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Sinha R, Pradhan S, Raut S, Banerjee S, Sarkar S, Akhtar S, Dasgupta D, Poddar S, Mandal M, Kamal VK, Chaudhury AR, Tse Y. Single (375 mg/m 2) vs. double dose of rituximab along with mycophenolate mofetil for children with steroid-dependent/frequently relapsing nephrotic syndrome: a multicentre open-label randomized controlled trial. Pediatr Nephrol 2025; 40:995-1004. [PMID: 39729126 DOI: 10.1007/s00467-024-06619-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2024] [Revised: 11/20/2024] [Accepted: 11/22/2024] [Indexed: 12/28/2024]
Abstract
BACKGROUND Optimal dosing of rituximab when given with mycophenolate mofetil (MMF) for frequently relapsing nephrotic syndrome/steroid-dependent nephrotic syndrome (FRNS/SDNS) remains uncertain. METHODS This was a prospective, non-inferiority, open-label randomized controlled multicentre study. Children (2-18 years old) with difficult FRNS/SDNS were randomized to group A (rituximab 375 mg/m2 once) or group B (rituximab 375 mg/m2 twice; 7-14 days apart) followed by continuous MMF and 3 months of tapered steroids. Primary outcome at an 18-month follow-up was time to first relapse. Secondary outcomes included post rituximab time to CD19 repopulation, sustained remission and significant adverse events (SAEs). RESULTS Ninety-six children (median age 8.6 years; IQR 6.4 to 11.3 years, 72% male) were randomized, 48 per arm. CD19 depletion (< 1%) was achieved in both groups. Three from single dose and two from double dose arm were lost to follow-up or withdrew. After 18 months, although non-inferiority could not be demonstrated, there was no difference in primary outcome either by intention-to-treat or per-protocol analysis. The restricted mean time to first relapse was 14.5 months (95% CI 13.1-15.9) in group A and 14.8 months (95% CI 13.5-16.1) in group B (p = 0.69). Relapse rate was similar between group A (19/45; 42%) and group B (16/46; 35%) (p = 0.53, hazard ratio 0.86 (95% CI 0.46-1.6)). Secondary outcomes were also similar between the groups. CONCLUSIONS Among children with FRNS/SDNS although non-inferiority could not be demonstrated, no statistically significant difference in outcome was found between 375 and 750 mg/m2 rituximab when accompanied with MMF.
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Affiliation(s)
- Rajiv Sinha
- Division of Pediatric Nephrology, Institute of Child Health, Kolkata, India.
| | - Subal Pradhan
- Division of Pediatric Nephrology, SVPPGIP, SCB MCH, Cuttack, India
| | - Sumantra Raut
- Department of Nephrology, North Bengal Medical College, Darjeeling, India
| | - Sushmita Banerjee
- Division of Pediatric Nephrology, Institute of Child Health, Kolkata, India
| | - Subhankar Sarkar
- Department of Pediatric Medicine, All India Institute of Medical Science, Kalyani, India
| | - Shakil Akhtar
- Division of Pediatric Nephrology, Institute of Child Health, Kolkata, India
| | - Deblina Dasgupta
- Division of Pediatric Nephrology, Institute of Child Health, Kolkata, India
| | - Sanjukta Poddar
- Division of Pediatric Nephrology, Institute of Child Health, Kolkata, India
| | - Mita Mandal
- Department of Obstetrics & Gynaecology, All India Institute of Medical Science, Kalyani, India
| | - Vineet Kumar Kamal
- Department of Biostatistics, All India Institute of Medical Science, Kalyani, India
| | | | - Yincent Tse
- Department of Pediatric Nephrology, Great North Children Hospital, Newcastle Upon Tyne, UK
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Niu XL, Gu YF, Feng D, Hao S, Kuang XY, Wang P, Huang WY. Long Term Evaluations of First Single-dose Rituximab in Children with Steroid-Dependent Minimal-Change Nephrotic Syndrome. Ren Fail 2024; 46:2427173. [PMID: 39593209 PMCID: PMC11610296 DOI: 10.1080/0886022x.2024.2427173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2024] [Revised: 11/02/2024] [Accepted: 11/04/2024] [Indexed: 11/28/2024] Open
Abstract
OBJECTIVE To explore the long-term efficacy and safety of the first single dose of rituximab in children with steroid-dependent minimal-change nephrotic syndrome (SD-MCNS) over a two-year period after infusion. METHODS A 2-year retrospective observational study was performed on children with SD-MCNS who received the first single dose of rituximab (375 mg/m2) from October 2011 to December 2018. RESULTS Seventy-seven patients (median age 8.17 years) were included. The efficacy of the first single-dose rituximab in children with SD-MCNS was 90.91% (70/77). An overall relapse rate of 78.33% was achieved. Older age at rituximab treatment onset (>8.46 years), a lower steroid-dependent dosage (<18.76 mg/m2·d) and a higher CD4+ T-cell count before rituximab treatment (>31.22%) were positively related to treatment efficacy (p < 0.05). Male sex, younger age at rituximab treatment onset, a higher IgE level before rituximab treatment, and a higher white blood cell count and CD3+ T-cell count at the time of steroid withdrawal were associated with disease relapse (p < 0.05). A model for predicting relapse after rituximab treatment in SD-MCNS patients was established. CONCLUSIONS The first single-dose rituximab treatment for children with SD-MCNS was effective and safe. Greater efficacy was observed in patients who were older at rituximab treatment onset, had a lower steroid-dependent dosage, or had a higher CD4+ T-cell count before rituximab treatment. In contrast, younger male patients with a higher IgE level experienced an increased occurrence of relapse.
