Liquidity	6 Months Ended
Jun. 30, 2019
Liquidity [Abstract]
Liquidity	Note 3 – Liquidity As of June 30, 2019, we had $21.7 million of cash and cash equivalents, including $29.1 million of pre-existing cash on Edge’s balance sheets that we obtained as a result of the Merger. Our primary uses of cash are to fund operating expenses, primarily research and development expenditures. Cash used to fund operating expenses is impacted by the timing of when we pay these expenses, as reflected in the change in our outstanding accounts payable and accrued expenses. On July 29, 2019, we entered into a common stock purchase agreement, see “Note 13 – Subsequent Events” for more information on the agreement. The Company evaluated whether there are any conditions and events, considered in the aggregate, that raise substantial doubt about its ability to continue as a going concern within one year beyond the filing of this Quarterly Report on Form 10-Q. Based on such evaluation and the Company’s current plans, which are subject to change, management believes that the Company’s existing cash and cash equivalents as of June 30, 2019 and proceeds expected to become available through government funding programs will be sufficient to satisfy its operating cash needs for at least one year after the filing of this Quarterly Report on Form 10-Q. We plan to continue to fund our operations and capital funding needs through equity and/or debt financings. We may also enter into government funding programs and consider selectively partnering for clinical development and commercialization. The sale of additional equity would result in additional dilution to our stockholders. Incurring debt financing would result in debt service obligations, and the instruments governing such debt could provide for operating and financing covenants that would restrict our operations. If we are unable to raise additional capital in sufficient amounts or on acceptable terms, we may be required to delay, limit, reduce, or terminate our product development or future commercialization efforts or grant rights to develop and market immunotherapies that we would otherwise prefer to develop and market ourselves. Any of these actions could harm our business, results of operations and prospects.

Note 3 – Liquidity

As of June 30, 2019, we had $21.7 million of cash and cash equivalents, including $29.1 million of pre-existing cash on Edge’s balance sheets that we obtained as a result of the Merger. Our primary uses of cash are to fund operating expenses, primarily research and development expenditures. Cash used to fund operating expenses is impacted by the timing of when we pay these expenses, as reflected in the change in our outstanding accounts payable and accrued expenses.

On July 29, 2019, we entered into a common stock purchase agreement, see “Note 13 – Subsequent Events” for more information on the agreement.

The Company evaluated whether there are any conditions and events, considered in the aggregate, that raise substantial doubt about its ability to continue as a going concern within one year beyond the filing of this Quarterly Report on Form 10-Q. Based on such evaluation and the Company’s current plans, which are subject to change, management believes that the Company’s existing cash and cash equivalents as of June 30, 2019 and proceeds expected to become available through government funding programs will be sufficient to satisfy its operating cash needs for at least one year after the filing of this Quarterly Report on Form 10-Q.

We plan to continue to fund our operations and capital funding needs through equity and/or debt financings. We may also enter into government funding programs and consider selectively partnering for clinical development and commercialization. The sale of additional equity would result in additional dilution to our stockholders. Incurring debt financing would result in debt service obligations, and the instruments governing such debt could provide for operating and financing covenants that would restrict our operations. If we are unable to raise additional capital in sufficient amounts or on acceptable terms, we may be required to delay, limit, reduce, or terminate our product development or future commercialization efforts or grant rights to develop and market immunotherapies that we would otherwise prefer to develop and market ourselves. Any of these actions could harm our business, results of operations and prospects.