Octreotide

INDICATIONS AND USAGE Octreotide acetate injection is a somatostatin analogue indicated: • Acromegaly : To reduce blood levels of growth hormone (GH) and insulin growth factor-1 (IGF-1; somatomedin C) in acromegaly patients who have had inadequate response to or cannot be treated with surgical resection, pituitary irradiation, and bromocriptine mesylate at maximally tolerated doses. ( 1.1 ) • Carcinoid Tumors : For the symptomatic treatment of patients with metastatic carcinoid tumors where it suppresses or inhibits the severe diarrhea and flushing episodes associated with the disease. ( 1.2 ) • Vasoactive Intestinal Peptide Tumors (VIPomas) : For the treatment of profuse watery diarrhea associated with VIP-secreting tumors. ( 1.3 ) Limitations of Use Improvement in clinical signs and symptoms, or reduction in tumor size or rate of growth, were not shown in clinical trials performed with octreotide acetate injection; these trials were not optimally designed to detect such effects. ( 1.4 ) 1.1 Acromegaly Octreotide acetate injection is indicated to reduce blood levels of growth hormone (GH) and insulin growth factor-1 (IGF-1; somatomedin C) in acromegaly patients who have had inadequate response to or cannot be treated with surgical resection, pituitary irradiation, and bromocriptine mesylate at maximally tolerated doses. 1.2 Carcinoid Tumors Octreotide acetate injection is indicated for treatment of severe diarrhea and flushing episodes associated with metastatic carcinoid tumors. 1.3 Vasoactive Intestinal Peptide Tumors Octreotide acetate injection is indicated for the treatment of the profuse watery diarrhea associated with vasoactive intestinal peptide tumors (VIPomas)-secreting tumors. 1.4 Important Limitations of Use Improvement in clinical signs and symptoms, or reduction in tumor size or rate of growth, were not shown in clinical trials performed with octreotide acetate injection; these trials were not optimally designed to detect such effects.

DOSAGE AND ADMINISTRATION • Octreotide acetate injection may be administered subcutaneously or intravenously. ( 2.1 ) • Acromegaly : Recommended initial octreotide acetate injection dosage is 50 mcg three times daily during the initial 2 weeks of therapy. Maintenance dose 100 mcg to 500 mcg three times daily. ( 2.2 ) • Carcinoid Tumors : Recommended dosage range of 100 mcg to 600 mcg daily in two to four divided doses during the initial 2 weeks of therapy. ( 2.3 ) • VIPomas : Recommended dosage range of 200 mcg to 300 mcg daily in two to four divided doses during the initial 2 weeks of therapy. ( 2.4 ) 2.1 Dosage and Administration Overview • Octreotide acetate injection may be administered subcutaneously or intravenously. Pain with subcutaneous administration may be reduced by using the smallest volume that will deliver the desired dose. Sites should be rotated in a systematic manner. The needle shield of the prefilled syringes may contain natural rubber latex which may cause allergic reactions in sensitive individuals. • Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration. Do not use if particulates and/or discoloration are observed. Octreotide acetate injection is not compatible in Total Parenteral Nutrition solutions because of the formation of a glycosyl octreotide conjugate which may decrease the efficacy of the product. • Octreotide acetate injection may be diluted in volumes of 50 mL to 200 mL and infused intravenously over 15 to 30 minutes or administered by intravenous (IV) push over 3 minutes. In emergency situations (e.g., carcinoid crisis), it may be given by rapid bolus. Discard unused portion. • Assess total and/or free T4 levels at baseline and periodically during chronic octreotide acetate injection therapy. 