Therapy for severe interstitial lung disease in systemic sclerosis. A retrospective study.
OBJECTIVE
This retrospective observational study attempted to determine whether any of the therapies used in the management of systemic sclerosis (SSc) patients held potential benefit for patients with interstitial lung disease.


METHODS
All patients with SSc who had a pulmonary function test (PFT) showing a forced vital capacity (FVC) of < 70% predicted and an additional PFT at least 4 months later were grouped according to the treatment they received. Changes in pulmonary function were analyzed by the mean percent predicted FVC from the initial and the final test, and by the rate of percent change in FVC (ml/year) in the first 2 years after therapy. Bronchoalveolar lavage was performed in a subset of these patients.


RESULTS
Of 363 SSc patients who had an FVC < 70% predicted, 122 had a second PFT and fulfilled the criteria for one of the following drug groups: high-dose prednisone (n = 21), immunosuppressive other than cyclophosphamide (CYC) (n = 16), CYC (n = 14), D-penicillamine (n = 37), or no drug (n = 34). In both analyses, the CYC-treated group showed significantly more improvement in FVC than did the other groups. Patients with early disease had the greatest likelihood of responding to any drug.


CONCLUSIONS
This retrospective study shows that patients treated with CYC had a significant improvement in FVC over time. Prospective controlled studies of CYC treatment in early disease are necessary to determine if it can significantly alter the natural history of interstitial lung disease.
Steen
V D
VD
University of Pittsburgh School of Medicine, Pennsylvania.
Lanz
J K
JK
Conte
C
C
Owens
G R
GR
Medsger
T A
TA
D000328:Adult; D001992:Bronchoalveolar Lavage Fluid / Q000166:cytology; D002452:Cell Count; D003520:Cyclophosphamide / Q000627:therapeutic use; D005260:Female; D006801:Humans; D007166:Immunosuppressive Agents / Q000627:therapeutic use; D008297:Male; D010396:Penicillamine / Q000627:therapeutic use; D011241:Prednisone / Q000627:therapeutic use; D011658:Pulmonary Fibrosis / Q000188:drug therapy* / Q000209:etiology* / Q000503:physiopathology; D012129:Respiratory Function Tests; D012189:Retrospective Studies; D012595:Scleroderma, Systemic / Q000150:complications*; D014797:Vital Capacity
D007166:Immunosuppressive Agents; D003520:Cyclophosphamide; D010396:Penicillamine; D011241:Prednisone