| Outcome Measures: |
Primary: Change From Baseline in Hemoglobin (Hgb) at Week 4, Baseline Hgb value was the average of three Hgb values taken during screening period at Week (W) -4, W-2 and Day 1. Change from Baseline in Hgb was calculated as W4 value minus the Baseline value. To model the dose-response relationship a four-parameter Emax model was used. The dose response dataset was based on all non-missing data collected up to W4. Participants (par.) who had a Week 2 Hgb measurement, but a missing Week 4 Hgb measurement were included with a change from Baseline at Week 4 value imputed as twice the change from Baseline at Week 2. E0 is the expected Hgb change from Baseline for a par. receiving placebo and experiencing the average Hgb Baseline observed in the study. Emax is the expected Hgb change from Baseline for a par. receiving the highest dose above which no further increase in response can be achieved. ED50 is the dose that attains the intermediate response. Gamma is the slope parameter. Alpha is the coefficient of the model covariate for centred Baseline., Baseline (Week -4, Week-2 and Day 1) and Week 4 | Secondary: Hgb Concentration at Week 24, Hgb values measured at Week 24 are presented., Week 24|Percentage of Time Within, Below, and Above Hgb Target Range Between Weeks 20 and 24, The percentage of time in Hgb target range between Weeks 20 and 24 for a participant was calculated by dividing the total number of days that Hgb was within the target range (10.0 to 11.5 g/dL) while on treatment during Weeks 20 to 24 (using linear interpolation) by the total number of days the participant remained on treatment during the defined period. Similarly, percentage of time above Hgb target range and percentage of time below Hgb target range were calculated., Week 20 to Week 24|Number of Participants With Hgb in the Target Range at Week 24, The number of participants with Hgb in the target range of 10.0 to 11.5 g/dL at Week 24 was recorded for each arm., Week 24|Number of Participants Reaching Pre-defined Hgb Stopping Criteria, The number of participants who reached the Hgb stopping criteria of Hgb concentration \<7.5 g/dL were presented., Up to 24 weeks|Maximum Observed Change From Baseline in Erythropoietin (EPO), Blood samples for control arm were collected on Day 1 (pre-dose), Week 4 (5-15 minutes post-dose), Week 8 (pre-dose), Week 12 (pre-dose), Week 16 (pre-dose), Week 20 (pre-dose, 5-15 minutes post-dose), Week 24 (pre-dose), and Week 28 (pre-dose) for EPO measurement. Blood samples for GSK1278863 arms were collected on Day 1 (pre-dose), Week 4 (6-12 hours post-dose), Week 4 (7-13, 8-14, 9-15, hours post-dose), Week 8 (pre-dose), Week 12 (pre-dose), Week 16 (pre-dose), Week 20 (pre-dose, 3 hour post-dose) Week 24 (pre-dose), and Week 28 (pre-dose) for EPO measurement. The maximum observed change from baseline in EPO was recorded for each arm. Baseline value for EPO is the pre-dose value on Day 1. Change from Baseline in EPO was calculated as the individual post-dose values minus the Baseline value., Baseline (Day 1) to Week 28|Maximum Observed Percent Change From Baseline in Vascular Endothelial Growth Factor (VEGF), Blood samples for control arm were collected on Day 1 (pre-dose), Week 4 (5-15 minutes post-dose), Week 8 (pre-dose), Week 12 (pre-dose), Week 16 (pre-dose), Week 20 (pre-dose, 5-15 minutes post-dose), Week 24 (pre-dose), and Week 28 (pre-dose) for VEGF measurement. Blood samples for GSK1278863 arms were collected on Day 1 (pre-dose), Week 4 (6-12 hours post-dose), Week 4 (7-13, 8-14, 9-15, hours post-dose), Week 8 (pre-dose), Week 12 (pre-dose), Week 16 (pre-dose), Week 20 (pre-dose, 3 hour post-dose) Week 24 (pre-dose), and Week 28 (pre-dose) for VEGF measurement. The maximum observed percent change from Baseline in VEGF was recorded for each arm. Baseline value for VEGF is the pre-dose value on Day 1. Percent change from Baseline was calculated as 100 multiplied by exponential of mean change in log scale minus 1., Baseline (Day 1) to Week 28|Population Plasma PK Parameters of GSK1278863 and Metabolites, Blood samples were collected for individual plasma GSK1278863and metabolite (GSK2391220, GSK2499166, GSK2531403, GSK2531400, GSK2531399, and GSK2531398) concentrations measurement on Day (D) 1 (pre-dose \[PrD), at Week (W) 4 (6-12, 7-13, 8-14, and 9-15 hour \[hr\] post-dose \[PoD), and at W20 (PrD, 1, 2, and 3 hour PoD). Pharmacokinetic population: All participants from whom a PK sample has been obtained and analyzed., Day 