Trial Outcomes & Findings for Ascertain the Optimal Starting Dose of Mircera Given Subcutaneously for Maintenance Treatment of Anemia in Pediatric Patients With Chronic Kidney Disease on Dialysis or Not Yet on Dialysis. (NCT NCT03552393)

NCT ID: NCT03552393

Last Updated: 2022-03-07

Results Overview

The Hb change from baseline was calculated on a per-participant basis using an individual's average for both the baseline and evaluation periods and taking the difference. The baseline period was defined as the time between the day of first study dose and the previous 35 days. The evaluation period was defined as the period between Week 17 and Week 21, inclusive.

Recruitment status

COMPLETED

Study phase

PHASE2

Target enrollment

40 participants

Primary outcome timeframe

Baseline up to Week 21

Results posted on

2022-03-07

Participant Flow

The core study was 23 weeks and consisted of three periods: screening (3 weeks), dose titration (16 weeks) and evaluation (4 weeks). Participants completing the 20 weeks of treatment with hemoglobin (Hb) within +/- 1g/dL of their baseline and within the target range of 10-12 g/dL were eligible to enter an optional 24-week safety extension period.

A total of 40 pediatric participants (ages 3 months to 17 years) with a diagnosis of anemia due to chronic kidney disease (CKD) who may or may not have been on dialysis at the time of study start were switched from stable subcutaneous (SC) maintenance treatment with epoetin alfa/beta or darbepoetin to methoxy polyethylene glycol-epoetin beta (Mircera).

Participant milestones

Participant milestones
Measure
Mircera
Mircera was administered subcutaneously once every 4 weeks.
Core Period
STARTED
40
Core Period
COMPLETED
38
Core Period
NOT COMPLETED
2
Safety Extension Period
STARTED
25
Safety Extension Period
COMPLETED
21
Safety Extension Period
NOT COMPLETED
4

Reasons for withdrawal

Reasons for withdrawal
Measure
Mircera
Mircera was administered subcutaneously once every 4 weeks.
Core Period
Kidney Transplant
1
Core Period
Prohibited Medication
1
Safety Extension Period
Kidney Transplant
4

Baseline Characteristics

Ascertain the Optimal Starting Dose of Mircera Given Subcutaneously for Maintenance Treatment of Anemia in Pediatric Patients With Chronic Kidney Disease on Dialysis or Not Yet on Dialysis.

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Mircera
n=40 Participants
Mircera was administered subcutaneously once every 4 weeks.
Age, Continuous
10.32 years
STANDARD_DEVIATION 5.69 • n=5 Participants
Sex: Female, Male
Female
17 Participants
n=5 Participants
Sex: Female, Male
Male
23 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
4 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
27 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
9 Participants
n=5 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
Race (NIH/OMB)
Asian
0 Participants
n=5 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
Race (NIH/OMB)
Black or African American
3 Participants
n=5 Participants
Race (NIH/OMB)
White
30 Participants
n=5 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
Race (NIH/OMB)
Unknown or Not Reported
7 Participants
n=5 Participants

PRIMARY outcome

Timeframe: Baseline up to Week 21

Population: ITT population included all participants enrolled in the study. Number analyzed is the number of participants with Hb concentration assessment at specified time points.

The Hb change from baseline was calculated on a per-participant basis using an individual's average for both the baseline and evaluation periods and taking the difference. The baseline period was defined as the time between the day of first study dose and the previous 35 days. The evaluation period was defined as the period between Week 17 and Week 21, inclusive.

Outcome measures

Outcome measures
Measure
Mircera
n=38 Participants
Mircera was administered subcutaneously once every 4 weeks.
Change in Hemoglobin (Hb) Concentration Between the Baseline and the Evaluation Period for Each Patient
Baseline
11.05 grams/deciliter (g/dL)
Standard Deviation 0.51
Change in Hemoglobin (Hb) Concentration Between the Baseline and the Evaluation Period for Each Patient
Change at Evaluation Period
0.48 grams/deciliter (g/dL)
Standard Deviation 1.03

SECONDARY outcome

Timeframe: Week 17 up to Week 21

Population: ITT population included all participants enrolled in the study. Hb values within 21 days after blood transfusion(s) were excluded from analysis. Number analyzed is the number of participants with Hb concentration assessment at specified time points.

Number of participants with an average Hb concentration during the evaluation period within ± 1 g/dL of their baseline Hb is reported as well as the number of participants with an average Hb concentration above, within or below the range of 10-12 g/dL. The evaluation period was defined as the period between Week 17 and Week 21 inclusive.

