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Daprodustat for anemia: a 24-week, open-label, randomized controlled trial in participants on hemodialysis.

ABSTRACT: Background:This study evaluated the hemoglobin dose response, other efficacy measures and safety of daprodustat, an orally administered, hypoxia-inducible factor prolyl hydroxylase inhibitor in development for anemia of chronic kidney disease. Methods:Participants (n?=?216) with baseline hemoglobin levels of 9-11.5?g/dL on hemodialysis (HD) previously receiving stable doses of recombinant human erythropoietin (rhEPO) were randomized in a 24-week dose-range, efficacy and safety study. Participants discontinued rhEPO and then were randomized to receive daily daprodustat (4, 6, 8, 10 or 12?mg) or control (placebo for 4 weeks then open-label rhEPO as required). After 4 weeks, doses were titrated to achieve a hemoglobin target of 10-11.5?g/dL. The primary outcome was characterization of the dose-response relationship between daprodustat and hemoglobin at 4 weeks; additionally, the efficacy and safety of daprodustat were assessed over 24 weeks. Results:Over the first 4 weeks, the mean hemoglobin change from baseline increased dose-dependently from -0.29? (daprodustat 4?mg) to 0.69?g/dL (daprodustat 10 and 12?mg). The mean change from baseline hemoglobin (10.4?g/dL) at 24 weeks was 0.03?and -0.11?g/dL for the combined daprodustat and control groups, respectively. The median maximum observed plasma EPO levels in the control group were ?14-fold higher than in the combined daprodustat group. Daprodustat demonstrated an adverse event profile consistent with the HD population. Conclusions:Daprodustat produced dose-dependent changes in hemoglobin over the first 4 weeks after switching from a stable dose of rhEPO as well as maintained hemoglobin target levels over 24 weeks.

SUBMITTER: Meadowcroft AM

PROVIDER: S-EPMC6366140 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature

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Daprodustat for anemia: a 24-week, open-label, randomized controlled trial in participants on hemodialysis.

Meadowcroft Amy M AM Cizman Borut B Holdstock Louis L Biswas Nandita N Johnson Brendan M BM Jones Delyth D Nossuli A Kaldun AK Lepore John J JJ Aarup Michael M Cobitz Alexander R AR

Clinical kidney journal 20180319 1

<h4>Background</h4>This study evaluated the hemoglobin dose response, other efficacy measures and safety of daprodustat, an orally administered, hypoxia-inducible factor prolyl hydroxylase inhibitor in development for anemia of chronic kidney disease.<h4>Methods</h4>Participants (<i>n</i> = 216) with baseline hemoglobin levels of 9-11.5 g/dL on hemodialysis (HD) previously receiving stable doses of recombinant human erythropoietin (rhEPO) were randomized in a 24-week dose-range, efficacy and saf ...[more]

PMID: 30746141

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Project description:BackgroundDaprodustat is an oral agent that stimulates erythropoiesis by inhibiting the prolyl hydroxylases which mark hypoxia-inducible factor for degradation through hydroxylation. Its safety and efficacy (noninferiority) were assessed in this 52-week, open-label study.MethodsJapanese patients not on dialysis (ND) (N = 299) with anemia of CKD (stages G3, G4, and G5) with iron parameters of ferritin >100 ng/mL or transferrin saturation >20% at screening were randomized to daprodustat or epoetin beta pegol (continuous erythropoietin receptor activator [CERA], also known as methoxy polyethylene glycol-epoetin beta). After initiation of the study, the daprodustat starting dose for erythropoiesis-stimulating agent (ESA)-naïve participants was revised, and daprodustat was started at 2 or 4 mg once daily depending on baseline hemoglobin. ESA users switched to daprodustat 4 mg once daily. CERA was started at 25 μg every 2 weeks for ESA-naïve patients and 25-250 μg every 4 weeks for ESA users based on previous ESA dose. In both treatment groups, dose was adjusted every 4 weeks based on hemoglobin level and changed according to a prespecified algorithm. The primary endpoint was mean hemoglobin level during weeks 40-52 in the intention-to-treat (ITT) population. ESA-naïve patients who entered before the protocol amendment revising the daprodustat starting dose were excluded from the ITT population.ResultsMean hemoglobin levels during weeks 40-52 were 12.0 g/dL in the daprodustat group (n = 108; 95% confidence interval [CI], 11.8-12.1) and 11.9 g/dL for CERA (n = 109; 95% CI 11.7-12.0); the difference between the groups was 0.1 g/dL (95% CI -0.1 to 0.3 g/dL). The lower limit of the 95% CI of the difference was greater than the prespecified margin of -1.0 g/dL. The mean hemoglobin level was within the target range (11.0-13.0 g/dL) during weeks 40-52 for 92% of participants in both groups. There was no meaningful difference in the frequencies of adverse events.ConclusionsOral daprodustat was noninferior to CERA in achieving and maintaining target hemoglobin levels in Japanese ND patients. Daprodustat was well tolerated, with no new safety concerns identified.

