Trial Outcomes & Findings for Study of Parkinson's Early Stage With Deferiprone (NCT NCT02728843)

NCT ID: NCT02728843

Last Updated: 2024-04-10

Results Overview

Change from baseline to Month 9 in the score for the Part III subscale (motor examination) of the MDS-UPDRS. Scores on this subscale can range from 0 (best) to 132 (worst); hence, an increase would indicate progression of the disease and a decrease would indicate improvement. The change in score was calculated as least square means.

Recruitment status

COMPLETED

Study phase

PHASE2

Target enrollment

140 participants

Primary outcome timeframe

Nine months

Results posted on

2024-04-10

Participant Flow

Participant milestones

Participant milestones
Measure
Placebo
Depending on dosage cohort, either one half-tablet, one tablet, one and a half tablets, or two tablets of placebo, twice a day Placebo: Tablets that match the deferiprone tablets in appearance
Deferiprone 300 mg
One-half of a 600 mg tablet of deferiprone twice a day, for a total daily dosage of 600 mg Deferiprone: 600 mg tablets
Deferiprone 600 mg
One 600 mg tablet of deferiprone twice a day, for a total daily dosage of 1200 mg Deferiprone: 600 mg tablets
Deferiprone 900 mg
One and a half 600 mg tablets of deferiprone twice a day, for a total daily dosage of 1800 mg Deferiprone: 600 mg tablets
Deferiprone 1200 mg
Two 600 mg tablets of deferiprone twice a day, for a total daily dosage of 2400 mg Deferiprone: 600 mg tablets
Overall Study
STARTED
28
28
28
28
28
Overall Study
COMPLETED
25
23
20
22
23
Overall Study
NOT COMPLETED
3
5
8
6
5

Reasons for withdrawal

Reasons for withdrawal
Measure
Placebo
Depending on dosage cohort, either one half-tablet, one tablet, one and a half tablets, or two tablets of placebo, twice a day Placebo: Tablets that match the deferiprone tablets in appearance
Deferiprone 300 mg
One-half of a 600 mg tablet of deferiprone twice a day, for a total daily dosage of 600 mg Deferiprone: 600 mg tablets
Deferiprone 600 mg
One 600 mg tablet of deferiprone twice a day, for a total daily dosage of 1200 mg Deferiprone: 600 mg tablets
Deferiprone 900 mg
One and a half 600 mg tablets of deferiprone twice a day, for a total daily dosage of 1800 mg Deferiprone: 600 mg tablets
Deferiprone 1200 mg
Two 600 mg tablets of deferiprone twice a day, for a total daily dosage of 2400 mg Deferiprone: 600 mg tablets
Overall Study
Adverse Event
0
2
3
1
2
Overall Study
Lack of Efficacy
0
1
1
0
0
Overall Study
Protocol Violation
2
0
4
2
2
Overall Study
Withdrawal by Subject
1
0
0
1
0
Overall Study
Use of rescue medication
0
2
0
2
1