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Affiliation(s)
- Xiao-Ling Niu
- Department of Nephrology, Rheumatology and Immunology, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yun-Fan Gu
- Department of Nephrology, Rheumatology and Immunology, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Dan Feng
- Department of Nephrology, Rheumatology and Immunology, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Sheng Hao
- Department of Nephrology, Rheumatology and Immunology, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xin-Yu Kuang
- Department of Nephrology, Rheumatology and Immunology, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ping Wang
- Department of Nephrology, Rheumatology and Immunology, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Wen-Yan Huang
- Department of Nephrology, Rheumatology and Immunology, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Chen Y, Shen Q, Xiong Y, Dong M, Xu H, Li Z. Using real-world data to inform dosing strategies of rituximab for pediatric patients with frequent-relapsing or steroid-dependent nephrotic syndrome: a prospective pharmacokinetic-pharmacodynamic study. Front Pharmacol 2024; 14:1319744. [PMID: 38264525 PMCID: PMC10803641 DOI: 10.3389/fphar.2023.1319744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 12/28/2023] [Indexed: 01/25/2024] Open
Abstract
Objectives: Rituximab is frequently used off-label for the treatment of frequent-relapsing/steroid-dependent nephrotic syndrome (FRNS/SDNS). However, the optimal dosing schedules remain undetermined. The objective of this study was to establish a population pharmacokinetic-pharmacodynamic (PK-PD) model in pediatric patients with FRNS/SDNS, and to investigate dosing regimens that provide adequate suppression of B lymphocytes. Methods: A prospective, open-label, single-center study was conducted in Nephrology Department at Children's Hospital of Fudan University, and a two-compartment PK model of rituximab in pediatric FRNS/SDNS has been developed previously by our group. CD19+ lymphocyte count profiles were obtained from these patients. The presence of anti-rituximab antibodies was assessed prior to medication in children who had previously received rituximab or during follow-up at the last sampling point for PK analysis. PK-PD analyses were performed to describe the changes of CD19+ lymphocytes, with rituximab assumed to increase their death rate. Monte Carlo simulation was conducted to evaluate different dosing regimens. Results: In total, 102 measurements of CD19+ lymphocyte counts were available for PK-PD analysis. No detectable levels of anti-rituximab antibodies were observed during the PK follow-up period. A turnover model with saturable stimulatory action of rituximab on the removal of lymphocytes best characterized the relationship between rituximab concentration and CD19+ lymphocyte counts, where the Emax and EC50 were estimated to be 99.6*106/L and 5.87 μg/mL, respectively. Simulations indicated that a single infusion of 750 mg/m2 and 2 infusions of 375 mg/m2 both yielded a 10-week suppression of CD19+ lymphocytes. Conclusion: This study represents a first attempt to quantitatively describe the PK-PD relationship of rituximab in pediatric patients with FRNS/SDNS, and provide a potential pathway for future precision dosing strategy for rituximab therapy. Further clinical studies are warranted to evaluate the efficacy and safety of different dosing schemes.
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Affiliation(s)
- Yewei Chen
- Department of Pharmacy, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Qian Shen
- Department of Nephrology, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Ye Xiong
- Division of Clinical Pharmacology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - Min Dong
- Division of Clinical Pharmacology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
- Department of Pediatrics, University of Cincinnati, Cincinnati, OH, United States
| | - Hong Xu
- Department of Nephrology, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Zhiping Li
- Department of Pharmacy, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
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Gomes R, Mosca S, Bastos-Gomes M, Correia-Costa L, Rocha L, Teixeira A, Costa T, Sameiro-Faria M, Matos P, Mota C. Rituximab therapy for childhood onset idiopathic nephrotic syndrome: experience of a Portuguese tertiary center. J Bras Nefrol 2023; 45:326-334. [PMID: 36259942 PMCID: PMC10697169 DOI: 10.1590/2175-8239-jbn-2022-0056en] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 08/29/2022] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION Rituximab (RTX) is a therapeutic option in pediatric difficult-to-treat idiopathic nephrotic syndrome (NS). We aimed to assess the efficacy and safety of RTX use in these patients. METHOD A retrospective study of all patients with idiopathic NS treated with RTX was conducted in a pediatric nephrology division of a tertiary hospital. Demographic, anthropometric, clinical and analytical data were collected prior to treatment and at 6, 12, and 24 months. RESULTS Sixteen patients were included (11 males), with a median (25th-75th percentile, P25-P75) age at diagnosis of 2 (2.0-2.8) years. Fifteen were steroid-sensitive and 1 was steroid-resistant and sensitive to cyclosporine. The median age at administration of RTX was 10 (6.3-14.0) years. Throughout a median follow-up time of 2.5 (1.0-3.0) years, 6 (37.5%) patients achieved partial remission and 7 (43.8%) had no relapses and were not taking any immunosuppressants at the 24-month follow-up visit. Regarding complications, 1 patient presented persistent hypogammaglobulinemia. Compared with the 12-month period before RTX, there was a decrease in the median number of relapses at 6 and 12 months [3 (3.0-4.0) vs 0 (0-0.8) and 0.50 (0-1.0), respectively; p = 0.001] and in the daily steroids dose (mg/kg/day) at 6, 12, and 24 months [0.29 (0.15-0.67)vs [0.10 (0.07-0.13); p = 0.001], [0.12 (0.05-0.22); p = 0.005] and [0.07(0.04-0.18); p = 0.021]], respectively. There was also a reduction in the median BMI z score at 24 months [2.11 (0.45-3.70) vs. 2.93 (2.01-3.98); p = 0.049]. CONCLUSION Our results confirm the efficacy and safety of RTX use in pediatric idiopathic NS and highlight its' potential cardiometabolic benefits.
