Zenpep (Page 3 of 6)

7 DRUG INTERACTIONS

No drug interactions have been identified. No formal interaction studies have been conducted.

8 USE IN SPECIFIC POPULATIONS

8.1 Pregnancy

Risk Summary

Published data from case reports with pancrelipase use in pregnant women have not identified a drug-associated risk of major birth defects, miscarriage or other adverse maternal or fetal outcomes. Pancrelipase is minimally absorbed systematically; therefore, maternal use is not expected to result in fetal exposure to the drug. Animal reproduction studies have not been conducted with pancrelipase.

The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a 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 2 to 4% and 15 to 20%, respectively.

8. 2 Lactation

Risk Summary

There are no data on the presence of pancrelipase in either human or animal milk, the effects on the breastfed infant or the effects on milk production. Pancrelipase is minimally absorbed systemically following oral administration, therefore maternal use is not expected to result in clinically relevant exposure of breastfed infants to the drug. The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for ZENPEP and any potential adverse effects on the breastfed infant from ZENPEP or from the underlying maternal conditions.

8.4 Pediatric Use

The short-term safety and effectiveness of ZENPEP were assessed in 2 clinical studies in pediatric patients, ages 1 to 17 years, with EPI due to CF.

Study 1 was a randomized, double-blind, placebo-controlled, crossover study in 34 patients 26 of whom were children, including 8 children aged 7 to 11 years, and 18 adolescents aged 12 to 17 years. The safety and efficacy in pediatric patients in this study were similar to adult patients [see Adverse Reactions ( 6.1) and Clinical S tudies ( 14)] .

Study 2 was an open-label, single arm study in 19 patients, ages 1 to 6 years, with EPI due to CF. When patient regimen was switched from their usual PEP regimen to ZENPEP at similar doses, patients showed similar control of their clinical symptoms.

The safety and efficacy of pancreatic enzyme products with different formulations of pancrelipase consisting of the same active ingredient (lipases, proteases, and amylases) for treatment of children with exocrine pancreatic insufficiency due to cystic fibrosis has been described in the medical literature and through clinical experience.

Dosing of pediatric patients should be in accordance with recommended guidance from the Cystic Fibrosis Foundation Consensus Conferences [see Dosage and Administration ( 2.1)] . Doses of other pancreatic enzyme products exceeding 6,000 lipase units/kg of body weight per meal have been associated with fibrosing colonopathy and colonic strictures in children less than 12 years of age [see Warnings and Precautions ( 5.1)] .

8.5 Geriatric Use

Clinical studies of ZENPEP did not include sufficient numbers of subjects aged 65 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.

10 OVERDOSAGE

In Study 1, a 10 year-old patient was administered a dose of 10,856 lipase units per kg body weight of ZENPEP for a period of one day. The patient did not experience any adverse events as a result of the dose increase, nor did this patient experience any adverse events during a 44-day follow-up period. No abnormalities from analyses of safety labs (chemistry, hematology, urinalysis or uric acid) were noted.

Chronic high doses of pancreatic enzyme products have been associated with fibrosing colonopathy and colonic strictures [see Dosage and Administration ( 2.1) and Warnings and Precautions ( 5.1)]. High doses of pancreatic enzyme products have been associated with hyperuricosuria and hyperuricemia, and should be used with caution in patients with a history of hyperuricemia, gout, or renal impairment [see Warnings and Precautions ( 5.3)].

11 DESCRIPTION

ZENPEP is a pancreatic enzyme preparation consisting of pancrelipase, an extract derived from porcine pancreatic glands. Pancrelipase contains multiple enzyme classes, including porcine-derived lipases, proteases, and amylases.

Pancrelipase is a cream-colored powder. It is miscible in water and practically insoluble or insoluble in alcohol and ether.

Each capsule for oral administration contains enteric-coated beads (1. 8-1.9mm for 3,000 and 5,000 USP units of lipase, 2. 2-2.5mm for 10,000, 15,000, 20,000, 25,000, and 40,000 USP units of lipase).

The active ingredient evaluated in clinical trials is lipase. ZENPEP is dosed by lipase units.

Other active ingredients include protease and amylase.

Inactive ingredients in ZENPEP include colloidal silicon dioxide, croscarmellose sodium, hydrogenated castor oil, hypromellose phthalate, magnesium stearate, microcrystalline cellulose, talc, and triethyl citrate and are contained in hypromellose capsules. The imprinting red ink on the 3,000 capsules strength contains, antifoam DC 1510, industrial methylated spirit, iron oxide red C.I. 77491-E172, n-butyl alcohol, shellac and soya lecithin.

3,000 USP units of lipase ; 10,000 USP units of protease; 14,000 USP units of amylase. Capsules have a white opaque cap and a white opaque body with imprint “APTALIS 3”. The shells contain carnauba wax or talc, carrageenan, hypromellose, potassium chloride, titanium oxide, and water.

The imprinting blue ink on the capsules strengths 5,000, 10,000, 15,000, 20,000, 25,000 and 40,000 contains dehydrated alcohol, FD&C Blue #2 aluminum lake C.I. 73015-E132, isopropyl alcohol, n-butyl alcohol, propylene glycol, shellac and strong ammonia solution.

5,000 USP units of lipase ; 17,000 USP units of protease; 24,000 USP units of amylase. Capsules have a white opaque cap and a white opaque body with imprint “APTALIS 5”. The shells contain carnauba wax or talc, carrageenan, hypromellose, potassium chloride, titanium oxide, and water.

10,000 USP units of lipase ; 32,000 USP units of protease; 42,000 USP units of amylase. Capsules have a yellow opaque cap and a white opaque body with imprint “APTALIS 10”. The shells contain carnauba wax or talc, carrageenan, hypromellose, potassium chloride, titanium oxide, water and yellow ferric oxide.

15,000 USP units of lipase ; 47,000 USP units of protease; 63,000 USP units of amylase. Capsules have a red opaque cap and a white opaque body with imprint “APTALIS 15”. The shells contain carnauba wax or talc, carrageenan, hypromellose, potassium chloride, red ferric oxide, titanium oxide, and water.

20,000 USP units of lipase ; 63,000 USP units of protease; 84,000 USP units of amylase. Capsules have a green opaque cap and a white opaque body with imprint “APTALIS 20”. The shells contain carnauba wax or talc, carrageenan, FD&C Blue #2, hypromellose, potassium chloride, titanium oxide, water, and yellow ferric oxide.

25,000 USP units of lipase ; 79,000 USP units of protease; 105,000 USP units of amylase. Capsules have a blue opaque cap and a white opaque body with imprint “APTALIS 25”. The shells contain carnauba wax or talc, carrageenan, FD&C Blue #2, hypromellose, potassium chloride, titanium oxide, and water.

40,000 USP units of lipase; 126,000 USP units of protease; 168,000 USP units of amylase. Capsules have a orange opaque cap and white opaque body, printed with “APTALIS 40”. The shells contain FD&C Yellow #6, hypromellose , titanium oxide and water.

12 CLINICAL PHARMACOLOGY

12.1 Mechanism of Action

The pancreatic enzymes in ZENPEP catalyze the hydrolysis of fats to monoglycerides, glycerol, and free fatty acids, protein into peptides and amino acids, and starch into dextrins and short chain sugars such as maltose and maltriose in the duodenum and proximal small intestine, thereby acting like digestive enzymes physiologically secreted by the pancreas.

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