Baseline Characteristics

Study of Parkinson's Early Stage With Deferiprone

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
300 mg
n=27 Participants
Patients took 300 mg deferiprone twice daily, for a total daily dosage of 600 mg
600 mg
n=26 Participants
Patients took 600 mg deferiprone twice daily, for a total daily dosage of 1200 mg
900 mg
n=25 Participants
Patients took 900 mg deferiprone twice daily, for a total daily dosage of 1800 mg
1200 mg
n=28 Participants
Patients took 1200 mg deferiprone twice daily, for a total daily dosage of 2400 mg
Placebo
n=27 Participants
Depending on which dosage cohort they were in, patients took a number of placebo tablets that matched the number of tablets taken by patients receiving active product
Total
n=133 Participants
Total of all reporting groups
Age, Continuous
61.5 years
STANDARD_DEVIATION 8.7 • n=5 Participants
63.2 years
STANDARD_DEVIATION 8.5 • n=7 Participants
59.8 years
STANDARD_DEVIATION 10.2 • n=5 Participants
60.3 years
STANDARD_DEVIATION 8.7 • n=4 Participants
61.9 years
STANDARD_DEVIATION 9.2 • n=21 Participants
61.4 years
STANDARD_DEVIATION 9.0 • n=10 Participants
Sex: Female, Male
Female
10 Participants
n=5 Participants
6 Participants
n=7 Participants
6 Participants
n=5 Participants
15 Participants
n=4 Participants
6 Participants
n=21 Participants
43 Participants
n=10 Participants
Sex: Female, Male
Male
17 Participants
n=5 Participants
20 Participants
n=7 Participants
19 Participants
n=5 Participants
13 Participants
n=4 Participants
21 Participants
n=21 Participants
90 Participants
n=10 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
1 Participants
n=4 Participants
1 Participants
n=21 Participants
3 Participants
n=10 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
26 Participants
n=5 Participants
26 Participants
n=7 Participants
25 Participants
n=5 Participants
26 Participants
n=4 Participants
26 Participants
n=21 Participants
129 Participants
n=10 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
1 Participants
n=4 Participants
0 Participants
n=21 Participants
1 Participants
n=10 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=10 Participants
Race (NIH/OMB)
Asian
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
1 Participants
n=4 Participants
0 Participants
n=21 Participants
1 Participants
n=10 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=10 Participants
Race (NIH/OMB)
Black or African American
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=10 Participants
Race (NIH/OMB)
White
27 Participants
n=5 Participants
25 Participants
n=7 Participants
25 Participants
n=5 Participants
26 Participants
n=4 Participants
27 Participants
n=21 Participants
130 Participants
n=10 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
1 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
1 Participants
n=10 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
1 Participants
n=4 Participants
0 Participants
n=21 Participants
1 Participants
n=10 Participants
Region of Enrollment
Canada
0 participants
n=5 Participants
0 participants
n=7 Participants
1 participants
n=5 Participants
1 participants
n=4 Participants
1 participants
n=21 Participants
3 participants
n=10 Participants
Region of Enrollment
United Kingdom
6 participants
n=5 Participants
4 participants
n=7 Participants
3 participants
n=5 Participants
6 participants
n=4 Participants
6 participants
n=21 Participants
25 participants
n=10 Participants
Region of Enrollment
France
17 participants
n=5 Participants
19 participants
n=7 Participants
18 participants
n=5 Participants
21 participants
n=4 Participants
18 participants
n=21 Participants
93 participants
n=10 Participants
Region of Enrollment
Germany
4 participants
n=5 Participants
3 participants
n=7 Participants
3 participants
n=5 Participants
0 participants
n=4 Participants
2 participants
n=21 Participants
12 participants
n=10 Participants
MDS-UPDRS Total Score
29.7 units on a scale
STANDARD_DEVIATION 11.6 • n=5 Participants
31.1 units on a scale
STANDARD_DEVIATION 13.3 • n=7 Participants
29.8 units on a scale
STANDARD_DEVIATION 12.3 • n=5 Participants
24.5 units on a scale
STANDARD_DEVIATION 10.7 • n=4 Participants
27.4 units on a scale
STANDARD_DEVIATION 12.3 • n=21 Participants
28.4 units on a scale
STANDARD_DEVIATION 12.1 • n=10 Participants
MDS-UPDRS Part I
6.2 units on a scale
STANDARD_DEVIATION 4.1 • n=5 Participants
5.7 units on a scale
STANDARD_DEVIATION 3.0 • n=7 Participants
5.9 units on a scale
STANDARD_DEVIATION 3.4 • n=5 Participants
5.3 units on a scale
STANDARD_DEVIATION 2.4 • n=4 Participants
5.0 units on a scale
STANDARD_DEVIATION 3.1 • n=21 Participants
5.6 units on a scale
STANDARD_DEVIATION 3.2 • n=10 Participants
MDS-UPDRS Part II
4.1 units on a scale
STANDARD_DEVIATION 3.5 • n=5 Participants
5.8 units on a scale
STANDARD_DEVIATION 3.9 • n=7 Participants
5.7 units on a scale
STANDARD_DEVIATION 5.0 • n=5 Participants
3.9 units on a scale
STANDARD_DEVIATION 3.1 • n=4 Participants
6.1 units on a scale
STANDARD_DEVIATION 4.0 • n=21 Participants
5.1 units on a scale
STANDARD_DEVIATION 4.0 • n=10 Participants
MDS-UPDRS Part III
19.1 units on a scale
STANDARD_DEVIATION 7.8 • n=5 Participants
19.4 units on a scale
STANDARD_DEVIATION 10.4 • n=7 Participants
18.1 units on a scale
STANDARD_DEVIATION 7.8 • n=5 Participants
15.1 units on a scale
STANDARD_DEVIATION 8.5 • n=4 Participants
16.3 units on a scale
STANDARD_DEVIATION 9.1 • n=21 Participants
17.6 units on a scale
STANDARD_DEVIATION 8.8 • n=10 Participants
MDS-UPDRS Part II/Part III
23.2 units on a scale
STANDARD_DEVIATION 10.1 • n=5 Participants
25.2 units on a scale
STANDARD_DEVIATION 12.4 • n=7 Participants
23.8 units on a scale
STANDARD_DEVIATION 10.8 • n=5 Participants
19.1 units on a scale
STANDARD_DEVIATION 9.9 • n=4 Participants
22.4 units on a scale
STANDARD_DEVIATION 10.6 • n=21 Participants
22.7 units on a scale
STANDARD_DEVIATION 10.8 • n=10 Participants
MDS-UPDRS Part IV
0.2 units on a scale
STANDARD_DEVIATION 0.8 • n=5 Participants
0.2 units on a scale
STANDARD_DEVIATION 0.8 • n=7 Participants
0.1 units on a scale
STANDARD_DEVIATION 0.6 • n=5 Participants
0.2 units on a scale
STANDARD_DEVIATION 0.8 • n=4 Participants
0.0 units on a scale
STANDARD_DEVIATION 0.2 • n=21 Participants
0.2 units on a scale
STANDARD_DEVIATION 0.7 • n=10 Participants
Montreal Cognitive Assessment
27.7 units on a scale
STANDARD_DEVIATION 1.3 • n=5 Participants
28.1 units on a scale
STANDARD_DEVIATION 1.7 • n=7 Participants
27.3 units on a scale
STANDARD_DEVIATION 1.9 • n=5 Participants
27.5 units on a scale
STANDARD_DEVIATION 2.0 • n=4 Participants
27.1 units on a scale
STANDARD_DEVIATION 1.9 • n=21 Participants
27.6 units on a scale
STANDARD_DEVIATION 1.8 • n=10 Participants