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Affiliation(s)
- Rita Gomes
- Centro Hospitalar Universitário do Porto, Centro Materno-Infantil do
Norte, Serviço de Pediatria, Porto, Portugal
| | - Sara Mosca
- Centro Hospitalar Universitário do Porto, Centro Materno-Infantil do
Norte, Serviço de Pediatria, Porto, Portugal
| | - Mariana Bastos-Gomes
- Unidade Local de Saúde do Alto Minho, Serviço de Pediatria, EPE,
Viana do Castelo, Portugal
| | - Liane Correia-Costa
- Centro Hospitalar Universitário do Porto, Centro Materno-Infantil do
Norte, Serviço de Pediatria, Unidade de Nefrologia Pediátrica, Porto,
Portugal
| | - Liliana Rocha
- Centro Hospitalar Universitário do Porto, Centro Materno-Infantil do
Norte, Serviço de Pediatria, Unidade de Nefrologia Pediátrica, Porto,
Portugal
| | - Ana Teixeira
- Centro Hospitalar Universitário do Porto, Centro Materno-Infantil do
Norte, Serviço de Pediatria, Unidade de Nefrologia Pediátrica, Porto,
Portugal
| | - Teresa Costa
- Centro Hospitalar Universitário do Porto, Centro Materno-Infantil do
Norte, Serviço de Pediatria, Unidade de Nefrologia Pediátrica, Porto,
Portugal
| | - Maria Sameiro-Faria
- Centro Hospitalar Universitário do Porto, Centro Materno-Infantil do
Norte, Serviço de Pediatria, Unidade de Nefrologia Pediátrica, Porto,
Portugal
| | - Paula Matos
- Centro Hospitalar Universitário do Porto, Centro Materno-Infantil do
Norte, Serviço de Pediatria, Unidade de Nefrologia Pediátrica, Porto,
Portugal
| | - Conceição Mota
- Centro Hospitalar Universitário do Porto, Centro Materno-Infantil do
Norte, Serviço de Pediatria, Unidade de Nefrologia Pediátrica, Porto,
Portugal
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Chan EYH, Yap DYH, Colucci M, Ma ALT, Parekh RS, Tullus K. Use of Rituximab in Childhood Idiopathic Nephrotic Syndrome. Clin J Am Soc Nephrol 2023; 18:533-548. [PMID: 36456193 PMCID: PMC10103321 DOI: 10.2215/cjn.08570722] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 10/11/2022] [Accepted: 10/31/2022] [Indexed: 12/04/2022]
Abstract
Rituximab is an established therapy in children with idiopathic nephrotic syndrome to sustain short- to medium-term disease remission and avoid steroid toxicities. Recent trials focus on its use as a first-line agent among those with milder disease severity. Rituximab is used in multidrug refractory nephrotic syndrome and post-transplant disease recurrence, although the evidence is much less substantial. Available data suggest that the treatment response to rituximab depends on various patient factors, dosing regimen, and the concomitant use of maintenance immunosuppression. After repeated treatments, patients are found to have an improving response overall with a longer relapse-free period. The drug effect, however, is not permanent, and 80% of patients eventually relapse and many will require an additional course of rituximab. This underpins the importance of understanding the long-term safety profile on repeated treatments. Although rituximab appears to be generally safe, there are concerns about long-term hypogammaglobulinemia, especially in young children. Reliable immunophenotyping and biomarkers are yet to be discovered to predict treatment success, risk of both rare and severe side effects, e.g. , persistent hypogammaglobulinemia, and guiding of redosing strategy. In this review, we highlight recent advances in the use of rituximab for childhood nephrotic syndrome and how the therapeutic landscape is evolving.
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Affiliation(s)
- Eugene Yu-hin Chan
- Paediatric Nephrology Centre, Hong Kong Children's Hospital, Kowloon, Hong Kong
- Department of Paediatric and Adolescent Medicine, Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Desmond Yat-hin Yap
- Division of Nephrology, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong
| | - Manuela Colucci
- Renal Diseases Research Unit, Genetics and Rare Diseases Research Division, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Alison Lap-tak Ma
- Paediatric Nephrology Centre, Hong Kong Children's Hospital, Kowloon, Hong Kong
- Department of Paediatric and Adolescent Medicine, Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Rulan S. Parekh
- Departments of Medicine and Pediatrics, Women's College Hospital, Hospital for Sick Children and University of Toronto, Toronto, Ontario, Canada
| | - Kjell Tullus
- Department of Paediatric Nephrology, Great Ormond Street Hospital for Children NHS Trust, London, United Kingdom
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Gomes R, Mosca S, Bastos-Gomes M, Correia-Costa L, Rocha L, Teixeira A, Costa T, Sameiro-Faria M, Matos P, Mota C. Terapia com Rituximabe para síndrome nefrótica idiopática de início na infância: experiência de um centro terciário português. J Bras Nefrol 2022. [DOI: 10.1590/2175-8239-jbn-2022-0056pt] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Resumo Introdução: Rituximabe (RTX) é uma opção terapêutica na síndrome nefrótica (SN) idiopática pediátrica de difícil tratamento. Visamos avaliar eficácia e segurança do uso de RTX nestes pacientes. Método: Realizou-se estudo retrospectivo de todos os pacientes com SN idiopática tratados com RTX, em uma unidade de nefrologia pediátrica de um hospital terciário. Dados demográficos, antropométricos, clínicos e analíticos foram coletados antes do tratamento e aos 6, 12 e 24 meses. Resultados: Incluímos 16 pacientes (11 do sexo masculino), com idade mediana (percentil 25–75, P25–P75) de 2 (2,0–2,8) anos ao diagnóstico. Quinze eram sensíveis a esteroides, e 1 resistente a esteroides e sensível à ciclosporina.A idade mediana na administração do RTX foi 10 (6,3–14,0) anos. Durante um tempo mediano de acompanhamento de 2,5(1,0–3,0) anos, 6 (37,5%) pacientes alcançaram remissão parcial e 7 (43,8%) não tiveram recidivas e não estavam tomando imunossupressor no acompanhamento aos 24 meses. Quanto às complicações,1 paciente apresentou hipogamaglobulinemia persistente. Comparado ao período de12 meses anterior ao RTX, houve diminuição no número mediano de recidivas em 6 e 12 meses [3 (3,0–4,0) vs 0 (0–0,8) e 0,50 (0–1,0), respectivamente; p = 0,001] e na dose diária de esteroides (mg/kg/dia) aos 6, 12 e 24 meses [0,29 (0,15–0,67) >vs [0,10 (0,07–0,13); p = 0,001], [0,12 (0,05–0,22); p = 0,005] e [0,07 (0,04–0,18); p = 0,021], respectivamente. Houve também redução na mediana do escore z do IMC aos 24 meses [2,11 (0,45–3,70) vs 2,93 (2,01–3,98);p = 0,049]. Conclusões: Nossos resultados confirmam a eficácia e segurança do uso de RTX em SN idiopática pediátrica, destacando seus potenciais benefícios cardiometabólicos.
