Trial Outcomes & Findings for A Study to Determine Whether Therapy With Daclizumab Will Benefit Patients With Bone Marrow Failure (NCT NCT00001962)

NCT ID: NCT00001962

Last Updated: 2021-07-09

Results Overview

Number of participants with hematologic response at 3 months following Daclizumab, 1 mg/kg, will be given for a total of 5 intravenous infusions to subjects diagnosed with moderate aplastic anemia (MAA), pure red cell aplasia (PRCA), Diamond Blackfan anemia (DBA), relapse and refractory severe aplastic anemia (SAA) will receive treatment. A complete hematologic response will be considered an achievement of normal blood counts. A partial response was defined as any response less than a complete response. The primary endpoint was a hematologic response in at least one affected peripheral blood count parameter, as determined by 3 separate measurements in the first 12 weeks after completion of the infusion.

Recruitment status

TERMINATED

Study phase

PHASE2

Target enrollment

100 participants

Primary outcome timeframe

3 months

Results posted on

2021-07-09

Participant Flow

Participant milestones

Participant milestones
Measure
Daclizumab in Bone Marrow Failure Syndromes
Daclizumab, 1 mg/kg, will be given for a total of 5 intravenous infusions in participants with a bone marrow failure syndrome. These subjects may be diagnosed with moderate aplastic anemia, pure red cell aplasia, Diamond Blackfan anemia, relapse and refractory severe aplastic anemia will receive treatment. The subjects will be seen and receive the daclizumab infusion biweekly during the treatment period.
Overall Study
STARTED
100
Overall Study
COMPLETED
72
Overall Study
NOT COMPLETED
28

Reasons for withdrawal

Reasons for withdrawal
Measure
Daclizumab in Bone Marrow Failure Syndromes
Daclizumab, 1 mg/kg, will be given for a total of 5 intravenous infusions in participants with a bone marrow failure syndrome. These subjects may be diagnosed with moderate aplastic anemia, pure red cell aplasia, Diamond Blackfan anemia, relapse and refractory severe aplastic anemia will receive treatment. The subjects will be seen and receive the daclizumab infusion biweekly during the treatment period.
Overall Study
Lack of Efficacy
18
Overall Study
Lack of Accrual
6
Overall Study
Death
1
Overall Study
Lost to Follow-up
2
Overall Study
Adverse Event
1

Baseline Characteristics

A Study to Determine Whether Therapy With Daclizumab Will Benefit Patients With Bone Marrow Failure

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Daclizumab in Bone Marrow Failure Syndromes
n=100 Participants
Daclizumab, 1 mg/kg, will be given for a total of 5 intravenous infusions in participants with a bone marrow failure syndrome. These subjects may be diagnosed with moderate aplastic anemia, pure red cell aplasia, Diamond Blackfan anemia, relapse and refractory severe aplastic anemia will receive treatment. The subjects will be seen and receive the daclizumab infusion biweekly during the treatment period.
Age, Categorical
<=18 years
27 Participants
n=99 Participants
Age, Categorical
Between 18 and 65 years
57 Participants
n=99 Participants
Age, Categorical
>=65 years
16 Participants
n=99 Participants
Sex: Female, Male
Female
49 Participants
n=99 Participants
Sex: Female, Male
Male
51 Participants
n=99 Participants

PRIMARY outcome

Timeframe: 3 months

Population: The daclizumab hematologic response was evaluated for subjects diagnosed with moderate aplastic anemia (MAA) and pure red cell aplasia (PRCA). The Diamond Blackfan arm was closed due to lack of accrual. Relapse and Refractory Severe Aplastic Anemia (SAA) was closed to lack of efficacy.

