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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Schedule of deferred tax assets and liabilities

(in thousands)		2020				2019
Deferred tax assets:
Net operating losses carry forward		$	33,955			$	31,688
Share-based compensation			1,689				1,422
Research and development/orphan drug credits			12,638				10,872
Intangibles			7,873				5,942
Others			19				13
Less: valuation allowance			(56,174	)			(49,937	)
Deferred tax assets, net		$	-			$	-

Schedule of difference between income tax provision and U.S Federal statutory rates

(in thousands)		December 31, 2020								December 31, 2019
Federal statutory income taxes		$	(4,665	)			(21.0	)%		$	(4,599	)			(21.0	)%
State income taxes			56				0.3	%			1,077				4.9	%
Deferred true-up			(64	)			(0.3	)%			1,810				8.3	%
Research and Development/Orphan Drug Tax Credit			(1,766	)			(8.0	)%			(1,975	)			(9.0	)%
Other			202				0.9	%			145				0.6	%
Change in valuation allowance			6,237				28.1	%			3,542				16.2	%
Provision for income tax		$	-				-			$	-				-

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- References

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- Definition

Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319

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- Definition

Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319

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