PRIMARY outcome

Timeframe: Nine months

Population: Intent-to-treat (ITT) population

Change from baseline to Month 9 in the score for the Part III subscale (motor examination) of the MDS-UPDRS. Scores on this subscale can range from 0 (best) to 132 (worst); hence, an increase would indicate progression of the disease and a decrease would indicate improvement. The change in score was calculated as least square means.

Outcome measures

Outcome measures
Measure
Placebo
n=27 Participants
Depending on dosage cohort, either one half-tablet, one tablet, one and a half tablets, or two tablets of placebo, twice a day Placebo: Tablets that match the deferiprone tablets in appearance
Deferiprone 300 mg
n=27 Participants
One-half of a 600 mg tablet of deferiprone twice a day, for a total daily dosage of 600 mg Deferiprone: 600 mg tablets
Deferiprone 600 mg
n=26 Participants
One 600 mg tablet of deferiprone twice a day, for a total daily dosage of 1200 mg Deferiprone: 600 mg tablets
Deferiprone 900 mg
n=25 Participants
One and a half 600 mg tablets of deferiprone twice a day, for a total daily dosage of 1800 mg Deferiprone: 600 mg tablets
Deferiprone 1200 mg
n=28 Participants
Two 600 mg tablets of deferiprone twice a day, for a total daily dosage of 2400 mg Deferiprone: 600 mg tablets
Change in Score on the Part III Subscale of the Movement Disorder Society-Unified Parkinson's Disease Rating Scale (MDS-UPDRS)
2.1 Score on a scale
Standard Error 1.4
4.2 Score on a scale
Standard Error 1.4
-0.8 Score on a scale
Standard Error 1.5
3.9 Score on a scale
Standard Error 1.5
2.2 Score on a scale
Standard Error 1.4

SECONDARY outcome

Timeframe: Nine months

Population: ITT population

Change from baseline to Month 9 in total score on the MDS-UPDRS. The total score can range from 0 (best) to 260 (worst); hence, an increase would indicate progression of the disease and a decrease would indicate improvement. The change in score was calculated as least square means.

Outcome measures

Outcome measures
Measure
Placebo
n=27 Participants
Depending on dosage cohort, either one half-tablet, one tablet, one and a half tablets, or two tablets of placebo, twice a day Placebo: Tablets that match the deferiprone tablets in appearance
Deferiprone 300 mg
n=27 Participants
One-half of a 600 mg tablet of deferiprone twice a day, for a total daily dosage of 600 mg Deferiprone: 600 mg tablets
Deferiprone 600 mg
n=26 Participants
One 600 mg tablet of deferiprone twice a day, for a total daily dosage of 1200 mg Deferiprone: 600 mg tablets
Deferiprone 900 mg
n=25 Participants
One and a half 600 mg tablets of deferiprone twice a day, for a total daily dosage of 1800 mg Deferiprone: 600 mg tablets
Deferiprone 1200 mg
n=28 Participants
Two 600 mg tablets of deferiprone twice a day, for a total daily dosage of 2400 mg Deferiprone: 600 mg tablets
Change in Total Score on the MDS-UPDRS
4.1 Score on a scale
Standard Error 1.9
7.8 Score on a scale
Standard Error 1.9
0.5 Score on a scale
Standard Error 2.1
6.6 Score on a scale
Standard Error 2.1
5.9 Score on a scale
Standard Error 2.0

SECONDARY outcome

Timeframe: Nine months

Population: ITT population

Change from baseline to Month 9 in the score for the Part I subscale (mentation, behavior, and mood) of the MDS-UPDRS. Scores on this subscale can range from 0 (best) to 52 (worst); hence, an increase would indicate progression of the disease and a decrease would indicate improvement. The change in score was calculated as least square means.

