Table 1.
Characteristics and individual GLA mutations at baseline for the 15 patients enrolled in the study
Patient number (random) | GLA gene mutation | Associated phenotype, as reported in the literature | Reference | Age categorya | Duration of Fabry disease (years)b | Leukocyte α-Gal A activity (U/mg)/plasma α-Gal A activity (U/mL) |
---|---|---|---|---|---|---|
1 | 358Edel | Classic | Blanch et al. (1996) | B | 11.5 | 0.9/1.0 |
2 | c.256delT | Classic | Topaloglu et al. (1999) | C | 14.1 | NA/1.0 |
3 | c.717_718delAA | Classic | Blanch et al. (1996) | E | NA | 0.1/0.0 |
4 | R220X | Classic | Meaney et al. (1994) | C | 10.0 | 1.4c/NA |
5 | D322E | Classic | Lee et al. (2010) | E | 2.7 | NA/NA |
6 | NA | – | – | D | 18.8 | 3.5c/NA |
7 | R227Q | Classic | Eng et al. (1993) | C | 11.6 | 6.8c/0.1 |
8 | C56X | Classic | Shabbeer et al. (2006) | A | 8.1 | NA/NA |
9 | g.IVS4+919G>A | Late onset | Chien et al. (2013) and Eng et al. (1994) | A | 5.9 | 5.1c/NA |
10 | R112C | Classic | Shabbeer et al. (2006) | C | 3.1 | 0.4/0.2 |
11 | C202Y | Classic | Eng et al. (1997) | E | 1.9 | NA/0.1 |
12 | R227Q | Classic | Eng et al. (1993) | D | 8.6 | 0.1/0.1 |
13 | R112H | Late onset | Chien et al. (2013) and Eng et al. (1994) | B | 10.7 | 1.7c/0.1 |
14 | R227Q | Classic | Eng et al. (1993) | B | 8.3 | 0.1/0.1 |
15 | R301X | Classic | Eng et al. (1994) | F | 13.2 | ND/0.4 |
Mean (SD) | 28.5 (16.1) | 9.2 (4.7)d | ||||
Median (range) | 24.0 (5–61) | 9.3 (1.9–18.8) |
α-Gal A α-galactosidase A, NA not available, ND not detectable, SD standard deviation
aAge was calculated from the date of birth to the date of the first study infusion of agalsidase beta. To protect patients’ data privacy, age categories are used: A, >0 to ≤10 years; B, >10 to ≤20 years; C, >20 to ≤30 years; D, >30 to ≤40 years; E, >40 to ≤50 years; F, >50 years
bDuration of Fabry disease was calculated from the date of initial diagnosis of Fabry disease to the date of the first study infusion
cIn nmol/h/mg protein
d n = 14; the date of diagnosis was not available for one patient