eliglustat-tartrate and Kidney-Diseases

Topics: alpha-Galactosidase; Early Diagnosis; Enzyme Replacement Therapy; Fabry Disease; Genetic Predisposition to Disease; Humans; Isoenzymes; Kidney Diseases; Mutation; Phenotype; Predictive Value of Tests; Prognosis; Recombinant Proteins; Risk Assessment; Risk Factors

Fabry disease is a progressive devastating disease caused by absent or deficient activity of lysosomal enzyme alpha-galactosidase A, with progressive accumulation of globotriaosylceramide (GL-3) within lysosomes in a different cell types. Accumulation of GL-3 and related glycosphingolipids in different cell types may create diverse clinical picture depending on the organ which is dominantly affected. Renal pathology progresses in severity with aging. Globotryaosil ceramide deposits may be found in different cell types within the kidney. Deposition within the glomeruli may be found in endothelial cells, mesangial cells, interstitial cells, with the highest level found within the podocytes. Although Fabry disease is not curable at the moment, availability of enzyme replacement therapy made it possible to treat this group of patients. Two formulations of recombinant human alpha-galactosidase A are present on the market: agalsidase alfa and agalsidase beta. Longer follow-up period is necessary to estimate the impact of ERT on mortality. Patients with end-stage renal disease caused by Fabry disease could be safely treated with enzyme replacement therapy regardless of the method of renal replacement therapy.

Topics: alpha-Galactosidase; Enzyme Replacement Therapy; Fabry Disease; Female; Humans; Isoenzymes; Kidney; Kidney Diseases; Male; Recombinant Proteins; Sex Characteristics; Treatment Outcome

Kidney involvement in Fabry disease is frequent and severe since it leads to terminal renal failure in the fifth decode. Enzyme replacement therapy was evaluated on kidney function in two phase III trials, each performed with one of the two enzymes available (agalsidase beta and agalsidase alpha). A phase IV trial was also conducted with agalsidase beta. Results of those three clinical trials were consistent, evidencing stabilization of renal function and clearance of the sphingolipid deposits in most of the kidney cells. Enzyme replacement therapy should be given early since among patients with kidney failure, it appeared to be less efficient.

Topics: alpha-Galactosidase; Clinical Trials as Topic; Fabry Disease; Humans; Isoenzymes; Kidney Diseases

Fabry disease is an X-linked metabolic storage disorder due to the deficiency of lysosomal alpha-galactosidase A, and the subsequent accumulation of glycosphingolipids, primarily globotriaosylceramide, throughout the body. Males with classical Fabry disease develop early symptoms including pain and hypohidrosis by the second decade of life reflecting disease progression in the peripheral and autonomic nervous systems. An insidious cascade of disease processes ultimately results in severe renal, cardiac, and central nervous system complications in adulthood. The late complications are the main cause of late morbidity, as well as premature mortality. Disease presentation in female heterozygotes may be as severe as in males although women may also remain asymptomatic. The recent introduction of enzyme replacement therapy to address the underlying pathophysiology of Fabry disease has focused attention on the need for comprehensive, multidisciplinary evaluation and management of the multi-organ system involvement. In anticipation of evidence-based recommendations, an international panel of physicians with expertise in Fabry disease has proposed guidelines for the recognition, evaluation, and surveillance of disease-associated morbidities, as well as therapeutic strategies, including enzyme replacement and other adjunctive therapies, to optimize patient outcomes.

Topics: Adult; alpha-Galactosidase; Child; Fabry Disease; Female; Gastrointestinal Diseases; Heart Diseases; Humans; Isoenzymes; Kidney Diseases; Lung Diseases; Male; Nervous System Diseases; Organ Specificity; Otorhinolaryngologic Diseases; Practice Guidelines as Topic

Anderson-Fabry disease is an X-linked recessive lysosomal storage disease resulting from deficient alpha-galactosidase A activity. The conception of the disease has changed within the last decade. Studies of the last years have shown that the disease is not limited to the classical full-blown manifestation in affected males, which is well known since more than a century, but may also occur in carrier females. The phenomenology may differ in severity and kind of organ manifestation. Cardiac and renal variants with solely disease manifestation of these organs have also been described in an increasing number. It is likely that a spectrum exists regarding alpha-galactosidase A activity in both genders on the one hand, and an additional one regarding the severity and the number of organs affected on the other. The purpose of this review is to sharpen physicians' perception of this disease. Early and accurate diagnosis is mandatory considering that this disorder is now, after introduction of the novel enzyme replacement therapy, a treatable disease.

