If postdose symptomatic bradycardia occurs, initiate appropriate management, begin continuous ECG monitoring, and continue monitoring until the symptoms have resolved if no pharmacological treatment is required. If pharmacological treatment is required, continue monitoring overnight and repeat 6-hour monitoring after the second dose.
- in patients that require pharmacologic intervention for symptomatic bradycardia. In these patients, the first-dose monitoring strategy should be repeated after the second dose of TASCENSO ODT
- in patients with some preexisting heart and cerebrovascular conditions [see Warnings and Precautions (5.1)]
- in patients with a prolonged QTc interval before dosing or during 6-hour observation, or at additional risk for QT prolongation, or on concurrent therapy with QT prolonging drugs with a known risk of torsades de pointes [see Warnings and Precautions (5.1), Drug Interactions (7.1)]
- in patients receiving concurrent therapy with drugs that slow heart rate or AV conduction [see Drug Interactions (7.5)].
Reduction in Heart Rate
After the first dose of TASCENSO ODT, the heart rate decrease starts within an hour. On Day 1, the maximum decline in heart rate generally occurs within 6 hours and recovers, although not to baseline levels, by 8 to 10 hours postdose. Because of physiological diurnal variation, there is a second period of heart rate decrease within 24 hours after the first dose. In some patients, heart rate decrease during the second period is more pronounced than the decrease observed in the first 6 hours. Heart rates below 50 bpm in pediatric patients occurred rarely. In controlled clinical trials in adult patients, adverse reactions of symptomatic bradycardia following the first dose were reported in 0.6% of patients receiving fingolimod capsules and in 0.1% of patients on placebo. Patients who experienced bradycardia were generally asymptomatic, but some patients experienced hypotension, dizziness, fatigue, palpitations, and/or chest pain that usually resolved within the first 24 hours on treatment.
Patients with some preexisting conditions (e.g., ischemic heart disease, history of myocardial infarction, congestive heart failure, history of cardiac arrest, cerebrovascular disease, uncontrolled hypertension, history of symptomatic bradycardia, history of recurrent syncope, severe untreated sleep apnea, AV block, sinoatrial heart block) may poorly tolerate the TASCENSO ODT-induced bradycardia, or experience serious rhythm disturbances after the first dose of TASCENSO ODT. Prior to treatment with TASCENSO ODT, these patients should have a cardiac evaluation by a physician appropriately trained to conduct such evaluation, and if treated with TASCENSO ODT, should be monitored overnight with continuous ECG in a medical facility after the first dose.
Since initiation of TASCENSO ODT treatment results in decreased heart rate and may prolong the QT interval, patients with a prolonged QTc interval (> 450 msec pediatric males, or > 460 msec pediatric females) before dosing or during 6-hour observation, or at additional risk for QT prolongation (e.g., hypokalemia, hypomagnesemia, congenital long-QT syndrome), or on concurrent therapy with QT prolonging drugs with a known risk of torsades de pointes (e.g., citalopram, chlorpromazine, haloperidol, methadone, erythromycin) should be monitored overnight with continuous ECG in a medical facility.
Following the second fingolimod dose, a further decrease in heart rate may occur when compared to the heart rate prior to the second dose, but this change is of a smaller magnitude than that observed following the first dose. With continued fingolimod dosing, the heart rate returns to baseline within 1 month of chronic treatment. Clinical data indicate effects of TASCENSO ODT on heart rate are maximal after the first dose although milder effects on heart rate may persist for, on average, 2 to 4 weeks after initiation of therapy at which time heart rate generally returns to baseline. Physicians should continue to be alert to patient reports of cardiac symptoms.
Atrioventricular Blocks
Initiation of TASCENSO ODT treatment has resulted in transient AV conduction delays. In controlled clinical trials in adult patients, first-degree AV block after the first dose occurred in 4.7% of patients receiving fingolimod capsules and 1.6% of patients on placebo. In a study of 697 patients with available 24-hour Holter monitoring data after their first dose (N = 351 receiving fingolimod capsules and N = 346 on placebo), second-degree AV blocks (Mobitz Types I [Wenckebach] or 2:1 AV blocks) occurred in 4% (N = 14) of patients receiving fingolimod capsules and 2% (N = 7) of patients on placebo. Of the 14 patients receiving fingolimod capsules, 7 patients had 2:1 AV block (5 patients within the first 6 hours postdose and 2 patients after 6 hours postdose). All second-degree AV blocks on placebo were Mobitz Type I and occurred after the first 12 hours postdose. The conduction abnormalities were usually transient and asymptomatic, and resolved within the first 24 hours on treatment, but they occasionally required treatment with atropine or isoproterenol.
Postmarketing Experience
In the postmarketing setting, third-degree AV block and AV block with junctional escape have been observed during the first-dose 6-hour observation period with fingolimod. Isolated delayed onset events, including transient asystole and unexplained death, have occurred within 24 hours of the first dose. These events were confounded by concomitant medications and/or preexisting disease, and the relationship to fingolimod is uncertain. Cases of syncope were also reported after the first dose of fingolimod.
