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Nature Reviews. Rheumatology Apr 2023Systemic sclerosis (SSc) is a rare autoimmune connective tissue disease with multi-organ involvement, fibrosis and vasculopathy. Treatment in SSc, including early... (Review)
Review
Systemic sclerosis (SSc) is a rare autoimmune connective tissue disease with multi-organ involvement, fibrosis and vasculopathy. Treatment in SSc, including early diffuse cutaneous SSc (dcSSc) and the use of organ-specific therapies, has improved, as evident from randomized clinical trials. Treatments for early dcSSc include immunosuppressive agents such as mycophenolate mofetil, methotrexate, cyclophosphamide, rituximab and tocilizumab. Patients with rapidly progressive early dcSSc might be eligible for autologous haematopoietic stem cell transplantation, which can improve survival. Morbidity from interstitial lung disease and pulmonary arterial hypertension is improving with the use of proven therapies. Mycophenolate mofetil has surpassed cyclophosphamide as the initial treatment for SSc-interstitial lung disease. Nintedanib and possibly perfinidone can be considered in SSc pulmonary fibrosis. Pulmonary arterial hypertension is frequently treated with initial combination therapy (for example, with phosphodiesterase 5 inhibitors and endothelin receptor antagonists) and, if necessary, the addition of a prostacyclin analogue. Raynaud phenomenon and digital ulcers are treated with dihydropyridine calcium channel blockers (especially nifedipine), then phosphodiesterase 5 inhibitors or intravenous iloprost. Bosentan can reduce the development of new digital ulcers. Trial data for other manifestations are mostly lacking. Research is needed to develop targeted and highly effective treatments, best practices for organ-specific screening and early intervention, and sensitive outcome measurements.
Topics: Humans; Mycophenolic Acid; Pulmonary Arterial Hypertension; Phosphodiesterase 5 Inhibitors; Scleroderma, Systemic; Cyclophosphamide; Lung Diseases, Interstitial
PubMed: 36849541
DOI: 10.1038/s41584-023-00909-5 -
Handbook of Experimental Pharmacology 2020The goal of immunosuppressive therapy post-transplantation in pediatric renal transplant recipients is to prevent acute and chronic rejection while minimizing drug side...
The goal of immunosuppressive therapy post-transplantation in pediatric renal transplant recipients is to prevent acute and chronic rejection while minimizing drug side effects. Most therapies alter immune response mechanisms but are not immunologically specific, and a careful balance is required to find the dose that prevents rejection of the graft while minimizing the risks of overimmunosuppression leading to infection and cancer. While this chapter because of space constraints focuses on immunosuppressive therapy in pediatric renal transplant recipients, many aspects can be applied on pediatric recipients of other solid organ transplants such as the liver and heart. The major maintenance immunosuppressive agents currently used in various combination regimens are tacrolimus, cyclosporine, mycophenolate mofetil, azathioprine, everolimus, sirolimus, and glucocorticoids (steroids). Although data from adult renal transplantation trials are used to help guide management decisions in pediatric patients, immunosuppressive therapy in pediatric renal transplant recipients often must be modified because of the unique dosage requirements and clinical effects of these agents in children, including their impact on growth and development. The optimal immunosuppressive therapy post-transplant is not established. The goal remains to find the best combination of immunosuppressive agents that optimizes allograft survival by preventing acute rejection while limiting drug toxicities.
Topics: Adult; Child; Cyclosporine; Drug Therapy, Combination; Graft Rejection; Humans; Immunosuppressive Agents; Mycophenolic Acid; Tacrolimus
PubMed: 31820175
DOI: 10.1007/164_2019_331 -
JAMA Jun 2023Autoimmune disorders can affect various organs and if refractory, can be life threatening. Recently, CD19-targeting-chimeric antigen receptor (CAR) T cells were...
IMPORTANCE
Autoimmune disorders can affect various organs and if refractory, can be life threatening. Recently, CD19-targeting-chimeric antigen receptor (CAR) T cells were efficacious as an immune suppressive agent in 6 patients with refractory systemic lupus erythematosus and in 1 patient with antisynthetase syndrome.
OBJECTIVE
To test the safety and efficacy of CD19-targeting CAR T cells in a patient with severe antisynthetase syndrome, a complex autoimmune disorder with evidence for B- and T-cell involvement.
DESIGN, SETTING, AND PARTICIPANTS
This case report describes a patient with antisynthetase syndrome with progressive myositis and interstitial lung disease refractory to available therapies (including rituximab and azathioprine), who was treated with CD19-targeting CAR T cells in June 2022 at University Hospital Tübingen in Tübingen, Germany, with the last follow-up in February 2023. Mycophenolate mofetil was added to the treatment to cotarget CD8+ T cells, hypothesized to contribute to disease activity.
