Evaluation of Efficacy and Safety of Rituximab and Mycophenolate Mofetil Combination in Patients With Interstitial Lung Disease Related to Systemic Sclerosis

one course of IV rituximab consisting of an infusion of 1000 mg rituximab (diluted in 500 mL of saline 0.9 % sodium chloride) will be given at day 1, day 15 and an infusion of 500 mg rituximab (in 500 mL of saline 0.9 % sodium chloride) at week 24;

one course of intravenous placebo of rituximab consisting of an infusion of 500 mL of saline (0.9% sodium chloride) infusion will be given at day 1, day 15 and week 24;