2.2 Recommended Dosage and Monitoring for Acromegaly The recommended initial dosage of octreotide acetate injection is 50 mcg three times daily to be administered subcutaneously. Increase octreotide acetate injection dose based upon GH or IGF-1 levels. The goal is to achieve GH levels less than 5 ng/mL or IGF-1 levels within normal range. Monitor GH or IGF-1 every two weeks after initiating octreotide acetate injection therapy or with dosage change, and to guide titration. The most common dosage is 100 mcg three times daily, but some patients require up to 500 mcg three times daily for maximum effectiveness. Doses greater than 300 mcg/day seldom result in additional biochemical benefit, and if an increase in dose fails to provide additional benefit, the dose should be reduced. Octreotide acetate injection should be withdrawn yearly for approximately 4 weeks from patients who have received irradiation to assess disease activity. If GH or IGF-1 levels increase and signs and symptoms recur, octreotide acetate injection therapy may be resumed. 2.3 Recommended Dosage and Monitoring for Carcinoid Tumors The recommended daily dosage of octreotide acetate injection during the first 2 weeks of therapy ranges from 100 to 600 mcg/day in two to four divided doses given subcutaneously (mean daily dosage is 300 mcg). In the clinical studies, the median daily maintenance dosage was approximately 450 mcg, but clinical and biochemical benefits were obtained in some patients with as little as 50 mcg, while others required doses up to 1500 mcg/day. However, experience with doses above 750 mcg/day is limited. Measurement of urinary 5-hydroxyindole acetic acid, plasma serotonin, plasma Substance P may be useful in monitoring the progress of therapy. 2.4 Recommended Dosage and Monitoring for Vasoactive Intestinal Peptide Tumors Daily dosages of 200 mcg to 300 mcg in two to four divided doses given subcutaneously are recommended during the initial 2 weeks of therapy (range, 150 mcg to 750 mcg) to control symptoms of the disease. On an individual basis, dosage may be adjusted to achieve a therapeutic response, but usually doses above 450 mcg/day are not required. Measurement of Plasma vasoactive intestinal peptide (VIP) may be useful in monitoring the progress of therapy.

WARNINGS AND PRECAUTIONS • Cardiac Function Abnormalities : Increased risk for higher degree of atrioventricular blocks. Consider cardiac monitoring in patients receiving Octreotide acetate injection intravenously. Bradycardia, arrhythmias, or conduction abnormalities may occur. Use with caution in at-risk patients. Dosage adjustment of cardiac medications may be necessary. ( 5.1 ) • Cholelithiasis and Complications of Cholelithiasis : Monitor periodically. Discontinue if complications of cholelithiasis are suspected. ( 5.2 ) • Glucose Metabolism : Hypoglycemia or hyperglycemia may occur. Glucose monitoring is recommended and anti-diabetic treatment may need adjustment. ( 5.3 ) • Thyroid Function : Hypothyroidism may occur. Monitor thyroid levels periodically. ( 5.4 ) • Steatorrhea and Malabsorption of Dietary Fats: New onset steatorrhea, stool discoloration, loose stools, abdominal bloating, and weight loss may occur. If new occurrence or worsening of these symptoms are reported, evaluate for potential pancreatic exocrine insufficiency. ( 5.5 ) 5.1 Cardiac Function Abnormalities Complete Atrioventricular Block Patients who receive octreotide acetate injection intravenously may be at increased risk for higher degree atrioventricular blocks. In postmarketing reports, complete atrioventricular block was reported in patients receiving IV octreotide acetate injection during surgical procedures. In the majority of patients, octreotide acetate injection was given at higher than recommended doses and/or as a continuous IV infusion. The safety of continuous IV infusion has not been established in patients receiving octreotide acetate injection for the approved indications. Consider cardiac monitoring in patients receiving octreotide acetate injection intravenously. Other Cardiac Conduction Abnormalities Other cardiac conduction abnormalities have occurred during treatment with octreotide acetate injection. In acromegalic patients, bradycardia (< 50 bpm) developed in 25%; conduction abnormalities occurred in 10% and arrhythmias occurred in 9% of patients during