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Affiliation(s)
- Rita Gomes
- Centro Hospitalar Universitário do Porto, Portugal
| | - Sara Mosca
- Centro Hospitalar Universitário do Porto, Portugal
| | | | | | | | - Ana Teixeira
- Centro Hospitalar Universitário do Porto, Portugal
| | - Teresa Costa
- Centro Hospitalar Universitário do Porto, Portugal
| | | | - Paula Matos
- Centro Hospitalar Universitário do Porto, Portugal
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Al Salloum AA, Al Herbish AJ, Al Hissi MA, Abdalla MS, Salim SB, Farhat AH, Shagal RA, Othman A, Alshaiban A, Temsah MHA, Al-Eyadhy AA, Alhasan KA. The outcome of rituximab in treating steroid dependent nephrotic syndrome.: Histopathology and immunosuppressive drugs as predicting factors. Saudi Med J 2022; 43:760-764. [PMID: 35830996 PMCID: PMC9749693 DOI: 10.15537/smj.2022.43.7.20210727] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 05/17/2022] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES To present our experience of treating steroid-dependent nephrotic syndrome (SDNS) in children with repeated doses of rituximab (RTX) with a relatively long follow-up, and to discuss the role of the histopathology type and previous immune-suppressor (IS) drugs on the outcome of these patients. METHODS The patients included in this prospective study were children with SDNS who were in remission on a high-dose steroid or with additional IS drugs. All patients underwent renal biopsy before RTX treatment. Intravenous RTX was administered monthly at 375 mg/m2 for 4 doses. Response to treatment was defined as maintaining remission with no steroid-sparing agents or prednisone for one year. RESULTS Seventeen (14 males) patients were enrolled. Approximately 76% had minimal change disease (MCD) and 3 (18%) patients had immunoglobulin M (IgM) nephropathy. Approximately 85% of MCD and 33% of IgM nephropathy showed complete response to RTX. CONCLUSION Compared to other IS used to treat SDNS, RTX showed a significant decrease in relapse rate with fewer side effects. The dose and interval should be modified according to the patient's characteristics, such as medical history, pathology type, and previous IS agents.
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Affiliation(s)
- Abdullah A. Al Salloum
- From the Department of Pediatrics (Al Salloum, Al Herbish, Al Hissi, Abdallah, Salim, Farhat, Shagal, Othman, Alshiban, Temsah, Al-Eyadhy, Alhasan), College of Medicine, King Saud University, King Saud University Medical City, and from the Department of Pediatric Kidney Transplant (Alhasan), Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia.
| | - Adi J. Al Herbish
- From the Department of Pediatrics (Al Salloum, Al Herbish, Al Hissi, Abdallah, Salim, Farhat, Shagal, Othman, Alshiban, Temsah, Al-Eyadhy, Alhasan), College of Medicine, King Saud University, King Saud University Medical City, and from the Department of Pediatric Kidney Transplant (Alhasan), Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia.
| | - Mohammed A. Al Hissi
- From the Department of Pediatrics (Al Salloum, Al Herbish, Al Hissi, Abdallah, Salim, Farhat, Shagal, Othman, Alshiban, Temsah, Al-Eyadhy, Alhasan), College of Medicine, King Saud University, King Saud University Medical City, and from the Department of Pediatric Kidney Transplant (Alhasan), Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia.
| | - Mohammed S. Abdalla
- From the Department of Pediatrics (Al Salloum, Al Herbish, Al Hissi, Abdallah, Salim, Farhat, Shagal, Othman, Alshiban, Temsah, Al-Eyadhy, Alhasan), College of Medicine, King Saud University, King Saud University Medical City, and from the Department of Pediatric Kidney Transplant (Alhasan), Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia.
| | - Suha B. Salim
- From the Department of Pediatrics (Al Salloum, Al Herbish, Al Hissi, Abdallah, Salim, Farhat, Shagal, Othman, Alshiban, Temsah, Al-Eyadhy, Alhasan), College of Medicine, King Saud University, King Saud University Medical City, and from the Department of Pediatric Kidney Transplant (Alhasan), Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia.
| | - Afrah H. Farhat
- From the Department of Pediatrics (Al Salloum, Al Herbish, Al Hissi, Abdallah, Salim, Farhat, Shagal, Othman, Alshiban, Temsah, Al-Eyadhy, Alhasan), College of Medicine, King Saud University, King Saud University Medical City, and from the Department of Pediatric Kidney Transplant (Alhasan), Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia.
| | - Reem A. Shagal
- From the Department of Pediatrics (Al Salloum, Al Herbish, Al Hissi, Abdallah, Salim, Farhat, Shagal, Othman, Alshiban, Temsah, Al-Eyadhy, Alhasan), College of Medicine, King Saud University, King Saud University Medical City, and from the Department of Pediatric Kidney Transplant (Alhasan), Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia.
| | - Abduldafaee Othman
- From the Department of Pediatrics (Al Salloum, Al Herbish, Al Hissi, Abdallah, Salim, Farhat, Shagal, Othman, Alshiban, Temsah, Al-Eyadhy, Alhasan), College of Medicine, King Saud University, King Saud University Medical City, and from the Department of Pediatric Kidney Transplant (Alhasan), Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia.
| | - Abdulelah Alshaiban
- From the Department of Pediatrics (Al Salloum, Al Herbish, Al Hissi, Abdallah, Salim, Farhat, Shagal, Othman, Alshiban, Temsah, Al-Eyadhy, Alhasan), College of Medicine, King Saud University, King Saud University Medical City, and from the Department of Pediatric Kidney Transplant (Alhasan), Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia.
