Cohort A: FX006 40 mg, Final Visit at Week 20 Cohort B: FX006 40 mg, Final Visit at Week 16 Cohort C: FX006 10 mg, Final Visit at Week 12 Cohort D: FX006 40 mg, Final Visit at Week 12 Cohort E: Triamcinolone acetonide immediate-release (TCA IR) 40 mg, Final Visit Week 12