Risk of Infections
TASCENSO ODT causes a dose-dependent reduction in peripheral lymphocyte count to 20%-30% of baseline values because of reversible sequestration of lymphocytes in lymphoid tissues. TASCENSO ODT may therefore increase the risk of infections, some serious in nature [see Clinical Pharmacology (12.2)]. Life-threatening and fatal infections have occurred in association with fingolimod, the active moiety in TASCENSO ODT.
Before initiating treatment with TASCENSO ODT, results from a recent CBC (i.e., within 6 months or after discontinuation of prior therapy) should be reviewed. Initiation of treatment with TASCENSO ODT should be delayed in patients with severe active infection until resolution. Because residual pharmacodynamic effects, such as lowering effects on peripheral lymphocyte count, may persist for up to 2 months after discontinuation of TASCENSO ODT, vigilance for infection should be continued throughout this period [see Warnings and Precautions (5.13)].
In MS placebo-controlled trials in adult patients treated with fingolimod capsules, the overall rate of infections (72%) with fingolimod capsules was similar to placebo. However, bronchitis, herpes zoster, influenza, sinusitis, and pneumonia were more common in fingolimod-treated patients. Serious infections occurred at a rate of 2.3% in the fingolimod capsule group versus 1.6% in the placebo group.
In the postmarketing setting, serious infections with opportunistic pathogens including viruses (e.g., John Cunningham virus (JCV), herpes simplex viruses 1 and 2, varicella zoster virus), fungi (e.g., cryptococci), and bacteria (e.g., atypical mycobacteria) have been reported with fingolimod. Patients with symptoms and signs consistent with any of these infections should undergo prompt diagnostic evaluation and appropriate treatment.
Herpes Viral Infections
In placebo-controlled trials in adult patients treated with fingolimod capsules, the rate of herpetic infections was 9% in patients receiving fingolimod 0.5 mg and 7% on placebo.
Two patients died of herpetic infections during controlled trials. One death was due to disseminated primary herpes zoster and the other was to herpes simplex encephalitis. In both cases, the patients were taking a 1.25 mg dose of fingolimod (higher than the recommended 0.25 mg dose) and had received high-dose corticosteroid therapy to treat suspected MS relapses.
Serious, life-threatening events of disseminated varicella zoster and herpes simplex infections, including cases of encephalitis and multiorgan failure, have occurred with fingolimod in the postmarketing setting. Include disseminated herpetic infections in the differential diagnosis of patients who are receiving TASCENSO ODT and present with an atypical MS relapse or multiorgan failure.
Cases of Kaposi's sarcoma have been reported in patients treated with fingolimod in the postmarketing setting. Kaposi's sarcoma is an angioproliferative disorder that is associated with infection with human herpes virus 8 (HHV-8). Patients with symptoms or signs consistent with Kaposi's sarcoma should be referred for prompt diagnostic evaluation and management.
Cryptococcal Infections
Cryptococcal infections, including cases of fatal cryptococcal meningitis and disseminated cryptococcal infections, have been reported with fingolimod in the postmarketing setting. Cryptococcal infections have generally occurred after approximately 2 years of fingolimod treatment but may occur earlier. The relationship between the risk of cryptococcal infection and the duration of treatment is unknown. Patients with symptoms and signs consistent with a cryptococcal infection should undergo prompt diagnostic evaluation and treatment.
Prior and Concomitant Treatment with Antineoplastic, Immunosuppressive, or Immune-Modulating Therapies
In clinical studies, patients who received fingolimod capsules did not receive concomitant treatment with antineoplastic, non- corticosteroid immunosuppressive, or immune-modulating therapies used for treatment of MS. Concomitant use of TASCENSO ODT with any of these therapies, and also with corticosteroids, would be expected to increase the risk of immunosuppression [see Drug Interactions (7.4)].
When switching to fingolimod from immune-modulating or immunosuppressive medications, consider the duration of their effects and their mode of action to avoid unintended additive immunosuppressive effects.
Varicella Zoster Virus Antibody Testing/Vaccination
Patients without a healthcare professional confirmed history of chickenpox or without documentation of a full course of vaccination against VZV should be tested for antibodies to VZV before initiating TASCENSO ODT. VZV vaccination of antibody-negative patients is recommended prior to commencing treatment with TASCENSO ODT, following which initiation of treatment with TASCENSO ODT should be postponed for 1 month to allow the full effect of vaccination to occur [see Drug Interactions (7.3), Use in Specific Populations (8.4)].
Human Papilloma Virus (HPV) Infection
Human papilloma virus (HPV) infections, including papilloma, dysplasia, warts, and HPV-related cancer, have been reported in patients treated with fingolimod in the postmarketing setting. Vaccination against HPV should be considered prior to treatment initiation with TASCENSO ODT, taking into account vaccination recommendations. Cancer screening, including Papanicolaou (Pap) test, is recommended as per standard of care for patients using an immunosuppressive therapy.