Project description:Background:We have reported previously the insufficient absolute number or functional defects of regulatory T cells (Tregs) in patients with rheumatoid arthritis (RA), challenging conventional unspecific immunosuppressive therapy. Sirolimus, a mTOR inhibitor, is reported to allow growth of functional Tregs; here, we investigated the efficacy of low-dose sirolimus combined with conventional immunosuppressants (sirolimus immunoregulation therapy) for RA treatment with lower side effects and better tolerance. Methods:In this nonblinded and parallel-group trial, we randomly assigned 62 patients to receive conventional glucocorticoids and immunosuppressants with or without sirolimus at a dosage of 0.5 mg on alternate days for 24 weeks in a 2 : 1 ratio. The demographic features, clinical manifestations, and laboratory indicators including peripheral blood lymphocyte subgroups and CD4+T subsets were compared before and after the treatment. Results:Finally, 37 patients in the sirolimus group and 18 in the conventional treated group completed the 6-month study. By 24 weeks, the patients with sirolimus experienced significant reduction in disease activity indicators including DAS28, ESR, and the number of tender joints and swollen joints (p < 0.001). Notably, they had a higher level of Tregs as compared with those with conventional therapy alone (p < 0.05), indicating that sirolimus could partly restore the reduced Tregs. Concomitantly, their usage of immunosuppressants for controlling disease activity was decreased as compared with the conventional group with no difference in blood routine, and liver and renal functions both before and after the treatment of sirolimus and between the two groups (p > 0.05). Conclusions:Low-dose sirolimus immunoregulatory therapy selectively upregulated Tregs and partly replaced the usage of immunosuppressants to control disease activity without overtreatment and evaluable side effect. Further study is required using a large sample of RA patients treated with sirolimus for a longer period. This trial is registered at the Chinese Clinical Trial Registry (http://www.chictr.org.cn/showproj.aspx?proj=17245).

Project description:ObjectiveNonalcoholic fatty liver disease (NAFLD) is a liver phenotype of type 2 diabetes and obesity. Currently, the efficacy of sodium-glucose cotransporter 2 (SGLT2) inhibitors and sulfonylureas in liver pathology and hepatic gene expression profiles for type 2 diabetes with NAFLD are unknown.Research design and methodsWe conducted a 48 week, randomized, open-label, parallel-group trial involving participants with biopsy-confirmed NAFLD. A total of 40 participants were randomly assigned to receive once daily 20 mg tofogliflozin or 0.5 mg glimepiride. The primary outcome was the percentage of participants with at least an improvement in all individual scores for histological categories of steatosis, hepatocellular ballooning, lobular inflammation, and fibrosis by at least 1 point. The secondary end points were the changes in liver enzymes, metabolic markers, and hepatic gene expression profiles.ResultsFibrosis scores improved in the tofogliflozin group (60%, P = 0.001), whereas the change from baseline did not differ significantly between the groups (P = 0.172). The histological variables of steatosis (65%, P = 0.001), hepatocellular ballooning (55%, P = 0.002), and lobular inflammation (50%, P = 0.003) were improved in the tofogliflozin group, whereas only hepatocellular ballooning was improved in the glimepiride group (25%, P = 0.025). Hepatic gene expression profiling revealed histology-associated signatures in energy metabolism, inflammation, and fibrosis that were reversed with tofogliflozin.ConclusionsTofogliflozin and, to a lesser degree, glimepiride led to liver histological and metabolic improvement in participants with type 2 diabetes and NAFLD, with no significant difference between the agents. The hepatic expression of the genes involved in energy metabolism, inflammation, and fibrosis was well correlated with liver histological changes and rescued by tofogliflozin. We need further confirmation through long-term larger-scale clinical trials of SGLT2 inhibitors.

Project description:OBJECTIVES:The long-term safety, tolerability, and efficacy of paliperidone extended-release (ER) were evaluated in Chinese patients with schizophrenia. METHODS:Patients (aged ?18 years) with schizophrenia (Diagnostic and Statistical Manual of Mental Disorders, 4th edition criteria) who had completed run-in (8-week), stabilization (6-week), and double-blind (DB) phases (variable) of a phase-3, placebo-controlled study entered this 24-week, open-label extension (OLE) study. These patients, who had either experienced a relapse or remained relapse-free through DB phase of the study, were treated with flexible-dose paliperidone-ER (3-12 mg/day) during the OLE phase. Major safety evaluations included treatment-emergent adverse events (TEAEs) and extrapyramidal symptoms. Efficacy endpoints included changes in Positive and Negative Syndrome Scale total score, Clinical Global Impression-Severity scale, and Personal and Social Performance scale from OLE baseline to OLE endpoint. RESULTS:Out of 106 patients who entered the OLE phase (placebo: 59, paliperidone-ER: 47), a total of 85 (80%) completed it. Thirty-five (33%) patients experienced at least one TEAE; most common were akathisia, somnolence, nasopharyngitis, and constipation (3.8% each). Serious TEAEs were noted in two patients (completed suicide; schizophrenia worsening). No TEAEs with an onset during the OLE phase led to discontinuation. Extrapyramidal symptoms related-TEAEs were reported in eight (7.5%) patients. Mean (standard deviation) changes in Positive and Negative Syndrome Scale total scores (-10.4 [13.2]), Clinical Global Impression-Severity scores (-0.6 [0.96]) and Personal and Social Performance scores (7.4 [13.2]) from OLE baseline to OLE endpoint showed patients who had been treated with placebo during the DB phase experienced more pronounced improvements. CONCLUSION:In this OLE study, flexibly dosed paliperidone-ER (3-12 mg/day) was tolerable and efficacious in Chinese patients with schizophrenia.

Dataset Information

Daprodustat for anemia: a 24-week, open-label, randomized controlled trial in participants on hemodialysis.

Publications

Daprodustat for anemia: a 24-week, open-label, randomized controlled trial in participants on hemodialysis.

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