Number of participants with hematologic response at 3 months following Daclizumab, 1 mg/kg, will be given for a total of 5 intravenous infusions to subjects diagnosed with moderate aplastic anemia (MAA), pure red cell aplasia (PRCA), Diamond Blackfan anemia (DBA), relapse and refractory severe aplastic anemia (SAA) will receive treatment. A complete hematologic response will be considered an achievement of normal blood counts. A partial response was defined as any response less than a complete response. The primary endpoint was a hematologic response in at least one affected peripheral blood count parameter, as determined by 3 separate measurements in the first 12 weeks after completion of the infusion.

Outcome measures

Outcome measures
Measure
Daclizumab in Participants With a Bone Marrow Failure Syndrome
n=72 Participants
Daclizumab, 1 mg/kg, will be given for a total of 5 intravenous infusions in participants with a bone marrow failure syndrome. These subjects may be diagnosed with moderate aplastic anemia, pure red cell aplasia, Diamond Blackfan anemia, relapse and refractory severe aplastic anemia will receive treatment. The subjects will be seen and receive the daclizumab infusion biweekly during the treatment period.
Number of Participants With Hematologic Response Following Daclizumab in Patients With Moderate Aplastic Anemia (MAA) and Pure Red Cell Aplasia (PRCA).
MAA Complete response
6 participants
Number of Participants With Hematologic Response Following Daclizumab in Patients With Moderate Aplastic Anemia (MAA) and Pure Red Cell Aplasia (PRCA).
MAA Partial response
13 participants
Number of Participants With Hematologic Response Following Daclizumab in Patients With Moderate Aplastic Anemia (MAA) and Pure Red Cell Aplasia (PRCA).
MAA No response
26 participants
Number of Participants With Hematologic Response Following Daclizumab in Patients With Moderate Aplastic Anemia (MAA) and Pure Red Cell Aplasia (PRCA).
PRCA Complete response
6 participants
Number of Participants With Hematologic Response Following Daclizumab in Patients With Moderate Aplastic Anemia (MAA) and Pure Red Cell Aplasia (PRCA).
PRCA Partial response
4 participants
Number of Participants With Hematologic Response Following Daclizumab in Patients With Moderate Aplastic Anemia (MAA) and Pure Red Cell Aplasia (PRCA).
PRCA No response
17 participants

SECONDARY outcome

Timeframe: 5 years

Population: This was evaluated for subjects diagnosed with moderate aplastic anemia (MAA) and pure red cell aplasia (PRCA). The Diamond Blackfan anemia arm was closed due to the lack of accrual. The Relapse and Refractory Severe Aplastic Anemia (SAA) was closed due to lack of efficacy.

Number of participants that no longer required blood transfusion after receiving Daclizumab, 1 mg/kg, for a total of 5 intravenous infusions to subjects diagnosed with moderate aplastic anemia (MAA), pure red cell aplasia (PRCA), Diamond Blackfan anemia (DBA), relapse and refractory severe aplastic anemia (SAA) will receive treatment.

Outcome measures

Outcome measures
Measure
Daclizumab in Participants With a Bone Marrow Failure Syndrome
n=72 Participants
Daclizumab, 1 mg/kg, will be given for a total of 5 intravenous infusions in participants with a bone marrow failure syndrome. These subjects may be diagnosed with moderate aplastic anemia, pure red cell aplasia, Diamond Blackfan anemia, relapse and refractory severe aplastic anemia will receive treatment. The subjects will be seen and receive the daclizumab infusion biweekly during the treatment period.
Number of Participants That no Longer Required Blood Transfusion
MAA
7 participants
Number of Participants That no Longer Required Blood Transfusion
PRCA
28 participants

SECONDARY outcome

Timeframe: 5 years

Population: This was evaluated for subjects diagnosed with moderate aplastic anemia (MAA) and pure red cell aplasia (PRCA). The Diamond Blackfan anemia arm was closed due to the lack of accrual. The Relapse and Refractory Severe Aplastic Anemia (SAA) was closed due to lack of efficacy.

