- Group 1 and 2 patients: Use of systemic corticosteroids, fibrates, niacin, fish oil or other products containing omega-3 fatty acids within 6 weeks of dosing. Group 3 patients: unable to discontinue use of systemic corticosteroids at least 6 weeks prior to dosing ; use of niacin, fish oil, or other products containing omega-3 fatty acids unless on a stable well controlled dose for at least 30 days prior to screening that is not anticipated to change during the study period. Group 4 patients: unable to discontinue use of systemic corticosteroids at least 6 weeks prior to dosing; use of fibrates niacin, fish oil, or other products containing omega-3 fatty acids unless on a stable well controlled dose for at least 30 days prior to screening that is not anticipated to change during the study period.