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Table 1 Baseline Patient Demographics and Disease Characteristics

From: Safety outcomes and patients’ preferences for home-based intravenous enzyme replacement therapy (ERT) in pompe disease and mucopolysaccharidosis type I (MPS I) disorder: COVID-19 and beyond

 

Cohort A

(N = 32)

Cohort B

(N = 6)

Total

(N = 38)

Demographics

Age (years)

   

Mean (SD)

45.9 (24.50)

23.2 (13.72)

42.3 (24.48)

Q1; Q3

22.5; 66.5

14.0; 37.0

19.0; 65.0

Range

3; 78

9; 43

3; 78

Age, n (%)

   

0–18 years

6 (18.75)

3 (50.00)

9 (23.68)

19–35 years

7 (21.88)

1 (16.67)

8 (21.05)

36–55 years

3 (9.38)

2 (33.33)

5 (13.16)

56–70 years

11 (34.38)

0

11 (28.95)

over 70 years

5 (15.63)

0

5 (13.16)

Sex, n (%)

   

Female

16 (50.00)

3 (50.00)

19 (50.00)

Male

16 (50.00)

3 (50.00)

19 (50.00)

Disease Characteristics

Diagnosis, n (%)

   

MPS I disease

   

Hurler – Scheie

0

3 (50.00)

3 (7.89)

Scheie for MPS I

0

3 (50.00)

3 (7.89)

Pompe disease

   

Infantile-onset Pompe Disease

5 (15.63)

0

5 (13.16)

Late-onset Pompe Disease

27 (84.38)

0

27 (71.05)

Cognitive delay, n (%)

   

No

32 (100.00)

4 (66.67)

36 (94.74)

Yes

0

2 (33.33)

2 (5.26)

Age at diagnosis (years)

   

Mean (SD)

31.3 (23.53)

10.0 (9.06)

28.0 (23.18)

Q1; Q3

4.5; 52.0

5.0; 10.0

5.0; 50.0

Range

0; 64

4; 28

0; 64

Age at start of ERT administration in hospital setting (years)

Mean (SD)

35.4 (25.16)

12.7 (9.79)

31.8 (24.77)

Q1; Q3

9.5; 58.5

6.0; 20.0

7.0; 54.0

Range

0; 66

4; 29

0; 66

Time from diagnosis to start of ERT administration in hospital setting (months)

Mean (SD)

50.5 (61.44)

31.0 (60.29)

47.4 (60.88)

Q1; Q3

3.5; 100.5

5.0; 10.0

4.0; 99.0

Range

0; 211

4; 154

0; 211

Patients Starting The ERT Administration In A Homecare Setting, N (%) *

30 (93.75)

6 (100.00)

36 (94.74)

Reasons for switching to homecare setting, n (%) *

COVID-19 related

19 (63.33)

1 (16.67)

20 (55.56)

Patient request

8 (26.67)

3 (50.00)

11 (30.56)

Center distant

3 (10.00)

0

3 (8.33)

Other

0

2 (33.33)

2 (5.56)

Age at start of ERT administration in a homecare setting (years)*

Mean (SD)

47.9 (22.87)

17.7 (15.64)

42.8 (24.46)

Q1; Q3

26.0; 67.0

7.0; 34.0

19.5; 64.5

Range

8; 78

5; 41

5; 78

Time from diagnosis to start of ERT administration in homecare setting (months)*

Mean (SD)

173.2 (85.79)

93.7 (126.51)

159.9 (96.37)

Q1; Q3

102.0; 248.0

15.0; 157.0

83.0; 238.5

Range

12; 315

15; 326

12; 326

Time to switch to homecare setting (months)*

Mean (SD)

119.2 (52.76)

62.5 (75.78)

109.8 (59.89)

Q1; Q3

82.0; 168.0

11.0; 147.0

58.5; 163.5

Range

10; 200

8; 172

8; 200

Time from start of ERT administration in homecare setting to screening (months)*

Mean (SD)

14.6 (7.51)

69.5 (40.41)

23.8 (26.66)

Q1; Q3

9.0; 19.0

27.0; 106.0

10.0; 23.0

Range

0; 26

26; 116

0; 116

Patients who started the ERT administration in homecare setting prior to enrollment,

n (%)*

No

3 (9.38)

0

3 (7.89)

Yes

29 (90.63)

6 (100.00)

35 (92.11)

Other Medical Conditions

   

Patients with prior medical conditions, n (%)

16 (50.00)

6 (100.00)

22 (57.89)

Patients with ongoing medical conditions,

n (%)

26 (81.25)

5 (83.33)

31 (81.58)

Patients reporting the presence of any significant respiratory disease, n (%)

18 (56.25)

1 (16.67)

19 (50.00)

Patients with evidence of serious obstructive airway disease, n (%) $

   

Other

10 (55.56)

1 (100.00)

11 (57.89)

Respiratory Failure

8 (44.44)

0

8 (42.11)

Predicted forced vital capacity, (%) $

   

n

18

1

19

Mean (SD)

50.4 (20.07)

38.0

49.8 (19.71)

Q1; Q3

36.0; 68.0

38.0; 38.0

36.0; 68.0

Range

10; 82

38; 38

10; 82

  1. Q1 = 1st quartile; Q3 = 3rd quartile; SD = Standard Deviation.
  2. Percentages were computed on patients belonging to the Enrolled population within each considered group.
  3. * Computed only for patients starting the homecare setting administration.
  4. $ Computed only for patients reporting the presence of any significant respiratory disease.
  5. Cohort A is consisting of Pompe disease patients receiving Myozyme in a homecare setting, while cohort B is composed of MPS I patients receiving Aldurazyme in a homecare setting.
  6. Age at start date of ERT administration in hospital setting (years) is calculated as: age at diagnosis + (start date of ERT in hospital setting – date of diagnosis)/365.25.
  7. Time from diagnosis to start of ERT administration in hospital setting (months) is calculated as: (start date of ERT administration in hospital setting - date of diagnosis)/30.4375.
  8. Age at start of ERT administration in a homecare setting (years) is calculated as: age at diagnosis + (start date of ERT in homecare setting – date of diagnosis)/365.25.
  9. Time from diagnosis to start of ERT administration in homecare setting (months) is calculated as: (start date of ERT administration in homecare setting - date of diagnosis)/30.4375.
  10. Time to switch to homecare setting (months) is calculated as: (start date of ERT administration in homecare setting – start date of ERT administration in hospital setting)/30.4375.
  11. Time from start of ERT administration in homecare setting to screening (months) is calculated as: (Screening visit - start date of ERT administration in homecare setting)/30.4375.