Migalastat Demonstrated Statistically Significant (p=0.013) and Durable Substrate Reductions on 12-Month Pre-Specified Primary Analysis in Fabry Patients with Amenable Mutations Statistically Significant (p<0.0001) Reduction Also Seen in Important Fabry Disease Biomarker, Plasma Lyso-Gb3 Kidney Function Remained Stable Up to 24 Months in Fabry Patients with Amenable Mutations 85% of Patients with Amenable Mutations Completing Month 24 Remain in Ongoing Voluntary Extension Study (Study 041) Conference Call and Webcast Today at 8:00 a.m. ET CRANBURY, N.J., April 29, 2014 (GLOBE NEWSWIRE) -- Amicus Therapeutics (Nasdaq:FOLD), a biopharmaceutical company at the forefront of therapies for rare and orphan diseases, today announced positive 12- and 24-month data from its first Phase 3 study ( Study 011) of the oral small molecule chaperone migalastat HCl ("migalastat") monotherapy in Fabry patients with amenable mutations. Detailed results are available in a slide presentation that will be shared by the Amicus management team on a conference call today at 8:00 a.m. ET. Please visit http://ir.amicustherapeutics.com/events.cfm. Study 011 was designed to measure the reduction of disease substrate (Globotriaosylceramide, or GL-3) following treatment with migalastat. The 24-month study began with a 6-month double-blind, placebo-controlled treatment period, after which all patients were treated with migalastat for a 6-month open-label follow-up period and a subsequent 12-month open-label extension phase. The study also measured clinical outcomes, including renal function, as secondary endpoints. As previously reported, patients on migalastat experienced greater reductions in GL-3 as compared to placebo during the initial 6-month period; however, this difference was not statistically significant under the original study primary endpoint (responder analysis with a 50% reduction threshold at month 6). Following a Type C Meeting with the U.S. Food and Drug Administration (FDA) in the second quarter of 2013, and based on feedback from the agency at that meeting, Amicus revised the Statistical Analysis Plan to pre-specify the primary analysis at month 12 as the mean change in GL-3 in patients with amenable mutations in a GLP-validated human embryonic kidney (HEK) cell-based in vitro assay ("GLP HEK amenable"). Summary of Study 011 12- and 24-Month Data in GLP HEK Amenable Patients
- Subjects who switched from placebo to migalastat after month 6 demonstrated a statistically significant reduction in kidney interstitial capillary GL-3 at month 12 (p=0.013).
- Subjects who remained on migalastat for 12 months demonstrated a durable reduction in kidney interstitial capillary GL-3.
- Reduction in disease substrate was also observed in plasma lyso-Gb3, another important biomarker of disease, in subjects who switched from placebo to migalastat (p<0.0001). Subjects who remained on migalastat demonstrated a durable reduction in lyso-Gb3.
- Kidney function (estimated glomerular filtration rate (eGFR), iohexol mGFR) remained stable over 18-24 months
- Migalastat was generally safe and well-tolerated.
- Of 41 subjects with GLP HEK amenable mutations who completed Study 011, 35 (85%) remain in the voluntary extension study (Study 041).
Raphael Schiffmann, M.D., M.H.Sc., Director of the Institute of Metabolic Disease, Baylor Research Institute, stated, "As an investigator experienced in treating patients with migalastat for up to 8 years in clinical studies, I believe the results from Study 011 show a positive treatment effect of migalastat in Fabry patients with amenable mutations. The reductions in substrate levels in the kidney and in plasma, combined with stabilization of renal function, strongly suggest that migalastat may become an important new oral treatment option for Fabry patients."Migalastat monotherapy is being investigated in two Phase 3 registration studies ( Study 011 and Study 012) and an open-label extension study ( Study 041) in Fabry patients with amenable mutations. Top-line data are anticipated in the third quarter of 2014 from Study 012. The primary analysis in Study 012 will evaluate GFR, a clinical measure of kidney function, over 18-months of treatment with migalastat compared to enzyme replacement therapy (ERT), the current standard of care for Fabry disease. Robert Desnick, M.D., Dean for Genetics and Genomic Medicine, Professor and Chairman Emeritus, Genetics and Genomic Sciences at Icahn School of Medicine at Mount Sinai stated, "Over 40 years of working with patients with Fabry disease, participating in the development of enzyme replacement therapy, and as an early advocate of chaperone therapy, I believe there remains an unmet medical need among these patients. Study 011 has generated an impressive data set demonstrating that patients with amenable mutations respond to migalastat as a chaperone monotherapy." Study 011 Substrate Reduction Data in GLP HEK Amenable Patients Migalastat has demonstrated significant and durable reductions in GL-3 in Study 011 in patients with GLP HEK amenable mutations. Reductions in plasma Lyso-Gb3, another important disease biomarker, were also observed in patients with GLP HEK amenable mutations. GL-3 is the substrate that accumulates in patients with Fabry disease. Reduction in kidney interstitial capillary GL-3 is a surrogate biomarker that was used to support U.S. approval of ERT for Fabry disease.