Macular Edema in Patients with History of Uveitis or Diabetes Mellitus
Patients with a history of uveitis and patients with diabetes mellitus are at increased risk of macular edema during TASCENSO ODT therapy. The incidence of macular edema is also increased in MS patients with a history of uveitis. In the combined clinical trial experience in adult patients with fingolimod capsules, the rate of macular edema was approximately 20% in MS patients with a history of uveitis versus 0.6% in those without a history of uveitis. Fingolimod, the active moiety in TASCENSO ODT, has not been tested in MS patients with diabetes mellitus. In addition to the examination of the fundus including the macula prior to treatment and at 3 to 4 months after starting treatment, MS patients with diabetes mellitus or a history of uveitis should have regular follow-up examinations.
Cutaneous Malignancies
The risk of basal cell carcinoma (BCC) and melanoma is increased in patients treated with fingolimod, the active moiety in TASCENSO ODT. In two-year placebo-controlled trials in adult patients, the incidence of BCC was 2% in patients on fingolimod 0.5 mg capsules and 1% in patients on placebo [see Adverse Reactions (6.1)]. Melanoma, squamous cell carcinoma and Merkel cell carcinoma have been reported with fingolimod in the postmarketing setting. Periodic skin examination is recommended for all patients, particularly those with risk factors for skin cancer. Providers and patients are advised to monitor for suspicious skin lesions. If a suspicious skin lesion is observed, it should be promptly evaluated. As usual for patients with increased risk for skin cancer, exposure to sunlight and ultraviolet light should be limited by wearing protective clothing and using a sunscreen with a high protection factor.
Lymphoma
Cases of lymphoma, including both T-cell and B-cell types and CNS lymphoma, have occurred in patients receiving fingolimod, the active moiety in TASCENSO ODT. The reporting rate of non-Hodgkin lymphoma with fingolimod is greater than that expected in the general population adjusted by age, gender, and region. Cutaneous T-cell lymphoma (including mycosis fungoides) has also been reported with fingolimod in the postmarketing setting.
Adults
TASCENSO ODT is not approved for use in adults. In clinical trials (Studies 1, 2, and 3), a total of 1212 patients with relapsing forms of multiple sclerosis received fingolimod 0.5 mg capsules. This included 783 patients who received fingolimod 0.5 mg in the 2-year placebo-controlled trials (Studies 1 and 3) and 429 patients who received fingolimod 0.5 mg in the 1-year active-controlled trial (Study 2). The overall exposure in the controlled trials was equivalent to 1716 person-years. Approximately 1000 patients received at least 2 years of treatment with fingolimod 0.5 mg capsules. In all clinical studies, including uncontrolled extension studies, the exposure to fingolimod 0.5 mg capsules was approximately 4119 person-years.
In placebo-controlled trials, the most frequent adverse reactions (incidence ≥ 10% and greater than placebo) for fingolimod 0.5 mg capsules were headache, liver transaminase elevation, diarrhea, cough, influenza, sinusitis, back pain, abdominal pain, and pain in extremity. Adverse events that led to treatment discontinuation and occurred in more than 1% of patients taking fingolimod 0.5 mg capsules, were serum transaminase elevations (4.7% compared to 1% on placebo) and basal cell carcinoma (1% compared to 0.5% on placebo).
Table 1 lists adverse reactions in clinical studies in adults that occurred in ≥ 1% of fingolimod-treated patients and ≥ 1% higher rate than for placebo.
Table 1: Adverse Reactions Reported in Adult Studies 1 and 3 (Occurring in ≥ 1% of Patients and Reported for Fingolimod 0.5 mg Capsules at ≥ 1% Higher Rate than for Placebo) | Fingolimod 0.5 mg Capsules N = 783 | Placebo N = 773 |
|---|
| Adverse Drug Reactions | % | % |
|---|
| Infections | | |
| Influenza | 11 | 8 |
| Sinusitis | 11 | 8 |
| Bronchitis | 8 | 5 |
| Herpes zoster | 2 | 1 |
| Tinea versicolor | 2 | < 1 |
| Cardiac disorders | | |
| Bradycardia | 3 | 1 |
| Nervous system disorders | | |
| Headache | 25 | 24 |
| Migraine | 6 | 4 |
| Gastrointestinal disorders | | |
| Nausea | 13 | 12 |
| Diarrhea | 13 | 10 |
| Abdominal pain | 11 | 10 |
| General disorders and administration-site conditions | | |
| Asthenia | 2 | 1 |
| Musculoskeletal and connective tissue disorders | | |
| Back pain | 10 | 9 |
| Pain in extremity | 10 | 7 |
| Skin and subcutaneous tissue disorders | | |
| Alopecia | 3 | 2 |
| Actinic keratosis | 2 | 1 |
| Investigations | | |
Liver transaminase elevations (ALT/GGT/AST) | 15 | 4 |
| Blood triglycerides increased | 3 | 1 |
| Respiratory, thoracic, and mediastinal disorders | | |
| Cough | 12 | 11 |
| Dyspnea | 9 | 7 |
| Eye disorders | | |
| Vision blurred | 4 | 2 |
| Vascular disorders | | |
| Hypertension | 8 | 4 |
| Blood and lymphatic system disorders | | |
| Lymphopenia | 7 | < 1 |
| Leukopenia | 2 | < 1 |
| Neoplasms benign, malignant, and unspecified (including cysts and polyps) | | |
| Skin papilloma | 3 | 2 |
| Basal cell carcinoma | 2 | 1 |
Adverse reactions of seizure, dizziness, pneumonia, eczema, and pruritus were also reported in Studies 1 and 3 but did not meet the reporting rate criteria for inclusion in Table 1 (difference was less than 1%).