| | - Mohamad-Hani A. Temsah
- From the Department of Pediatrics (Al Salloum, Al Herbish, Al Hissi, Abdallah, Salim, Farhat, Shagal, Othman, Alshiban, Temsah, Al-Eyadhy, Alhasan), College of Medicine, King Saud University, King Saud University Medical City, and from the Department of Pediatric Kidney Transplant (Alhasan), Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia.
| | - Ayman A. Al-Eyadhy
- From the Department of Pediatrics (Al Salloum, Al Herbish, Al Hissi, Abdallah, Salim, Farhat, Shagal, Othman, Alshiban, Temsah, Al-Eyadhy, Alhasan), College of Medicine, King Saud University, King Saud University Medical City, and from the Department of Pediatric Kidney Transplant (Alhasan), Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia.
| | - Khalid A. Alhasan
- From the Department of Pediatrics (Al Salloum, Al Herbish, Al Hissi, Abdallah, Salim, Farhat, Shagal, Othman, Alshiban, Temsah, Al-Eyadhy, Alhasan), College of Medicine, King Saud University, King Saud University Medical City, and from the Department of Pediatric Kidney Transplant (Alhasan), Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia.
- Address correspondence and reprints request to: Dr. Khalid A. Alhasan, Department of Pediatrics, College of Medicine, King Saud University, King Saud University Medical City, Riyadh, Kingdom of Saudi Arabia. E-mail: ORCID ID: https://orcid.org/0000-0002-42918536
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PARMAKSIZ G. Tedavisi zor nefrotik sendromlu çocuklarda rituksimab tedavisi. CUKUROVA MEDICAL JOURNAL 2022. [DOI: 10.17826/cumj.1038641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Amaç: Rituksimab (RTX), tedavisi zor nefrotik sendromlu (sık tekrarlayan, steroide bağımlı ve steroide dirençli) hastalar için kurtarma tedavisi olarak önerilmektedir. Amacımız zor nefrotik sendromlu çocuklarda RTX tedavisinin etkinliğini ve uzun dönem sonuçlarını değerlendirmek ve deneyimlerimizi paylaşmaktır.
Gereç ve Yöntem: RTX ile tedavi edilen zor nefrotik sendromlu çocukların tıbbi kayıtları geriye dönük olarak değerlendirildi. Oniki ayda nükssüz sağkalım oranı ve B hücre deplesyonun izlemi değerlendirildi.
Bulgular: Çalışmaya 8'i steroide bağımlı (SBNS), 6'sı sık tekrarlayan (STNS) ve 6'sı steroide dirençli nefrotik sendromlu (SDNS) 20 çocuk dahil edildi. RTX tedavisi alan STNS/SBNS hastalarının tedavi öncesi ve sonrası 1 yıllık ortalama nüks sayısı karşılaştırıldı. Ortalama nüks sayısı 2 (1-4)’den 0 (0-1) kez/yıla geriledi. RTX tedavisi sonrası ortalama takip süresi 23 ay (12-59) ve 8 hastada nüks gelişti. RTX tedavisi sonrası nüks eden 5 hastaya, tekrarlayan dozlarda RTX uygulandı. Bu hastalarda, CD19+B hücreleri remisyon sırasında yeniden ortaya çıkarken, hafıza B hücrelerinin deplesyonu devam etti.
Sonuç: RTX tedavisi, STNS/SBNS hastalarında remisyon süresini uzattı, ancak SDNS hastalarında etkisiz kaldı. Bu hastalarda remisyonun idamesi için RTX dozunun tekrarlanabileceği ve tekrarlama dozlarının zamanlamasında en iyi hafıza B hücre sayısının yardımcı olabileceği saptandı.
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Bazargani B, Noparast Z, Khedmat L, Fahimi D, Esfahani ST, Moghtaderi M, Abbasi A, Afshin A, Mojtahedi SY. Efficacy of rituximab therapy in children with nephrotic syndrome: a 10-year experience from an Iranian pediatric hospital. BMC Pediatr 2022; 22:36. [PMID: 35022016 PMCID: PMC8753871 DOI: 10.1186/s12887-022-03109-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 01/05/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
There are controversy results in the optimal management of children with steroid-dependent and steroid-resistant nephrotic syndrome (SDNS, SRNS). This study aimed to determine the efficacy and safety of rituximab (RTX) in these pediatric patients.
Methods
Medical records of 1–18-year-old Iranian children with SDNS (n = 26) and SRNS (n = 22) with a follow-up for at least 24 months were included from 2009 to 2019. The short- and long-term responses to RTX were respectively evaluated to determine the random protein-to-creatinine ratio after 6 and 24 months and classified as complete (CR) and partial (PR) remission or no response.
Results
Male patients (n = 26) were slightly predominate. The median age of patients at the time of RTX therapy was 8.6 ± 4.01 years. At the end of the 6-month follow-up, CR and PR occurred in 23 (47.9%) and 12 (25%) patients, respectively. Of 23 patients with CR, 18 (69.2%) and 5(22.7%) had SDNS and SRNS, respectively (p < 0.005). However, only 18 (37.5%) of patients after 24 months had been in CR. No significant difference in the CR rate was found between the two groups. RTX was more effective when administered during the proteinuria-free period (p = 0.001).
Conclusion
In the short term, RTX significantly was efficient in inducing complete or PR in SDNS and SRNS patients. However, the favorable response rate in a long-term follow-up was insignificantly lower between the two groups.
