Degarelix

Renal Impairment No pharmacokinetic studies in renally impaired patients have been conducted. At least 20-30% of a given dose of degarelix is excreted unchanged in the urine. A population pharmacokinetic analysis of data from the randomized study demonstrated that there is no significant effect of mild renal impairment [creatinine clearance (CrCL) 50-80 mL/min] on either the degarelix concentration or testosterone concentration.

Data on patients with moderate or severe renal impairment is limited and therefore degarelix should be used with caution in patients with CrCL < 50 mL/min.

Hepatic Impairment Patients with hepatic impairment were excluded from the randomized trial. A single dose of 1 mg degarelix administered as an intravenous infusion over 1 hour was studied in 16 non-prostate cancer patients with either mild (Child Pugh A) or moderate (Child Pugh B) hepatic impairment. Compared to non-prostate cancer patients with normal liver function, the exposure of degarelix decreased by 10% and 18% in patients with mild and moderate hepatic impairment, respectively.

Therefore, dose adjustment is not necessary in patients with mild or moderate hepatic impairment. However, since hepatic impairment can lower degarelix exposure, it is recommended that in patients with hepatic impairment testosterone concentrations should be monitored on a monthly basis until medical castration is achieved.

Once medical castration is achieved, an every-other-month testosterone monitoring approach could be considered. Patients with severe hepatic dysfunction have not been studied and caution is therefore warranted in this group.

Reconstitution and Administration Instructions FIRMAGON is to be administered by a healthcare professional only . Before administering FIRMAGON read the Instructions for reconstitution and administration carefully. As with other drugs administered by subcutaneous injection, the injection site should vary periodically. Injections should be given only in areas of the abdomen that will not be exposed to pressure, e.g., not close to waistband or belt nor close to the ribs.

FIRMAGON is supplied as a powder to be reconstituted with Sterile Water for Injection, USP. Starting dose (240 mg): Two single-dose vials each delivering 120 mg of degarelix in a white to off-white lyophilized powder for reconstitution supplied with diluent in two prefilled syringes. Each vial is to be reconstituted with a prefilled syringe containing 3 mL of Sterile Water for Injection. 3 mL is withdrawn to deliver 120 mg degarelix at a concentration of 40 mg/mL.

Maintenance dose (80 mg): One single-dose vial delivering 80 mg of degarelix in a white to off-white lyophilized powder for reconstitution supplied with diluent in one prefilled syringe. Each vial is to be reconstituted with a prefilled syringe containing 4.2 mL of Sterile Water for Injection. 4 mL is withdrawn to deliver 80 mg degarelix at a concentration of 20 mg/mL.

Follow the instructions for reconstitution closely and read the complete instructions before performing the subcutaneous injection. Reconstituted drug must be administered within one hour after addition of Sterile Water for Injection, USP. Do not shake the vials. Follow aseptic technique. FIRMAGON 240 mg Starting Dose Kit contains: 2 vials containing the 120 mg FIRMAGON powder (a) 2 syringes containing Sterile Water for Injection, USP (b) 2 vial adapters (c) 2 25 gauge × 1 inch injection needles (d) 2 plunger rods (e) FIRMAGON 80 mg Maintenance Dose Kit contains: 1 vial containing the 80 mg FIRMAGON powder (f) 1 syringe containing Sterile Water for Injection, USP (g) 1 vial adapter (h) 1 25 gauge × 1 inch injection needle (i) 1 plunger rod (j) In addition the healthcare professional will need: gloves (k) alcohol pads (l) a clean, flat surface (m) to work on, like a table a sharps disposal container (n) for throwing away your used needles and syringes.

See " Disposing used needles and syringes " at the end of these instructions. The drug product must be prepared using the following instructions: NOTE: The mixing process must be repeated for the two injections of the Starting Dose prior to injecting the product into the patient's abdomen. [See table below.] Disposing used needles and syringes Put used alcohol swabs, needles and syringes in an FDA-cleared sharps disposal container right away after use.

Do not throw away loose needles and syringes in the trash. For more information about safe sharps disposal, go to the FDA's website at: http://www.fda.gov/safesharpsdisposal. Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure