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Pediatric Nephrology

, Volume 21, Issue 12, pp 1847–1853 | Cite as

Steroid-resistant nephrotic syndrome: the influence of race on cyclophosphamide sensitivity

  • Rajendra BhimmaEmail author
  • Miriam Adhikari
  • Kareshma Asharam
Original Article

Abstract

Steroid-resistant (SR) forms of nephrotic syndrome (NS) have a poorer outcome in blacks compared to other racial groups. In this study, 223 children with SRNS, aged 1–16 years old, were analysed retrospectively for the period 1976–2004. Treatment schedules included oral cyclophosphamide (2–3 mg/kg) with prednisone 0.5–1 mg/kg (maximum 60 mg) only (n=90); prednisone on alternate days with methylprednisolone (30 mg/kg, maximum 1 g) and oral cyclophosphamide (n=117); oral prednisone on alternate days, three doses of intravenous methylprednisolone on alternate days and monthly doses of intravenous cyclophosphamide (500–750 mg m−2 dose−1×7 doses monthly) (n=10); or cyclosporine 5 mg kg−1 day−1 adjusted to a trough level of 150–200 mg/ml (n=6). We compared the clinical and biochemical characteristics and outcome using different forms of therapies. A total of 183 (82.1%) underwent biopsy; 84 (45.9%) were Indian and 99 (54.1%) were black. Sixty-six (36.1%) had minimal change NS, 66 (36.1%) had focal segmental glomerulosclerosis (FSGS), 15 (8.2%) had a proliferative form of NS, and 36 (19.7%) had other forms of NS. Of the 84 Indian children biopsied, 58 (69.0%) were in complete remission, including 29 of 40 (72.5%) treated with oral cyclophosphamide and prednisone only. Of the 99 black children who were biopsied, 20 (20.2%) achieved complete remission; none of those treated with oral cyclophosphamide and prednisone only achieved complete remission. Of the 40 Indian children who were not biopsied who received only oral prednisone and cyclophosphamide, 32 (80%) achieved complete remission. This study shows Indian children with SRNS respond better to treatment than black children (69.0 vs. 20.2%). Since 80% of Indian children with SRNS responded to a trial of oral cyclophosphamide and prednisone, we propose the use of oral cyclophosphamide therapy in non-black children before embarking on renal biopsy.

Keywords

Nephrotic syndrome Children Steroid resistance Treatment 

Notes

Acknowledgements

The authors wish to thank the Medical Manager of King Edward VIII Hospital for permission to publish this paper, Ms. Cathy Connolly for her assistance with the statistics, Dr. Craig B. Langman from The Children’s Memorial Hospital in Chicago for his comments and Ms. S. Rambali for her secretarial assistance.

We are grateful to the Medical Research Council (SA) and the National Kidney foundation (SA) for their financial support.

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Copyright information

© IPNA 2006

Authors and Affiliations

  • Rajendra Bhimma
    • 1
    • 2
    Email author
  • Miriam Adhikari
    • 1
  • Kareshma Asharam
    • 1
  1. 1.Department of Paediatrics and Child Health, Nelson R Mandela School of MedicineUniversity of KwaZulu-NatalCongellaSouth Africa
  2. 2.Department of Mother and Child Health, Nelson R Mandela School of MedicineUniversity of KwaZulu-NatalCongellaSouth Africa

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