Long-term follow-up of renal function in patients treated with migalastat for Fabry disease

• Published in: Molecular genetics and metabolism reports 2021-09, Vol.28, p.100786-100786, Article 100786
• Main Authors: Bichet, Daniel G., Torra, Roser, Wallace, Eric, Hughes, Derralynn, Giugliani, Roberto, Skuban, Nina, Krusinska, Eva, Feldt-Rasmussen, Ulla, Schiffmann, Raphael, Nicholls, Kathy
• Format: Article
• Language: English
• Subjects: Chaperone; Classic phenotype; Efficacy; Fabry disease; Migalastat; Renal function; Research Paper
• ISSN: 2214-4269; 2214-4269
• DOI: 10.1016/j.ymgmr.2021.100786

The effect of migalastat on long-term renal outcomes in enzyme replacement therapy (ERT)–naive and ERT-experienced patients with Fabry disease is not well defined. An integrated posthoc analysis of the phase 3 clinical trials and open-label extension studies was conducted to evaluate long-term changes in renal function in patients with Fabry disease and amenable GLA variants who were treated with migalastat for ≥2 years during these studies. The analysis included ERT-naive (n = 36 [23 females]; mean age 45 years; mean baseline estimated glomerular filtration rate (eGFR), 91.4 mL/min/mL/1.73 m2) and ERT-experienced (n = 42 [24 females]; mean age, 50 years; mean baseline eGFR, 89.2 mL/min/1.73m2) patients with amenable variants who received migalastat 123 mg every other day for ≥2 years. The annualized rate of change from baseline to last observation in estimated glomerular filtration rate using the Chronic Kidney Disease Epidemiology Collaboration equation (eGFRCKD-EPI) was calculated by both simple linear regression and a random coefficient model. In ERT-naive patients, mean annualized rates of change from baseline in eGFRCKD-EPI were − 1.6 mL/min/1.73 m2 overall and − 1.8 mL/min/1.73 m2 and − 1.4 mL/min/1.73 m2 in male and female patients, respectively, as estimated by simple linear regression. In ERT-experienced patients, mean annualized rates of change from baseline in eGFRCKD-EPI were − 1.6 mL/min/1.73 m2 overall and − 2.6 mL/min/1.73 m2 and − 0.8 mL/min/1.73 m2 in male and female patients, respectively. Mean annualized rate of change in eGFRCKD-EPI in ERT-naive patients with the classic phenotype (defined by white blood cell alpha galactosidase A [α-Gal A] activity of