Outcome measures

Outcome measures
Measure
Mircera
n=38 Participants
Mircera was administered subcutaneously once every 4 weeks.
Number of Participants With an Average Hb Concentration During the Evaluation Period Within ± 1 g/dL of Their Baseline Hb and Above, Within or Below the Range of 10-12 g/dL
Hb Above 1 g/dL of Baseline
15 participants
Number of Participants With an Average Hb Concentration During the Evaluation Period Within ± 1 g/dL of Their Baseline Hb and Above, Within or Below the Range of 10-12 g/dL
Hb Maintained Within ± 1 g/dL of Baseline
19 participants
Number of Participants With an Average Hb Concentration During the Evaluation Period Within ± 1 g/dL of Their Baseline Hb and Above, Within or Below the Range of 10-12 g/dL
Hb Below 1 g/dL of Baseline
4 participants
Number of Participants With an Average Hb Concentration During the Evaluation Period Within ± 1 g/dL of Their Baseline Hb and Above, Within or Below the Range of 10-12 g/dL
Hb Above 12 g/dL
12 participants
Number of Participants With an Average Hb Concentration During the Evaluation Period Within ± 1 g/dL of Their Baseline Hb and Above, Within or Below the Range of 10-12 g/dL
Hb Maintained Within 10-12 g/dL
24 participants
Number of Participants With an Average Hb Concentration During the Evaluation Period Within ± 1 g/dL of Their Baseline Hb and Above, Within or Below the Range of 10-12 g/dL
Hb Below 10 g/dL
2 participants

SECONDARY outcome

Timeframe: Baseline, Weeks 3, 5, 9, 13, 17, 19, 21, 25, 29, 33, 37, 41, 45

Population: ITT population included all participants enrolled in the study. Number analyzed signifies number of participants evaluable at specified time points.

The mean Hb concentration over time and the mean change in Hb from baseline over time are presented.

Outcome measures

Outcome measures
Measure
Mircera
n=40 Participants
Mircera was administered subcutaneously once every 4 weeks.
Mean Hb Values and Change From Baseline
Baseline
11.02 g/dL
Standard Deviation 0.53
Mean Hb Values and Change From Baseline
Week 3
11.69 g/dL
Standard Deviation 0.97
Mean Hb Values and Change From Baseline
Change at Week 3
0.67 g/dL
Standard Deviation 0.74
Mean Hb Values and Change From Baseline
Week 5
11.21 g/dL
Standard Deviation 1.02
Mean Hb Values and Change From Baseline
Change at Week 5
0.19 g/dL
Standard Deviation 0.94
Mean Hb Values and Change From Baseline
Week 9
11.68 g/dL
Standard Deviation 1.42
Mean Hb Values and Change From Baseline
Change at Week 9
0.64 g/dL
Standard Deviation 1.21
Mean Hb Values and Change From Baseline
Week 13
11.56 g/dL
Standard Deviation 1.17
Mean Hb Values and Change From Baseline
Change at Week 13
0.51 g/dL
Standard Deviation 1.10
Mean Hb Values and Change From Baseline
Week 17
11.46 g/dL
Standard Deviation 1.33
Mean Hb Values and Change From Baseline
Change at Week 17
0.42 g/dL
Standard Deviation 1.39
Mean Hb Values and Change From Baseline
Week 19
11.81 g/dL
Standard Deviation 1.11
Mean Hb Values and Change From Baseline
Change at Week 19
0.77 g/dL
Standard Deviation 1.14
Mean Hb Values and Change From Baseline
Week 21
11.10 g/dL
Standard Deviation 0.91
Mean Hb Values and Change From Baseline
Change at Week 21
0.05 g/dL
Standard Deviation 0.99
Mean Hb Values and Change From Baseline
Week 25
11.29 g/dL
Standard Deviation 1.04
Mean Hb Values and Change From Baseline
Change at Week 25
0.21 g/dL
Standard Deviation 1.12
Mean Hb Values and Change From Baseline
Week 29
11.22 g/dL
Standard Deviation 1.18
Mean Hb Values and Change From Baseline
Change at Week 29
0.15 g/dL
Standard Deviation 1.11
Mean Hb Values and Change From Baseline
Week 33
11.09 g/dL
Standard Deviation 1.11
Mean Hb Values and Change From Baseline
Change at Week 33
0.02 g/dL
Standard Deviation 1.24
Mean Hb Values and Change From Baseline
Week 37
11.04 g/dL
Standard Deviation 0.77
Mean Hb Values and Change From Baseline
Change at Week 37
-0.03 g/dL
Standard Deviation 0.90
Mean Hb Values and Change From Baseline
Week 41
10.83 g/dL
Standard Deviation 0.83
Mean Hb Values and Change From Baseline
Change at Week 41
-0.22 g/dL
Standard Deviation 1.03
Mean Hb Values and Change From Baseline
Week 45
10.68 g/dL
Standard Deviation 1.02
Mean Hb Values and Change From Baseline
Change at Week 45
-0.35 g/dL
Standard Deviation 1.13

SECONDARY outcome

Timeframe: Week 1 to Week 17

Population: Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not. Number analyzed signifies number of participants evaluable at specified time points.

A dose change was defined as a change in the administered dose strength compared to the preceding dose.

Outcome measures

Outcome measures
Measure
Mircera
n=40 Participants
Mircera was administered subcutaneously once every 4 weeks.
Change in Mircera Dose Over Time
Week 13
50.00 micrograms (µg)
Interval 0.0 to 360.0
Change in Mircera Dose Over Time
Week 1
75.00 micrograms (µg)
Interval 15.0 to 360.0
Change in Mircera Dose Over Time
Week 5
75.00 micrograms (µg)
Interval 15.0 to 360.0
Change in Mircera Dose Over Time
Change at Week 5
0.00 micrograms (µg)
Interval -50.0 to 75.0
Change in Mircera Dose Over Time
Week 9
50.00 micrograms (µg)
Interval 0.0 to 360.0
Change in Mircera Dose Over Time
Change at Week 9
0.00 micrograms (µg)
Interval -250.0 to 190.0
Change in Mircera Dose Over Time
Change at Week 13
-25.00 micrograms (µg)
Interval -120.0 to 210.0
Change in Mircera Dose Over Time
Week 17
50.00 micrograms (µg)
Interval 0.0 to 250.0
Change in Mircera Dose Over Time
Change at Week 17
-20.00 micrograms (µg)
Interval -250.0 to 120.0

SECONDARY outcome

Timeframe: Week 1, Week 17

Population: Participants who received a dose of study drug on Week 1 and Week 17 were included in the analysis.

The ratio of Mircera dose was calculated as the median (min-max) ratio of starting dose (Week 1) to the dose at Week 17. Participants who withdrew before Week 17 or who were not administered a Mircera dose at Week 17 visit due to the applicable dose adjustment rules were excluded from the ratio computation.

Outcome measures

Outcome measures
Measure
Mircera
n=33 Participants
Mircera was administered subcutaneously once every 4 weeks.
Ratio of Mircera Starting Dose (Week 1) to the Dose at Week 17
1.44 ratio
Interval 0.2 to 3.8

SECONDARY outcome

Timeframe: Baseline up to Week 45

Population: Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.

An adverse event is any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product, any new disease, or exacerbation of existing disease (a worsening in the character, frequency, or severity of a known condition), recurrence of an intermittent medical condition or any deterioration in a laboratory value or other clinical test.

Outcome measures

Outcome measures
Measure
Mircera
n=40 Participants
Mircera was administered subcutaneously once every 4 weeks.
Number of Participants With Adverse Events by Severity as Assessed by Highest World Health Organization (WHO) Toxicity Grade
Grade 1-2
25 participants
Number of Participants With Adverse Events by Severity as Assessed by Highest World Health Organization (WHO) Toxicity Grade
Grade 3-4
8 participants

SECONDARY outcome

Timeframe: Pre-dose at Week 1, 9, 17; Post-dose at Week 3, Week 19 and additional sample taken between 24 hours and 5 days at participant's convenience

Population: PK population included all participants enrolled in the study.

Bioavailability (F) is defined as the percentage of the administered drug, that reaches the systemic circulation. A population PK model was developed for Mircera that adequately describes pediatric data: a 1-compartment model with first order absorption and elimination processes. The bioavailability (F) was estimated using all the data points listed under time frame using the population PK model.