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Zhang E, Wu Y, Chen C, Wei R, Zhang J, Xie H, Wei C, Ma L, Dong X, Li R, Zhou Y, Cui Y, Wu Y. Effect of different initial rituximab regimens on B cell depletion in children with autoimmune neurological diseases. Mult Scler Relat Disord 2022; 59:103510. [DOI: 10.1016/j.msard.2022.103510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/05/2022] [Accepted: 01/07/2022] [Indexed: 11/26/2022]
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11
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Del Vecchio L, Allinovi M, Rocco P, Brando B. Rituximab Therapy for Adults with Nephrotic Syndromes: Standard Schedules or B Cell-Targeted Therapy? J Clin Med 2021; 10:5847. [PMID: 34945143 PMCID: PMC8709396 DOI: 10.3390/jcm10245847] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/01/2021] [Accepted: 12/08/2021] [Indexed: 12/12/2022] Open
Abstract
Rituximab is a chimeric anti-CD20 monoclonal antibody. It acts mainly through complement-dependent cytotoxicity on B cells expressing the CD20 marker. In this review, we analyse the efficacy and possible pitfalls of rituximab to treat nephrotic syndromes by taking into account pharmacological considerations and CD19 marker testing utility. Despite the fact that the drug has been in use for years, efficacy and treatment schedules in adults with nephrotic syndrome are still a matter of debate. Clinical trials have proven the efficacy and safety of rituximab in idiopathic membranous nephropathy. Data from observational studies also showed the efficacy of rituximab in minimal change disease and focal segmental glomerulosclerosis. Rituximab use is now widely recommended by new Kidney Disease Improved Outcome (KDIGO) guidelines in membranous nephropathy and in frequent-relapsing, steroid-dependent minimal change disease or focal segmental glomerulosclerosis. However, rituximab response has a large interindividual variability. One reason could be that rituximab is lost in the urine at a higher extent in patients with nonselective nephrotic proteinuria, exposing patients to different rituximab plasma levels. Moreover, the association between CD19+ levels and clinical response or relapses is not always present, making the use of this marker in clinical practice complex. High resolution flow cytometry has increased the capability of detecting residual CD19+ B cells. Moreover, it can identify specific B-cell subsets (including IgG-switched memory B cells), which can repopulate at different rates. Its wider use could become a useful tool for better understanding reasons of rituximab failure or avoiding unnecessary retreatments.
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Affiliation(s)
- Lucia Del Vecchio
- Department of Nephrology and Dialysis, Sant’Anna Hospital, ASST Lariana, 22042 Como, Italy
| | - Marco Allinovi
- Nephrology, Dialysis and Transplantation Unit, Careggi University Hospital, 50134 Florence, Italy;
| | - Paolo Rocco
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via G. Colombo, 71-20133 Milan, Italy;
| | - Bruno Brando
- Haematology Laboratory and Transfusion Centre, Legnano General Hospital (Milan), 20025 Milan, Italy;
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12
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Chen Y, Shen Q, Dong M, Xiong Y, Xu H, Li Z. Population Pharmacokinetics of Rituximab in Pediatric Patients With Frequent-Relapsing or Steroid-Dependent Nephrotic Syndrome. Front Pharmacol 2021; 12:725665. [PMID: 34539407 PMCID: PMC8443776 DOI: 10.3389/fphar.2021.725665] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 08/19/2021] [Indexed: 11/25/2022] Open
Abstract
Objectives: Rituximab is frequently used off-label for the treatment of frequent-relapsing nephrotic syndrome (FRNS) or steroid-dependent nephrotic syndrome (SDNS), but the relapse rate remained high and the dosing regimen varied widely. The objective of this study was to characterize rituximab pharmacokinetics (PK) in pediatric patients with FRNS/SDNS, and to investigate the differences in rituximab PK between patients with FRNS/SDNS and other disease populations. Methods: Fourteen pediatric patients received rituximab for FRNS/SDNS treatment were enrolled in a prospective, open-label, single-center PK study. A population PK model of rituximab was developed and validated, and PK parameters were derived for quantitative evaluation. Results: A two-compartment PK model best described the data. Body surface area was the most significant covariate for both central clearance (CL) and apparent central volume of distribution (V1). Patients with FRNS/SDNS exhibited a clinically relevant increase in rituximab CL compared to patient population with non-Hodgkin’s lymphoma (NHL). Conclusion: This pilot study indicated that higher doses or more frequent regimens of rituximab may be required for optimal therapeutic effects in patients with FRNS/SDNS. Further clinical studies with more patients are warranted to confirm this result.
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Affiliation(s)
- Yewei Chen
- Department of Pharmacy, Children's Hospital of Fudan University, Shanghai, China
| | - Qian Shen
- Department of Nephrology, Children's Hospital of Fudan University, Shanghai, China
| | - Min Dong
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.,Department of Pediatrics, University of Cincinnati, Cincinnati, OH, United States
| | - Ye Xiong
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Hong Xu
- Department of Nephrology, Children's Hospital of Fudan University, Shanghai, China
| | - Zhiping Li
- Department of Pharmacy, Children's Hospital of Fudan University, Shanghai, China
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13
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Chan EYH, Tullus K. Rituximab in children with steroid sensitive nephrotic syndrome: in quest of the optimal regimen. Pediatr Nephrol 2021; 36:1397-1405. [PMID: 32577808 DOI: 10.1007/s00467-020-04609-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/02/2020] [Accepted: 05/11/2020] [Indexed: 10/24/2022]
Abstract
Rituximab has emerged as an effective and important therapy in children with complicated frequently relapsing and steroid-dependent nephrotic syndrome to induce long-term disease remission and avoid steroid toxicities. The optimal rituximab regimen is not totally well defined, and there are many varying practices worldwide. We will in this review describe how patient factors, rituximab dose, and use of maintenance immunosuppression affect treatment outcomes. Specifically, low-dose rituximab without concomitant immunosuppression is associated with shorter relapse-free duration while other regimens have comparable outcomes. Patients with more severe disease generally have worse response to rituximab. Although rituximab appears to be generally safe, there are growing concerns of chronic hypogammaglobulinemia and impaired immunity especially in young children. Reliable prognostications and biomarkers for guiding subsequent treatments to avoid excessive treatments are yet to be identified. In this review, we will outline the, as we see it, best approach of rituximab in childhood steroid sensitive nephrotic syndrome at the present state of knowledge.