Overall Survival at end of study after receiving Daclizumab, 1 mg/kg, for a total of 5 intravenous infusions to subjects diagnosed with moderate aplastic anemia (MAA), pure red cell aplasia (PRCA), Diamond Blackfan anemia (DBA), relapse and refractory severe aplastic anemia (SAA) will receive treatment.

Outcome measures

Outcome measures
Measure
Daclizumab in Participants With a Bone Marrow Failure Syndrome
n=72 Participants
Daclizumab, 1 mg/kg, will be given for a total of 5 intravenous infusions in participants with a bone marrow failure syndrome. These subjects may be diagnosed with moderate aplastic anemia, pure red cell aplasia, Diamond Blackfan anemia, relapse and refractory severe aplastic anemia will receive treatment. The subjects will be seen and receive the daclizumab infusion biweekly during the treatment period.
Overall Survival
Deaths
7 Participants
Overall Survival
Alive
65 Participants

Adverse Events

Daclizumab in Participants With a Bone Marrow Failure Syndrome

Serious events: 9 serious events
Other events: 40 other events
Deaths: 7 deaths

Serious adverse events

Serious adverse events
Measure
Daclizumab in Participants With a Bone Marrow Failure Syndrome
n=100 participants at risk
Daclizumab, 1 mg/kg, will be given for a total of 5 intravenous infusions in participants with a bone marrow failure syndrome. These subjects may be diagnosed with moderate aplastic anemia, pure red cell aplasia, Diamond Blackfan anemia, relapse and refractory severe aplastic anemia will receive treatment. The subjects will be seen and receive the daclizumab infusion biweekly during the treatment period.
Immune system disorders
infection
2.0%
2/100 • Number of events 2 • 5 years
Renal and urinary disorders
renal failure
1.0%
1/100 • Number of events 1 • 5 years
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
hepatocellular carcinoma
1.0%
1/100 • Number of events 1 • 5 years
Hepatobiliary disorders
elevated liver function tests
1.0%
1/100 • Number of events 1 • 5 years
Blood and lymphatic system disorders
polycythemia
1.0%
1/100 • Number of events 1 • 5 years
Cardiac disorders
angina
1.0%
1/100 • Number of events 1 • 5 years
Infections and infestations
sinusitis
1.0%
1/100 • Number of events 1 • 5 years
Infections and infestations
gastroenteritis
1.0%
1/100 • Number of events 1 • 5 years
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
myeloma
1.0%
1/100 • Number of events 1 • 5 years