Outcome measures

Outcome measures
Measure
Mircera
n=40 Participants
Mircera was administered subcutaneously once every 4 weeks.
Bioavailability (F) of Mircera in Pediatric Participants Based on Population PK Model
67 percentage

Adverse Events

Mircera

Serious events: 13 serious events
Other events: 28 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
Mircera
n=40 participants at risk
Mircera was administered subcutaneously once every 4 weeks.
Congenital, familial and genetic disorders
Hydrocele
2.5%
1/40 • Number of events 1 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Gastrointestinal disorders
Diarrhoea
2.5%
1/40 • Number of events 1 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Gastrointestinal disorders
Vomiting
2.5%
1/40 • Number of events 2 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
General disorders
Device related thrombosis
2.5%
1/40 • Number of events 1 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Appendicitis
2.5%
1/40 • Number of events 1 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Device related infection
2.5%
1/40 • Number of events 2 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Enterovirus infection
2.5%
1/40 • Number of events 1 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Gastroenteritis
2.5%
1/40 • Number of events 1 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Peritonitis
7.5%
3/40 • Number of events 3 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Pharyngotonsillitis
2.5%
1/40 • Number of events 1 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Pneumonia
2.5%
1/40 • Number of events 1 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Pyelonephritis
2.5%
1/40 • Number of events 1 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Respiratory syncytial virus bronchiolitis
2.5%
1/40 • Number of events 1 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Rhinovirus infection
2.5%
1/40 • Number of events 1 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Upper respiratory tract infection
2.5%
1/40 • Number of events 1 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Viral infection
2.5%
1/40 • Number of events 1 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Injury, poisoning and procedural complications
Anaemia postoperative
5.0%
2/40 • Number of events 2 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Musculoskeletal and connective tissue disorders
Back pain
2.5%
1/40 • Number of events 1 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Product Issues
Device malfunction
2.5%
1/40 • Number of events 1 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Respiratory, thoracic and mediastinal disorders
Hypoxia
2.5%
1/40 • Number of events 1 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Vascular disorders
Hypotension
5.0%
2/40 • Number of events 2 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.

Other adverse events

Other adverse events
Measure
Mircera
n=40 participants at risk
Mircera was administered subcutaneously once every 4 weeks.
Blood and lymphatic system disorders
Anaemia
5.0%
2/40 • Number of events 2 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Gastrointestinal disorders
Abdominal pain
7.5%
3/40 • Number of events 3 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Gastrointestinal disorders
Diarrhoea
7.5%
3/40 • Number of events 4 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
General disorders
Injection site pain
5.0%
2/40 • Number of events 2 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
General disorders
Pyrexia
12.5%
5/40 • Number of events 5 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Bronchitis
5.0%
2/40 • Number of events 2 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Conjunctivitis
7.5%
3/40 • Number of events 3 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Gastroenteritis
5.0%
2/40 • Number of events 2 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Nasopharyngitis
5.0%
2/40 • Number of events 2 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Pharyngitis
5.0%
2/40 • Number of events 3 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Rhinitis
7.5%
3/40 • Number of events 3 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Upper respiratory tract infection
15.0%
6/40 • Number of events 6 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Infections and infestations
Urinary tract infection
5.0%
2/40 • Number of events 2 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Injury, poisoning and procedural complications
Accidental overdose
12.5%
5/40 • Number of events 5 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Metabolism and nutrition disorders
Hyperkalaemia
5.0%
2/40 • Number of events 2 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Metabolism and nutrition disorders
Hyperphosphataemia
5.0%
2/40 • Number of events 2 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Musculoskeletal and connective tissue disorders
Muscle spasms
5.0%
2/40 • Number of events 2 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Nervous system disorders
Headache
7.5%
3/40 • Number of events 6 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Renal and urinary disorders
Haematuria
5.0%
2/40 • Number of events 2 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Respiratory, thoracic and mediastinal disorders
Oropharyngeal pain
7.5%
3/40 • Number of events 3 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Respiratory, thoracic and mediastinal disorders
Rhinorrhoea
5.0%
2/40 • Number of events 3 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Vascular disorders
Hypertension
5.0%
2/40 • Number of events 3 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.
Vascular disorders
Hypotension
5.0%
2/40 • Number of events 3 • Up to Week 45
Safety population included all participants who received at least one dose of study drug regardless of whether they withdrew prematurely or not.

Additional Information

Medical Communications

Hoffmann-La Roche

Phone: 800 821-8590

Results disclosure agreements

  • Principal investigator is a sponsor employee The Study being conducted under this Agreement is part of the Overall Study. Investigator is free to publish in reputable journals or to present at professional conferences the results of the Study, but only after the first publication or presentation that involves the Overall Study. The Sponsor may request that Confidential Information be deleted and/or the publication be postponed in order to protect the Sponsor's intellectual property rights.
  • Publication restrictions are in place

Restriction type: OTHER