Adverse reactions with fingolimod 0.5 mg in Study 2, the 1-year active-controlled (versus interferon beta-1a) study were generally similar to those in Studies 1 and 3.
Vascular Events
Vascular events, including ischemic and hemorrhagic strokes, and peripheral arterial occlusive disease were reported in premarketing clinical trials in patients who received fingolimod doses (1.25-5 mg) higher than recommended for use in MS. Similar events have been reported with fingolimod treatment in the postmarketing setting although a causal relationship has not been established.
Seizure
Cases of seizures, including status epilepticus, have been reported with the use of fingolimod capsules in clinical trials and in the postmarketing setting in adults [see Adverse Reactions (6.2)]. In adult clinical trials, the rate of seizures was 0.9% in fingolimod - treated patients and 0.3% in placebo-treated patients. It is unknown whether these events were related to the effects of multiple sclerosis alone, to fingolimod, or to a combination of both.
Pediatric Patients 10 Years of Age and Older
In the controlled pediatric trial (Study 4), the safety profile in pediatric patients receiving fingolimod capsules daily was similar to that seen in adult patients.
In the pediatric study, cases of seizures were reported in 5.6% of fingolimod-treated patients and 0.9% of interferon beta-1a-treated patients [see Use in Specific Populations (8.4)].
Risk Summary
Based on findings from animal studies, TASCENSO ODT may cause fetal harm when administered to a pregnant woman. Data from prospective reports to the fingolimod pregnancy registry are currently not sufficient to allow for an adequate assessment of the drug-associated risk for birth defects and miscarriage in humans.
In oral studies conducted in rats and rabbits, fingolimod demonstrated developmental toxicity, including an increase in malformations (rats) and embryolethality, when given to pregnant animals. The most common fetal visceral malformations in rats were persistent truncus arteriosus and ventricular septal defect. The receptor affected by fingolimod (sphingosine 1-phosphate receptor) is known to be involved in vascular formation during embryogenesis (see Data). Advise pregnant women of the potential risk to a fetus.
In the US general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2%-4% and 15%-20%, respectively. The background risk of major birth defects and miscarriage for the indicated population is unknown.
Clinical Considerations
In females planning to become pregnant, TASCENSO ODT should be stopped 2 months before planned conception.
The possibility of severe increase in disability should be considered in women who discontinue or are considering discontinuation of TASCENSO ODT because of pregnancy or planned pregnancy. In many of the cases in which increase in disability was reported after stopping fingolimod, the active moiety in TASCENSO ODT, patients had stopped fingolimod because of pregnancy or planned pregnancy [see Warnings and Precautions (5.9].
Data
Animal Data
When fingolimod was orally administered to pregnant rats during the period of organogenesis (0, 0.03, 0.1, and 0.3 mg/kg/day or 0, 1, 3, and 10 mg/kg/day), increased incidences of fetal malformations and embryofetal deaths were observed at all but the lowest dose tested (0.03 mg/kg/day). Oral administration to pregnant rabbits during organogenesis (0, 0.5, 1.5, and 5 mg/kg/day) resulted in increased incidences of embryofetal mortality and fetal growth retardation at the mid and high doses.
When fingolimod was orally administered to female rats during pregnancy and lactation (0, 0.05, 0.15, and 0.5 mg/kg/day), pup survival was decreased at all doses and a neurobehavioral (learning) deficit was seen in offspring at the high dose.
Risk Summary
There are no data on the presence of fingolimod in human milk, the effects on the breastfed infant, or the effects of the drug on milk production. Fingolimod is excreted in the milk of treated rats. When a drug is present in animal milk, it is likely that the drug will be present in human milk. The developmental and health benefits of breastfeeding should be considered along with the mother's clinical need for TASCENSO ODT and any potential adverse effects on the breastfed infant from TASCENSO ODT or from the underlying maternal condition.
Pregnancy Testing
The pregnancy status of females of reproductive potential should be verified prior to starting treatment with TASCENSO ODT [see Use in Specific Populations (8.1)].
Contraception
Before initiation of TASCENSO ODT, females of reproductive potential should be counseled on the potential for a serious risk to the fetus and the need for effective contraception during treatment with TASCENSO ODT [see Warnings and Precautions (5.9) and Use in Specific Populations (8.1)]. Since it takes approximately 2 months to eliminate the compound from the body after stopping treatment, the potential risk to the fetus may persist. Advise females of reproductive potential to use appropriate effective contraception during this period [see Warnings and Precautions (5.8, 5.13)].
