Gozetotide

12.1 Mechanism of Action Gallium Ga 68 gozetotide binds to PSMA. It binds to cells that express PSMA, including malignant prostate cancer cells, which usually overexpress PSMA. Gallium-68 is a β+ emitting radionuclide that allows PET.

1 INDICATIONS AND USAGE LOCAMETZ, after radiolabeling with gallium-68, is indicated for positron emission tomography (PET) of prostate-specific membrane antigen (PSMA)-positive lesions in men with prostate cancer: with suspected metastasis who are candidates for initial definitive therapy. with suspected recurrence based on elevated serum prostate-specific antigen (PSA) level. for selection of patients who are indicated for PSMA-directed therapy as described in the prescribing information of the therapeutic products. LOCAMETZ, after radiolabeling with gallium-68, is a radioactive diagnostic agent indicated for positron emission tomography (PET) of prostate-specific membrane antigen (PSMA)-positive lesions in men with prostate cancer: with suspected metastasis who are candidates for initial definitive therapy with suspected recurrence based on elevated serum prostate-specific antigen (PSA) level for selection of patients who are indicated for PSMA-directed therapy as described in the prescribing information of the therapeutic products. ( 1 )

2 DOSAGE AND ADMINISTRATION Use appropriate radiation safety measures and aseptic precautions while handling and administering gallium Ga 68 gozetotide injection. ( 2.1 ) The recommended amount of radioactivity is 111 MBq to 259 MBq (3 mCi to 7 mCi). Administered as slow intravenous injection. ( 2.2 ) Advise patients to be well hydrated prior to the administration and to void immediately prior to and frequently after image acquisition. ( 2.3 ) A diuretic expected to act within the uptake time period may be administered at the time of radiotracer injection. ( 2.6 ) Acquire PET whole body images 50 minutes to 100 minutes after administration. ( 2.7 ) See the full prescribing information for detailed instructions on preparation, administration, imaging, and radiation dosimetry. ( 2 ) 2.1 Radiation Safety – Drug Handling After reconstitution and radiolabeling of LOCAMETZ, the vial contains gallium Ga 68 gozetotide injection. Handle the gallium Ga 68 gozetotide injection with appropriate safety measures to minimize radiation exposure [see Warnings and Precautions (5.2)] . Use waterproof gloves, effective radiation shielding, and other appropriate safety measures when preparing and handling gallium Ga 68 gozetotide injection. Radiopharmaceuticals should be used by or under the control of health care providers who are qualified by specific training and experience in the safe use and handling of radionuclides, and whose experience and training have been approved by the governmental agency authorized to license the use of radionuclides. 2.2 Recommended Dosage In adults, the recommended amount of radioactivity to be administered for PET is 111 MBq to 259 MBq (3 mCi to 7 mCi) by slow intravenous injection. 2.3 Patient Preparation Advise patients to be well hydrated prior to gallium Ga 68 gozetotide injection administration and to void immediately prior to and frequently during the first hours after image acquisition to reduce radiation exposure [see Warnings and Precautions (5.2)] . 2.4 Drug Preparation LOCAMETZ allows the direct preparation of gallium Ga 68 gozetotide injection with the eluate from one of the following generators (see below for specific instruction for use with each generator): Eckert & Ziegler GalliaPharm germanium-68/gallium-68 ( 68 Ge/ 68 Ga) generator IRE ELiT Galli Eo germanium-68/gallium-68 ( 68 Ge/ 68 Ga) generator The instructions for use provided by the germanium-68/gallium-68 generator manufacturer should also be followed. Prepare gallium Ga 68 gozetotide injection according to the following aseptic procedure: a. Use suitable shielding to reduce radiation exposure. b. Wear waterproof gloves. c. Flip the cap off the LOCAMETZ vial and swab the septum with an appropriate antiseptic, then allow the septum to dry. d. Pierce the LOCAMETZ vial septum with a sterile needle connected to a 0.2-micron sterile air venting filter to maintain atmospheric pressure within the vial during the reconstitution process. e. Place the LOCAMETZ vial in a lead shield container. f. Follow the generator specific procedures below. Schematic diagrams are provided in Figures 1 and 2. Preparation with Eckert & Ziegler GalliaPharm Generator 1) Connect the male luer of the outlet line of the generator to a sterile elution needle (size 21G to 23G). 2) Connect the LOCAMETZ vial directly to the outlet line of the generator by pushing the elution needle through the rubber septum. 3) Elute directly from the generator into the LOCAMETZ vial. 4) Perform the elution manually or by means of a pump according to the generator instructions for use. 5) Reconstitute the lyophilized powder with 5 mL of eluate. 6) At the end of the elution, disconnect the LOCAMETZ vial from the generator by removing the elution needle and the vent needle with the 0.2-micron sterile air venting filter from the rubber septum. Then, invert LOCAMETZ vial once and place it upright. 7) Incubate the LOCAMETZ vial upright between 20°C to 30°C (68°F to 86°F) for at least 5 minutes without agitation or stirring. 8) After 5 minutes, assay the vial containing the gallium Ga 68 gozetotide injection for total radioactivity using a dose calibrator, calculate the radioactivity concentration and record the result. 9) After radiolabeling, gallium Ga 68 gozetotide injection may be diluted with Sterile Water for Injection, USP or 0.9% Sodium Chloride Injection, USP up to a final volume of 10 mL. 10) Perform quality controls according to the recommended methods in order to check compliance with the specifications [see Dosage and Administration (2.5)] . 11) Store the LOCAMETZ vial containing the gallium Ga 68 gozetotide injection upright in a lead shield container below 30°C (86°F) until use. 12) After addition of gallium-68 chloride to the LOCAMETZ vial, use gallium Ga 68 gozetotide injection within 6 hours. Preparation with IRE ELiT Galli Eo Generator 1) Connect the male luer of the outlet line of the generator to a sterile elution needle (size 21G to 23G). 2) Connect the LO

