Abaloparatide

1 INDICATIONS AND USAGE TYMLOS is a human parathyroid hormone related peptide [PTHrP(1-34)] analog indicated for the: Treatment of postmenopausal women with osteoporosis at high risk for fracture or patients who have failed or are intolerant to other available osteoporosis therapy. ( 1.1 ) Treatment to increase bone density in men with osteoporosis at high risk for fracture or patients who have failed or are intolerant to other available osteoporosis therapy. ( 1.2 ) 1.1 Treatment of Postmenopausal Women with Osteoporosis at High Risk for Fracture TYMLOS is indicated for the treatment of postmenopausal women with osteoporosis at high risk for fracture (defined as a history of osteoporotic fracture or multiple risk factors for fracture), or patients who have failed or are intolerant to other available osteoporosis therapy. In postmenopausal women with osteoporosis, TYMLOS reduces the risk of vertebral fractures and nonvertebral fractures. 1.2 Treatment to Increase Bone Density in Men with Osteoporosis at High Risk for Fracture TYMLOS is indicated to increase bone density in men with osteoporosis at high risk for fracture (defined as a history of osteoporotic fracture or multiple risk factors for fracture), or patients who have failed or are intolerant to other available osteoporosis therapy.

12.1 Mechanism of Action Abaloparatide is a PTHrP(1-34) analog which acts as an agonist at the PTH1 receptor (PTH1R). This results in activation of the cAMP signaling pathway in target cells. Once-daily administration of abaloparatide stimulates new bone formation on trabecular and cortical bone surfaces by stimulation of osteoblastic activity. In rats and monkeys, abaloparatide had an anabolic effect on bone, demonstrated by increases in BMD and bone mineral content (BMC) that correlated with increases in bone strength at vertebral and/or nonvertebral sites [see Nonclinical Toxicology ( 13.2 )] .

2 DOSAGE AND ADMINISTRATION Recommended dosage is 80 mcg subcutaneously once daily; patients should receive supplemental calcium and vitamin D if dietary intake is inadequate. ( 2.1 ) Administer as a subcutaneous injection into periumbilical region of abdomen. ( 2.2 ) Administer initially where the patient can sit or lie down in case symptoms of orthostatic hypotension occur. ( 2.2 , 5.2 ) 2.1 Recommended Dosage The recommended dosage of TYMLOS is 80 mcg administered subcutaneously once daily. Patients should receive supplemental calcium and vitamin D if dietary intake is inadequate. 2.2 Administration Instructions Administer TYMLOS as a subcutaneous injection into the periumbilical region of the abdomen. Rotate the site of the injection every day and administer at approximately the same time every day. Do not administer intravenously or intramuscularly. Administer the first several doses where the patient can sit or lie down if necessary, in case symptoms of orthostatic hypotension occur [see Warnings and Precautions ( 5.2 ) and Adverse Reactions ( 6.1 )] . Visually inspect TYMLOS for particulate matter and discoloration prior to administration. TYMLOS is a clear and colorless solution. Do not use if solid particles appear or if the solution is cloudy or colored. Provide appropriate training and instruction to patients and caregivers on the proper use of the TYMLOS pen. 2.3 Treatment Duration The safety and efficacy of TYMLOS have not been evaluated beyond 2 years of treatment. Use of the drug for more than 2 years during a patient's lifetime is not recommended.

6 ADVERSE REACTIONS The following adverse reactions are described in greater detail in other sections: Orthostatic Hypotension [see Warnings and Precautions ( 5.2 )] Hypercalcemia [see Warnings and Precautions ( 5.3 )] Hypercalciuria and Urolithiasis [see Warnings and Precautions ( 5.4 )] Osteoporosis in postmenopausal women: The most common adverse reactions (incidence ≥2%) are hypercalciuria, dizziness, nausea, headache, palpitations, fatigue, upper abdominal pain, and vertigo. ( 6.1 ) Osteoporosis in men: The most common adverse reactions (incidence ≥2%) are injection site erythema, dizziness, arthralgia, injection site swelling, injection site pain, contusion, nausea, diarrhea, abdominal distension, abdominal pain, and bone pain. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Radius Health, Inc. at 1-855-672-3487 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials Experience Because clinical studies are conducted under widely varying conditions, adverse reaction rates observed in the clinical studies of a drug cannot be directly compared to rates in the clinical studies of another drug and may not reflect the rates observed in practice. Adverse Reactions from Clinical Trial in Postmenopausal Women with Osteoporosis The safety of TYMLOS was evaluated in a randomized, multicenter, double-blind, placebo-controlled clinical trial in postmenopausal women with osteoporosis aged 49 to 86 years (mean age 69 years) who were randomized to receive 80 mcg of TYMLOS (N = 824) or placebo (N = 821), given subcutaneously once daily for 18 months [see Clinical Studies ( 14.1 )] . In this study, the incidence of all-cause mortality was 0.4% in the TYMLOS group and 0.6% in the placebo group. The incidence of serious adverse events was 10% in the TYMLOS group and 11% in the placebo group. The percentage of patients who discontinued study drug due to adverse events was 10% in the TYMLOS group and 6% in the placebo group. The most common adverse reactions leading to study drug discontinuation in the TYMLOS group were nausea (2%), dizziness (1%), headache (1%), and palpitations (1%). Table 1 shows the most common adverse reactions in the trial. These adverse reactions were generally not present at baseline, occurred more commonly with TYMLOS than with placebo, and occurred in at least 2% of the patients treated with TYMLOS. Table 1: Common Adverse Reactions Reported in Postmenopausal Women with Osteoporosis * * Adverse reactions reported in ≥2% of TYMLOS-treated patients. Preferred term TYMLOS (N=822) (%) Placebo (N=820) (%) Hypercalciuria 11 9 Dizziness 10 6 Nausea 8 3 Headache 8 6 Palpitations 5 0.4 Fatigue 3 2 Abdominal pain upper 3 2 Vertigo 2 2 Orthostatic Hypotension In the clinical trial of women with postmenopausal osteoporosis, the incidence of orthostatic blood pressure decline ≥20 mmHg systolic or ≥10 mmHg diastolic at 1 hour after the first injection was 4% in the TYMLOS group and 3% in the placebo group. At later time points the incidence was generally similar between the treatment groups. Adverse reactions of orthostatic hypotension were reported in 1% of patients receiving TYMLOS and 0.5% of patients receiving placebo. Dizziness was reported by more TYMLOS-treated patients (10%) compared to placebo (6%) [see Warnings and Precautions ( 5.2 )] . Tachycardia In women with postmenopausal osteoporosis, adverse reactions of tachycardia, including sinus tachycardia, were reported in 2% of patients receiving TYMLOS and 1% of patients in the placebo group. In 5 of the 13 patients receiving TYMLOS who experienced tachycardia, symptoms occurred within 1 hour of administration. TYMLOS has been associated with a dose-dependent increase in heart rate which developed within 15 minutes after injection and resolved in about 6 hours [see Clinical Pharmacology ( 12.2 )] . Injection Site Reactions During the first month of the trial, injection site reactions were assessed daily one-hour after injection. TYMLOS had a higher