Juvenile Animal Toxicity Data
In a study in which fingolimod (0.3, 1.5, or 7.5 mg/kg/day) was orally administered to young rats from weaning through sexual maturity, changes in bone mineral density and persistent neurobehavioral impairment (altered auditory startle) were observed at all doses. Delayed sexual maturation was noted in females at the highest dose tested and in males at all doses. The bone changes observed in fingolimod-treated juvenile rats are consistent with a reported role of S1P in the regulation of bone mineral homeostasis.
When fingolimod (0.5 or 5 mg/kg/day) was orally administered to rats from the neonatal period through sexual maturity, a marked decrease in T-cell dependent antibody response was observed at both doses. This effect had not fully recovered by 6-8 weeks after the end of treatment.
Overall, a no-effect dose for adverse developmental effects in juvenile animals was not identified.
Heart Rate and Rhythm
Fingolimod causes a transient reduction in heart rate and AV conduction at treatment initiation [see Warnings and Precautions (5.1)].
Heart rate progressively increases after the first day, returning to baseline values within 1 month of the start of chronic treatment.
Autonomic responses of the heart, including diurnal variation of heart rate and response to exercise, are not affected by fingolimod treatment.
Fingolimod treatment is not associated with a decrease in cardiac output.
Potential to Prolong the QT Interval
In a thorough QT interval study of doses of 1.25 or 2.5 mg fingolimod capsules at steady-state, when a negative chronotropic effect of fingolimod was still present, fingolimod treatment resulted in a prolongation of QTc, with the upper boundary of the 90% confidence interval (CI) of 14.0 msec. There is no consistent signal of increased incidence of QTc outliers, either absolute or change from baseline, associated with fingolimod treatment. In MS studies, there was no clinically relevant prolongation of the QT interval, but patients at risk for QT prolongation were not included in clinical studies.
Immune System
Effects on Immune Cell Numbers in the Blood
In a study in which 12 adult subjects received fingolimod 0.5 mg capsules daily, the lymphocyte count decreased to approximately 60% of baseline within 4 to 6 hours after the first dose. With continued daily dosing, the lymphocyte count continued to decrease over a 2-week period, reaching a nadir count of approximately 500 cells/mcL or approximately 30% of baseline. In a placebo-controlled study in 1272 MS patients (of whom 425 received fingolimod 0.5 mg capsules daily and 418 received placebo), 18% (N = 78) of patients on fingolimod 0.5 mg reached a nadir of < 200 cells/mcL on at least 1 occasion. No patient on placebo reached a nadir of < 200 cells/mcL. Low lymphocyte counts are maintained with chronic daily dosing of fingolimod 0.5 mg daily
Chronic fingolimod dosing leads to a mild decrease in the neutrophil count to approximately 80% of baseline. Monocytes are unaffected by fingolimod.
Peripheral lymphocyte count increases are evident within days of stopping fingolimod treatment and typically normal counts are reached within 1 to 2 months.
Effect on Antibody Response
Fingolimod reduces the immune response to vaccination, as evaluated in 2 studies.
In the first study, the immunogenicity of keyhole limpet hemocyanin (KLH) and pneumococcal polysaccharide vaccine (PPV-23) immunization were assessed by IgM and IgG titers in a steady-state, randomized, placebo-controlled study in healthy adult volunteers. Compared to placebo, antigen-specific IgM titers were decreased by 91% and 25% in response to KLH and PPV-23, respectively, in subjects on fingolimod 0.5 mg capsules. Similarly, IgG titers were decreased by 45% and 50%, in response to KLH and PPV-23, respectively, in subjects on fingolimod 0.5 mg daily compared to placebo. The responder rate for fingolimod 0.5 mg as measured by the number of subjects with a > 4-fold increase in KLH IgG was comparable to placebo and 25% lower for PPV-23 IgG, while the number of subjects with a > 4-fold increase in KLH and PPV-23 IgM was 75% and 40% lower, respectively, compared to placebo. The capacity to mount a skin delayed-type hypersensitivity reaction to Candida and tetanus toxoid was decreased by approximately 30% in subjects on fingolimod 0.5 mg daily, compared to placebo. Immunologic responses were further decreased with fingolimod 1.25 mg (a dose higher than recommended in MS) [see Warnings and Precautions (5.2)].
In the second study, the immunogenicity of Northern hemisphere seasonal influenza and tetanus toxoid vaccination was assessed in a 12-week steady-state, randomized, placebo-controlled study of fingolimod 0.5 mg capsules in adult multiple sclerosis patients (n = 136). The responder rate 3 weeks after vaccination, defined as seroconversion or a ≥ 4-fold increase in antibody directed against at least 1 of the 3 influenza strains, was 54% for fingolimod 0.5 mg and 85% in the placebo group. The responder rate 3 weeks after vaccination, defined as seroconversion or a ≥ 4-fold increase in antibody directed against tetanus toxoid was 40% for fingolimod 0.5 mg and 61% in the placebo group.