Topics: alpha-Galactosidase; Eye Diseases; Fabry Disease; Female; Heart Diseases; Humans; Isoenzymes; Kidney Diseases; Male; Pain

Fabry disease, an X-linked lysosomal storage disorder, causes intracellular accumulation of glycosphingolipids leading to progressive renal, cardiovascular, and cerebrovascular disease, and premature death.. This longitudinal Fabry Registry study analyzed data from patients with Fabry disease to determine the incidence and type of severe clinical events following initiation of enzyme replacement therapy (ERT) with agalsidase beta, as well as risk factors associated with occurrence of these events. Severe events assessed included chronic dialysis, renal transplantation, cardiac events, stroke, and death.. The analyses included 969 male and 442 female Fabry patients. The mean age at first agalsidase beta infusion was 35 and 44, and median treatment follow-up 4.3years and 3.2years, respectively. Among males, cardiac events were the most common on-ERT events, followed by renal, stroke, and non-cardiac death. Among females, cardiac events were also most common followed by stroke and renal events. Patients with on-ERT events had significantly more advanced cardiac and renal disease at baseline as compared with patients without on-ERT events. Severe events were also associated with older age at ERT initiation (males and females), a history of pre-ERT events (females; approaching statistical significance in males), and a higher urinary protein/creatinine ratio (females). Approximately 65% of patients with pre-ERT events did not experience subsequent on-ERT events. Of patients without pre-ERT events, most (84% of males, 92% of females) remained event-free.. Patients with on-ERT severe events had more advanced Fabry organ involvement at baseline than those without such events and patients who initiated ERT at a younger age had less residual risk of on-ERT events. The observed patterns of residual risk may aid clinicians in multidisciplinary monitoring of male and female patients with Fabry disease receiving ERT, and in determining the need for administration of adjunctive therapies.

Topics: Adult; alpha-Galactosidase; Child; Enzyme Replacement Therapy; Fabry Disease; Female; Humans; Isoenzymes; Kidney Diseases; Kidney Transplantation; Male; Middle Aged; Registries; Risk Factors; Severity of Illness Index; Stroke

Fabry disease results from deficient α-galactosidase A activity and globotriaosylceramide accumulation causing renal insufficiency, strokes, hypertrophic cardiomyopathy and early demise. We assessed the 10-year outcome of recombinant α-galactosidase A therapy.. The outcomes (severe clinical events, renal function, cardiac structure) of 52/58 patients with classic Fabry disease from the phase 3 clinical trial and extension study, and the Fabry Registry were evaluated. Disease progression rates for patients with low renal involvement (LRI, n=32) or high renal involvement (HRI, n=20) at baseline were assessed.. 81% of patients (42/52) did not experience any severe clinical event during the treatment interval and 94% (49/52) were alive at the end of the study period. Ten patients reported a total of 16 events. Patients classified as LRI started therapy 13 years younger than HRI (mean 25 years vs 38 years). Mean slopes for estimated glomerular filtration rate for LRI and HRI were -1.89 mL/min/1.73 m(2)/year and -6.82 mL/min/1.73 m(2)/year, respectively. Overall, the mean left ventricular posterior wall thickness and interventricular septum thickness remained unchanged and normal. Patients who initiated treatment at age ≥ 40 years exhibited significant increase in left ventricular posterior wall thickness and interventricular septum thickness. Mean plasma globotriaosylceramide normalised within 6 months.. This 10-year study documents the effectiveness of agalsidase beta (1 mg/kg/2 weeks) in patients with Fabry disease. Most patients remained alive and event-free. Patients who initiated treatment at a younger age and with less kidney involvement benefited the most from therapy. Patients who initiated treatment at older ages and/or had advanced renal disease experienced disease progression.

