Safety Study of AMG 557 in Subjects With Subacute Cutaneous Lupus Erythematosus

AMG 557 (210 mg) or (140 mg ) will be administered as subcutaneous injections in the anterior abdomen of the subjects. Twelve subjects will be randomized to receive AMG 557. Beginning on Day 1, subjects will receive either 210 mg AMG 557 or 140 mg AMG 557 once weekly for 3 weeks on Day 1, Day 8, and Day 15 and following with 6 additional doses of AMG 557 every other week on Day 29, Day 43, Day 57, Day 71, Day 85, and Day 99. Subjects will be followed out to Day 253 for safety, efficacy, pharmacokinetic (PK) and pharmacodynamic (PD) assessments.

AMG 557 Placebo (210 mg) or (140 mg )will be administered as subcutaneous injections in the anterior abdomen of the subjects. Twelve subjects will be randomized to receive placebo. Beginning on Day 1, subjects will receive placebo once weekly for 3 weeks on Day 1, Day 8, and Day 15 and following with 6 additional doses of placebo every other week on Day 29, Day 43, Day 57, Day 71, Day 85, and Day 99. Subjects will be followed out to Day 253 for safety, efficacy, pharmacokinetic (PK) and pharmacodynamic (PD) assessments.