Zetonna (Page 3 of 6)

8.3 Nursing Mothers

It is not known if ciclesonide is excreted in human milk. However, other corticosteroids are excreted in human milk. In a study with lactating rats, minimal but detectable levels of radiolabeled ciclesonide were recovered in milk. Caution should be used when ZETONNA is administered to nursing women.

8.4 Pediatric Use

The safety and effectiveness for seasonal and perennial allergic rhinitis in children 12 years of age and older have been established. The safety and efficacy of ZETONNA for treatment of the symptoms of seasonal and perennial allergic rhinitis in patients 11 years of age and younger have not been established.

The safety and efficacy of ZETONNA in pediatric patients 6-11 years of age were evaluated in two randomized, double blind, parallel placebo-controlled clinical trials in 1693 pediatric patients with allergic rhinitis. Of the two trials, one was 2 weeks in duration and evaluated the efficacy of two doses of ZETONNA (37 mcg and 74 mcg once daily) in 847 patients with seasonal allergic rhinitis. The second clinical trial was 12 weeks in duration and evaluated the efficacy of two doses of ZETONNA (37 mcg and 74 mcg once daily) in 846 patients with perennial allergic rhinitis. The trials were similar in design to the trials conducted in adolescents and adults. The primary efficacy endpoint was the difference from placebo in the change from baseline of the average morning and evening reflective total nasal symptom scores (rTNSS) averaged over 2 weeks of treatment in the seasonal allergic rhinitis trial and over the first 6 weeks of treatment in the perennial allergic rhinitis trial. In the 2-week trial in patients with seasonal allergic rhinitis, treatment with ZETONNA at either dose failed to demonstrate efficacy. In the 12-week trial in patients with perennial allergic rhinitis, ZETONNA 37 mcg and 74 mcg once daily both demonstrated significant improvement in rTNSS compared to placebo with treatment differences of 0.59 (95% CI: 0.23, 0.95) and 0.47 (95% CI: 0.11, 0.83), respectively. The safety profile observed in children 6 to 11 years of age with seasonal or perennial allergic rhinitis was similar to the adverse reactions observed in the clinical trial population of patients 12 year of age and older [see Adverse Reactions (6.1) ].

The effect of ZETONNA on the HPA axis was evaluated in one placebo-controlled clinical study of 6 weeks in duration in children 6 to11 years of age with perennial allergic rhinitis [see Clinical Pharmacology (12.2) ].

Studies in children under 6 years of age have not been conducted.

Controlled clinical trials have shown that intranasal corticosteroids may cause a reduction in growth velocity in pediatric patients. This effect has been observed in the absence of laboratory evidence of hypothalamic-pituitary-adrenal (HPA)-axis suppression, suggesting that growth velocity is a more sensitive indicator of systemic corticosteroid exposure in pediatric patients than some commonly used tests of HPA-axis function. The long-term effects of this reduction in growth velocity associated with intranasal corticosteroids, including the impact on final adult height, are unknown. The potential for “catch-up” growth following discontinuation of treatment with intranasal corticosteroids has not been adequately studied. The growth of pediatric patients receiving intranasal corticosteroids, including ZETONNA, should be monitored routinely (e.g., via stadiometry). A 52-week, multi-center, double-blind, randomized, placebo-controlled parallel-group trial was conducted to assess the effect of orally inhaled ciclesonide (ALVESCO® Inhalation Aerosol) on growth rate in 609 pediatric patients with mild persistent asthma, aged 5 to 8.5 years. Treatment groups included orally inhaled ciclesonide 40 mcg or 160 mcg or placebo given once daily. Growth was measured by stadiometer height during the baseline, treatment and follow-up periods. The primary comparison was the difference in growth rates between ciclesonide 40 and 160 mcg and placebo groups. Conclusions cannot be drawn from this trial because compliance could not be assured. Ciclesonide blood levels were also not measured during the one-year treatment period. There was no difference in efficacy measures between the placebo and the orally inhaled ciclesonide (ALVESCO® Inhalation Aerosol) groups.

The potential growth effects of prolonged treatment should be weighed against clinical benefits obtained and the availability of safe and effective noncorticosteroid treatment alternatives. To minimize the systemic effects of intranasal corticosteroids, each patient should be titrated to the lowest dose that effectively controls his/her symptoms.

The potential for ZETONNA to cause growth suppression in susceptible patients or when given at higher than recommended dosages cannot be ruled out.

