Ticagrelor 60 mg Tablet, Film Coated, 60-count — NDC 70756-047-60 (Billing 70756-0047-60)

12 CLINICAL PHARMACOLOGY

12.1Mechanism of Action Ticagrelor and its major metabolite reversibly interact with the platelet P2Y 12 ADP-receptor to prevent signal transduction and platelet activation. Ticagrelor and its active metabolite are approximately equipotent.

12.2Pharmacodynamics The inhibition of platelet aggregation (IPA) by ticagrelor and clopidogrel was compared in a 6-week study examining both acute and chronic platelet inhibition effects in response to 20 μM ADP as the platelet aggregation agonist. The onset of IPA was evaluated on Day 1 of the study following loading doses of 180 mg ticagrelor or 600 mg clopidogrel. As shown in Figure 5, IPA was higher in the ticagrelor group at all time points.

The maximum IPA effect of ticagrelor was reached at around 2 hours, and was maintained for at least 8 hours. The offset of IPA was examined after 6 weeks on ticagrelor 90 mg twice daily or clopidogrel 75 mg daily, again in response to 20 μM ADP. As shown in Figure 6, mean maximum IPA following the last dose of ticagrelor was 88% and 62% for clopidogrel.

The insert in Figure 6 shows that after 24 hours, IPA in the ticagrelor group (58%) was similar to IPA in clopidogrel group (52%), indicating that patients who miss a dose of ticagrelor would still maintain IPA similar to the trough IPA of patients treated with clopidogrel. After 5 days, IPA in the ticagrelor group was similar to IPA in the placebo group. It is not known how either bleeding risk or thrombotic risk track with IPA, for either ticagrelor or clopidogrel.

Figure 5 – Mean inhibition of platelet aggregation (±SE) following single oral doses of placebo, 180 mg ticagrelor or 600 mg clopidogrel Figure 6 - Mean inhibition of platelet aggregation (IPA) following 6 weeks on placebo, ticagrelor 90 mg twice daily, or clopidogrel 75 mg daily Transitioning from clopidogrel to ticagrelor resulted in an absolute IPA increase of 26.4% and from ticagrelor to clopidogrel resulted in an absolute IPA decrease of 24.5%. Patients can be transitioned from clopidogrel to ticagrelor without interruption of antiplatelet effect [see Dosage and Administration (2)] .

12.3Pharmacokinetics Ticagrelor demonstrates dose proportional pharmacokinetics, which are similar in patients and healthy volunteers. Absorption Ticagrelor can be taken with or without food. Absorption of ticagrelor occurs with a median t max of 1.5 h (range 1.0–4.0).

The formation of the major circulating metabolite AR-C124910XX (active) from ticagrelor occurs with a median t max of 2.5 h (range 1.5-5.0). The mean absolute bioavailability of ticagrelor is about 36% (range 30%-42%). Ingestion of a high-fat meal had no effect on ticagrelor C max , but resulted in a 21% increase in AUC.

The C max of its major metabolite was decreased by 22% with no change in AUC. Ticagrelor as crushed tablets mixed in water, given orally or administered through a nasogastric tube into the stomach, is bioequivalent to whole tablets (AUC and C max within 80-125% for ticagrelor and AR-C124910XX) with a median t max of 1.0 hour (range 1.0 – 4.0) for ticagrelor and 2.0 hours (range 1.0 –8.0) for AR-C124910XX. Distribution The steady state volume of distribution of ticagrelor is 88 L.

Ticagrelor and the active metabolite are extensively bound to human plasma proteins (>99%). Metabolism CYP3A4 is the major enzyme responsible for ticagrelor metabolism and the formation of its major active metabolite. Ticagrelor and its major active metabolite are weak P-glycoprotein substrates and inhibitors.

The systemic exposure to the active metabolite is approximately 30-40% of the exposure of ticagrelor. Ticagrelor is a BCRP inhibitor. Excretion The primary route of ticagrelor elimination is hepatic metabolism.