octreotide acetate injection therapy [see Adverse Reactions (6) ] . Other electrocardiogram (ECG) changes observed included QT prolongation, axis shifts, early repolarization, low voltage, R/S transition, and early R-wave progression. These ECG changes are not uncommon in acromegalic patients. Dose adjustments in drugs such as beta-blockers that have bradycardia effects may be necessary. In one acromegalic patient with severe congestive heart failure (CHF), initiation of octreotide acetate injection therapy resulted in worsening of CHF with improvement when drug was discontinued. Confirmation of a drug effect was obtained with a positive rechallenge. 5.2 Cholelithiasis and Complications of Cholelithiasis Octreotide acetate injection may inhibit gallbladder contractility and decrease bile secretion, which may lead to gallbladder abnormalities or sludge. Acute cholecystitis, ascending cholangitis, biliary obstruction, cholestatic hepatitis, or pancreatitis have been reported with octreotide acetate injection therapy. In clinical trials (primarily patients with acromegaly or psoriasis), the incidence of biliary tract abnormalities was 63% (27% gallstones, 24% sludge without stones, 12% biliary duct dilatation). The incidence of stones or sludge in patients who received octreotide acetate injection for 12 months or longer was 52%. Less than 2% of patients treated with octreotide acetate injection for 1 month or less developed gallstones. One patient developed ascending cholangitis during octreotide acetate injection therapy and died. If complications of cholelithiasis are suspected, discontinue octreotide acetate injection and treat appropriately. 5.3 Hyperglycemia and Hypoglycemia Octreotide acetate injection alters the balance between the counter-regulatory hormones, insulin, glucagon and GH, which may result in hypoglycemia or hyperglycemia. The hypoglycemia or hyperglycemia which occurs during octreotide acetate injection therapy is usually mild but may result in overt diabetes mellitus or necessitate dose changes in insulin or other anti-diabetic agents. Hypoglycemia and hyperglycemia occurred on octreotide acetate injection in 3% and 16% of acromegalic patients, respectively [see Adverse Reactions (6) ] . Severe hyperglycemia, subsequent pneumonia, and death following initiation of octreotide acetate injection therapy was reported in one patient with no history of hyperglycemia. Monitor glucose levels during octreotide acetate injection therapy. Adjust dosing of insulin or other anti-diabetic therapy accordingly. 5.4 Thyroid Function Abnormalities Octreotide suppresses secretion of thyroid stimulating hormone (TSH), which may result in hypothyroidism. Baseline and periodic assessment of thyroid function (TSH, total, and/or free T4) is recommended during chronic therapy [see Adverse Reactions (6) ] . 5.5 Steatorrhea and Malabsorption of Dietary Fats New onset steatorrhea, stool discoloration and loose stools have been reported in patients receiving somatostatin analogs, including octreotide acetate injection. Somatostatin analogs reversibly inhibit secretion of pancreatic enzymes and bile acids, which may result in malabsorption of dietary fats and subsequent symptoms of steatorrhea, loose stools, abdominal bloating, and weight loss. If new occurrence or worsening of these symptoms are reported in patients receiving octreotide acetate injection, evaluate patients for potential pancreatic exocrine insufficiency and manage accordingly . 5.6 Changes in Vitamin B12 Levels Depressed vitamin B12 levels and abnormal Schilling’s tests have been observed in some patients receiving octreotide acetate injection therapy, and monitoring of vitamin B12 levels is recommended during octreotide acetate injection therapy.

CONTRAINDICATIONS Hypersensitivity to octreotide or any of the components of MYCAPSSA. Anaphylactoid reactions, including anaphylactic shock, have been reported in patients receiving octreotide [see Adverse Reactions (‎6.3) ]. Hypersensitivity to octreotide or any of the components of MYCAPSSA.