Topics: Adolescent; Adult; alpha-Galactosidase; Enzyme Replacement Therapy; Fabry Disease; Female; Follow-Up Studies; Humans; Isoenzymes; Kidney Diseases; Male; Middle Aged; Recombinant Proteins; Treatment Outcome; Young Adult

Fabry disease (alpha-galactosidase A deficiency) is a rare, X-linked lysosomal storage disorder that can cause early death from renal, cardiac, and cerebrovascular involvement.. To see whether agalsidase beta delays the onset of a composite clinical outcome of renal, cardiovascular, and cerebrovascular events and death in patients with advanced Fabry disease.. Randomized (2:1 treatment-to-placebo randomization), double-blind, placebo-controlled trial.. 41 referral centers in 9 countries.. 82 adults with mild to moderate kidney disease; 74 of whom were protocol-adherent.. Intravenous infusion of agalsidase beta (1 mg per kg of body weight) or placebo every 2 weeks for up to 35 months (median, 18.5 months).. The primary end point was the time to first clinical event (renal, cardiac, or cerebrovascular event or death). Six patients withdrew before reaching an end point: 3 to receive commercial therapy and 3 due to positive or inconclusive serum IgE or skin test results. Three patients assigned to agalsidase beta elected to transition to open-label treatment before reaching an end point.. Thirteen (42%) of the 31 patients in the placebo group and 14 (27%) of the 51 patients in the agalsidase-beta group experienced clinical events. Primary intention-to-treat analysis that adjusted for an imbalance in baseline proteinuria showed that, compared with placebo, agalsidase beta delayed the time to first clinical event (hazard ratio, 0.47 [95% CI, 0.21 to 1.03]; P = 0.06). Secondary analyses of protocol-adherent patients showed similar results (hazard ratio, 0.39 [CI, 0.16 to 0.93]; P = 0.034). Ancillary subgroup analyses found larger treatment effects in patients with baseline estimated glomerular filtration rates greater than 55 mL/min per 1.73 m2 (hazard ratio, 0.19 [CI, 0.05 to 0.82]; P = 0.025) compared with 55 mL/min per 1.73 m2 or less (hazard ratio, 0.85 [CI, 0.32 to 2.3]; P = 0.75) (formal test for interaction, P = 0.09). Most treatment-related adverse events were mild or moderate infusion-associated reactions, reported by 55% of patients in the agalsidase-beta group and 23% of patients in the placebo group.. The study sample was small. Only one third of the patients experienced clinical events, and some patients withdrew before experiencing any event.. Agalsidase-beta therapy slowed progression to the composite clinical outcome of renal, cardiac, and cerebrovascular complications and death compared with placebo in patients with advanced Fabry disease. Therapeutic intervention before irreversible organ damage may provide greater clinical benefit.

Topics: Adult; Aged; alpha-Galactosidase; Cardiovascular Diseases; Cerebrovascular Disorders; Disease Progression; Double-Blind Method; Fabry Disease; Female; Glomerular Filtration Rate; Humans; Isoenzymes; Kidney Diseases; Male; Middle Aged; Proteinuria; Treatment Outcome

Fabry disease, an inherited deficiency of the lysosomal enzyme alpha-galactosidase A, causes progressive intralysosomal accumulation of globotriaosylceramide (GL-3) and premature death from renal, cardiac, and cerebrovascular manifestations. To determine the long-term safety and efficacy of recombinant human alpha-galactosidase A, an open-label, phase III extension study was conducted, involving 58 patients who had classic Fabry disease and completed a 20-wk, double-blind, randomized, placebo-controlled, phase III study of agalsidase beta and were transitioned to an extension trial to receive biweekly 1 mg/kg agalsidase beta for up to an additional 54 mo. GL-3 accumulation was evaluated in the capillary endothelia of the skin, kidney, and heart. Renal function was assessed. By month 54, all patients with optional kidney biopsies (n = 8) maintained complete GL-3 clearance in renal capillary endothelial cells and multiple cell types. Continued, complete clearance of skin (31 of 36) and heart (six of eight) capillary endothelium was demonstrated. Mean plasma GL-3 levels remained decreased in the normal range. Median serum creatinine and estimated GFR remained stable (normal) in patients with renal data at month 54 (n = 41). Six patients had renal disease progression; most (four of six) were older than 40 yr and had significant proteinuria at baseline and evidence of sclerotic glomeruli pretreatment. Adverse events were generally mild and unrelated to treatment. The most common treatment-related adverse events were infusion-associated reactions, which decreased over time. Long-term agalsidase beta therapy stabilizes renal function in patients without renal involvement at baseline, maintains reduction of plasma GL-3, and sustains GL-3 clearance in capillary endothelial cells and multiple renal cell types.