Other adverse events

Other adverse events
Measure
Daclizumab in Participants With a Bone Marrow Failure Syndrome
n=100 participants at risk
Daclizumab, 1 mg/kg, will be given for a total of 5 intravenous infusions in participants with a bone marrow failure syndrome. These subjects may be diagnosed with moderate aplastic anemia, pure red cell aplasia, Diamond Blackfan anemia, relapse and refractory severe aplastic anemia will receive treatment. The subjects will be seen and receive the daclizumab infusion biweekly during the treatment period.
Infections and infestations
shortness of breath
9.0%
9/100 • Number of events 9 • 5 years
General disorders
headache
11.0%
11/100 • Number of events 12 • 5 years
Gastrointestinal disorders
diarrhea
7.0%
7/100 • Number of events 7 • 5 years
Musculoskeletal and connective tissue disorders
pain
6.0%
6/100 • Number of events 6 • 5 years
Skin and subcutaneous tissue disorders
dry skin
1.0%
1/100 • Number of events 1 • 5 years
Cardiac disorders
edema
14.0%
14/100 • Number of events 14 • 5 years
General disorders
fatigue
5.0%
5/100 • Number of events 5 • 5 years
General disorders
fever
4.0%
4/100 • Number of events 4 • 5 years
Skin and subcutaneous tissue disorders
eczema
1.0%
1/100 • Number of events 1 • 5 years
Eye disorders
blurred vision
3.0%
3/100 • Number of events 3 • 5 years
Skin and subcutaneous tissue disorders
alopecia
1.0%
1/100 • Number of events 1 • 5 years
Skin and subcutaneous tissue disorders
rash
14.0%
14/100 • Number of events 15 • 5 years
General disorders
pallor
4.0%
4/100 • Number of events 4 • 5 years
Gastrointestinal disorders
abdominal pain
2.0%
2/100 • Number of events 2 • 5 years
Endocrine disorders
gynecomastia
1.0%
1/100 • Number of events 1 • 5 years
Gastrointestinal disorders
nausea
11.0%
11/100 • Number of events 11 • 5 years
Gastrointestinal disorders
mouth sores
7.0%
7/100 • Number of events 7 • 5 years
Blood and lymphatic system disorders
gum bleeding
9.0%
9/100 • Number of events 9 • 5 years
General disorders
back pain
6.0%
6/100 • Number of events 6 • 5 years
Musculoskeletal and connective tissue disorders
tendonitis
1.0%
1/100 • Number of events 1 • 5 years
Nervous system disorders
lightheadness
4.0%
4/100 • Number of events 4 • 5 years
Nervous system disorders
depression
1.0%
1/100 • Number of events 1 • 5 years
General disorders
knee pain
3.0%
3/100 • Number of events 3 • 5 years
Infections and infestations
upper respiratory tract infection
40.0%
40/100 • Number of events 48 • 5 years
Infections and infestations
urinary tract infection
6.0%
6/100 • Number of events 6 • 5 years
General disorders
hepatic pain
3.0%
3/100 • Number of events 3 • 5 years
Musculoskeletal and connective tissue disorders
arthritis
2.0%
2/100 • Number of events 2 • 5 years
Respiratory, thoracic and mediastinal disorders
cough
2.0%
2/100 • Number of events 4 • 5 years
Infections and infestations
viral infection
1.0%
1/100 • Number of events 1 • 5 years
General disorders
myalgia
6.0%
6/100 • Number of events 6 • 5 years
Gastrointestinal disorders
constipation
5.0%
5/100 • Number of events 5 • 5 years
Cardiac disorders
palpitations
2.0%
2/100 • Number of events 2 • 5 years
General disorders
dizziness
3.0%
3/100 • Number of events 3 • 5 years
General disorders
weight gain
3.0%
3/100 • Number of events 3 • 5 years
Skin and subcutaneous tissue disorders
sclerodactyly
1.0%
1/100 • Number of events 1 • 5 years
Endocrine disorders
hyperparathyroid
1.0%
1/100 • Number of events 1 • 5 years
Blood and lymphatic system disorders
petechiae
13.0%
13/100 • Number of events 13 • 5 years
Musculoskeletal and connective tissue disorders
cramps
4.0%
4/100 • Number of events 4 • 5 years
Metabolism and nutrition disorders
decreased potassium
1.0%
1/100 • Number of events 1 • 5 years
Ear and labyrinth disorders
hearing loss
1.0%
1/100 • Number of events 1 • 5 years
Blood and lymphatic system disorders
elevated hemoglobin
2.0%
2/100 • Number of events 2 • 5 years
Blood and lymphatic system disorders
hemolysis
1.0%
1/100 • Number of events 1 • 5 years