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Affiliation(s)
- Eugene Yu-Hin Chan
- Department of Paediatric Nephrology, Great Ormond Street Hospital for Children NHS Trust, London, UK.
- Paediatric Nephrology Centre, Hong Kong Children's Hospital, Kowloon, Hong Kong.
| | - Kjell Tullus
- Department of Paediatric Nephrology, Great Ormond Street Hospital for Children NHS Trust, London, UK
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Motte J, Fisse AL, Köse N, Grüter T, Mork H, Athanasopoulos D, Fels M, Otto S, Siglienti I, Schneider-Gold C, Hellwig K, Yoon MS, Gold R, Pitarokoili K. Treatment response to cyclophosphamide, rituximab, and bortezomib in chronic immune-mediated sensorimotor neuropathies: a retrospective cohort study. Ther Adv Neurol Disord 2021; 14:1756286421999631. [PMID: 33747132 PMCID: PMC7940507 DOI: 10.1177/1756286421999631] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 02/10/2021] [Indexed: 12/13/2022] Open
Abstract
Background: Up to 20% of patients with chronic immune-mediated sensorimotor neuropathies (CIN) do not respond adequately to first-line therapies. However, studies on further treatment are scarce. Methods: We analyzed retrospectively 200 CIN patients regarding disease characteristics and response to therapy with cyclophosphamide (CYP), rituximab (RTX), and bortezomib (BTZ). Treatment response was defined as improvement or stabilization of inflammatory neuropathy cause and treatment overall disability score (INCAT-ODSS). Results: A total of 48 of 181 patients (26.5%) received therapy with CYP, RTX, or BTZ. The most frequently and first used therapy was CYP (69%). More than 40% of patients needed a second or third treatment. Overall, 71 treatments were applied in 48 patients. The combination of up to all three treatments enhanced the response-rate to 90%. Treatment within 24 months after initial diagnosis resulted in significantly higher response rate than late treatment (79% versus 50 %, p = 0.04, χ2-test, n = 46) and in lower disability in long-term follow up (INCAT-ODSS 3.8 versus 5.8, p = 0.02, t-test, n = 48). Patients with Lewis-Sumner syndrome (n = 9) and autoantibody mediated neuropathies (n = 13) had excellent response rates after treatment with RTX (90–100%). In contrast, typical chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) showed a response rate of 64% in CYP, 64% in RTX, and 75% in BTZ. Conclusion: Treatment with CYP, RTX, or BTZ was effective in this cohort of CIN refractory to first-line treatment. Our data increase evidence for an early use of these therapies. High efficacy of RTX in Lewis-Sumner syndrome in contrast to typical CIDP suggests a distinct pathophysiology.
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Affiliation(s)
- Jeremias Motte
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Gudrunstrasse 56, Bochum, 44791, Germany
| | - Anna Lena Fisse
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - Nuray Köse
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - Thomas Grüter
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - Hannah Mork
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | | | - Miriam Fels
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - Susanne Otto
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - Ines Siglienti
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | | | - Kerstin Hellwig
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - Min-Suk Yoon
- Immunmediated Neuropathies Biobank (INHIBIT), Ruhr-University Bochum, Bochum, Germany
| | - Ralf Gold
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - Kalliopi Pitarokoili
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
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Ehren R, Benz MR, Brinkkötter PT, Dötsch J, Eberl WR, Gellermann J, Hoyer PF, Jordans I, Kamrath C, Kemper MJ, Latta K, Müller D, Oh J, Tönshoff B, Weber S, Weber LT. Pediatric idiopathic steroid-sensitive nephrotic syndrome: diagnosis and therapy -short version of the updated German best practice guideline (S2e) - AWMF register no. 166-001, 6/2020. Pediatr Nephrol 2021; 36:2971-2985. [PMID: 34091756 PMCID: PMC8445869 DOI: 10.1007/s00467-021-05135-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/26/2021] [Accepted: 05/12/2021] [Indexed: 01/21/2023]
Abstract
Idiopathic nephrotic syndrome is the most frequent glomerular disease in children in most parts of the world. Children with steroid-sensitive nephrotic syndrome (SSNS) generally have a good prognosis regarding the maintenance of normal kidney function even in the case of frequent relapses. The course of SSNS is often complicated by a high rate of relapses and the associated side effects of repeated glucocorticoid (steroid) therapy. The following recommendations for the treatment of SSNS are based on the comprehensive consideration of published evidence by a working group of the German Society for Pediatric Nephrology (GPN) based on the systematic Cochrane reviews on SSNS and the guidelines of the KDIGO working group (Kidney Disease - Improving Global Outcomes).
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Affiliation(s)
- Rasmus Ehren
- Faculty of Medicine and University Hospital Cologne, Pediatric Nephrology, Children's and Adolescents' Hospital, University of Cologne, Cologne, Germany.