Topics: Adolescent; Adult; alpha-Galactosidase; Disease Progression; Double-Blind Method; Fabry Disease; Female; Humans; Isoenzymes; Kidney; Kidney Diseases; Male; Middle Aged; Myocardium; Placebos; Quality of Life; Skin; Time; Trihexosylceramides

This report describes an open-label, nonrandomized, prospective evaluation of the effects of angiotensin-converting enzyme inhibitor and angiotensin receptor blocker therapy on patients who have Fabry disease and also received enzyme replacement therapy with agalsidase-beta, given at 1 mg/kg body wt every 2 wk. Previous placebo-controlled phase III and phase IV trials with agalsidase-beta demonstrated clearing of globotriaosylceramide from vascular endothelia but little effect on proteinuria or progressive loss of kidney function in patients with Fabry disease and severe chronic kidney disease marked by overt proteinuria and/or estimated GFR <60 ml/min per 1.73 m2. Angiotensin-converting enzyme inhibitor and/or angiotensin receptor blocker therapy is the standard of care for patients with proteinuric kidney diseases, but their use is challenging in patients with Fabry disease and low or low-normal baseline systemic BP. A group of patients with Fabry disease were treated with antiproteinuric therapy, in conjunction with agalsidase-beta; sustained reductions in proteinuria with stabilization of kidney function were achieved in a group of six patients who had severe Fabry nephropathy; the progression rate was -0.23 +/- 1.12 ml/min per 1.73 m2 per yr with 30 mo of follow-up.

Topics: Adult; alpha-Galactosidase; Angiotensin II Type 1 Receptor Blockers; Angiotensin-Converting Enzyme Inhibitors; Blood Pressure; Creatinine; Drug Administration Schedule; Drug Therapy, Combination; Fabry Disease; Female; Glomerular Filtration Rate; Humans; Isoenzymes; Kidney; Kidney Diseases; Male; Middle Aged; Prospective Studies; Proteinuria; Severity of Illness Index; Treatment Outcome

Fabry disease is a rare inborn error of the enzyme α-galactosidase (Α-Gal) and results in lysosomal substrate accumulation in tissues with a wide range of clinical presentations. The disease has attracted a lot of interest over the last years and several issues has been discovered up to now leading to increasing knowledge and awareness of the disease. However, several aspects are still unclear and under investigation. Thus, the new challenges that physicians encounter are the discovering of the pathogenic mechanisms, the neutralising antibodies to ERT, the long-term efficacy of therapies. In this article, we summarise and review the latest developments in the science community regarding diagnosis, management and monitoring of Fabry disease concerning in particular its physiopathology, novel biomarkers, antibodies development and novel treatment options.

Topics: 1-Deoxynojirimycin; alpha-Galactosidase; Disease Progression; Enzyme Replacement Therapy; Fabry Disease; Female; Glomerulosclerosis, Focal Segmental; Glycolipids; Heterozygote; Humans; Isoenzymes; Kidney Diseases; Male; Oxidative Stress; Podocytes; Recombinant Proteins; Sex Factors; Sphingolipids; Trihexosylceramides

Fabry disease is an X-linked glycosphingolipidosis caused by deficient synthesis of the enzyme α-galactosidase A, which results in accumulations of globotriaosylceramide (GL-3) in systemic tissues. Nephropathy is a dominant feature of Fabry disease. It still remains unclear how the nephropathy progresses. Recombinant agalsidase replacement therapy is currently the only approved, specific therapy for Fabry disease. The optimal dose of replacement enzyme also still remains unclear. The worldwide shortage of agalsidase-β in 2009 forced dose reduction of administration. It showed that the proteinuria emerged like surges, followed by temporary plasma GL-3 elevations in the early stages of classic Fabry disease. Additionally, it also showed that 1 mg/kg of agalsidase-β every other week could clear the GL-3 accumulations from podocytes and was required to maintain negative proteinuria and normal plasma GL-3 levels.. This observation of a young patient with classic Fabry disease about 5 years reveals that the long-term, low-dose agalsidase-β caused proteinuria surges, but not persistent proteinuria, followed by temporary plasma GL-3 elevations, and agalsidase-β at 1 mg/kg every other week could clear accumulated GL-3 from podocytes and was required to maintain normal urinalysis and plasma GL-3 levels.