5 WARNINGS AND PRECAUTIONS Osteosarcoma: Avoid use in patients with increased risk of osteosarcoma including patients with open epiphyses, metabolic bone diseases including Paget's disease, bone metastases or history of skeletal malignancies, prior external beam or implant radiation therapy involving the skeleton, and hereditary disorders predisposing to osteosarcoma. ( 5.1 ) Orthostatic Hypotension: Instruct patients to sit or lie down if symptoms develop after dose administration. ( 5.2 ) Hypercalcemia: Avoid use in patients with pre-existing hypercalcemia and those known to have an underlying hypercalcemic disorder, such as primary hyperparathyroidism. ( 5.3 ) Hypercalciuria and Urolithiasis: Monitor urine calcium if pre-existing hypercalciuria or active urolithiasis are suspected. ( 5.4 ) 5.1 Risk of Osteosarcoma Abaloparatide caused a dose-dependent increase in the incidence of osteosarcoma in male and female rats after subcutaneous administration at exposures 4 to 28 times the human exposure at the clinical dose of 80 mcg [see Nonclinical Toxicology ( 13.1 )] . It is unknown whether TYMLOS will cause osteosarcoma in humans. Osteosarcoma has been reported in patients treated with a PTH-analog in the post marketing setting; however, an increased risk of osteosarcoma has not been observed in observational studies in humans. There are limited data assessing the risk of osteosarcoma beyond 2 years of TYMLOS and/or use of a PTH-analog [see Dosage and Administration ( 2.3 ) and Nonclinical Toxicology ( 13.1 )] . Avoid TYMLOS use in patients with (these patients are at increased baseline risk of osteosarcoma): Open epiphyses (pediatric and young adult patients) (TYMLOS is not approved in pediatric patients) [see Use in Specific Populations ( 8.4 )] . Metabolic bone diseases other than osteoporosis, including Paget's disease of the bone. Bone metastases or a history of skeletal malignancies. Prior external beam or implant radiation therapy involving the skeleton. Hereditary disorders predisposing to osteosarcoma. 5.2 Orthostatic Hypotension Orthostatic hypotension may occur with TYMLOS, typically within 4 hours of injection. Associated symptoms may include dizziness, palpitations, tachycardia, or nausea, and may resolve by having the patient lie down. For the first several doses, TYMLOS should be administered where the patient can sit or lie down if necessary [see Adverse Reactions ( 6.1 )] . 5.3 Hypercalcemia TYMLOS may cause hypercalcemia. TYMLOS is not recommended in patients with pre-existing hypercalcemia or in patients who have an underlying hypercalcemic disorder, such as primary hyperparathyroidism, because of the possibility of exacerbating hypercalcemia [see Adverse Reactions ( 6.1 )] . 5.4 Hypercalciuria and Urolithiasis TYMLOS may cause hypercalciuria. It is unknown whether TYMLOS may exacerbate urolithiasis in patients with active or a history of urolithiasis. If active urolithiasis or pre-existing hypercalciuria is suspected, measurement of urinary calcium excretion should be considered [see Adverse Reactions ( 6.1 )] .

4 CONTRAINDICATIONS TYMLOS is contraindicated in patients with a history of systemic hypersensitivity to abaloparatide or to any component of the product formulation. Reactions have included anaphylaxis, dyspnea, and urticaria [see Adverse Reactions ( 6.2 )] . Known hypersensitivity to TYMLOS. ( 4 )

10 OVERDOSAGE In a clinical study, accidental overdose was reported in a patient who received 400 mcg in one day (5 times the recommended clinical dose); dosing was temporarily interrupted. The patient experienced asthenia, headache, nausea, and vertigo. Serum calcium was not assessed on the day of the overdose, but on the following day the patient's serum calcium was within the normal range. The effects of overdose may include hypercalcemia, nausea, vomiting, dizziness, tachycardia, orthostatic hypotension, and headache. Overdos age Management There is no specific antidote for TYMLOS. Treatment of suspected overdose should include discontinuation of TYMLOS, monitoring of serum calcium and phosphorus, and implementation of appropriate supportive measures, such as hydration. Based on the molecular weight, plasma protein binding and volume of distribution, abaloparatide is not expected to be dialyzable.