When radiolabeled ticagrelor is administered, the mean recovery of radioactivity is approximately 84% (58% in feces, 26% in urine). Recoveries of ticagrelor and the active metabolite in urine were both less than 1% of the dose. The primary route of elimi… [Excerpted — this section continues on DailyMed.]

12.1Mechanism of Action Ticagrelor and its major metabolite reversibly interact with the platelet P2Y 12 ADP-receptor to prevent signal transduction and platelet activation. Ticagrelor and its active metabolite are approximately equipotent.

12.3Pharmacokinetics Ticagrelor demonstrates dose proportional pharmacokinetics, which are similar in patients and healthy volunteers. Absorption Ticagrelor can be taken with or without food. Absorption of ticagrelor occurs with a median t max of 1.5 h (range 1.0–4.0).

The formation of the major circulating metabolite AR-C124910XX (active) from ticagrelor occurs with a median t max of 2.5 h (range 1.5-5.0). The mean absolute bioavailability of ticagrelor is about 36% (range 30%-42%). Ingestion of a high-fat meal had no effect on ticagrelor C max , but resulted in a 21% increase in AUC.

The C max of its major metabolite was decreased by 22% with no change in AUC. Ticagrelor as crushed tablets mixed in water, given orally or administered through a nasogastric tube into the stomach, is bioequivalent to whole tablets (AUC and C max within 80-125% for ticagrelor and AR-C124910XX) with a median t max of 1.0 hour (range 1.0 – 4.0) for ticagrelor and 2.0 hours (range 1.0 –8.0) for AR-C124910XX. Distribution The steady state volume of distribution of ticagrelor is 88 L.

Ticagrelor and the active metabolite are extensively bound to human plasma proteins (>99%). Metabolism CYP3A4 is the major enzyme responsible for ticagrelor metabolism and the formation of its major active metabolite. Ticagrelor and its major active metabolite are weak P-glycoprotein substrates and inhibitors.

The systemic exposure to the active metabolite is approximately 30-40% of the exposure of ticagrelor. Ticagrelor is a BCRP inhibitor. Excretion The primary route of ticagrelor elimination is hepatic metabolism.

When radiolabeled ticagrelor is administered, the mean recovery of radioactivity is approximately 84% (58% in feces, 26% in urine). Recoveries of ticagrelor and the active metabolite in urine were both less than 1% of the dose. The primary route of elimination for the major metabolite of ticagrelor is most likely to be biliary secretion.

The mean t 1/2 is approximately 7 hours for ticagrelor and 9 hours for the active metabolite. Specific Populations The effects of age, gender, ethnicity, renal impairment and mild hepatic impairment on the pharmacokinetics of ticagrelor are presented in Figure 7. Effects are modest and do not require dose adjustment.

Patients with End-Stage Renal Disease on Hemodialysis In patients with end stage renal disease on hemodialysis AUC and C max of ticagrelor 90 mg administered on a day without dialysis were 38% and 51% higher respectively, compared to subjects with normal renal function. A similar increase in exposure was observed when ticagrelor was administered immediately prior to dialysis showing that ticagrelor is not dialyzable. Exposure of the active metabolite increased to a lesser extent.

The IPA effect of ticagrelor was independent of dialysis in patients with end stage renal disease and similar to healthy adults with normal renal function. Figure 7 – Impact of intrinsic factors on the pharmacokinetics of ticagrelor * Single-dose of ticagrelor administered on a day without dialysis ** Ticagrelor has not been studied in patients with moderate or severe hepatic impairment Effects of Other Drugs on Ticagrelor CYP3A4 is the major enzyme responsible for ticagrelor metabolism and the formation of its major active metabolite.

The effects of other drugs on the pharmacokinetics of ticagrelor are presented in Figure 8 as change relative to ticagrelor given alone (test/reference). Strong CYP3A inhibitors (e.g., ketoconazole, itraconazole, and clarithromycin) substantially increase ticagrelor exposure. Moderate CYP3A inhibitors have lesser effects (e.g., diltiazem).