Pulmonary Function
Single fingolimod doses ≥ 5 mg (higher than the TASCENSO ODT recommended dose of 0.25mg) are associated with a dose-dependent increase in airway resistance. In a 14-day study of 0.5, 1.25, or 5 mg/day, fingolimod was not associated with impaired oxygenation or oxygen desaturation with exercise or an increase in airway responsiveness to methacholine. Subjects on fingolimod treatment had a normal bronchodilator response to inhaled beta-agonists.
In a 14-day placebo-controlled study of adult patients with moderate asthma, no effect was seen for fingolimod 0.5 mg capsules (higher than the TASCENSO ODT recommended dose of 0.25mg). A 10% reduction in mean FEV1 at 6 hours after dosing was observed in adult patients receiving fingolimod 1.25 mg (higher than the TASCENSO ODT recommended dose of 0.25mg) on Day 10 of treatment. Fingolimod 1.25 mg was associated with a 5-fold increase in the use of rescue short-acting beta-agonists.
Absorption
The Tmax of fingolimod is 12–16 hours. The apparent absolute oral bioavailability is 93%.
Food intake does not alter Cmax or (AUC) of fingolimod or fingolimod-phosphate. Therefore, TASCENSO ODT may be taken without regard to meals.
Steady-state blood concentrations of fingolimod are reached within 1 to 2 months following once-daily administration and steady-state levels are approximately 10-fold greater than with the initial dose.
Distribution
Fingolimod highly (86%) distributes in red blood cells. Fingolimod-phosphate has a smaller uptake in blood cells of < 17%. Fingolimod and fingolimod-phosphate are > 99.7% protein bound. Fingolimod and fingolimod-phosphate protein binding is not altered by renal or hepatic impairment.
Fingolimod is extensively distributed to body tissues with a volume of distribution of about 1200 ± 260 L.
Metabolism
The biotransformation of fingolimod in humans occurs by 3 main pathways: by reversible stereoselective phosphorylation to the pharmacologically active (S)-enantiomer of fingolimod-phosphate, by oxidative biotransformation catalyzed mainly by the cytochrome P450 4F2 (CYP4F2) and possibly other CYP4F isoenzymes with subsequent fatty acid-like degradation to inactive metabolites, and by formation of pharmacologically inactive non-polar ceramide analogs of fingolimod.
Inhibitors or inducers of CYP4F2 and possibly other CYP4F isozymes might alter the exposure of fingolimod or fingolimod-phosphate. In vitro studies in hepatocytes indicated that CYP3A4 may contribute to fingolimod metabolism in the case of strong induction of CYP3A4.
Following single oral administration of [14C] fingolimod, the major fingolimod-related components in blood, as judged from their contribution to the AUC up to 816 hours post-dose of total radiolabeled components, are fingolimod itself (23.3%), fingolimod-phosphate (10.3%), and inactive metabolites [M3 carboxylic acid metabolite (8.3%), M29 ceramide metabolite (8.9%), and M30 ceramide metabolite (7.3%)].
Elimination
Fingolimod blood clearance is 6.3 ± 2.3 L/h, and the average apparent terminal half-life (t1/2) is 6 to 9 days. Blood levels of fingolimod-phosphate decline in parallel with those of fingolimod in the terminal phase, yielding similar half-lives for both.
After oral administration, about 81% of the dose is slowly excreted in the urine as inactive metabolites. Fingolimod and fingolimod-phosphate are not excreted intact in urine but are the major components in the feces with amounts of each representing less than 2.5% of the dose.
Specific Populations
Pediatric Patients
The median fingolimod-phosphate (fingolimod-P) concentration in pediatric MS patients aged 10 to less than 18 years was 1.10 ng/mL, as compared to 1.35 ng/mL in adult MS patients.
Gender
Gender has no clinically significant influence on fingolimod and fingolimod-phosphate pharmacokinetics.
Race
The effects of race on fingolimod and fingolimod-phosphate pharmacokinetics cannot be adequately assessed due to a low number of non-white patients in the clinical program.
Renal Impairment
TASCENSO ODT 0.25 mg is appropriate for use in pediatric patients with renal impairment. The systemic exposure of 2 metabolites (M2 and M3) is increased by 3-and 13-fold, respectively. The toxicity of these metabolites has not been fully characterized.
A study in patients with mild or moderate renal impairment has not been conducted.
Hepatic Impairment
In subjects with mild, moderate, or severe hepatic impairment (Child-Pugh class A, B, and C), no change in fingolimod Cmax was observed, but fingolimod AUC0-∞ was increased respectively by 12%, 44%, and 103%. In patients with severe hepatic impairment (Child-Pugh class C), fingolimod-phosphate Cmax was decreased by 22% and AUC0-96 hours was decreased by 29%. The pharmacokinetics of fingolimod-phosphate was not evaluated in patients with mild or moderate hepatic impairment. The apparent elimination half-life of fingolimod is unchanged in subjects with mild hepatic impairment but is prolonged by about 50% in patients with moderate or severe hepatic impairment.
Patients with severe hepatic impairment (Child-Pugh class C) should be closely monitored, as the risk of adverse reactions is greater [see Warnings and Precautions (5.6)].
