Dose-ranging Study of PRX-102 in Adult Fabry Disease Patients

Reportings of adverse events reported by the patient and from monitoring with clinical laboratory, physical examination and ECG. Results represent the number of AEs that were considered possibly, probably, or definitely related to treatment.

Results are presented as mean percent change from baseline (visit 1) to 12 months +/- standard error.

Estimated glomerular filtration rate (eGFR) was calculated by the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation. Levels of eGFR calculated by the CKD-EPI equation, based on measured serum creatinine on day 1, weeks 4, 8, 12, 26, 38 and 52 are used to determine the annualized slope of eGFR per patient over a 12 months period. The absolute mean change from baseline (visit 1) to 12 months is then derived from the eGFR slope.

Results are presented as mean percent change from baseline (visit 1) to 12 months +/- standard error.

Kidney biopsy was performed at baseline of study PB-102-F01 and following 6 months treatment with PRX-102. Approximately 300 capillaries were scored in each specimen. A quantitative Barisoni Lipid Inclusion Scoring System (BLISS) was used for scoring Gb3 inclusions in kidney peritubular capillary (PTC) biopsy samples.The scoring system was implemented by 3 blinded pathologists/readers.The BLISS scoring methodology consists of counting the number of Gb-3 inclusions per capillary previously annotated.The final score of each biopsy was the average number of inclusions per capillary. A decrease in scoring from baseline to 6 Month is considered an indication for clinical improvement.

Cardiac MRI was performed to estimate the percentage and mass of the myocardial fibrotic area.

Results represent the number of subjects with fibrosis after 1 year of treatment.

Results are presented as mean percent change from baseline (visit 1) to 12 months.

Results are presented as mean percent change from baseline (visit 1) to 12 months.

Cardiac MRI with computer-calculated left ventricular mass index were conducted at baseline, 6 month, and 12 months. Results are presented as mean percent change from baseline (visit 1) to 12 months. LVMI is calculated by dividing the left ventricular mass by body surface area.

PK parameters were derived from the plasma concentration versus time profiles. Results reported represent the averaged values following a single dosing of the study drug.

PK parameters were derived from the plasma concentration versus time profiles. Results reported represent the averaged values following a single dosing of the study drug.

PK parameters were derived from the plasma concentration versus time profiles. Clearance of drug from plasma represents the volume of plasma cleared of the drug per unit time per Kg.

Results reported represent the averaged values following a single dosing of the study drug.

PK parameters were derived from the plasma concentration versus time profiles. Vz is the volume of distribution during the elimination phase. Results reported represent the averaged values following a single dosing of the study drug.

Pharmacokinetic (PK) parameters were derived from the plasma concentration versus time profiles.

Cmax is the maximal plasma concentration of a drug after administration. Results reported represent the averaged values following a single dosing of the study drug.

Results reported represent the number of participants who were tested positive for anti-pegunigalsidase alfa (PRX-102) antibodies, including neutralizing antibodies in patients having a positive IgG antibody response per group, at Visit 1, 2 (Month 1), and then every 2 months during the study, and 2 months after the last infusion.

Pain severity (worst, least, average, and right now) is summarized at baseline, 3-month, 6-month and 12-month of the study. The Short Form Brief Pain Inventory (BPI) is based on a 10-point scale, where 0=no pain and 10=pain as bad as you can imagine. A reduction in pain severity score indicated an improvement. The changes from baseline for individual scores and composite scores (a mean severity score) was assessed. The mean change in score from baseline at the 12-month visit is reflected.

Proteinuria is assessed using spot urine tests at baseline, 3-month, 6-month, 9-month, and 12-month visits. The percent changes of urine creatinine level at the 12-month visit from baseline is reflected.

Proteinuria is assessed using spot urine tests at baseline, 3-month, 6-month, 9-month, and 12-month visits. The percent changes of urine protein/creatinine ratio at the 12-month visit from baseline is reflected.

Proteinuria is assessed using spot urine tests at baseline, 3-month, 6-month, 9-month, and 12-month visits. The percent changes of total urine protein level at the 12-month visit from baseline is reflected.

Qualitative assessments regarding evidence of stroke using brain MRI were summarized at baseline and 12-month visits. Number is subjects with evidence of stoke on the brain MRI at the 12-month visit is reflected.

The Mainz Severity Score Index (MSSI) is useful for monitoring clinical improvement in patients receiving enzyme replacement therapy. The MSSI scoring system is composed of four sections that cover the general, neurological,cardiovascular and renal signs and symptoms of Fabry disease. Each section includes a group of signs and symptoms that are associated with Fabry disease. The minimal score is 0, and the maximum score for the general section is 18. A higher score indicates more severe clinical manifestations of the disease.The MSSI is performed at baseline, 6-month, and 12-month. The overall mean reduction of the total general score at 12-month from baseline is reflected.

A qualitative assessments regarding abdominal pain and diarrhea at baseline, 3-month, 6-month, 9-month, and 12-month visits. The subjects were asked to report the severity of their abdominal pain as no pain, mild, moderate, severe or really severe. The number of subjects who reported no or mild abdominal pain at the 12-month visit are reflected.

A qualitative assessments regarding abdominal pain and diarrhea at baseline, 3-month, 6-month, 9-month, and 12-month visits. The subjects were asked to report their frequency of abdominal pain as never, rarely, monthly, weekly, or daily. The numbers of subjects who reported never or rarely having abdominal pain at the 12-month visit are reflected.

A qualitative assessments regarding abdominal pain and diarrhea at baseline, 3-month, 6-month, 9-month, and 12-month visits. The subjects were asked to report their frequency of diarrhea as never, rarely, monthly, weekly, or daily. The number of subjects who reported never or rarely having diarrhea at the 12-month visit is reflected.