CYP3A inducers (e.g., rifampin) substantially reduce ticagrelor blood levels. P-gp inhibitors (e.g., cyclosporine) increase ticagrelor exposure. Co-administration of 5 mg intravenous morphine with 180 mg loading dose of ticagrelor decreased observed mean ticagrelor exposure by up to 25% in healthy adults and up to 36% in ACS patients undergoing PCI.

Tmax was delayed b… [Excerpted — this section continues on DailyMed.]

12.2Pharmacodynamics The inhibition of platelet aggregation (IPA) by ticagrelor and clopidogrel was compared in a 6-week study examining both acute and chronic platelet inhibition effects in response to 20 μM ADP as the platelet aggregation agonist. The onset of IPA was evaluated on Day 1 of the study following loading doses of 180 mg ticagrelor or 600 mg clopidogrel. As shown in Figure 5, IPA was higher in the ticagrelor group at all time points.

The maximum IPA effect of ticagrelor was reached at around 2 hours, and was maintained for at least 8 hours. The offset of IPA was examined after 6 weeks on ticagrelor 90 mg twice daily or clopidogrel 75 mg daily, again in response to 20 μM ADP. As shown in Figure 6, mean maximum IPA following the last dose of ticagrelor was 88% and 62% for clopidogrel.

The insert in Figure 6 shows that after 24 hours, IPA in the ticagrelor group (58%) was similar to IPA in clopidogrel group (52%), indicating that patients who miss a dose of ticagrelor would still maintain IPA similar to the trough IPA of patients treated with clopidogrel. After 5 days, IPA in the ticagrelor group was similar to IPA in the placebo group. It is not known how either bleeding risk or thrombotic risk track with IPA, for either ticagrelor or clopidogrel.

Figure 5 – Mean inhibition of platelet aggregation (±SE) following single oral doses of placebo, 180 mg ticagrelor or 600 mg clopidogrel Figure 6 - Mean inhibition of platelet aggregation (IPA) following 6 weeks on placebo, ticagrelor 90 mg twice daily, or clopidogrel 75 mg daily Transitioning from clopidogrel to ticagrelor resulted in an absolute IPA increase of 26.4% and from ticagrelor to clopidogrel resulted in an absolute IPA decrease of 24.5%. Patients can be transitioned from clopidogrel to ticagrelor without interruption of antiplatelet effect [see Dosage and Administration (2)] .

14 CLINICAL STUDIES

14.2Coronary Artery Disease but No Prior Stroke or Myocardial Infarction THEMIS The THEMIS study (NCT01991795) was a double-blind, parallel group, study in which 19,220 patients with CAD and Type 2 Diabetes Mellitus (T2DM) but no history of MI or stroke were randomized to twice daily ticagrelor or placebo, on a background of 75-150 mg of aspirin. The primary endpoint was the composite of first occurrence of CV death, MI, and stroke. CV death, MI, ischemic stroke, and all-cause death were assessed as secondary endpoints.

Patients were eligible to participate if they were ≥ 50 years old with CAD, defined as a history of PCI or CABG, or angiographic evidence of ≥ 50% lumen stenosis of at least 1 coronary artery and T2DM treated for at least 6 months with glucose-lowering medication. Patients with previous intracerebral hemorrhage, gastrointestinal bleeding within the past 6 months, known bleeding diathesis, and coagulation disorder were excluded. Patients taking anticoagulants or ADP receptor antagonists were excluded from participating, and patients who developed an indication for those medications during the trial were discontinued from study drug.

Patients were treated for a median of 33 months and up to 58 months. Patients were predominantly male (69%) with a mean age of 66 years. At baseline, 80% had a history of coronary artery revascularization; 58% had undergone PCI, 29% had undergone a CABG and 7% had undergone both.