No dose adjustment is needed in patients with mild or moderate hepatic impairment (Child-Pugh class A and B).
Drug Interactions
Ketoconazole
The coadministration of ketoconazole (a potent inhibitor of CYP3A and CYP4F) 200 mg twice-daily at steady-state and a single dose of fingolimod 5 mg led to a 70% increase in AUC of fingolimod and fingolimod-phosphate. Patients who use TASCENSO ODT and systemic ketoconazole concomitantly should be closely monitored, as the risk of adverse reactions is greater [see Drug Interactions (7.2)].
Carbamazepine
The coadministration of carbamazepine (a potent CYP450 enzyme inducer) 600 mg twice-daily at steady-state and a single dose of fingolimod 2 mg decreased blood concentrations (AUC) of fingolimod and fingolimod-phosphate by approximately 40%. The clinical impact of this decrease is unknown.
Other strong CYP450 enzyme inducers, e.g., rifampicin, phenytoin, phenobarbital, and St. John's wort, may also reduce AUC of fingolimod and fingolimod-phosphate. The clinical impact of this potential decrease is unknown.
Potential of Fingolimod and Fingolimod-phosphate to Inhibit the Metabolism of Comedications
In vitro inhibition studies using pooled human liver microsomes and specific metabolic probe substrates demonstrate that fingolimod has little or no capacity to inhibit the activity of the following CYP enzymes: CYP1A2, CYP2A6, CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP2D6, CYP2E1, CYP3A4/5, or CYP4A9/11 (fingolimod only), and similarly fingolimod-phosphate has little or no capacity to inhibit the activity of CYP1A2, CYP2A6, CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP2D6, CYP2E1, or CYP3A4 at concentrations up to 3 orders of magnitude of therapeutic concentrations. Therefore, fingolimod and fingolimod-phosphate are unlikely to reduce the clearance of drugs that are mainly cleared through metabolism by the major CYP isoenzymes described above.
Potential of Fingolimod and Fingolimod-phosphate to Induce its Own and/or the Metabolism of Comedications
Fingolimod was examined for its potential to induce human CYP3A4, CYP1A2, CYP4F2, and MDR1 (P-glycoprotein) mRNA and CYP3A, CYP1A2, CYP2B6, CYP2C8, CYP2C9, CYP2C19, and CYP4F2 activity in primary human hepatocytes. Fingolimod did not induce mRNA or activity of the different CYP enzymes and MDR1 with respect to the vehicle control; therefore, no clinically relevant induction of the tested CYP enzymes or MDR1 by fingolimod are expected at therapeutic concentrations. Fingolimod-phosphate was also examined for its potential to induce mRNA and/or activity of human CYP1A2, CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP3A, CYP4F2, CYP4F3B, and CYP4F12. Fingolimod-phosphate is not expected to have clinically significant induction effects on these enzymes at therapeutic doses of fingolimod. In vitro experiments did not provide an indication of CYP induction by fingolimod-phosphate.
Transporters
Based on in vitro data, fingolimod as well as fingolimod-phosphate are not expected to inhibit the uptake of comedications and/or biologics transported by the organic anion transporting polypeptides OATP1B1, OATP1B3, or the sodium taurocholate co-transporting polypeptide (NTCP). Similarly, they are not expected to inhibit the efflux of comedications and/or biologics transported by the breast cancer resistance protein (BCRP), the bile salt export pump (BSEP), the multidrug resistance-associated protein 2 (MRP2), or P-glycoprotein (P-gp) at therapeutic concentrations.
Oral Contraceptives
The coadministration of fingolimod capsules daily with oral contraceptives (ethinylestradiol and levonorgestrel) did not elicit any clinically significant change in oral contraceptives exposure. Fingolimod and fingolimod-phosphate exposure were consistent with those from previous studies. No interaction studies have been performed with oral contraceptives containing other progestagens; however, an effect of fingolimod on their exposure is not expected.
Cyclosporine
The pharmacokinetics of single-dose fingolimod was not altered during coadministration with cyclosporine at steady-state, nor was cyclosporine steady-state pharmacokinetics altered by fingolimod. These data indicate that TASCENSO ODT is unlikely to reduce or increase the clearance of drugs cleared mainly by CYP3A4. Potent inhibition of transporters MDR1 (P-gp), MRP2, and OATP-1B1 does not influence fingolimod disposition.
Isoproterenol, Atropine, Atenolol, and Diltiazem
Single-dose fingolimod and fingolimod-phosphate exposure was not altered by coadministered isoproterenol or atropine. Likewise, the single-dose pharmacokinetics of fingolimod and fingolimod-phosphate and the steady-state pharmacokinetics of both atenolol and diltiazem were unchanged during the coadministration of the latter 2 drugs individually with fingolimod.