EXPOSURE
Prior to treatment with CD19-targeting CAR T cells, the patient received conditioning therapy with fludarabine (25 mg/m2 [5 days before until 3 days before]) and cyclophosphamide (1000 mg/m2 [3 days before]) followed by infusion of CAR T cells (1.23×106/kg [manufactured by transduction of autologous T cells with a CD19 lentiviral vector and amplification in the CliniMACS Prodigy system]) and mycophenolate mofetil (2 g/d) 35 days after CD19-targeting CAR T-cell infusion.
MAIN OUTCOMES AND MEASURES
The patient's response to therapy was followed by magnetic resonance imaging of the thigh muscle, Physician Global Assessment, functional muscle and pulmonary tests, and peripheral blood quantification of anti-Jo-1 antibody levels, lymphocyte subsets, immunoglobulins, and serological muscle enzymes.
RESULTS
Rapid clinical improvement was observed after CD19-targeting CAR T-cell infusion. Eight months after treatment, the patient's scores on the Physician Global Assessment and muscle and pulmonary function tests improved, and there were no detectable signs of myositis on magnetic resonance imaging. Serological muscle enzymes (alanine aminotransferase, aspartate aminotransferase, creatinine kinase, and lactate dehydrogenase), CD8+ T-cell subsets, and inflammatory cytokine secretion in the peripheral blood mononuclear cells (interferon gamma, interleukin 1 [IL-1], IL-6, and IL-13) were all normalized. Further, there was a reduction in anti-Jo-1 antibody levels and a partial recovery of IgA (to 67% of normal value), IgG (to 87%), and IgM (to 58%).
CONCLUSIONS AND RELEVANCE
CD19-targeting CAR T cells directed against B cells and plasmablasts deeply reset B-cell immunity. Together with mycophenolate mofetil, CD19-targeting CAR T cells may break pathologic B-cell, as well as T-cell responses, inducing remission in refractory antisynthetase syndrome.
Topics: Humans; Antigens, CD19; Leukocytes, Mononuclear; Lung Diseases, Interstitial; Mycophenolic Acid; Myositis; Receptors, Antigen, T-Cell; Receptors, Chimeric Antigen; Immunotherapy, Adoptive; Cyclophosphamide; Immunosuppressive Agents
PubMed: 37367976
DOI: 10.1001/jama.2023.8753 -
Nature Reviews. Rheumatology Mar 2020The introduction of biologic DMARDs into rheumatology has resulted in a substantial reduction of the burden of many rheumatic diseases. In the slipstream of the success... (Review)
Review
The introduction of biologic DMARDs into rheumatology has resulted in a substantial reduction of the burden of many rheumatic diseases. In the slipstream of the success achieved with these biologic DMARDs, some conventional immunosuppressive drugs have also found use in new indications. Notably, mycophenolate mofetil, azathioprine and tacrolimus have made their way from solid organ transplantation drugs to become useful assets in rheumatology practice. Mycophenolate mofetil and azathioprine inhibit the purine pathway and subsequently diminish cell proliferation. Both drugs have a pivotal role in the treatment of various rheumatic diseases, including lupus nephritis. Tacrolimus inhibits lymphocyte activation by inhibiting the calcineurin pathway. Mycophenolate mofetil and tacrolimus are, among other indications, increasingly being recognized as useful drugs in the treatment of interstitial lung disease in systemic rheumatic diseases and skin fibrosis in systemic sclerosis. A broad array of trials with mycophenolate mofetil, azathioprine and/or tacrolimus are ongoing within the field of rheumatology that might provide further novel avenues for the use of these drugs. In this Review, we discuss the historical perspective, pharmacodynamics, clinical indications and novel avenues for mycophenolate mofetil, azathioprine and tacrolimus in rheumatology.
Topics: Antirheumatic Agents; Azathioprine; Drug Therapy, Combination; Enzyme Inhibitors; Humans; Immunosuppressive Agents; Mycophenolic Acid; Rheumatic Diseases; Rheumatology; Tacrolimus
PubMed: 32055040
DOI: 10.1038/s41584-020-0374-8 -
Cleveland Clinic Journal of Medicine May 2023C3 glomerulopathy (C3G) is a rare kidney disease that causes kidney dysfunction as a result of dysregulation of the complement system alternate pathway (AP). C3G...
C3 glomerulopathy (C3G) is a rare kidney disease that causes kidney dysfunction as a result of dysregulation of the complement system alternate pathway (AP). C3G encompasses 2 separate disorders, C3 glomerulonephritis and dense deposit disease. The presentation and natural history is variable and kidney biopsy is needed to confirm the diagnosis. The overall prognosis is poor with high recurrence rates after transplant. A better understanding of C3G is needed as is high-quality evidence to guide therapy, which currently includes mycophenolate mofetil and steroids for moderate to severe disease, and terminal complement blockade with anti-C5 therapy in unresponsive cases.