DRUG INTERACTIONS Proton Pump Inhibitors, H2-receptor Antagonists, or Antacids: may decrease bioavailability of MYCAPSSA and the MYCAPSSA dose may need to be increased (‎ 7 ). Cyclosporine : may have decreased bioavailability and require dose adjustment ( 7 ). Insulin and Antidiabetic Drugs: patients receiving insulin or antidiabetic drugs agents may require dose adjustment (‎ 7 ). Digoxin: exposure may be decreased and assessment of clinical response to digoxin should be performed (‎ 7 ). Lisinopril: bioavailability may be increased, monitor patient's blood pressure and adjust dose of lisinopril if needed (‎ 7 ). Levonorgestrel: counsel women to use an alternative non-hormonal method of contraception or a back-up method when MYCAPSSA is used with combined oral contraceptives (‎ 7 ). Bromocriptine: dose adjustment of bromocriptine may be necessary (‎ 7 ). Beta Blocker and Calcium Channel Blockers : dose adjustment of beta blockers or calcium channel blockers may be necessary (‎ 7 ). Drugs Metabolized by CYP 450 Enzymes: concomitant use with other drugs mainly metabolized by CYP3A4 that have a narrow therapeutic index (e.g., quinidine) should be used with caution and increased monitoring may be required (‎ 7 ). 7.1 Effects of Other Drugs on MYCAPSSA Proton Pump Inhibitors, H2-receptor Antagonists, or Antacids Clinical Impact: Concomitant administration of MYCAPSSA with esomeprazole resulted in a decrease in the bioavailability for MYCAPSSA [ See Clinical Pharmacology (‎12.3) ] . Drugs that alter the pH of the upper GI tract (e.g., other proton pump inhibitors (PPIs), H2-receptor antagonists, and antacids) may alter the absorption of MYCAPSSA and lead to a reduction in bioavailability. Intervention: Co-administration of MYCAPSSA with PPIs, H2-blockers, or antacids may require increased doses of MYCAPSSA. 7.2 Effects of MYCAPSSA on Other Drugs Cyclosporine Clinical Impact: Concomitant administration of MYCAPSSA with cyclosporine resulted in a decrease in cyclosporine bioavailability [see Clinical Pharmacology (‎12.3) ]. Intervention: Adjustment of cyclosporine dose to maintain therapeutic levels may be necessitated. Insulin and Antidiabetic Drugs Clinical Impact: MYCAPSSA inhibits the secretion of insulin and glucagon. Intervention: Monitor blood glucose levels in diabetic patients upon MYCAPSSA initiation and subsequent dose adjustment. Patients receiving insulin or antidiabetic drugs agents may require dose adjustment of these therapeutic agents. Digoxin Clinical Impact: Concomitant administration of MYCAPSSA with digoxin resulted in a decrease in digoxin peak exposure [see Clinical Pharmacology (‎12.3) ]. Intervention: Digoxin has a narrow therapeutic ratio and careful assessment of clinical response should be performed when digoxin is concomitantly administered with MYCAPSSA. Lisinopril Clinical Impact: Concomitant administration of MYCAPSSA increases lisinopril bioavailability [see Clinical Pharmacology (‎12.3) ] . Intervention: Monitor patient's blood pressure and adjust the dosage of lisinopril if needed. Levonorgestrel Clinical Impact: Concomitant administration of MYCAPSSA with levonorgestrel decreases levonorgestrel bioavailability [see Clinical Pharmacology (‎12.3) ] . Intervention: Decreased bioavailability may potentially diminish the effectiveness of combined oral contraceptives (COCs) or increase breakthrough bleeding. Counsel women to use an alternative non-hormonal method of contraception or a back-up method when MYCAPSSA is used with COCs. Bromocriptine Clinical Impact: Concomitant administration of MYCAPSSA with bromocriptine may increase the systemic exposure of bromocriptine [see Clinical Pharmacology (‎12.3) ]. Intervention: Dose adjustment of bromocriptine may be necessary. Beta Blocker and Calcium Channel Blockers Clinical Impact: MYCAPSSA may cause bradycardia in acromegaly patients. Intervention: Patients receiving beta blockers or calcium channel blockers may require dose adjustments of these therapeutic agents. Drugs Metabolized by CYP 450 Enzymes Clinical Impact: Limited published data indicate that somatostatin analogs including MYCAPSSA may decrease the metabolic clearance of compounds known to be metabolized by cytochrome P450 enzymes, which may be due to the suppression of GH. Intervention: Concomitant use with other drugs mainly metabolized by CYP3A4 that have a narrow therapeutic index (e.g., quinidine) should be used with caution and increased monitoring may be required.

