The international PRoposing Early Disease Indicators for Clinical Tracking in Fabry Disease (PREDICT-FD) modified Delphi initiative (funded by Shire, now part of Takeda) aimed to determine when to initiate or stop Fabry disease-specific treatment (enzyme replacement therapy or chaperone therapy) in different patient groups in a variety of scenarios. According to expert consensus, Fabry disease-specific treatment should be initiated in5:
- All male patients aged ≥16 years with classical Fabry disease
- All male patients of any age with classical Fabry disease with indicators of early organ damage, irrespective of whether these symptoms meet the European Fabry Working Group (EFWG) recommendations for treatment initiation*
- All female patients with classical Fabry disease with symptoms meeting the EFWG recommendations for treatment initiation*
- All male and female patients with late-onset Fabry disease with symptoms meeting the EFWG recommendations for treatment initiation*
- Male or female patients with Fabry disease with evidence of damage to a single organ system, regardless of whether that organ system was being treated by a non-Fabry disease-specific therapy (e.g., cardiac pacemaker, kidney transplant or renal replacement therapy, etc.); Fabry disease-specific therapy should not be stopped in these patients, even if a non-Fabry disease-specific therapy becomes necessary
- Male or female patients with Fabry disease receiving multiple separate therapies for damage to multiple organ systems (e.g., combination of cardiac pacemaker, kidney transplant or renal replacement therapy, etc.); Fabry disease-specific therapy should not be stopped in these patients, even if a non-Fabry disease-specific therapy is required.
The panel agreed that Fabry disease-specific therapy should not be initiated in asymptomatic female patients with late-onset Fabry disease.5
*Consensus criteria for the initiation and withdrawal of enzyme replacement therapy were published in 2015 by the EFWG. The recommendations generally applied to males and females with classical Fabry disease and males with late-onset Fabry disease, and indicated that treatment should be initiated when clinical signs of central nervous system, heart or kidney involvement, gastrointestinal symptoms or pain first occur. It was also recommended that males aged ≤16 years with classical Fabry disease with no signs or symptoms of organ involvement and females with late-onset Fabry disease exhibiting early clinical disease signs could be considered for treatment initiation. The initiation and continuation of Fabry disease-specific treatment was suggested to be considered on an individual basis, and recommendations were made to not initiate treatment in some scenarios (e.g. patients with end-stage renal disease with no option of renal transplant, those with advanced heart failure or those with severe cognitive decline).5,6