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Table 3 Study characteristics of interventional studies

From: Systematic review of available evidence on 11 high-priced inpatient orphan drugs

 

Number (% of all effectiveness studies)

Control group

Random-ization

Open label

RCT*

Single center

International

Mean follow-up duration in weeks [min-max]

Mean number of patients [min-max]

ALL

2 (29%)

0

0

2

0

1

0

Unknown

39 [17-61]

CAPS

2 (22%)

1

1

1

1

0

2

64 [24-104]

99 [31-166]

CLL

2 (100%)

0

0

2

0

0

2

78 [52-104]

86 [33-138]

Fabry (α)

15 (22%)

8

8

7

6

4

5

35 [10-104]

26 [10-80]

Fabry (β)

10 (16%)

4

3

8

2

2

5

85 [20-234]

50 [13-134]

MPSI

3 (12%)

2

2

2

1

0

3

35 [26-52]

33 [20-45]

MPSII

3 (14%)

2

2

1

2

0

1

44 [26-53]

39 [10-96]

MPSVI

3 (13%)

0

1

2

0

0

2

95 [48-190]

8 [7-10]

PNH

4 (19%)

1

1

3

1

1

2

26 [12-52]

56 [11-97]

Pompe

8 (14%)

3

2

7

1

3

4

70 [26-120]

23 [5-90]

STS

12 (32%)

0

1

12

0

0

6

42 [9-104]

64 [13-270]

Total

64 (19%)

21

21

47

14

11

32

57 [9-234]

48 [7-270]

  1. *RCT = Placebo controlled, randomized, double-blind, clinical trial.