ADVERSE REACTIONS The following important adverse reactions are described below and elsewhere in the labeling: Cholelithiasis and Complications of Cholelithiasis [see Warnings and Precautions (‎5.1) ] Hyperglycemia and Hypoglycemia [see Warnings and Precautions (‎5.2) ] Thyroid Function Abnormalities [see Warnings and Precautions (‎5.3) ] Cardiac Function Abnormalities [see Warnings and Precautions (‎5.4) ] Steatorrhea and Malabsorption of Dieatary Fats [see Warnings and Precautions (‎5.5) ] Changes in Vitamin B 12 Levels [ see Warnings and Precautions (5.6) ] Most common adverse reactions (incidence >10 %) are nausea, diarrhea, headache, arthralgia, asthenia, hyperhidrosis, peripheral swelling, blood glucose increased, vomiting, abdominal discomfort, dyspepsia, sinusitis, osteoarthritis (‎ 6.1 ). To report SUSPECTED ADVERSE REACTIONS, contact Chiesi Farmaceutici S.p.A. at 1-888-661-9260 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch 6.1 Clinical Studies Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. MYCAPSSA has been evaluated in patients with acromegaly in a placebo-controlled study [see Clinical Studies (‎14) ] and an open-label baseline-controlled study . The data reflect exposure of 183 patients to MYCAPSSA for a mean duration of 29 weeks. In the overall study population, 56% were female and the average age of patients was 54.3 years. Adverse reactions occurring ≥ 5% and greater than placebo for the placebo-controlled study are presented in Table 1 and adverse reactions occurring ≥ 5% in the open-label study are presented in Table 2. Table 1: Adverse Reactions Occurring ≥ 5% and Greater than Placebo in a Placebo-Controlled Study with MYCAPSSA in Acromegaly Patients MYCAPSSA % (N=28) PLACEBO % (N=28) Diarrhea 29 21 Nausea 21 11 Blood glucose increased Includes blood glucose increased, hyperglycemia and glycosylated hemoglobin increased 14 7 Vomiting 14 0 Abdominal discomfort 14 11 Dyspepsia 11 4 Sinusitis 11 0 Osteoarthritis 11 0 Urinary tract infection 7 4 Pain 7 0 Large intestine polyp 7 0 Cholelithiasis 7 4 Table 2: Adverse Reactions Occurring ≥ 5% in an Open-Label Study with MYCAPSSA in Acromegaly Patients MYCAPSSA % (N=155) Headache 33 Nausea 30 Arthralgia 26 Asthenia 22 Hyperhidrosis 21 Diarrhea 18 Peripheral swelling 16 Dyspepsia 8 Abdominal pain upper 8 Abdominal distension 7 Nasopharyngitis 7 Influenza 7 Blood glucose increased Includes blood glucose increased, hyperglycemia and impaired fasting glucose 6 Vomiting 6 Flatulence 6 Back pain 6 Abdominal pain 5 Dizziness 5 Fatigue 5 Upper respiratory tract infection 5 Hypertension 5 Other Adverse Reactions Gallbladder Abnormalities In the placebo-controlled study, in patients treated with MYCAPSSA, acute cholecystitis occurred in 4% of patients. In the open-label study, cholelithiasis occurred in 4.5% of patients and bile duct obstruction, bile duct stone, acute cholecystitis and jaundice occurred in 1% of patients each. Hypoglycemia/Hyperglycemia In the placebo-controlled study, 18% of patients treated with MYCAPSSA and 4% of patients treated with placebo developed at least one glucose value above the upper normal limit. All patients with abnormal glucose values were asymptomatic. Asymptomatic hypoglycemia was reported in 4% of patients. In the open-label study 16% of patients developed a glucose value above the upper limit of normal. Asymptomatic hypoglycemia was reported in 4% and symptomatic hypoglycemia was reported in 1% of patients. Diabetes was reported in 1% of patients. Hypothyroidism In the open-label study, hypothyroidism, increased TSH, or decreased free T4 were reported in 1% of patients. Cardiac In the open-label study, bradycardia was reported in 2%, conduction abnormalities in 1%, and arrhythmias/tachycardia in 2% of patients. Gastrointestinal Gastrointestinal symptoms were the most commonly reported adverse reactions with MYCAPSSA. In the placebo-controlled study, gastrointestinal adverse reactions were reported in 68% of patients treated with MYCAPSSA. These adverse reactions were