| | - Marcus R Benz
- Faculty of Medicine and University Hospital Cologne, Pediatric Nephrology, Children's and Adolescents' Hospital, University of Cologne, Cologne, Germany
| | - Paul T Brinkkötter
- Department II of Internal Medicine and Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Cologne Cluster of Excellence on Cellular Stress Responses in Ageing-Associated Diseases (CECAD), Cologne, Germany
| | - Jörg Dötsch
- Faculty of Medicine and University Hospital Cologne, Pediatric Nephrology, Children's and Adolescents' Hospital, University of Cologne, Cologne, Germany
| | - Wolfgang R Eberl
- Department of Pediatrics, Städtisches Klinikum Braunschweig, Braunschweig, Germany
| | - Jutta Gellermann
- Pediatric Nephrology, Charité Children's Hospital, Berlin, Germany
| | - Peter F Hoyer
- Center for Children and Adolescents, Pediatric Clinic II, University of Duisburg-Essen, Essen, Germany
| | - Isabelle Jordans
- Bundesverband Niere eV (German National Kidney-Patients Association), Mainz, Germany
| | - Clemens Kamrath
- Division of Pediatric Endocrinology & Diabetology, Center of Child and Adolescent Medicine, Justus Liebig University, Giessen, Germany
| | - Markus J Kemper
- Department of Pediatrics, Asklepios Medical School, Hamburg, Germany
| | - Kay Latta
- Clementine Kinderhospital Frankfurt, Frankfurt, Germany
| | - Dominik Müller
- Pediatric Nephrology, Charité Children's Hospital, Berlin, Germany
| | - Jun Oh
- Division of Pediatric Nephrology, Hepatology and Transplantation, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Burkhard Tönshoff
- Department of Pediatrics I, University Children's Hospital, Heidelberg, Germany
| | - Stefanie Weber
- Department of Pediatrics II, University Children's Hospital, Philipps-University Marburg, Marburg, Germany
| | - Lutz T Weber
- Faculty of Medicine and University Hospital Cologne, Pediatric Nephrology, Children's and Adolescents' Hospital, University of Cologne, Cologne, Germany
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George J, Alex S, Thomas ETA, Gracious N, Vineetha NS, Kumar S. Clinical Response and Pattern of B cell Suppression with Single Low Dose Rituximab in Nephrology. KIDNEY360 2020; 1:359-367. [PMID: 35369364 DOI: 10.34067/kid.0000072020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 03/20/2020] [Indexed: 02/08/2023]
Abstract
Background There is no consensus regarding dose and frequency of rituximab in nephrology with extrapolation of doses used in treating lymphoproliferative disorders. There are no guidelines on targeting initial and subsequent doses on the basis of CD19+ B cells. Methods Initially, 100 mg rituximab was given to 42 adults with steroid-dependent nephrotic syndrome (SDNS) and frequently relapsing nephrotic syndrome (FRNS), idiopathic membranous nephropathy (MN), and high-immunologic-risk kidney transplantation. Absolute and percentage levels of CD19 B cells and clinical status were assessed at baseline, days 30, 90, and 180, and at 1 year. Subsequent doses of rituximab were on the basis of CD19 B cell reconstitution and clinical response. Results CD19 B cell percentage decreased from 16.3 ± 7.6 to 0.3 ± 0.3 (P≤0.001), 1.9 ± 1.7 (P≤0.001), and 4.0 ± 4.5 (P=0.005) by 30, 90, and 180 days, respectively. Suppression of CD19 B cell count below 1% at days 30, 90, and 180 was seen in 40 of 42 (95.2%), 18 of 42 (42.9%), and 7 of 42 (16.7%) patients, respectively. Of 30 with SDNS and FRNS followed up for 1 year, 29 (96.7%) went into remission at day 30. Remission was sustained in 23 (76.6%) at day 180 and 21 (70%) at 1 year. There was a significant decrease (P<0.001) in the dose of steroids needed to maintain remission at 180 days after rituximab (0.27 ± 0.02 mg/kg to 0.02 ± 0.00 mg/kg). CD19 B cell percentage at 90 days correlated with relapse (P=0.001; odds ratio 1.42; 95% confidence interval, 1.25 to 2.57). Eighteen (60%) required an additional dose. Of five with MN, four achieved remission by 6 months, which was sustained in three by 1 year. Of the seven kidney transplant recipients, two had antibody-mediated rejections, although CD19 B cells were suppressed even at 1 year. Conclusions Low-dose rituximab induces sustained depletion of CD19 B cells for up to 90 days. Its role in preventing relapses in SDNS, FRNS, MN, and rejection needs further study.
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Affiliation(s)
- Jacob George
- Department of Nephrology, Government Medical College Thiruvananthapuram, Thiruvananthapuram, Kerala, India
| | - Sunu Alex
- Department of Nephrology, Government Medical College Thiruvananthapuram, Thiruvananthapuram, Kerala, India
| | - E T Arun Thomas
- Department of Nephrology, Government Medical College Thiruvananthapuram, Thiruvananthapuram, Kerala, India
| | - Noble Gracious
- Department of Nephrology, Government Medical College Thiruvananthapuram, Thiruvananthapuram, Kerala, India
| | - Nalanda S Vineetha
- Department of Nephrology, Government Medical College Thiruvananthapuram, Thiruvananthapuram, Kerala, India
| | - Sajeev Kumar
- Department of Nephrology, Government Medical College Thiruvananthapuram, Thiruvananthapuram, Kerala, India
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17
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Kallash M, Smoyer WE, Mahan JD. Rituximab Use in the Management of Childhood Nephrotic Syndrome. Front Pediatr 2019; 7:178. [PMID: 31134169 PMCID: PMC6524616 DOI: 10.3389/fped.2019.00178] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 04/17/2019] [Indexed: 12/19/2022] Open
Abstract
Childhood nephrotic syndrome is a challenging and often persistent renal disorder, and its incidence varies between different ethnicities and regions. Corticosteroids have been the main treatment for decades and are effective in most children with idiopathic NS, although 10-15% of these children become steroid resistant. Furthermore, some initially steroid sensitive children follow a steroid dependent or frequently relapsing course and are therefore at increased risk for developing steroid toxicity. In such children, alternative immunosuppressive medications are used to induce and/or maintain remission of NS. One such drug, rituximab, is a monoclonal antibody directed against the B lymphocyte CD20 marker which induces depletion of B cells, and has shown promising results in the management of NS in children. In this review, we summarize recent studies on the efficacy and safety of rituximab in the different types of childhood nephrotic syndrome, the known and potential mechanisms of action of rituximab, its possible complications and side effects, and the available and potential biomarkers of rituximab activity.
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Affiliation(s)
- Mahmoud Kallash
- Division of Nephrology, Nationwide Children's Hospital, The Ohio State University College of Medicine, Columbus, OH, United States
| | - William E Smoyer
- Division of Nephrology, Nationwide Children's Hospital, The Ohio State University College of Medicine, Columbus, OH, United States
| | - John D Mahan
- Division of Nephrology, Nationwide Children's Hospital, The Ohio State University College of Medicine, Columbus, OH, United States
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