Cardiac disorders
lower extremity edema
1.0%
1/100 • Number of events 1 • 5 years
Cardiac disorders
peripheral vascular disease
1.0%
1/100 • Number of events 1 • 5 years
Skin and subcutaneous tissue disorders
rosacea
1.0%
1/100 • Number of events 1 • 5 years
Ear and labyrinth disorders
earache
2.0%
2/100 • Number of events 2 • 5 years
Immune system disorders
allergic reaction
7.0%
7/100 • Number of events 7 • 5 years
Hepatobiliary disorders
elevated liver function tests
3.0%
3/100 • Number of events 3 • 5 years
Infections and infestations
strept throat
1.0%
1/100 • Number of events 2 • 5 years
Immune system disorders
post nasal drip
1.0%
1/100 • Number of events 1 • 5 years
General disorders
diaphoresis
1.0%
1/100 • Number of events 1 • 5 years
Skin and subcutaneous tissue disorders
acne
1.0%
1/100 • Number of events 1 • 5 years
Skin and subcutaneous tissue disorders
furuncle
1.0%
1/100 • Number of events 1 • 5 years
Skin and subcutaneous tissue disorders
nail changes
1.0%
1/100 • Number of events 1 • 5 years
Skin and subcutaneous tissue disorders
skin lesions
3.0%
3/100 • Number of events 3 • 5 years
Endocrine disorders
hypothyroidism
1.0%
1/100 • Number of events 1 • 5 years
Gastrointestinal disorders
anorexia
1.0%
1/100 • Number of events 1 • 5 years
Gastrointestinal disorders
esophageal stricture
1.0%
1/100 • Number of events 1 • 5 years
Gastrointestinal disorders
abdominal discomfort
3.0%
3/100 • Number of events 3 • 5 years
Gastrointestinal disorders
duodenal ulcer
1.0%
1/100 • Number of events 1 • 5 years
Gastrointestinal disorders
gingival hyperplasia
1.0%
1/100 • Number of events 1 • 5 years
Gastrointestinal disorders
heartburn
1.0%
1/100 • Number of events 1 • 5 years
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
endometrial benign polyp
1.0%
1/100 • Number of events 1 • 5 years
Blood and lymphatic system disorders
ear bleeding
1.0%
1/100 • Number of events 1 • 5 years
Blood and lymphatic system disorders
trauma bleeding
1.0%
1/100 • Number of events 1 • 5 years
Blood and lymphatic system disorders
vaginal bleeding
2.0%
2/100 • Number of events 2 • 5 years
Blood and lymphatic system disorders
blood blisters
1.0%
1/100 • Number of events 1 • 5 years
Blood and lymphatic system disorders
blood in stool
3.0%
3/100 • Number of events 3 • 5 years
Blood and lymphatic system disorders
bruising
9.0%
9/100 • Number of events 9 • 5 years
Blood and lymphatic system disorders
epistaxis
6.0%
6/100 • Number of events 6 • 5 years
Blood and lymphatic system disorders
heavy menses
2.0%
2/100 • Number of events 2 • 5 years
Blood and lymphatic system disorders
retinal hemorrhage
1.0%
1/100 • Number of events 1 • 5 years
Blood and lymphatic system disorders
subconjunctival hemorrhage
1.0%
1/100 • Number of events 1 • 5 years
Infections and infestations
catheter related sepsis
1.0%
1/100 • Number of events 2 • 5 years
Infections and infestations
gastritis
1.0%
1/100 • Number of events 1 • 5 years
Infections and infestations
localized infection
1.0%
1/100 • Number of events 1 • 5 years
Infections and infestations
strep throat
1.0%
1/100 • Number of events 2 • 5 years
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
prostate malignancy
1.0%
1/100 • Number of events 1 • 5 years
Musculoskeletal and connective tissue disorders
neck stiffness
1.0%
1/100 • Number of events 1 • 5 years
Nervous system disorders
anxiety
1.0%
1/100 • Number of events 1 • 5 years
Nervous system disorders
insomnia
2.0%
2/100 • Number of events 2 • 5 years
Nervous system disorders
sensory neuropathy
1.0%
1/100 • Number of events 1 • 5 years
Nervous system disorders
vertigo
1.0%
1/100 • Number of events 1 • 5 years
General disorders
bone pain
4.0%
4/100 • Number of events 4 • 5 years
General disorders
joint pain
1.0%
1/100 • Number of events 2 • 5 years
General disorders
leg pain
3.0%
3/100 • Number of events 3 • 5 years

Additional Information

Neal Young MD

NIH National Heart, Lung and Blood Institute

Phone: 301-496-5093

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place