diarrhea, nausea, vomiting, abdominal discomfort, dyspepsia, large intestinal polyp, abdominal pain, constipation, and flatulence. The adverse reactions were mild to moderate, occurred mostly during the initial 3 months of treatment, and resolved on treatment within a median duration of 8 days. In the open-label study, gastrointestinal adverse reactions were reported in 57% of patients. Gastrointestinal adverse reactions occurring in ≥ 1% of patients were nausea, diarrhea, dyspepsia, abdominal pain, abdominal distention, vomiting, flatulence, constipation, gastroesophageal reflux disease, abdominal discomfort, frequent bowel movement, gastritis, hemorrhoids, dry mouth, and gastrointestinal motility disorder. Large intestinal polyp was reported in 1 patient. The adverse reactions were mostly mild to moderate, occurred during the initial 2 months of treatment, and resolved on treatment within a median of 13 days. Ten patients discontinued treatment due to gastrointestinal adverse reactions. 6.2 Immunogenicity As with all therapeutic peptides, there is potential for immunogenicity. The detection of antibody formation is highly dependent on the sensitivity and specificity of the assay. Additionally, the observed incidence of antibody (including neutralizing antibody) positivity in an assay may be influenced by several factors including assay methodology, sample handling, timing of sample collection, concomitant medications, and underlying disease. For these reasons, comparison of the incidence of antibodies in the studies described below with the incidence of antibodies in other studies or to other octreotide acetate products may be misleading. No antibodies to the octreotide peptide from MYCAPSSA were detected in 149 patients assessed in the open label study throughout 13 months of treatment. 6.3 Postmarketing Experience The following adverse reactions have been identified during the post-approval use of octreotide acetate. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Blood and lymphatic: pancytopenia, thrombocytopenia Cardiac: myocardial infarction, cardiac arrest, atrial fibrillation Ear and labyrinth: deafness Endocrine: diabetes insipidus, adrenal insufficiency in patients 18 months of age and under, pituitary apoplexy Eye: glaucoma, visual field defect, scotoma, retinal vein thrombosis Gastrointestinal: intestinal obstruction, peptic/gastric ulcer, abdomen enlarged General and administration site: generalized edema, facial edema Hepatobiliary: gallbladder polyp, fatty liver, hepatitis Immune: anaphylactoid reactions including anaphylactic shock Infections and infestations: appendicitis Laboratory abnormalities: increased liver enzymes, CK increased, creatinine increased Metabolism and nutrition: diabetes mellitus Musculoskeletal: arthritis, joint effusion, Raynaud's syndrome Nervous System: convulsions, aneurysm, intracranial hemorrhage, hemiparesis, paresis, suicide attempt, paranoia, migraines, Bell's palsy, aphasia Renal and urinary: renal failure, renal insufficiency Reproductive and breast: gynecomastia, galactorrhea, libido decrease, breast carcinoma Respiratory: status asthmaticus, pulmonary hypertension, pulmonary nodule, pneumothorax aggravated Skin and subcutaneous tissue: urticaria, cellulitis, petechiae Vascular: orthostatic hypotension, hematuria, gastrointestinal hemorrhage, arterial thrombosis of the arm

Mechanism of Action BYNFEZIA PEN (octreotide acetate) exerts pharmacologic actions similar to the natural hormone, somatostatin. It is an even more potent inhibitor of GH, glucagon, and insulin than somatostatin. Like somatostatin, it also suppresses luteinizing hormone (LH) response to gonadotropin releasing hormone (GnRH), decreases splanchnic blood flow, and inhibits release of serotonin, gastrin, VIP, secretin, motilin, and pancreatic polypeptide. By virtue of these pharmacological actions, octreotide has been used to treat the symptoms associated with metastatic carcinoid tumors (flushing and diarrhea), and VIP secreting adenomas (watery diarrhea).