Anti-α-galactosidase A antibody response to agalsidase beta treatment: data from the Fabry Registry.
Mol Genet Metab
; 105(3): 443-9, 2012 Mar.
Article
en En
| MEDLINE
| ID: mdl-22227322
ABSTRACT
Agalsidase beta, a form of recombinant human α-galactosidase A (αGAL), is approved for use as enzyme replacement therapy (ERT) for Fabry disease. An immunogenic response against a therapeutic protein could potentially impact its efficacy or safety. The development of anti-αGAL IgG antibodies was evaluated in 571 men and 251 women from the Fabry Registry who were treated with agalsidase beta. Most men developed antibodies (416 of 571, 73%), whereas most women did not (31 of 251, 12%). Women were also significantly more likely to tolerize than men; whereas 18 of 31 women tolerized (58%, 95%CI 52%-64%), only 47 of 416 men tolerized during the observation period (11%, 95% CI 8%-15%). Patients who eventually tolerized had lower median peak anti-αGAL IgG antibody titers than patients who remained seropositive at their most recent assessment (400 versus 3200 in men, 200 versus 400 in women, respectively). Patients with nonsense mutations in the GLA gene were more likely to develop anti-αGAL IgG antibodies than patients with missense mutations. Approximately 26% of men (151 of 571) reported infusion-associated reactions (IARs), compared to 11% of women (27 of 251). Men who developed anti-αGAL IgG antibodies were more likely to experience IARs compared to those who remained seronegative. Nine percent of seronegative men and women (34 of 375) reported IARs. The majority of IARs occurred during the first 6 to 12 months of agalsidase beta treatment and decreased over time, in both seroconverted and seronegative patients.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Inmunoglobulina G
/
Enfermedad de Fabry
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Alfa-Galactosidasa
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Isoenzimas
Límite:
Female
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Humans
/
Male
Idioma:
En
Revista:
Mol Genet Metab
Asunto de la revista:
BIOLOGIA MOLECULAR
/
BIOQUIMICA
/
METABOLISMO
Año:
2012
Tipo del documento:
Article
País de afiliación:
Estados Unidos