTOR, vaccinations may be less effective. Avoid use of live vaccines during treatment with HYFTOR. 5.6) Embryo-Fetal Toxicity: Based on animal studies, HYFTOR can cause fetal harm. Use of effective contraception is recommended for females of reproductive potential prior to and throughout treatment, and for 12 weeks after final dose of HYFTOR. 5.7, 8.1, 8.3) Male Infertility: Oral sirolimus has been associated with azoospermia and oligospermia. Advise males that HYFTOR may impair fertility. 5.8, 8.3, 13.1) 5.1Hypersensitivity Reactions. Hypersensitivity reactions, including anaphylactic/anaphylactoid reactions, angioedema, exfoliative dermatitis, and hypersensitivity vasculitis have been associated with the oral administration of sirolimus. The concomitant use of HYFTOR with other drugs known to cause angioedema, such as angiotensin-converting enzyme (ACE) inhibitors, may increase the risk of developing angioedema. Elevated sirolimus levels (with or without concomitant ACE inhibitors) may also potentiate angioedema. Discontinue HYFTOR immediately if symptoms of hypersensitivity occur.. 5.2Serious Infection. Serious infections, including opportunistic infections, have been reported after oral administration of sirolimus. Cases of progressive multifocal leukoencephalopathy (PML), sometimes fatal have been reported in patients treated with oral sirolimus. Discontinue HYFTOR immediately if symptoms of infection occur.. 5.3Malignancy. Lymphoma and other malignancies, particularly of the skin, have been observed after oral administration of sirolimus. Patients should minimize or avoid exposure to natural or artificial sunlight (tanning beds or UVA/B treatment) while using HYFTOR. If patients need to be outdoors while using HYFTOR, they should wear protective clothing and discuss other sun protection measures with their physician.. 5.4Hyperlipidemia. Increased serum cholesterol and triglycerides requiring treatment have been observed with oral administration of sirolimus. Monitor for hyperlipidemia during treatment with HYFTOR.. 5.5Interstitial Lung Disease/Non-Infectious Pneumonitis. Cases of interstitial lung disease [ILD] (including pneumonitis, bronchiolitis obliterans organizing pneumonia [BOOP], and pulmonary fibrosis), some fatal, with no identified infectious etiology have occurred in patients receiving oral sirolimus. In some cases, the ILD has resolved upon discontinuation or dosage reduction of oral sirolimus. Discontinue HYFTOR immediately if symptoms of ILD occur.. 5.6Immunizations. During treatment with HYFTOR, vaccinations may be less effective. Complete all age-appropriate vaccinations as recommended by current immunization guidelines prior to initiating treatment with HYFTOR. The use of live vaccines should be avoided during treatment with HYFTOR.. 5.7Embryo-Fetal Toxicity. Based on animal studies and the mechanism of action, oral sirolimus can cause fetal harm when administered to pregnant woman. In animal studies, oral sirolimus caused embryo-fetal toxicity when administered during the period of organogenesis at maternal exposures that were equal to or less than human exposures at the recommended lowest starting dose. HYFTOR is systemically absorbed after topical administration and may result in fetal exposure. Advise pregnant women of the potential risk to fetus. Advise female patients of reproductive potential to avoid becoming pregnant. They should use effective contraception prior to, throughout treatment and for 12 weeks after the final dose of HYFTOR [see Use in Specific Populations (8.1, 8.3), Clinical Pharmacology (12.1, 12.3)]. 5.8Male Infertility. Azoospermia or oligospermia has been observed after oral administration of sirolimus [see Use in Specific Populations (8.3), Nonclinical Toxicology (13.1)]. Sirolimus is an anti-proliferative drug and affects rapidly dividing cells like the germ cells. Advise males that HYFTOR may impair fertility.