8.5 Geriatric Use

Clinical trials of ZETONNA did not include sufficient numbers of patients age 65 and over to determine whether they responded differently from younger patients. Other reported clinical experience has not identified differences in responses between the elderly and younger patients. In general, dose selection for an elderly patient should be cautious reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.

10 OVERDOSAGE

Chronic overdosage may result in signs or symptoms of hypercorticism [see Warnings and Precautions (5.5) ]. There are no data on the effects of acute or chronic overdosage with ZETONNA.

11 DESCRIPTION

The active component of ZETONNA is ciclesonide, a non-halogenated glucocorticoid having the chemical name pregna -1,4-diene-3,20-dione, 16,17-[[R-cyclohexylmethylene]bis(oxy)]-11-hydroxy-21-(2-methyl-1-oxopropoxy)-,(11ß,16α)-. Ciclesonide is delivered as the R-epimer. The empirical formula is C32 H44 O7 and its molecular weight is 540.7. Its structural formula is as follows:

Structural Formula

Ciclesonide is a white to yellow-white powder. It is soluble in dehydrated alcohol, acetone, dichloromethane, and chloroform. ZETONNA is comprised of a pressurized, metered-dose aerosol canister and actuator, which is fitted with a dose indicator. ZETONNA is intended for intranasal use only. Each canister contains a solution of ciclesonide in propellant HFA-134a (1,1,1,2 tetrafluoroethane) and ethanol. After priming, ZETONNA delivers 50 mcg of ciclesonide from the valve and 37 mcg of ciclesonide from the actuator. This product delivers 50 microliters (59.3 milligrams) of solution as fine particle mist from the valve with each actuation.

12 CLINICAL PHARMACOLOGY

12.1 Mechanism of Action

Ciclesonide is a pro-drug that is enzymatically hydrolyzed to a pharmacologically active metabolite, C21-desisobutyryl-ciclesonide (des-ciclesonide or RM1) following intranasal application. Des-ciclesonide has anti-inflammatory activity with affinity for the glucocorticoid receptor that is 120 times higher than the parent compound.

The precise mechanism through which ciclesonide affects allergic rhinitis symptoms is not known. Corticosteroids have been shown to have a wide range of effects on multiple cell types (e.g., mast cells, eosinophils, neutrophils, macrophages, and lymphocytes) and mediators (e.g., histamine, eicosanoids, leukotrienes, and cytokines) involved in allergic inflammation.

12.2 Pharmacodynamics

Adrenal Function: In a 6-week, randomized, double-blind, placebo-controlled, parallel-group trial in adolescents and adults 12-73 years of age with perennial allergic rhinitis, daily doses of 148 mcg and 282 mcg of ZETONNA were compared to placebo nasal aerosol. Dexamethasone 6 mg was used as an active control during the last 4 days of the trial. Adrenal function was assessed by 24-hr serum cortisol AUC before and after the treatment. At the end of 6 weeks of treatment, the LS means (SE) change from baseline in serum cortisol AUC(0-24) was ‑5.0 (4.6) mcg•hour/dL, -2.6 (4.6) mcg•hour/dL, and -4.6 (5.0) mcg•hour/dL for placebo (n=57), 148 mcg ZETONNA (n=60), and 282 mcg ZETONNA (n=50), respectively. The LS means difference from placebo for the change from baseline in serum cortisol AUC(0-24) was ‑2.4 mcg•hour/dL (95% CI: -15.1, 10.2) and -0.5 mcg•hour/dL (95% CI: ‑13.9, 13.0) for 148 mcg/day and 282 mcg/day treatments, respectively. The effects observed with the active control (dexamethasone, n=18) validate the sensitivity of the study to assess the effect of ciclesonide on the HPA axis.

In a 6-week, randomized, double-blind, placebo-controlled, parallel-group trial in patients 6 to 11 years of age with perennial allergic rhinitis, a daily dose of 74 mcg of ZETONNA was compared to placebo nasal aerosol. Adrenal function was assessed by 24-hr serum cortisol AUC before and after the treatment. At the end of 6 weeks of treatment, the LS means (SE) change from baseline in serum cortisol AUC(0-24) was 5.9 (5.6) mcg•hour/dL and 1.7 (5.2) mcg•hour/dL for placebo and ZETONNA, respectively. The LS means difference from placebo for the change from baseline in serum cortisol AUC(0-24) was 7.6 mcg•hour/dL (95% CI: -7.4, 22.6).

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