Topics: Adolescent; alpha-Galactosidase; Enzyme Replacement Therapy; Fabry Disease; Humans; Isoenzymes; Kidney Diseases; Male; Podocytes; Proteinuria; Trihexosylceramides

Fabry disease is an X-linked lysosomal disorder caused by decreased activity of α-galactosidase A (GLA). Consequent accumulation of globotriaosylceramide (GL-3) in lysosomes results in damage to a variety of organs, including the kidneys. Enzyme replacement therapy (ERT) is an effective treatment, but whether it should be started before organ damage is evident is a matter of debate.. A 10-year-old boy who complained of severe sole pain for 3 years had been misdiagnosed with juvenile idiopathic arthritis. Further investigations revealed decreased GLA activity and a M1T mutation in the GLA gene causing protein truncation, suggestive of Fabry disease. Despite normal renal function and urinalysis, renal biopsy showed abnormal structure, with marked accumulation of GL-3 in podocytes, partial effacement of foot processes and irregularly reduced expression of nephrin in the slit diaphragm. After 1 year of ERT with 1 mg/kg agalsidase beta once every 2 weeks, his pain had resolved with ERT combined with carbamazepine and pregabalin. After 3 years of the ERT, repeat biopsy showed little renal GL-3 deposition, resolution of foot process effacement, and a dramatic improvement in nephrin expression.. There may be a window of opportunity in which pain and renal injury can be addressed in the early stages of Fabry disease. Early initiation of ERT should therefore be considered for children with Fabry disease.

Topics: alpha-Galactosidase; Child; Enzyme Replacement Therapy; Fabry Disease; Humans; Isoenzymes; Kidney Diseases; Male; Podocytes

Nephropathy is an important feature of classical Fabry disease, which results in alpha-galactosidase A deficiency and cellular globotriaosylceramide accumulation. We report the safety and efficacy of antiproteinuric therapy with ACE inhibitors or angiotensin II receptor blockers (ARBs) in a study of classical Fabry patients receiving recombinant agalsidase-beta therapy.. The goal was maintenance of urine protein to creatinine ratio (UPCR) <0.5 g/g or a 50% reduction in baseline UPCR for 24 patients at eight study sites. The change in estimated glomerular filtration rate (eGFR) was assessed over 21 months of treatment.. 18 out of 24 patients achieved the UPCR goal with eGFR slopes that were significantly better than six patients who did not achieve the UPCR goal (-3.6 (-4.8 to -1.1) versus -7.0 (-9.0 to -5.6) mL/min/1.73 m(2)/year, respectively, p=0.018). Despite achieving the UPCR goal, 67% (12/18 patients) still progressed with an eGFR slope <-2 mL/min/1.73 m(2)/year. Regression analysis showed that increased age at initiation of agalsidase-beta therapy was significantly associated with worsened kidney outcome. Hypotension and hyperkalaemia occurred in seven and eight patients, respectively, which required modification of antiproteinuric therapy but was not associated with serious adverse events.. This study documents the effectiveness of agalsidase-beta (1 mg/kg/2 weeks) and antiproteinuric therapy with ACE inhibitors and/or ARB in patients with severe Fabry nephropathy. Patients had preservation of kidney function if agalsidase-beta treatment was initiated at a younger age, and UPCR maintained at or below 0.5 g/g with antiproteinuric therapy.. NCT00446862.

Topics: Adult; alpha-Galactosidase; Angiotensin Receptor Antagonists; Angiotensin-Converting Enzyme Inhibitors; Drug Therapy, Combination; Fabry Disease; Female; Glomerular Filtration Rate; Humans; Isoenzymes; Kidney; Kidney Diseases; Male; Middle Aged; Prospective Studies; Treatment Outcome

Clinical Fabry's disease is due to any of multiple mutations in the X-linked alpha-galactosidase gene. These mutations are kindred-specific, often spontaneous, and produce varying degrees of functional enzyme deficiency resulting in deposits of specific glycosphingolipid (cerumide), especially in the vasculature, kidneys, heart and reticuloendothelial tissue. Disease frequency has probably been over-estimated at 1/40,000; so few centres have developed clinical experience of the disease, though the disease has been identified in all major racial groups.

Topics: alpha-Galactosidase; Australia; Clinical Trials as Topic; Fabry Disease; Female; Heart Diseases; Humans; Isoenzymes; Kidney Diseases; Male