Outcome measures

Outcome measures
Measure
Placebo
n=27 Participants
Depending on dosage cohort, either one half-tablet, one tablet, one and a half tablets, or two tablets of placebo, twice a day Placebo: Tablets that match the deferiprone tablets in appearance
Deferiprone 300 mg
n=27 Participants
One-half of a 600 mg tablet of deferiprone twice a day, for a total daily dosage of 600 mg Deferiprone: 600 mg tablets
Deferiprone 600 mg
n=26 Participants
One 600 mg tablet of deferiprone twice a day, for a total daily dosage of 1200 mg Deferiprone: 600 mg tablets
Deferiprone 900 mg
n=25 Participants
One and a half 600 mg tablets of deferiprone twice a day, for a total daily dosage of 1800 mg Deferiprone: 600 mg tablets
Deferiprone 1200 mg
n=28 Participants
Two 600 mg tablets of deferiprone twice a day, for a total daily dosage of 2400 mg Deferiprone: 600 mg tablets
Change in Score on the Part I Subscale of the MDS-UPDRS
0.8 Score on a scale
Standard Error 0.7
1.0 Score on a scale
Standard Error 0.7
0.3 Score on a scale
Standard Error 0.7
0.3 Score on a scale
Standard Error 0.7
1.1 Score on a scale
Standard Error 0.7

SECONDARY outcome

Timeframe: Nine months

Population: ITT population

Change from baseline to Month 9 in the score for the Part II subscale (activities of daily living) of the MDS-UPDRS. Scores on this subscale can range from 0 (best) to 52 (worst); hence, an increase would indicate progression of the disease and a decrease would indicate improvement. The change in score was calculated as least square means.

Outcome measures

Outcome measures
Measure
Placebo
n=27 Participants
Depending on dosage cohort, either one half-tablet, one tablet, one and a half tablets, or two tablets of placebo, twice a day Placebo: Tablets that match the deferiprone tablets in appearance
Deferiprone 300 mg
n=27 Participants
One-half of a 600 mg tablet of deferiprone twice a day, for a total daily dosage of 600 mg Deferiprone: 600 mg tablets
Deferiprone 600 mg
n=26 Participants
One 600 mg tablet of deferiprone twice a day, for a total daily dosage of 1200 mg Deferiprone: 600 mg tablets
Deferiprone 900 mg
n=25 Participants
One and a half 600 mg tablets of deferiprone twice a day, for a total daily dosage of 1800 mg Deferiprone: 600 mg tablets
Deferiprone 1200 mg
n=28 Participants
Two 600 mg tablets of deferiprone twice a day, for a total daily dosage of 2400 mg Deferiprone: 600 mg tablets
Change in Score on the Part II Subscale of the MDS-UPDRS
1.1 Score on a scale
Standard Error 0.6
2.2 Score on a scale
Standard Error 0.6
0.6 Score on a scale
Standard Error 0.6
2.1 Score on a scale
Standard Error 0.6
1.8 Score on a scale
Standard Error 0.6

SECONDARY outcome

Timeframe: Nine months

Population: ITT population

Change from baseline to Month 9 in the score for the Part IV subscale (motor complications) of the MDS-UPDRS. Scores on this subscale can range from 0 (best) to 24 (worst); hence, an increase would indicate progression of the disease and a decrease would indicate improvement. The change in score was calculated as least square means.

Outcome measures

Outcome measures
Measure
Placebo
n=27 Participants
Depending on dosage cohort, either one half-tablet, one tablet, one and a half tablets, or two tablets of placebo, twice a day Placebo: Tablets that match the deferiprone tablets in appearance
Deferiprone 300 mg
n=27 Participants
One-half of a 600 mg tablet of deferiprone twice a day, for a total daily dosage of 600 mg Deferiprone: 600 mg tablets
Deferiprone 600 mg
n=26 Participants
One 600 mg tablet of deferiprone twice a day, for a total daily dosage of 1200 mg Deferiprone: 600 mg tablets
Deferiprone 900 mg
n=25 Participants
One and a half 600 mg tablets of deferiprone twice a day, for a total daily dosage of 1800 mg Deferiprone: 600 mg tablets
Deferiprone 1200 mg
n=28 Participants
Two 600 mg tablets of deferiprone twice a day, for a total daily dosage of 2400 mg Deferiprone: 600 mg tablets
Change in Score in the Part IV Subscale of the MDS-UPDRS
-0.1 Score on a scale
Standard Error 0.2
0.2 Score on a scale
Standard Error 0.2
0.3 Score on a scale
Standard Error 0.2
0.2 Score on a scale
Standard Error 0.2
0.4 Score on a scale
Standard Error 0.2

SECONDARY outcome

Timeframe: Nine months

Population: ITT population

Change from baseline to Month 9 in the combined score for the Part II subscale (motor experiences of daily living) and the Part III subscale (motor examination) of the MDS-UPDRS. The scales for these two parts range from 0 (best) to 52 (worst) and from 0 (best) to 132 (worst), respectively. Hence, the combined score can range from 0 (best) to 184 (worst), and an increase would indicate progression of the disease and a decrease would indicate improvement. The change in score is presented as least square means.

