Long-term treatment of scleroderma-related digital ulcers with iloprost: a cohort study

Raynaud's phenomenon and chronic/recurrent digital ulcers (DU) are main features of systemic sclerosis (SSc). Their treatment includes both systemic (i.e., iloprost) and local therapies. We report the therapeutic effects of iloprost in a cohort of SSc patients during a long-lasting follow-up period.

Fifty consecutive SSc patients (M/F 7/43, age at SSc diagnosis 43.5±12.7SD years) received iloprost infusions for 10±4.2SD years. Iloprost schedule consisted in monthly infusion at 0.8-1 ng/kg body weight/min (average cumulative dose 25 μg), according to patients' tolerance. For recalcitrant cases, continuous infusion of iloprost (3 days, average 0.2 mg) was administered.

31/50 (62%) patients showed DU at the beginning of iloprost therapy: among them, 22 (71%) resolved during the follow-up, while the other 9 presented recurrent or chronic DU, despite the treatment. With regards the 19/50 patients without DU at baseline, only one developed skin lesions at the end of 10-year follow-up, when severe pulmonary hypertension developed, which lead to exitus. Considering the 31 patients with DU at baseline, a diffuse skin subset was present in 3/22 patients with healed DU, and in 5/9 who did not (13.6% vs. 55.5%; p=0.027).

Iloprost is a long-term effective treatment to achieve healing and prevention in SSc-related DU. Besides the possible problems concerning patients' tolerability or clinical management, iloprost therapy may be considered of great help in the therapeutic strategy of SSc-related ischaemic manifestations.