Description of Business	6 Months Ended
Jun. 30, 2017
Description of Business
Description of Business	Note 1. Description of Business Corporate Information, Status of Operations, and Management Plans Amicus Therapeutics, Inc. (the “Company”) is a global patient-focused biotechnology company engaged in the discovery, development and commercialization of a diverse set of novel treatments for patients living with devastating rare and orphan diseases. The Company’s lead product, migalastat HCl, is a small molecule that can be used as a monotherapy and in combination with enzyme replacement therapy (“ERT”) for Fabry disease. Migalastat was approved for use in the European Union (“EU”) in May 2016 under the brand name Galafold™ as a first-line therapy for long-term treatment of adults and adolescents aged 16 years and older with a confirmed diagnosis of Fabry disease and who have an amenable mutation. Additionally, based on a series of discussions with and written communication received from the U.S. Food and Drug Administration (the “FDA”), the FDA has informed the Company that it may now submit a New Drug Application (“NDA”) for migalastat. An additional Phase 3 study previously requested by the FDA to assess Gastrointestinal (“GI”) symptoms is no longer required before an NDA submission. The Company is preparing the NDA submission under Subpart H, which provides for accelerated approval and plan to submit an NDA to the FDA for migalastat for Fabry disease in the fourth quarter of 2017. Also in the pipeline, SD-101 is a product candidate in late-stage development, as a potential first-to-market therapy for the chronic, rare connective tissue disorder Epidermolysis Bullosa (“EB”). On May 31, 2017, SD-101 received Rare Pediatric Disease designation from the FDA. The FDA grants Rare Pediatric Disease designation for diseases that primarily affect children ages 18 years or younger and fewer than 200,000 persons in the U.S. We are also developing ATB200/AT2221, a novel treatment paradigm for Pompe disease that consists of a unique recombinant enzyme co-administered with AT2221, a pharmacological chaperone. The Company may further leverage its Chaperone-Advanced Replacement Therapy (“CHART™”) platform technologies to develop novel ERT products for other lysosomal storage disorders (“LSDs”). The Company is also investigating preclinical and discovery programs in other rare and devastating diseases including cyclin-dependent kinase-like 5 (“CDKL5”) deficiency. The Company believes that its platform technologies and its product pipeline uniquely position it at the forefront of advanced therapies to treat a range of devastating rare and orphan diseases. On July 12, 2017, the Company entered into an underwriting agreement (“the Underwriting Agreement”) with J.P. Morgan Securities LLC and Goldman Sachs & Co. LLC, as representatives of the several underwriters set forth on Schedule 1 thereto, relating to an underwritten public offering of the Company’s common stock (the “Offering”). Under the terms of the Underwriting Agreement, the Company issued and sold 21,122,449 shares at a price to the public of $12.25 per share, resulting in gross proceeds of $258.8 million, before deducting underwriting discounts and commissions and estimated offering expenses payable by the Company. The Offering closed on July 18, 2017 and the Company received net proceeds from the Offering, after deducting underwriting discounts and commissions and offering expenses payable by the Company of $243.2 million. See “—Note 12 Subsequent Events” for more details. The Company believes that its existing cash and cash equivalents and short-term investments will be sufficient to fund the current operating plan into the second half of 2019.

Note 1. Description of Business

Corporate Information, Status of Operations, and Management Plans

Amicus Therapeutics, Inc. (the “Company”) is a global patient-focused biotechnology company engaged in the discovery, development and commercialization of a diverse set of novel treatments for patients living with devastating rare and orphan diseases. The Company’s lead product, migalastat HCl, is a small molecule that can be used as a monotherapy and in combination with enzyme replacement therapy (“ERT”) for Fabry disease. Migalastat was approved for use in the European Union (“EU”) in May 2016 under the brand name Galafold™ as a first-line therapy for long-term treatment of adults and adolescents aged 16 years and older with a confirmed diagnosis of Fabry disease and who have an amenable mutation. Additionally, based on a series of discussions with and written communication received from the U.S. Food and Drug Administration (the “FDA”), the FDA has informed the Company that it may now submit a New Drug Application (“NDA”) for migalastat. An additional Phase 3 study previously requested by the FDA to assess Gastrointestinal (“GI”) symptoms is no longer required before an NDA submission. The Company is preparing the NDA submission under Subpart H, which provides for accelerated approval and plan to submit an NDA to the FDA for migalastat for Fabry disease in the fourth quarter of 2017.

Also in the pipeline, SD-101 is a product candidate in late-stage development, as a potential first-to-market therapy for the chronic, rare connective tissue disorder Epidermolysis Bullosa (“EB”). On May 31, 2017, SD-101 received Rare Pediatric Disease designation from the FDA. The FDA grants Rare Pediatric Disease designation for diseases that primarily affect children ages 18 years or younger and fewer than 200,000 persons in the U.S.

We are also developing ATB200/AT2221, a novel treatment paradigm for Pompe disease that consists of a unique recombinant enzyme co-administered with AT2221, a pharmacological chaperone. The Company may further leverage its Chaperone-Advanced Replacement Therapy (“CHART™”) platform technologies to develop novel ERT products for other lysosomal storage disorders (“LSDs”). The Company is also investigating preclinical and discovery programs in other rare and devastating diseases including cyclin-dependent kinase-like 5 (“CDKL5”) deficiency. The Company believes that its platform technologies and its product pipeline uniquely position it at the forefront of advanced therapies to treat a range of devastating rare and orphan diseases.

On July 12, 2017, the Company entered into an underwriting agreement (“the Underwriting Agreement”) with J.P. Morgan Securities LLC and Goldman Sachs & Co. LLC, as representatives of the several underwriters set forth on Schedule 1 thereto, relating to an underwritten public offering of the Company’s common stock (the “Offering”). Under the terms of the Underwriting Agreement, the Company issued and sold 21,122,449 shares at a price to the public of $12.25 per share, resulting in gross proceeds of $258.8 million, before deducting underwriting discounts and commissions and estimated offering expenses payable by the Company. The Offering closed on July 18, 2017 and the Company received net proceeds from the Offering, after deducting underwriting discounts and commissions and offering expenses payable by the Company of $243.2 million. See “—Note 12 Subsequent Events” for more details.

The Company believes that its existing cash and cash equivalents and short-term investments will be sufficient to fund the current operating plan into the second half of 2019.