Outcome measures

Outcome measures
Measure
Placebo
n=27 Participants
Depending on dosage cohort, either one half-tablet, one tablet, one and a half tablets, or two tablets of placebo, twice a day Placebo: Tablets that match the deferiprone tablets in appearance
Deferiprone 300 mg
n=27 Participants
One-half of a 600 mg tablet of deferiprone twice a day, for a total daily dosage of 600 mg Deferiprone: 600 mg tablets
Deferiprone 600 mg
n=26 Participants
One 600 mg tablet of deferiprone twice a day, for a total daily dosage of 1200 mg Deferiprone: 600 mg tablets
Deferiprone 900 mg
n=25 Participants
One and a half 600 mg tablets of deferiprone twice a day, for a total daily dosage of 1800 mg Deferiprone: 600 mg tablets
Deferiprone 1200 mg
n=28 Participants
Two 600 mg tablets of deferiprone twice a day, for a total daily dosage of 2400 mg Deferiprone: 600 mg tablets
Change in the Combined Scores From Parts II and III of the MDS-UPDRS
3.3 Score on a scale
Standard Error 1.6
6.5 Score on a scale
Standard Error 1.6
-0.3 Score on a scale
Standard Error 1.7
6.0 Score on a scale
Standard Error 1.7
4.3 Score on a scale
Standard Error 1.7

SECONDARY outcome

Timeframe: Nine months

Population: ITT population

Change from baseline to Month 9 in the score for overall cognitive function as assessed by the MoCA. The total score on the MoCA can range from 0 (worst) to 30 (best). Hence, a decrease in score would indicate progression of the disease and an increase would indicate improvement. The change in score is presented as least square means.

Outcome measures

Outcome measures
Measure
Placebo
n=27 Participants
Depending on dosage cohort, either one half-tablet, one tablet, one and a half tablets, or two tablets of placebo, twice a day Placebo: Tablets that match the deferiprone tablets in appearance
Deferiprone 300 mg
n=27 Participants
One-half of a 600 mg tablet of deferiprone twice a day, for a total daily dosage of 600 mg Deferiprone: 600 mg tablets
Deferiprone 600 mg
n=26 Participants
One 600 mg tablet of deferiprone twice a day, for a total daily dosage of 1200 mg Deferiprone: 600 mg tablets
Deferiprone 900 mg
n=25 Participants
One and a half 600 mg tablets of deferiprone twice a day, for a total daily dosage of 1800 mg Deferiprone: 600 mg tablets
Deferiprone 1200 mg
n=28 Participants
Two 600 mg tablets of deferiprone twice a day, for a total daily dosage of 2400 mg Deferiprone: 600 mg tablets
Change in Score on the Montreal Cognitive Assessment (MoCA) Test
1.1 Score on a scale
Standard Error 0.3
1.0 Score on a scale
Standard Error 0.3
0.9 Score on a scale
Standard Error 0.3
1.1 Score on a scale
Standard Error 0.3
1.4 Score on a scale
Standard Error 0.3

SECONDARY outcome

Timeframe: Nine months

Population: Safety population

Number of subjects with adverse events

Outcome measures

Outcome measures
Measure
Placebo
n=28 Participants
Depending on dosage cohort, either one half-tablet, one tablet, one and a half tablets, or two tablets of placebo, twice a day Placebo: Tablets that match the deferiprone tablets in appearance
Deferiprone 300 mg
n=28 Participants
One-half of a 600 mg tablet of deferiprone twice a day, for a total daily dosage of 600 mg Deferiprone: 600 mg tablets
Deferiprone 600 mg
n=28 Participants
One 600 mg tablet of deferiprone twice a day, for a total daily dosage of 1200 mg Deferiprone: 600 mg tablets
Deferiprone 900 mg
n=28 Participants
One and a half 600 mg tablets of deferiprone twice a day, for a total daily dosage of 1800 mg Deferiprone: 600 mg tablets
Deferiprone 1200 mg
n=28 Participants
Two 600 mg tablets of deferiprone twice a day, for a total daily dosage of 2400 mg Deferiprone: 600 mg tablets
Safety of Deferiprone
26 Participants
25 Participants
23 Participants
25 Participants
25 Participants

SECONDARY outcome

Timeframe: 4 hours

Population: Pharmacokinetics (PK) population: Included all patients who had sufficient PK data to derive at least one PK parameter.

Blood samples for pharmacokinetics assessments were collected at baseline, and at pre-dose and specified time points up to 12 hours post-dose at the Month 3 visit. The maximum measured serum concentration (Cmax) at the Month 3 visit was determined for deferiprone and its main metabolite, deferiprone 3-O-glucuronide.

Outcome measures

Outcome measures
Measure
Placebo
n=4 Participants
Depending on dosage cohort, either one half-tablet, one tablet, one and a half tablets, or two tablets of placebo, twice a day Placebo: Tablets that match the deferiprone tablets in appearance
Deferiprone 300 mg
n=2 Participants
One-half of a 600 mg tablet of deferiprone twice a day, for a total daily dosage of 600 mg Deferiprone: 600 mg tablets
Deferiprone 600 mg
n=5 Participants
One 600 mg tablet of deferiprone twice a day, for a total daily dosage of 1200 mg Deferiprone: 600 mg tablets
Deferiprone 900 mg
n=2 Participants
One and a half 600 mg tablets of deferiprone twice a day, for a total daily dosage of 1800 mg Deferiprone: 600 mg tablets
Deferiprone 1200 mg
Two 600 mg tablets of deferiprone twice a day, for a total daily dosage of 2400 mg Deferiprone: 600 mg tablets
Cmax for Serum Deferiprone and Deferiprone 3-O-glucuronide
Serum deferiprone
2.748 μg/mL
Standard Deviation 0.781
3.459 μg/mL
Standard Deviation 0.078
5.080 μg/mL
Standard Deviation 2.614
7.942 μg/mL
Standard Deviation 2.192
Cmax for Serum Deferiprone and Deferiprone 3-O-glucuronide
Serum deferiprone 3-O-glucuronide
7.844 μg/mL
Standard Deviation 0.936
12.419 μg/mL
Standard Deviation 2.218
21.914 μg/mL
Standard Deviation 8.309
32.632 μg/mL
Standard Deviation 2.167

