Background: The management of systemic sclerosis remains unsatisfactor
y. Thus far, the action of extracorporeal photopheresis (ECP) in sever
e systemic scleroderma has been evaluated in short-term studies, and o
nly limited experience has been obtained with long-term application. O
bjective: The aim of the present study was to evaluate prospectively t
he long-term effect of ECP in a group of 16 patients suffering from se
vere scleroderma, showing visceral involvement and progressive clinica
l course. Methods: Fourteen patients with systemic scleroderma involvi
ng several organs, 1 with CREST syndrome and another with scleroderma-
myositis overlap syndrome were treated with ECP over a period of 6-45
months. In 3 cases, gamma-IFN was additionally administered. Skin and
visceral involvement were assessed by evaluating a series of clinical
criteria and results from laboratory, imaging and functional tests. Re
sults: Overall, clear improvement was encountered in 6 patients, mixed
response in 2, stable disease in 3 and continuing progressive course
in 5 patients. Four out of 6 patients with improvement were treated wi
th ECP early after onset of scleroderma (less than or equal to 2 years
), whereas all patients with a progressive course under ECP had had sc
leroderma for longer than 2 years. Immunosuppressive drugs previously
administered could be reduced or fully withdrawn under ECP treatment i
n 5 patients, bur additional oral medication was introduced in 4 patie
nts due to disease progression. Addition of gamma-IFN to ECP did not r
eveal further benefit. No side-effects were recorded under ECP treatme
nt. Conclusions: Based on this observation, we believe that long-term
ECP represents an effective treatment modality in severe scleroderma p
articularly when started early, with stabilization of the disease cour
se and partial remission of the cutaneous findings, whereas visceral i
nvolvement, if present, may rarely improve.