|Study 011 Stage 1 Data (Baseline to Month 6)||Study 011 Stage 2 Data (Month 6 to Month 12)|
|Migalastat Group1||Placebo Group2||p-Value||Migalastat Group1||Placebo- Migalastat Crossover Group2||p-Value|
|Mean Change in GL-3 (SEM) (Baseline Corrected)3||-0.25 ± 0.10 (n=25)||+0.07 ± 0.13 (n=20)||0.008**||+0.01 ± 0.011 (n=22)||-0.31 ± 0.10 (n=17)||0.013*|
|Plasma Lyso-Gb3 (SEM)||-11.2 ± 4.8 (n=18)||+0.6 ± 2.4 (n=13)||0.0033**||+1.2 ± 1.3 (n=18)||-15.5 ± 6.2 (n=13)||<0.0001**|
|Mean Annualized Change in GFR (ml/min/m2/yr) (SEM) Over 18 to 24 Months (Preliminary Data)|
|Estimated GFR (eGFR) (CKD-EPI) (n=41)||-0.30 (0.66)|
|eGFR (MDRD) (n=41)||+0.79 (1.03)|
|Iohexol (Measured) GFR (n=37)||-1.51 (1.33)|
Conference Call and WebcastAmicus Therapeutics will host a conference call and audio webcast today, April 29, 2014 at 8:00 a.m. ET to discuss positive 12- and 24-month results from Study 011. Interested participants and investors may access the conference call at 8:00 a.m. ET by dialing 877-303-5859 (U.S./Canada) or 678-224-7784 (international). The slide presentation for the conference call is available at http://ir.amicustherapeutics.com/events.cfm. An audio webcast can also be accessed via the Investors section of the Amicus Therapeutics corporate web site at http://ir.amicustherapeutics.com/events.cfm, and will be archived for 30 days. Web participants are encouraged to go to the web site 15 minutes prior to the start of the call to register, download and install any necessary software. A telephonic replay of the call will be available for seven days beginning at 11:00 a.m. ET today. Access numbers for this replay are 855-859-2056 (U.S./Canada) and 404-537-3406 (international); participant code 37179299. About Amicus Therapeutics Amicus Therapeutics (Nasdaq:FOLD) is a biopharmaceutical company at the forefront of therapies for rare and orphan diseases. The Company is developing novel, first-in-class treatments for a broad range of human genetic diseases, with a focus on delivering new benefits to individuals with lysosomal storage diseases. Amicus' lead programs include the small molecule pharmacological chaperones migalastat as a monotherapy and in combination with enzyme replacement therapy (ERT) for Fabry disease; and AT2220 (duvoglustat) in combination with ERT for Pompe disease. 1Patients with GLP HEK amenable mutations who received migalastat from baseline to month 24 2Patients with GLP HEK amenable mutations who received placebo from baseline to month 6 and switched to migalastat after month 6 3Mean change in number of inclusions per capillary as a continuous variable (assessed by histology in kidney biopsies). Scores averaged across all reads at baseline, month 6 and month12. *MMRM analyzing change in placebo group from month 6 to month 12
**ANCOVA model with covariate adjustment for baseline value and treatment-by-baseline interactionForward-Looking Statements This press release contains, and the accompanying conference call will contain, "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 relating to preclinical and clinical development of Amicus' candidate drug products, the timing and reporting of results from preclinical studies and clinical trials evaluating Amicus' candidate drug products and the projected cash position for the Company. Words such as, but not limited to, "look forward to," "believe," "expect," "anticipate," "estimate," "intend," "potential," "plan," "targets," "likely," "may," "will," "would," "should" and "could," and similar expressions or words identify forward-looking statements. Such forward-looking statements are based upon current expectations that involve risks, changes in circumstances, assumptions and uncertainties. The inclusion of forward-looking statements should not be regarded as a representation by Amicus that any of its plans will be achieved. Any or all of the forward-looking statements in this press release may turn out to be wrong. They can be affected by inaccurate assumptions Amicus might make or by known or unknown risks and uncertainties. For example, with respect to statements regarding the goals, progress, timing and outcomes of discussions with regulatory authorities and the potential goals, progress, timing and results of preclinical studies and clinical trials, actual results may differ materially from those set forth in this release due to the risks and uncertainties inherent in the business of Amicus, including, without limitation: the potential that results of clinical or pre-clinical studies indicate that the product candidates are unsafe or ineffective; the potential that it may be difficult to enroll patients in our clinical trials; the potential that regulatory authorities may not grant or may delay approval for our product candidates; the potential that preclinical and clinical studies could be delayed because we identify serious side effects or other safety issues; the potential that we will need additional funding to complete all of our studies and, our dependence on third parties in the conduct of our clinical studies. Further, the results of earlier preclinical studies and/or clinical trials may not be predictive of future results. With respect to statements regarding projections of the Company's cash position, actual results may differ based on market factors and the Company's ability to execute its operational and budget plans. In addition, all forward looking statements are subject to other risks detailed in our Annual Report on Form 10-K for the year ended December 31, 2013. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. All forward-looking statements are qualified in their entirety by this cautionary statement, and Amicus undertakes no obligation to revise or update this news release to reflect events or circumstances after the date hereof. This caution is made under the safe harbor provisions of Section 21E of the Private Securities Litigation Reform Act of 1995.
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