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Mycophenolate mofetil in steroid-dependent idiopathic nephrotic syndrome

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Abstract

Background

Prospective studies have established the mycophenolate mofetil (MMF) efficiency in childhood idiopathic nephrotic syndrome (INS) but reports on the long-term outcome are lacking. Moreover, the search for factors influencing its efficiency would be useful to define its place among the other treatments.

Methods

We performed a monocentric retrospective study including 96 children with steroid-dependent INS followed for 4.7 years (median) (IQ 3–6) after the onset of MMF treatment. The characteristics of responder patients (n = 74), as defined by a 50 % decrease of relapse rate and/or a 60 % decrease of steroid dose, and of non-responder patients (n = 22) were compared by univariate analysis and multivariate logistic regression.

Results

Withdrawal of prednisone was achieved in 48/96 patients after a median duration of 18.1 months (IQ 7.8–30.0) of MMF. Only 26/48 patients did not relapse under MMF alone. After MMF was stopped in these patients, only six remained in remission without any treatment at last follow-up. Responders had a shorter time to remission at the first flare (9.5 vs. 15 days, p = 0.02), a shorter disease duration prior to the onset of MMF (22.2 vs. 94.5 months, p = 0.001), and were younger at the MMF initiation (6.7 vs. 10.1 years, p = 0.02) than non-responder patients. The age of MMF initiation was an independent factor associated with efficiency (OR = 0.80, 95 % CI [0.69, 0.93], p < 0.01).

Conclusions

MMF is more efficient in young patients treated early in the disease course. Nevertheless, MMF has no remnant effect while nearly all patients relapsed after withdrawal of the drug.

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Authors and Affiliations

  1. Department of Pediatric Nephrology, Hôpital Robert Debré, APHP, 48 Boulevard Sérurier, 75935, Paris, Cedex 19, France

    Laurène Dehoux, Julien Hogan, Claire Dossier, Marc Fila, Olivier Niel, Anne Maisin, Marie Alice Macher, Thérésa Kwon, Véronique Baudouin & Georges Deschênes

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  1. Laurène Dehoux
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  2. Julien Hogan
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  3. Claire Dossier
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  4. Marc Fila
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  5. Olivier Niel
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  6. Anne Maisin
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  7. Marie Alice Macher
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  8. Thérésa Kwon
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  9. Véronique Baudouin
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  10. Georges Deschênes
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Correspondence to Laurène Dehoux.

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This work was approved by the local ethics committee.

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The author(s) declare that they have no competing interests.

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Dehoux, L., Hogan, J., Dossier, C. et al. Mycophenolate mofetil in steroid-dependent idiopathic nephrotic syndrome. Pediatr Nephrol 31, 2095–2101 (2016). https://doi.org/10.1007/s00467-016-3400-y

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  • DOI: https://doi.org/10.1007/s00467-016-3400-y

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