SECONDARY outcome

Timeframe: 4 hours

Population: Pharmacokinetics population: Included all patients who had sufficient PK data to derive at least one PK parameter.

Blood samples for pharmacokinetics assessments were collected at baseline, and at pre-dose and specified time points up to 12 hours post-dose at the Month 3 visit. The time to maximum observed serum concentration (Tmax) at the Month 3 visit was determined for deferiprone and its main metabolite, deferiprone 3-O-glucuronide.

Outcome measures

Outcome measures
Measure
Placebo
n=4 Participants
Depending on dosage cohort, either one half-tablet, one tablet, one and a half tablets, or two tablets of placebo, twice a day Placebo: Tablets that match the deferiprone tablets in appearance
Deferiprone 300 mg
n=2 Participants
One-half of a 600 mg tablet of deferiprone twice a day, for a total daily dosage of 600 mg Deferiprone: 600 mg tablets
Deferiprone 600 mg
n=5 Participants
One 600 mg tablet of deferiprone twice a day, for a total daily dosage of 1200 mg Deferiprone: 600 mg tablets
Deferiprone 900 mg
n=2 Participants
One and a half 600 mg tablets of deferiprone twice a day, for a total daily dosage of 1800 mg Deferiprone: 600 mg tablets
Deferiprone 1200 mg
Two 600 mg tablets of deferiprone twice a day, for a total daily dosage of 2400 mg Deferiprone: 600 mg tablets
Tmax for Serum Deferiprone and Deferiprone 3-O-glucuronide
Serum deferiprone
2.00 Hours
Interval 1.67 to 2.33
2.17 Hours
Interval 2.0 to 2.33
2.00 Hours
Interval 0.58 to 2.67
1.67 Hours
Interval 1.33 to 2.0
Tmax for Serum Deferiprone and Deferiprone 3-O-glucuronide
Serum deferiprone 3-O-glucuronide
2.84 Hours
Interval 2.33 to 3.0
3.25 Hours
Interval 3.0 to 3.5
3.50 Hours
Interval 2.67 to 3.58
2.50 Hours
Interval 2.33 to 2.67

SECONDARY outcome

Timeframe: 4 hours

Population: Pharmacokinetics population: Included all patients who had sufficient PK data to derive at least one PK parameter.

Blood samples for pharmacokinetics assessments were collected at baseline, and at pre-dose and specified time points up to 12 hours post-dose at the Month 3 visit. The total drug exposure, AUC0-∞ (area under the serum concentration time curve extrapolated to infinity) at the Month 3 visit was determined for deferiprone and its main metabolite, deferiprone 3-O-glucuronide.

Outcome measures

Outcome measures
Measure
Placebo
n=4 Participants
Depending on dosage cohort, either one half-tablet, one tablet, one and a half tablets, or two tablets of placebo, twice a day Placebo: Tablets that match the deferiprone tablets in appearance
Deferiprone 300 mg
n=1 Participants
One-half of a 600 mg tablet of deferiprone twice a day, for a total daily dosage of 600 mg Deferiprone: 600 mg tablets
Deferiprone 600 mg
n=5 Participants
One 600 mg tablet of deferiprone twice a day, for a total daily dosage of 1200 mg Deferiprone: 600 mg tablets
Deferiprone 900 mg
n=2 Participants
One and a half 600 mg tablets of deferiprone twice a day, for a total daily dosage of 1800 mg Deferiprone: 600 mg tablets
Deferiprone 1200 mg
Two 600 mg tablets of deferiprone twice a day, for a total daily dosage of 2400 mg Deferiprone: 600 mg tablets
Area Under the Curve for Serum Deferiprone and Deferiprone 3-O-glucuronide
Serum deferiprone 3-O-glucuronide
39.057 μg*h/mL
Standard Deviation 7.820
62.679 μg*h/mL
121.128 μg*h/mL
Standard Deviation 43.727
147.397 μg*h/mL
Standard Deviation 6.502
Area Under the Curve for Serum Deferiprone and Deferiprone 3-O-glucuronide
Serum deferiprone
8.358 μg*h/mL
Standard Deviation 0.904
16.292 μg*h/mL
20.606 μg*h/mL
Standard Deviation 8.742
26.328 μg*h/mL
Standard Deviation 5.693