Topics: Humans; Kidney Diseases; Kidney; Mycophenolic Acid
PubMed: 37225259
DOI: 10.3949/ccjm.90.e-s1.01 -
American Journal of Kidney Diseases :... Sep 2022The management of immunosuppression utilized in glomerular diseases requires highly nuanced care. Timely recognition and management of these disorders is essential to... (Review)
Review
The management of immunosuppression utilized in glomerular diseases requires highly nuanced care. Timely recognition and management of these disorders is essential to mitigate the extent of kidney damage. This involves being cognizant of the various classes of immunosuppression, which includes alkylating agents, antimetabolites, calcineurin inhibitors, anti-CD20 therapy, complement inhibitors, corticosteroids, and intravenous immunoglobulin. The mechanisms of action of these drugs, along with associated pharmacokinetics and pharmacodynamics, facets of monitoring, and adverse effects are important aspects with which nephrologists are required to be well versed. In addition, an understanding of therapeutic decisions such as induction and maintenance regimens in the setting of glomerular disease and alteration based on trajectory of disease and subsequent response is imperative. The overarching principle of these strategies of immunosuppression is to achieve a balance of disease mitigation without exposure to inadvertent harm. Special groups such as pregnant women, elderly patients, and patients treated with dialysis are especially susceptible to immunosuppression and thus need highly weighed therapeutic strategies and enhanced surveillance of adverse effects.
Topics: Aged; Curriculum; Female; Humans; Immunosuppression Therapy; Immunosuppressive Agents; Kidney Diseases; Mycophenolic Acid; Pregnancy
PubMed: 35440396
DOI: 10.1053/j.ajkd.2021.12.011 -
Handbook of Experimental Pharmacology 2022Antiproliferative agents include Mycophenolic acid and Azathioprine (which is less commonly used unless in certain conditions). They were initially identified for use in...
Antiproliferative agents include Mycophenolic acid and Azathioprine (which is less commonly used unless in certain conditions). They were initially identified for use in autoimmune and cancer research due to their role in disruption of cellular replication. They have now become the cornerstone of antirejection maintenance therapy in solid organ transplant. In this chapter we will describe the major times that lead to discovery, mechanisms of action, side effects, use during pregnancy and the major clinical trials.
Topics: Graft Rejection; Humans; Immunosuppressive Agents; Mycophenolic Acid
PubMed: 34697667
DOI: 10.1007/164_2021_556 -
The New England Journal of Medicine Jun 2021Rituximab and mycophenolate mofetil are used to treat pemphigus vulgaris, but they have not been adequately compared in clinical trials. (Comparative Study)
Comparative Study Randomized Controlled Trial
BACKGROUND
Rituximab and mycophenolate mofetil are used to treat pemphigus vulgaris, but they have not been adequately compared in clinical trials.
METHODS
In a randomized, controlled trial, we assigned patients with moderate-to-severe pemphigus vulgaris in a 1:1 ratio to receive intravenous rituximab (1000 mg on days 1, 15, 168, and 182) or oral mycophenolate mofetil (2 g per day), in addition to an oral glucocorticoid administered on the same tapering schedule in the two groups. The primary end point was sustained complete remission at week 52, defined as the healing of lesions with no new active lesions, as reflected by a Pemphigus Disease Area Index (PDAI) activity score of 0 (on a scale of 0 to 250, with higher scores indicating greater disease severity), for at least 16 weeks without the use of glucocorticoids. Secondary end points were the cumulative dose of glucocorticoids, the number of disease flares, and the change from baseline in the score on the Dermatology Life Quality Index (DLQI; scores range from 0 to 30, with higher scores indicating greater impairment).
RESULTS
Of the 135 patients who underwent randomization, 67 were assigned to receive rituximab and 68 to receive mycophenolate mofetil. The primary outcome was assessed in the modified intention-to-treat population: 62 patients in the rituximab group and 63 in the mycophenolate mofetil group. The median PDAI activity scores at baseline were 22.7 in the rituximab group and 18.3 in the mycophenolate mofetil group. At week 52, sustained complete remission was observed in 25 patients (40%) in the rituximab group and in 6 (10%) in the mycophenolate mofetil group (difference, 31 percentage points; 95% confidence interval [CI], 15 to 45; P<0.001). The mean cumulative glucocorticoid dose during the 52-week treatment period was 3545 mg in the rituximab group and 5140 mg in the mycophenolate mofetil group (difference, -1595 mg; 95% CI, -2838 to -353; P<0.001). There were 6 disease flares in the rituximab group and 44 in the mycophenolate mofetil group (adjusted rate ratio, 0.12; 95% CI, 0.05 to 0.29; P<0.001). The mean change in DLQI score was -8.87 points and -6.00 points, respectively (difference, -2.87 points; 95% CI, -4.58 to -1.17; P = 0.001). Serious adverse events occurred in 15 of 67 patients (22%) in the rituximab group and in 10 of 68 (15%) in the mycophenolate mofetil group.