1, Week 4, and Week 20|Percent Change From Baseline in Hepcidin at Week 24, Hepcidin is a regulator of iron metabolism. Baseline value for transferrin saturation is the pre-dose value on Day 1. Percent change from Baseline was calculated as 100 multiplied by exponential of mean change in log scale minus 1., Baseline (Day 1) and Week 24|Change From Baseline in Ferritin at Week 24, Baseline value for ferritin is the pre-dose value on Day 1. Change from Baseline in ferritin was calculated as the Week 24 value minus the Baseline value., Baseline (Day 1) and Week 24|Change From Baseline in Transferrin at Week 24, Baseline value for transferrin is the pre-dose value on Day 1. Change from Baseline in transferrin was calculated as the Week 24 value minus the Baseline value., Baseline (Day 1) and Week 24|Percent Change From Baseline in Transferrin Saturation at Week 24, Transferrin saturation is measured as a percentage, it is the ratio of serum iron and total iron-binding capacity, multiplied by 100. Baseline value for transferrin saturation is the pre-dose value on Day 1. Percent change from Baseline =: 100\*(exp(Mean change log scale)-1)., Baseline (Day 1) and Week 24|Change From Baseline in Total Iron at Week 24, Baseline value for total iron is the pre-dose value on Day 1. Change from Baseline in total iron was calculated as the Week 24 value minus the Baseline value., Baseline (Day 1) and Week 24|Change From Baseline in Total Iron Binding Capacity at Week 24, Total iron-binding capacity is a medical laboratory test that measures the blood's capacity to bind iron with transferrin. Baseline value for total iron binding capacity is the pre-dose value on Day 1. Change from Baseline in total iron binding capacity was calculated as the Week 24 value minus the Baseline value., Baseline (Day 1) and Week 24|Change From Baseline in Reticulocyte Hemoglobin at Week 24, Baseline value for reticulocyte hemoglobin is the pre-dose value on Day 1. Change from Baseline in reticulocyte hemoglobin was calculated as the Week 24 value minus the Baseline value., Baseline (Day 1) and Week 24|Change From Baseline in Hematocrit at Week 24, Hematocrit is the ratio of the volume of red blood cells to the total volume of blood. Baseline value for hematocrit is the pre-dose value on Day 1. Change from Baseline in hematocrit was calculated as the Week 24 value minus the Baseline value., Baseline (Day 1) and Week 24|Change From Baseline in Red Blood Cells at Week 24, Baseline value for red blood cells is the pre-dose value on Day 1. Change from Baseline in red blood cells was calculated as the Week 24 value minus the Baseline value., Baseline (Day 1) and Week 24|Change From Baseline in Reticulocyte Count at Week 24, A reticulocyte count is a blood test that measures the percentage of reticulocytes in the blood. Reticulocytes are slightly immature red blood cells. Baseline value for reticulocyte count is the pre-dose value on Day 1. Change from Baseline in reticulocyte count was calculated as the Week 24 value minus the Baseline value., Baseline (Day 1) and Week 24
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| Locations: |
GSK Investigational Site, Azusa, California, 91702, United States|GSK Investigational Site, Los Angeles, California, 90022, United States|GSK Investigational Site, Los Angeles, California, 90025, United States|GSK Investigational Site, San Dimas, California, 91773, United States|GSK Investigational Site, West Hills, California, 91307, United States|GSK Investigational Site, Lauderdale Lakes, Florida, 33313, United States|GSK Investigational Site, Pembroke Pines, Florida, 33028, United States|GSK Investigational Site, Macon, Georgia, 31217, United States|GSK Investigational Site, Evergreen Park, Illinois, 60805, United States|GSK Investigational Site, Bethesda, Maryland, 20814, United States|GSK Investigational Site, Farmington, Missouri, 63640, United States|GSK Investigational Site, Amherst, New York, 14226, United States|GSK Investigational Site, Bronx, New York, 10461, United States|GSK Investigational Site, Charlotte, North Carolina, United States|GSK Investigational Site, 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Site, Dundee, DD1 9SY, United Kingdom|GSK Investigational Site, Hull, HU3 2JZ, United Kingdom|GSK Investigational Site, London, E1 1BB, United Kingdom|GSK Investigational Site, Manchester, M13 9WL, United Kingdom|GSK Investigational Site, Oxford, OX3 7LE, United Kingdom
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