Population Pharmacokinetics Analysis
A population pharmacokinetics evaluation performed in MS patients did not provide evidence for a significant effect of fluoxetine and paroxetine (strong CYP2D6 inhibitors) on fingolimod or fingolimod-phosphate predose concentrations. In addition, the following commonly coprescribed substances had no clinically relevant effect (< 20%) on fingolimod or fingolimod-phosphate predose concentrations: baclofen, gabapentin, oxybutynin, amantadine, modafinil, amitriptyline, pregabalin, and corticosteroids.
Cardiac Effects
Advise patients that initiation of TASCENSO ODT treatment results in a transient decrease in heart rate. Inform patients that they will need to be observed in the doctor's office or other facility for at least 6 hours after the first dose, after reinitiation if treatment is interrupted or discontinued for certain periods, and if dosage of any fingolimod product approved for use at a higher dose is increased [see Dosage and Administration (2.4), Warnings and Precautions (5.1)].
Risk of Infections
Inform patients that they may have an increased risk of infections, some of which could be life-threatening, when taking TASCENSO ODT, and that they should contact their physician if they develop symptoms of infection. Advise patients that the use of some vaccines should be avoided during treatment with TASCENSO ODT and for 2 months after discontinuation. Recommend to patients that they delay treatment with TASCENSO ODT until after VZV vaccination if they have not had chickenpox or a previous VZV vaccination. Inform patients that prior or concomitant use of drugs that suppress the immune system may increase the risk of infection [see Warnings and Precautions (5.2)].
Progressive Multifocal Leukoencephalopathy
Inform patients that cases of progressive multifocal leukoencephalopathy (PML) have occurred in patients who received fingolimod, the active moiety in TASCENSO ODT. Inform the patient that PML is characterized by a progression of deficits and usually leads to death or severe disability over weeks or months. Instruct the patient of the importance of contacting their doctor if they develop any symptoms suggestive of PML. Inform the patient that typical symptoms associated with PML are diverse, progress over days to weeks, and include progressive weakness on one side of the body or clumsiness of limbs, disturbance of vision, and changes in thinking, memory, and orientation leading to confusion and personality changes [see Warnings and Precautions (5.3)].
Macular Edema
Advise patients that TASCENSO ODT may cause macular edema, and that they should contact their physician if they experience any changes in their vision. Inform patients with diabetes mellitus or a history of uveitis that their risk of macular edema is increased [see Warnings and Precautions (5.4)].
Hepatic Effects
Inform patients that TASCENSO ODT may cause liver injury. Advise patients that they should contact their physician if they have any unexplained nausea, vomiting, abdominal pain, fatigue, anorexia, or jaundice and/or dark urine [see Warnings and Precautions (5.5)].
Posterior Reversible Encephalopathy Syndrome
Advise patients to immediately report to their healthcare provider any symptoms involving sudden onset of severe headache, altered mental status, visual disturbances, or seizure. Inform patients that delayed treatment could lead to permanent neurological sequelae [see Warnings and Precautions (5.6)].
Respiratory Effects
Advise patients that they should contact their physician if they experience new onset or worsening of dyspnea [see Warnings and Precautions (5.7)].
Fetal Risk
- Advise pregnant women and females of reproductive potential of the potential risk to a fetus. Advise females to inform their healthcare provider of a known or suspected pregnancy [see Warnings and Precautions (5.8) and Use in Specific Populations (8.1, 8.3)].
- Advise female patients of reproductive potential to use effective contraception during treatment with TASCENSO ODT and for two months after the final dose [see Use in Specific Populations (8.3)].
Severe Increase in Disability After Stopping TASCENSO ODT
Inform patients that severe increase in disability has been reported after discontinuation of fingolimod. Advise patients to contact their physician if they develop worsening symptoms of MS following discontinuation of TASCENSO ODT [see Warnings and Precautions (5.9)].
Malignancies
Advise patients that basal cell carcinoma and melanoma are associated with use of fingolimod, the active moiety in TASCENSO ODT. Advise patients that any suspicious skin lesions should be promptly evaluated. Advise patients to limit exposure to sunlight and ultraviolet light by wearing protective clothing and using a sunscreen with a high protection factor. Inform patients that lymphoma has also occurred in patients receiving fingolimod, the active moiety in TASCENSO ODT [see Warnings and Precautions (5.12)].
Persistence of TASCENSO ODT Effects After Drug Discontinuation
Advise patients that TASCENSO ODT remains in the blood and continues to have effects, including decreased blood lymphocyte counts, for up to 2 months following the last dose [see Warnings and Precautions (5.13)].
Hypersensitivity Reactions
Advise patients that TASCENSO ODT may cause hypersensitivity reactions including rash, urticaria, and angioedema. Advise patients to contact their physician if they have any symptoms associated with hypersensitivity [see Warnings and Precautions (5.14)].
Pregnancy
Instruct patients that if they are pregnant or plan to become pregnant while taking TASCENSO ODT they should inform their physician [see Use in Specific Populations (8.1)].
For full prescribing information, please visit www.tascenso.com.
Distributed by:
Cycle Pharmaceuticals Ltd
The Broers Building
21 JJ Thomson Ave
Cambridge, CB3 0FA, United Kingdom
TASCENSO ODT is a trademark of Handa Neuroscience, LLC.