6 ADVERSE REACTIONS The adverse reactions (incidence ≥ 0.5%) are fatigue, nausea, constipation, and vomiting. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Novartis Pharmaceuticals Corporation at 1-888-669-6682 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials 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. The safety of LOCAMETZ has been established based on three prospective studies of gallium Ga 68 gozetotide in patients with prostate cancer (i.e., Studies 1, 2, and 3). Adverse reactions from these studies are reported below. In Studies 1 and 2 using another formulation of gallium Ga 68 gozetotide injection, 960 patients received one dose of gallium Ga 68 gozetotide intravenously with the amount (mean ± SD) of radioactivity 188.7 ± 40.7 MBq (5.1 ± 1.1 mCi) [see Clinical Studies (14.1, 14.2)] . The most commonly reported adverse reactions were nausea, diarrhea and dizziness, occurring at a rate of < 1%. In a randomized, multicenter, open-label clinical study (NCT03511664, referred to as Study 3) in which gallium Ga 68 gozetotide was used to identify PSMA-positive patients on PET imaging to determine eligibility for PSMA-directed therapy, 1,003 patients with progressive metastatic castration-resistant prostate cancer (mCRPC) received one dose of gallium Ga 68 gozetotide intravenously with the amount of radioactivity 167.1 ± 23.1 MBq (4.52 ± 0.62 mCi). Patients were males with median age of 70 years (range, 40 to 94 years), were White (87%), Black or African American (7%), or Asian (2.4%), and had median baseline PSA levels of 74 ng/mL (range, 0 to 8995 ng/mL). Adverse reactions occurring at ≥ 0.5% in patients with metastatic prostate cancer who received gallium Ga 68 gozetotide injection in Study 3 are presented in Table 3. Table 3. Adverse Reactions (≥ 0.5%) in Patients with Metastatic Prostate Cancer Who Received Gallium Ga 68 Gozetotide Injection in Study 3 Adverse reactions Gallium Ga 68 Gozetotide Injection N = 1003 n (%) General disorders Fatigue 12 (1.2) Gastrointestinal disorders Nausea 8 (0.8) Constipation 5 (0.5) Vomiting 5 (0.5) Adverse reactions occurring at a rate of < 0.5% in the study were diarrhea, dry mouth, injection site reactions including injection site hematoma and injection site warmth, and chills.

7 DRUG INTERACTIONS Androgen Deprivation Therapy and Other Therapies Targeting the Androgen Pathway Androgen deprivation therapy (ADT) and other therapies targeting the androgen pathway, such as androgen receptor antagonists, can result in changes in uptake of gallium Ga 68 gozetotide in prostate cancer. The effect of these therapies on performance of LOCAMETZ PET has not been established.