Adverse Events

Placebo

Serious events: 2 serious events
Other events: 26 other events
Deaths: 0 deaths

Deferiprone 300 mg

Serious events: 1 serious events
Other events: 25 other events
Deaths: 0 deaths

Deferiprone 600 mg

Serious events: 3 serious events
Other events: 23 other events
Deaths: 0 deaths

Deferiprone 900 mg

Serious events: 4 serious events
Other events: 25 other events
Deaths: 0 deaths

Deferiprone 1200 mg

Serious events: 1 serious events
Other events: 25 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
Placebo
n=28 participants at risk
Depending on dosage cohort, either one half-tablet, one tablet, one and a half tablets, or two tablets of placebo, twice a day Placebo: Tablets that match the deferiprone tablets in appearance
Deferiprone 300 mg
n=28 participants at risk
One-half of a 600 mg tablet of deferiprone twice a day, for a total daily dosage of 600 mg Deferiprone: 600 mg tablets
Deferiprone 600 mg
n=28 participants at risk
One 600 mg tablet of deferiprone twice a day, for a total daily dosage of 1200 mg Deferiprone: 600 mg tablets
Deferiprone 900 mg
n=28 participants at risk
One and a half 600 mg tablets of deferiprone twice a day, for a total daily dosage of 1800 mg Deferiprone: 600 mg tablets
Deferiprone 1200 mg
n=28 participants at risk
Two 600 mg tablets of deferiprone twice a day, for a total daily dosage of 2400 mg Deferiprone: 600 mg tablets
Blood and lymphatic system disorders
Neutropenia
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 2 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
3.6%
1/28 • Number of events 2 • 10 months
Cardiac disorders
Atrial fibrillation
3.6%
1/28 • Number of events 1 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
0.00%
0/28 • 10 months
Injury, poisoning and procedural complications
Head injury
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Renal cancer metastatic
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Squamous cell carcinoma
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
0.00%
0/28 • 10 months
Psychiatric disorders
Jealous delusion
3.6%
1/28 • Number of events 1 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
Renal and urinary disorders
Renal colic
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
0.00%
0/28 • 10 months
Renal and urinary disorders
Renal impairment
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
0.00%
0/28 • 10 months
Vascular disorders
Intermittent claudication
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months