The proportion of patients studied in the US was 12%. Patients in THEMIS had established CAD and other risk factors that put them at higher cardiovascular risk. Ticagrelor was superior to placebo in reducing the incidence of CV death, MI, or stroke.

The effect on the composite endpoint was driven by the individual components MI and stroke; see Table 9. Table 9 – Primary composite endpoint, primary endpoint components, and secondary endpoints (THEMIS) Ticagrelor N=9619 Placebo N=9601 HR (95% CI) p -value Events / 1000 patient years Events / 1000 patient years Time to first CV death, MI, or stroke * 24 27 0.90 (0.81, 0.99)

0.04CV death † 12 11 1.02 (0.88, 1.18) Myocardial infarction † 9 11 0.84 (0.71, 0.98) Stroke † 6 7 0.82 (0.67, 0.99) Secondary endpoints CV death 12 11 1.02 (0.88, 1.18) Myocardial infarction 9 11 0.84 (0.71, 0.98) Ischemic stroke 5 6 0.80 (0.64, 0.99) All-cause death 18 19 0.98 (0.87, 1.10) CI = Confidence interval; CV = Cardiovascular; HR = Hazard ratio; MI = Myocardial infarction. * Primary endpoint † The event rate for the components CV death, MI and stroke are calculated from the actual number of first events for each component.

The Kaplan-Meier curve (Figure 15) shows time to first occurrence of the primary composite endpoint of CV death, MI, or stroke. Figure 15 - Time to First Occurrence of CV death, MI or Stroke (THEMIS) T = Ticagrelor; P = Placebo; N = Number of patients. The treatment effect of ticagrelor appeared similar across patient subgroups, see Figure 16.

Figure 16 –Subgroup analyses of ticagrelor (THEMIS) Note: The figure above presents effects in various subgroups all of which are baseline characteristics. The 95% confidence limits that are shown do not take into account how many comparisons were made, nor do they reflect the effect of a particular factor after adjustment for all other factors. Apparent homogeneity or heterogeneity among groups should not be over-interpreted.

14.3Acute Ischemic Stroke or Transient Ischemic Attack (TIA) THALES The THALES study (NCT03354429) was a 11,016-patient, randomized, double-blind, parallel-group study of ticagrelor 90 mg twice daily versus placebo in patients with acute ischemic stroke or transient ischemic attack (TIA). The primary endpoint was the first occurrence of the composite of stroke and death up to 30 days. Ischemic stroke was assessed as one of the secondary endpoints.

Patients were eligible to participate if they were ≥40 years old, with non-cardioembolic acute ischemic stroke (NIHSS score ≤5) or h… [Excerpted — this section continues on DailyMed.]

13 NONCLINICAL TOXICOLOGY

13.1Carcinogenesis, Mutagenesis, Impairment of Fertility Carcinogenesis Ticagrelor was not carcinogenic in the mouse at doses up to 250 mg/kg/day or in the male rat at doses up to 120 mg/kg/day (19 and 15 times the MRHD of 90 mg twice daily on the basis of AUC, respectively). Uterine carcinomas, uterine adenocarcinomas and hepatocellular adenomas were seen in female rats at doses of 180 mg/kg/day (29-fold the maximally recommended dose of 90 mg twice daily on the basis of AUC), whereas 60 mg/kg/day (8-fold the MRHD based on AUC) was not carcinogenic in female rats.

Mutagenesis Ticagrelor did not demonstrate genotoxicity when tested in the Ames bacterial mutagenicity test, mouse lymphoma assay and the rat micronucleus test. The active O-demethylated metabolite did not demonstrate genotoxicity in the Ames assay and mouse lymphoma assay. Impairment of Fertility Ticagrelor had no effect on male fertility at doses up to 180 mg/kg/day or on female fertility at doses up to 200 mg/kg/day (>15-fold the MRHD on the basis of AUC).

Doses of ≥10 mg/kg/day given to female rats caused an increased incidence of irregular duration estrus cycles (1.5-fold the MRHD based on AUC).