Ein Beitrag zur Anwendung von Mycophenolsäure bei Autoimmunerkrankungen des Auges: Können wir die Therapie optimieren?

Enteric-coated mycophenolate sodium in the treatment of non-infectious intermediate uveitis: results of a prospective, controlled, randomised, open-label, early terminated multicentre trial

BACKGROUND/AIMS

To evaluate the efficacy, safety and tolerability of enteric-coated mycophenolate sodium (EC-MPS) in combination with low-dose corticosteroids compared with a monotherapy with low-dose corticosteroids in subjects with non-infectious intermediate uveitis (IU).

METHODS

Open-label, prospective, controlled, randomised multicentre trial. Patients were randomised in a 1:1 ratio to either the treatment group (prednisolone plus EC-MPS) or control group (prednisolone monotherapy). Patients in the control group who relapsed within 6 months changed to the crossover group (prednisolone plus EC-MPS). Maximum treatment duration was 15 months. The primary endpoint was the time to first relapse in the treatment group and control group.

RESULTS

Forty-one patients at eight sites were analysed. Twenty-two patients were allocated to the treatment group, with 19 patients in the control group. A first relapse occurred in 9 patients (40.9%) in the treatment group and 15 patients (78.9%) in the control group (p=0.03). The median time to the first relapse was >15 months for the treatment group and 2.8 months for the control group (p=0.07). The probability of relapse-free survival at month 15 was estimated to be 52.9% in the treatment group and 19.7% in the control group (p=0.01). 15 patients changed to the crossover group. Of these, only four patients developed a second relapse. No safety concerns arose during the trial. Only one patient had to discontinue EC-MPS due to increased liver enzymes.

CONCLUSION

EC-MPS can be considered an effective and well-tolerated immunosuppressive drug to prevent relapses in patients with chronic IU.

TRIAL REGISTRATION NUMBER

EUDRACT number: 2009-009998-10, Results.

[Therapy of intermediate uveitis]

Intermediate uveitis is a form of intraocular inflammation in which the vitreous body is the major site of inflammation. Intermediate uveitis is primarily treated medicinally and systemic corticosteroids are the mainstay of therapy. When recurrence of uveitis or side effects occur during corticosteroid therapy an immunosuppressive treatment is required. Cyclosporine A is the only immunosuppressive agent that is approved for therapy of uveitis in Germany; however, other immunosuppressive drugs have also been shown to be effective and well-tolerated in patients with intermediate uveitis. In severe therapy-refractory cases when conventional immunosuppressive therapy has failed, biologics can be used. In patients with unilateral uveitis or when the systemic therapy is contraindicated because of side effects, an intravitreal steroid treatment can be carried out. In certain cases a vitrectomy may be used.

Mycophenolic acid in the treatment of birdshot chorioretinopathy: long-term follow-up

AIM

To assess the long-term efficacy and tolerability of both derivatives of mycophenolic acid, mycophenolate mofetil (MMF) and mycophenolate sodium (MPS), in the therapy of patients with birdshot chorioretinopathy (BSCR).

METHODS

Retrospective analysis of 24 patients (48 eyes) with BSCR, treated with MMF or MPS with a follow-up of at least 1 year. The main outcome measures included control of inflammation, steroid-sparing potential and side effects. Secondary outcome measure was the development of retinal function during the therapy measured by best-corrected visual acuity (BCVA), visual field and/or electroretinography (ERG).

RESULTS

Twelve patients (50%) were treated with MMF and 12 patients (50%) with MPS. Control of intraocular inflammation, defined as complete lack of clinical and angiographic signs of inflammatory activity, was achieved in 16 of 24 patients (67%). The angiographic signs of activity were significantly reduced during the follow-up (p<0.05). No significant difference was found in the mean BCVA, the visual field and the ERG parameters during the treatment compared with the baseline (p>0.05). In 20 out of 21 patients (95%) who received systemic corticosteroids, the corticosteroids could be tapered to a daily dose of ≤10 mg (rate 0.26/patient-year). Drug-related side effects occurred in 12 patients (50%, rate 0.16/patient-year). In four patients (17%), a therapy switch from MMF to MPS was undertaken due to gastrointestinal discomfort.

CONCLUSIONS

Derivatives of mycophenolic acid are effective and safe drugs for the treatment of BSCR. In cases with gastrointestinal side effects, a therapy switch from MMF to MPS should be considered.

Long-term results of therapy with mycophenolate mofetil in chronic non-infectious uveitis

BACKGROUND

Short-term studies have shown mycophenolate mofetil (MMF) to be a useful immunosuppressive agent for the treatment of intraocular inflammation. The aim of our study was to assess the long-term efficacy and tolerability of MMF in patients with chronic non-infectious uveitis, as well as to analyze disease course following discontinuation of therapy.

METHODS

This is a retrospective case series on 60 uveitis patients treated with MMF with a follow-up period of at least 5 years. The main outcome measures were: control of inflammation, corticosteroid-sparing potential, side-effects, ability to stop/taper MMF treatment because of effective control of inflammation and relapse rate after therapy discontinuation.

RESULTS

Control of intraocular inflammation (efficacy of MMF), defined as inactive disease under prednisolone dose of ≤ 10 mg daily, was achieved in 43 of 60 patients (72%) after 1 year of MMF treatment at a rate of 0.72 per patient-year (PY), and in 45 of 55 patients (82%) after 2 years therapy (rate: 0.41/PY). An improvement (3 lines) or stabilization of visual acuity was observed in 49 patients (82%), and a worsening in 11 patients (18%, 95% CI: 10-30%). The probability of discontinuing prednisolone, estimated by the Kaplan-Meier method, was 40% after 5 years therapy. The probability of discontinuing mycophenolate mofetil due to efficacy was 33% after 5 years treatment. Recurrences of uveitis occurred in six of 21 patients (29%, rate: 0.11/PY) after MMF discontinuation due to efficacy. The treatment was stopped because of inefficacy in 12 patients (rate: 0.05/PY) and because of side-effects in four patients (rate: 0.02/PY). The rate of adverse effects during MMF therapy was 0.17/PY.

CONCLUSIONS

Our data show that mycophenolate mofetil is generally effective and well tolerated in the treatment of chronic non-infectious uveitis.