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New Analysis of Pombiliti® (cipaglucosidase alfa-atga) + Opfolda® (miglustat) Published in Muscle and Nerve

1. Amicus published positive post-hoc PROPEL study findings for cipa+mig. 2. 77% of patients previously used alglucosidase alfa before switching therapies. 3. Cipa+mig patients showed stability or improvement, contrasting with alglucosidase patients' worsening. 4. Study indicates efficacy in motor and pulmonary functions for cipa+mig. 5. The results validate Pombiliti + Opfolda's clinical profile in Pompe disease.

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Why Bullish?

The strong efficacy results from the PROPEL study support increased investor confidence in FOLD, analogous to past cases where positive trial results boosted biotech stock prices significantly.

How important is it?

The data from the study is crucial for demonstrating the effectiveness of FOLD's products, which can influence market perception and sales projections.

Why Long Term?

Sustained improvements in treatment outcomes can lead to increased market adoption and sales over time, impacting revenues positively in the longer term, similar to how other successful biotech launches have performed.

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June 03, 2025 07:00 ET  | Source: Amicus Therapeutics, Inc. PRINCETON, N.J., June 03, 2025 (GLOBE NEWSWIRE) -- Amicus Therapeutics (Nasdaq: FOLD), today announced the publication of a post-hoc analysis of data from the ERT-experienced cohort of the PROPEL study of cipaglucosidase alfa-atga + miglustat (cipa+mig) in adults with late-onset Pompe disease (LOPD) in Muscle and Nerve. In this new publication, based on a within group effect-size analysis, subjects who switched from alglucosidase alfa to cipa+mig achieved improvements or stability in most of the outcomes measured. In PROPEL, 77% of patients (n=95) received enzyme replacement therapy (ERT) with alglucosidase alfa before study entry, with a median ERT duration of 7.4 years. In this new publication of post-hoc analysis from PROPEL, ERT-experienced patients switched to cipa+mig (n=65), showed improvement (d≥0.2) or stability (−0.295%) completed the PROPEL study. Efficacy endpoints of the study included primary endpoint of change from baseline to week 52 in 6-minute walk distance (6MWD) for comparison of superiority and key secondary endpoint of change from baseline to week 52 in forced vital capacity (FVC). PROPEL did not achieve statistical significance for the primary endpoint of superiority in change from baseline to week 52 in 6MWD in the overall population. After 52 weeks, ERT-experienced patients treated with cipaglucosidase alfa-atga + miglustat (n=61) walked an estimated 17 meters (95% CI, 0.2, 33) farther than the comparator group (n=29). After 52 weeks, ERT-experienced patients treated with cipaglucosidase alfa-atga + miglustat (n=55) showed an estimated treatment difference of 3.5% (95% CI, 1.0, 6.0) in FVC compared with the comparator group (n=29). More details about this post-hoc analysisThis post-hoc analysis assessed the magnitude of within-group treatment effects across measures of motor function, muscle strength, pulmonary function, patient-reported outcomes/QoL measures, and biomarkers. Standardized effect size analysis describes the absolute effect size relative to the variability of the data. It transforms the effect size into a scale with no units of measurement (Cohen’s d). The authors calculated standardized within-group effect sizes (Cohen’s d for within-group comparisons) and corresponding 95% CIs for the change from baseline to week 52 for the primary, secondary, and pharmacodynamic endpoints of the PROPEL study. Standardized within-group effect sizes and corresponding 95% CIs were calculated by dividing the mean change from baseline values and CIs at week 52 by the standard deviation (SD) of the difference scores. Consistent with medical literature, effect sizes were defined as stable (−0.2 < d < 0.2), small (0.2 ≤ d < 0.5), medium (0.5 ≤ d < 0.8), or large (d ≥ 0.8) improvement, or as small (−0.5 < d ≤ −0.2), medium (−0.8 < d ≤ −0.5), or large (d ≤ −0.8) worsening, and were considered statistically significant if the standardized 95% CIs did not cross zero. About Pombiliti + OpfoldaPombiliti® + Opfolda®, is a two-component therapy that consists of cipaglucosidase alfa-atga, a bis-M6P-enriched rhGAA that facilitates high-affinity uptake through the M6P receptor while retaining its capacity for processing into the most active form of the enzyme, and the oral enzyme stabilizer, miglustat, that’s designed to reduce loss of enzyme activity in the blood. U.S. INDICATIONS AND USAGEPOMBILITI in combination with OPFOLDA is indicated for the treatment of adult patients with late-onset Pompe disease (lysosomal acid alpha-glucosidase [GAA] deficiency) weighing ≥40 kg and who are not improving on their current enzyme replacement therapy (ERT). SAFETY INFORMATION HYPERSENSITIVITY REACTIONS INCLUDING ANAPHYLAXIS: Appropriate medical support measures, including cardiopulmonary resuscitation equipment, should be readily available. If a severe hypersensitivity reaction occurs, POMBILITI should be discontinued immediately and appropriate medical treatment should be initiated. INFUSION-ASSOCIATED REACTIONS (IARs): If severe IARs occur, immediately discontinue POMBILITI and initiate appropriate medical treatment. RISK OF ACUTE CARDIORESPIRATORY FAILURE IN SUSCEPTIBLE PATIENTS: Patients susceptible to fluid volume overload, or those with acute underlying respiratory illness or compromised cardiac or respiratory function, may be at risk of serious exacerbation of their cardiac or respiratory status during POMBILITI infusion. See PI for complete Boxed Warning. CONTRAINDICATION: POMBILITI in combination with Opfolda is contraindicated in pregnancy. EMBRYO-FETAL TOXICITY: May cause embryo-fetal harm. Advise females of reproductive potential of the potential risk to a fetus and to use effective contraception during treatment and for at least 60 days after the last dose. Adverse Reactions: Most common adverse reactions ≥ 5% are headache, diarrhea, fatigue, nausea, abdominal pain, and pyrexia. Please see full PRESCRIBING INFORMATION, including BOXED WARNING, for POMBILITI (cipaglucosidase alfa-atga) LINK and full PRESCRIBING INFORMATION for OPFOLDA (miglustat) LINK. About Late-Onset Pompe DiseaseLate-onset Pompe disease is an inherited lysosomal disorder caused by deficiency of the enzyme acid alpha-glucosidase (GAA). Reduced or absent levels of GAA lead to accumulation of glycogen in cells, which is believed to result in the clinical manifestations of Pompe disease. Late-onset Pompe disease can be severe and debilitating with progressive muscle weakness throughout the body that worsens over time, particularly skeletal muscles and muscles that control breathing. About Amicus Therapeutics Amicus Therapeutics (Nasdaq: FOLD) is a global, patient-dedicated biotechnology company focused on discovering, developing and delivering novel high-quality medicines for people living with rare diseases. With extraordinary patient focus, Amicus Therapeutics is committed to advancing and expanding a pipeline of cutting-edge, first- or best-in-class medicines for rare diseases. For more information please visit the company’s website at www.amicusrx.com, and follow on X and LinkedIn. PP-AT-ALL-0001-0525 CONTACTS: Investors: Amicus Therapeutics Andrew Faughnan Vice President, Investor Relations afaughnan@amicusrx.com(609) 662-3809 Media: Amicus Therapeutics Diana Moore Vice President, Corporate Communications dmoore@amicusrx.com(609) 662-5079 FOLD–G

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