Other adverse events

Other adverse events
Measure
Placebo
n=28 participants at risk
Depending on dosage cohort, either one half-tablet, one tablet, one and a half tablets, or two tablets of placebo, twice a day Placebo: Tablets that match the deferiprone tablets in appearance
Deferiprone 300 mg
n=28 participants at risk
One-half of a 600 mg tablet of deferiprone twice a day, for a total daily dosage of 600 mg Deferiprone: 600 mg tablets
Deferiprone 600 mg
n=28 participants at risk
One 600 mg tablet of deferiprone twice a day, for a total daily dosage of 1200 mg Deferiprone: 600 mg tablets
Deferiprone 900 mg
n=28 participants at risk
One and a half 600 mg tablets of deferiprone twice a day, for a total daily dosage of 1800 mg Deferiprone: 600 mg tablets
Deferiprone 1200 mg
n=28 participants at risk
Two 600 mg tablets of deferiprone twice a day, for a total daily dosage of 2400 mg Deferiprone: 600 mg tablets
Blood and lymphatic system disorders
Lymphopenia
7.1%
2/28 • Number of events 3 • 10 months
3.6%
1/28 • Number of events 4 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
Ear and labyrinth disorders
Vertigo
3.6%
1/28 • Number of events 3 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
Eye disorders
Cataract
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
Gastrointestinal disorders
Abdominal pain upper
3.6%
1/28 • Number of events 1 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
10.7%
3/28 • Number of events 3 • 10 months
Gastrointestinal disorders
Constipation
3.6%
1/28 • Number of events 1 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
10.7%
3/28 • Number of events 3 • 10 months
Gastrointestinal disorders
Diarrhoea
10.7%
3/28 • Number of events 3 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
3.6%
1/28 • Number of events 2 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
25.0%
7/28 • Number of events 8 • 10 months
Gastrointestinal disorders
Dyspepsia
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
Gastrointestinal disorders
Nausea
3.6%
1/28 • Number of events 1 • 10 months
14.3%
4/28 • Number of events 4 • 10 months
17.9%
5/28 • Number of events 5 • 10 months
7.1%
2/28 • Number of events 4 • 10 months
17.9%
5/28 • Number of events 5 • 10 months
Gastrointestinal disorders
Toothache
0.00%
0/28 • 10 months
14.3%
4/28 • Number of events 4 • 10 months
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
Gastrointestinal disorders
Vomiting
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 2 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
General disorders
Asthenia
0.00%
0/28 • 10 months
10.7%
3/28 • Number of events 4 • 10 months
7.1%
2/28 • Number of events 5 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
0.00%
0/28 • 10 months
General disorders
Chest discomfort
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
General disorders
Chest pain
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
General disorders
Condition aggravated
3.6%
1/28 • Number of events 1 • 10 months
17.9%
5/28 • Number of events 8 • 10 months
7.1%
2/28 • Number of events 3 • 10 months
21.4%
6/28 • Number of events 8 • 10 months
14.3%
4/28 • Number of events 5 • 10 months
General disorders
Fatigue
7.1%
2/28 • Number of events 2 • 10 months
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
14.3%
4/28 • Number of events 6 • 10 months
General disorders
Gait disturbance
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 3 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
0.00%
0/28 • 10 months
Infections and infestations
Gastroenteritis
10.7%
3/28 • Number of events 3 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 2 • 10 months
Infections and infestations
Nasopharyngitis
3.6%
1/28 • Number of events 2 • 10 months
10.7%
3/28 • Number of events 3 • 10 months
7.1%
2/28 • Number of events 5 • 10 months
17.9%
5/28 • Number of events 6 • 10 months
14.3%
4/28 • Number of events 4 • 10 months
Infections and infestations
Pharyngitis
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
Infections and infestations
Urinary tract infection
7.1%
2/28 • Number of events 2 • 10 months
7.1%
2/28 • Number of events 3 • 10 months
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
Injury, poisoning and procedural complications
Arthropod bite
7.1%
2/28 • Number of events 2 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
Injury, poisoning and procedural complications
Fall
3.6%
1/28 • Number of events 4 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
10.7%
3/28 • Number of events 4 • 10 months
7.1%
2/28 • Number of events 17 • 10 months
0.00%
0/28 • 10 months
Injury, poisoning and procedural complications
Limb injury
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
Investigations
Amylase increased
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
0.00%
0/28 • 10 months
Investigations
Blood urine present
7.1%
2/28 • Number of events 2 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
Investigations
Neutrophil count decreased
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 3 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 5 • 10 months
Musculoskeletal and connective tissue disorders
Arthralgia
10.7%
3/28 • Number of events 3 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
10.7%
3/28 • Number of events 3 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
Musculoskeletal and connective tissue disorders
Back pain
7.1%
2/28 • Number of events 2 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
10.7%
3/28 • Number of events 3 • 10 months
10.7%
3/28 • Number of events 3 • 10 months
14.3%
4/28 • Number of events 7 • 10 months
Musculoskeletal and connective tissue disorders
Joint swelling
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
Musculoskeletal and connective tissue disorders
Muscle spasms
0.00%
0/28 • 10 months
14.3%
4/28 • Number of events 4 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
Musculoskeletal and connective tissue disorders
Musculoskeletal pain
3.6%
1/28 • Number of events 1 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
Musculoskeletal and connective tissue disorders
Myalgia
3.6%
1/28 • Number of events 1 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
Musculoskeletal and connective tissue disorders
Pain in extremity
7.1%
2/28 • Number of events 2 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
10.7%
3/28 • Number of events 3 • 10 months
10.7%
3/28 • Number of events 4 • 10 months
Nervous system disorders
Akinesia
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 3 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
Nervous system disorders
Dizziness
3.6%
1/28 • Number of events 2 • 10 months
7.1%
2/28 • Number of events 3 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
3.6%
1/28 • Number of events 2 • 10 months
10.7%
3/28 • Number of events 6 • 10 months
Nervous system disorders
Headache
7.1%
2/28 • Number of events 6 • 10 months
21.4%
6/28 • Number of events 9 • 10 months
14.3%
4/28 • Number of events 4 • 10 months
17.9%
5/28 • Number of events 9 • 10 months
28.6%
8/28 • Number of events 29 • 10 months
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Parkinson's disease
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 3 • 10 months
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
Nervous system disorders
Sciatica
3.6%
1/28 • Number of events 1 • 10 months
3.6%
1/28 • Number of events 2 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
Nervous system disorders
Syncope
3.6%
1/28 • Number of events 1 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
10.7%
3/28 • Number of events 3 • 10 months
Nervous system disorders
Tremor
3.6%
1/28 • Number of events 1 • 10 months
10.7%
3/28 • Number of events 3 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
21.4%
6/28 • Number of events 8 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
Psychiatric disorders
Hallucination
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
Psychiatric disorders
Insomnia
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
Respiratory, thoracic and mediastinal disorders
Cough
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
0.00%
0/28 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
0.00%
0/28 • 10 months
Respiratory, thoracic and mediastinal disorders
Oropharyngeal pain
10.7%
3/28 • Number of events 3 • 10 months
3.6%
1/28 • Number of events 1 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
3.6%
1/28 • Number of events 2 • 10 months
10.7%
3/28 • Number of events 4 • 10 months
Skin and subcutaneous tissue disorders
Alopecia
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
Surgical and medical procedures
Cataract operation
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 3 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
Vascular disorders
Hypertension
14.3%
4/28 • Number of events 4 • 10 months
0.00%
0/28 • 10 months
0.00%
0/28 • 10 months
7.1%
2/28 • Number of events 2 • 10 months
0.00%
0/28 • 10 months

Additional Information

Caroline Fradette, PhD

Chiesi Canada Corp.

Phone: 1-800-854-3534

Results disclosure agreements

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

Restriction type: LTE60