CONCLUSIONS
Rituximab was superior to mycophenolate mofetil in producing sustained complete remission at 52 weeks in patients with pemphigus vulgaris. Rituximab resulted in a greater reduction in glucocorticoid use than mycophenolate mofetil, but more patients in the rituximab group had serious adverse events. Further trials are needed to determine the comparative efficacy and safety of rituximab and mycophenolate mofetil beyond 52 weeks of treatment. (Funded by F. Hoffmann-La Roche; PEMPHIX ClinicalTrials.gov number, NCT02383589.).
Topics: Administration, Oral; Adult; Aged; Double-Blind Method; Drug Therapy, Combination; Female; Glucocorticoids; Humans; Intention to Treat Analysis; Male; Middle Aged; Mycophenolic Acid; Pemphigus; Remission Induction; Rituximab
PubMed: 34097368
DOI: 10.1056/NEJMoa2028564 -
Therapeutic Drug Monitoring Apr 2021When mycophenolic acid (MPA) was originally marketed for immunosuppressive therapy, fixed doses were recommended by the manufacturer. Awareness of the potential for a... (Review)
Review
When mycophenolic acid (MPA) was originally marketed for immunosuppressive therapy, fixed doses were recommended by the manufacturer. Awareness of the potential for a more personalized dosing has led to development of methods to estimate MPA area under the curve based on the measurement of drug concentrations in only a few samples. This approach is feasible in the clinical routine and has proven successful in terms of correlation with outcome. However, the search for superior correlates has continued, and numerous studies in search of biomarkers that could better predict the perfect dosage for the individual patient have been published. As it was considered timely for an updated and comprehensive presentation of consensus on the status for personalized treatment with MPA, this report was prepared following an initiative from members of the International Association of Therapeutic Drug Monitoring and Clinical Toxicology (IATDMCT). Topics included are the criteria for analytics, methods to estimate exposure including pharmacometrics, the potential influence of pharmacogenetics, development of biomarkers, and the practical aspects of implementation of target concentration intervention. For selected topics with sufficient evidence, such as the application of limited sampling strategies for MPA area under the curve, graded recommendations on target ranges are presented. To provide a comprehensive review, this report also includes updates on the status of potential biomarkers including those which may be promising but with a low level of evidence. In view of the fact that there are very few new immunosuppressive drugs under development for the transplant field, it is likely that MPA will continue to be prescribed on a large scale in the upcoming years. Discontinuation of therapy due to adverse effects is relatively common, increasing the risk for late rejections, which may contribute to graft loss. Therefore, the continued search for innovative methods to better personalize MPA dosage is warranted.
Topics: Area Under Curve; Consensus; Drug Monitoring; Graft Rejection; Humans; Immunosuppressive Agents; Mycophenolic Acid; Organ Transplantation
PubMed: 33711005
DOI: 10.1097/FTD.0000000000000871 -
Arthritis Research & Therapy Jul 2023Many clinical trial results are available to inform best practices in the treatment of patients with connective tissue disease-associated interstitial lung disease... (Review)
Review
Many clinical trial results are available to inform best practices in the treatment of patients with connective tissue disease-associated interstitial lung disease (CTD-ILD).Herein, we summarize the results of clinical trials, including patient-reported outcome instruments, for the treatment of patients with ILD associated with systemic sclerosis (SSc/scleroderma), rheumatoid arthritis, and idiopathic inflammatory myositis, the diseases with the most available data. For SSc-ILD, the US Food and Drug Administration approved nintedanib (a tyrosine kinase inhibitor) in 2020 and subcutaneous tocilizumab (an IL-6 receptor monoclonal antibody) in 2021. Rituximab was recently shown to have similar efficacy but better tolerability than intravenous cyclophosphamide (CYC) for CTD-ILD therapy. Scleroderma Lung Study II, conducted in patients with SSc-ILD, showed that oral CYC and mycophenolate mofetil (MMF) were comparable in their effects on lung function, but MMF was better tolerated. The increasing treatment armamentarium for patients with CTD-ILD offers physicians new opportunities to improve patient outcomes.
Topics: Humans; Immunosuppressive Agents; Lung Diseases, Interstitial; Connective Tissue Diseases; Cyclophosphamide; Mycophenolic Acid; Scleroderma, Systemic; Scleroderma, Localized; Lung
PubMed: 37422652
DOI: 10.1186/s13075-023-03090-y