Subsequent Events	6 Months Ended
Jun. 30, 2017
Subsequent Events
Subsequent Events	Note 12. Subsequent Events On July 12, 2017, the Company entered into 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 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. The Offering was made pursuant to the Company’s registration statement on Form S-3 (Registration No. 333-211005) filed with the U.S. Securities and Exchange Commission (the “ Commission “) on April 29, 2016, which became effective automatically upon the filing thereof. A preliminary prospectus supplement relating to the Offering was filed with the Commission on July 12, 2017, and a final prospectus supplement relating to the Offering was filed with the Commission on July 13, 2017. The Company expects to use the net proceeds of the Offering for investment in the U.S. and international commercial infrastructure for migalastat HCl, investment in manufacturing capabilities for ATB200, the continued clinical development of its product candidates, research and development expenditures, clinical and pre-clinical trial expenditures, commercialization expenditures and for other general corporate purposes, which may include working capital, capital expenditures, the funding of in-licensing agreements for product candidates, additional technologies or other forms of intellectual property, the acquisition of assets or businesses that are complementary to the Company’s existing business and general and administrative expenses.

Note 12. Subsequent Events

On July 12, 2017, the Company entered into 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 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.

The Offering was made pursuant to the Company’s registration statement on Form S-3 (Registration No. 333-211005) filed with the U.S. Securities and Exchange Commission (the “ Commission “) on April 29, 2016, which became effective automatically upon the filing thereof. A preliminary prospectus supplement relating to the Offering was filed with the Commission on July 12, 2017, and a final prospectus supplement relating to the Offering was filed with the Commission on July 13, 2017.

The Company expects to use the net proceeds of the Offering for investment in the U.S. and international commercial infrastructure for migalastat HCl, investment in manufacturing capabilities for ATB200, the continued clinical development of its product candidates, research and development expenditures, clinical and pre-clinical trial expenditures, commercialization expenditures and for other general corporate purposes, which may include working capital, capital expenditures, the funding of in-licensing agreements for product candidates, additional technologies or other forms of intellectual property, the acquisition of assets or businesses that are complementary to the Company’s existing business and general and administrative expenses.