0001615219-23-000038 | 10-Q | XBRL Viewer | Salarius Pharmaceuticals INC

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating activities
Net loss	$ (5,340,773)	$ (6,109,225)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,669	4,797
Equity-based compensation expense	203,345	313,903
In-process research and development technology	0	1,987,900
Changes in operating assets and liabilities:
Grants receivable	1,480,490	0
Prepaid expenses and other current assets	280,728	300,342
Accounts payable	627,576	150,302
Accrued expenses and other current liabilities	(422,470)	(168,845)
Net cash used in operating activities	(3,169,435)	(3,520,826)
Investing activities
Purchase in-process research and development technology	0	(1,500,000)
Net cash used in investing activities	0	(1,500,000)
Financing activities
Proceeds from issuance of equity securities, net	336,682	0
Net cash provided by financing activities	336,682	0
Net decrease in cash, cash equivalents and restricted cash	(2,832,753)	(5,020,826)
Cash, cash equivalents and restricted cash at beginning of period	12,106,435	29,214,380
Cash, cash equivalents and restricted cash at end of period	9,273,682	24,193,554
Non-cash investing and financing activities:
Common stock issued for in-process research and development technology	0	487,900
Accrued issuance costs for public offering	$ 25,000	$ 0

PREPAID EXPENSES AND OTHER CURRENT ASSETS - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid clinical trial expenses	$ 11,185	$ 11,185
Prepaid insurance	368,931	624,612
Other prepaid and current assets	156,509	167,576
Total prepaid expenses and other current assets	$ 536,625	$ 803,373

COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Millions		1 Months Ended
	Jul. 01, 2016	Jun. 30, 2016	Mar. 31, 2023	Dec. 31, 2011
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Award amount	$ 16.1	$ 18.7
Award term		3 years
Continued payments, percent of net sales			1.00%
University of Utah Research Foundation
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Ownership percentage by noncontrolling owner				2.00%

EQUITY-BASED COMPENSATION - Schedule of Fair Value Assumptions (Details)	3 Months Ended
	Mar. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate, minimum	1.62%
Risk-free interest rate, maximum	1.70%
Volatility, minimum	125.19%
Volatility, maximum	126.42%
Expected dividend yield	0.00%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life (years)	5 years
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life (years)	6 years

ORGANIZATION AND OPERATIONS (Details) - Subsequent Event - Sales Agreement - Common Stock $ in Millions	1 Months Ended
	May 11, 2023 USD ($) shares
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of shares issued (in shares) \| shares	527,672
Proceeds from sale of stock \| $	$ 1.3

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 9,273,682	$ 12,106,435
Grants receivable from CPRIT	130,000	1,610,490
Prepaid expenses and other current assets	536,625	803,373
Total current assets	9,940,307	14,520,298
Other assets	114,852	130,501
Total assets	10,055,159	14,650,799
Current liabilities:
Accounts payable	3,510,905	2,858,330
Accrued expenses and other current liabilities	985,393	1,407,861
Total liabilities	4,496,298	4,266,191
Commitments and contingencies (Note 5)
Stockholders' equity:
Preferred stock, $0.0001 par value; 10,000,000 shares authorized; 0 issued and outstanding	0	0
Common stock, $0.0001 par value; 100,000,000 shares authorized; 2,468,297 and 2,255,899 shares issued and outstanding at March 31, 2023 and December 31, 2022, respectively	246	225
Additional paid-in capital	74,704,536	74,189,531
Accumulated deficit	(69,145,921)	(63,805,148)
Total stockholders' equity	5,558,861	10,384,608
Total liabilities and stockholders' equity	$ 10,055,159	$ 14,650,799

SUBSEQUENT EVENTS (Details) - Subsequent Event - Sales Agreement - Common Stock $ in Millions	1 Months Ended
	May 11, 2023 USD ($) shares
Subsequent Event [Line Items]
Number of shares issued (in shares) \| shares	527,672
Proceeds from sale of stock \| $	$ 1.3

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2021		1,809,593
Beginning balance at Dec. 31, 2021	$ 38,722,985	$ 181	$ 70,919,996	$ (32,197,192)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued for in-process research and development technology (in shares)		40,000
Common stock issued for in-process research and development technology	487,900	$ 4	487,896
Equity-based compensation expense (in shares)		18,215
Equity-based compensation expense	313,903	$ 2	313,901
Net loss	(6,109,225)			(6,109,225)
Ending balance (in shares) at Mar. 31, 2022		1,867,808
Ending balance at Mar. 31, 2022	33,415,563	$ 187	71,721,793	(38,306,417)
Beginning balance (in shares) at Dec. 31, 2022		2,255,899
Beginning balance at Dec. 31, 2022	10,384,608	$ 225	74,189,531	(63,805,148)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of equity securities, net (in shares)		142,499
Issuance of equity securities, net	311,681	$ 14	311,667
Equity-based compensation expense (in shares)		69,899
Equity-based compensation expense	203,345	$ 7	203,338
Net loss	(5,340,773)			(5,340,773)
Ending balance (in shares) at Mar. 31, 2023		2,468,297
Ending balance at Mar. 31, 2023	$ 5,558,861	$ 246	$ 74,704,536	$ (69,145,921)

PREPAID EXPENSES AND OTHER CURRENT ASSETS

3 Months Ended

Mar. 31, 2023

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

PREPAID EXPENSES AND OTHER CURRENT ASSETS

Prepaid expenses and other current assets at March 31, 2023 and December 31, 2022 consisted of the following:


	March 31, 2023		December 31, 2022
Prepaid clinical trial expenses	$	11,185	$	11,185
Prepaid insurance	368,931		624,612

Other prepaid and current assets	156,509		167,576
Total prepaid expenses and other current assets	$	536,625	$	803,373

Prepaid insurance is mainly comprised of prepaid directors' and officers' insurance.

COVER PAGE - shares	3 Months Ended
COVER PAGE - shares	Mar. 31, 2023	May 05, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2023
Document Transition Report	false
Entity File Number	001-36812
Entity Registrant Name	SALARIUS PHARMACEUTICALS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	46-5087339
Entity Address, Address Line One	2450 Holcombe Blvd
Entity Address, Address Line Two	Suite X
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77021
City Area Code	832
Local Phone Number	804-9144
Title of 12(b) Security	Common Stock, $0.0001 par value
Trading Symbol	SLRX
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		2,491,428
Entity Central Index Key	0001615219
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Amendment Flag	false

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)	3 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States ("GAAP"). Any reference in these notes to applicable guidance is meant to refer to the authoritative GAAP as found in the Accounting Standard Codification ("ASC") and Accounting Standards Update ("ASU") of the Financial Accounting Standards Board ("FASB"). On October 14, 2022, the Company filed a Certificate of Amendment to the Company’s restated certificate of incorporation with the Secretary of State of the State of Delaware to effect a 1-for-25 reverse stock split of the Company’s issued and outstanding shares of common stock, par value $0.0001 per share (the “Reverse Stock Split”), which became effective on October 14, 2022. All historical share and per share amounts reflected throughout this report have been adjusted to reflect the Reverse Stock Split.
Principles of Consolidation	Principles of Consolidation The condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America as defined by the FASB ASC requires management to make estimates and assumptions that affect certain reported amounts and disclosures. Accordingly, actual results could differ from those estimates.
Cash and Cash Equivalents	Cash and Cash EquivalentsSalarius considers all highly liquid investments with original maturities of three months or less to be cash equivalents.
Impairment of Long-Lived Assets	Impairment of Long-Lived AssetsLong-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that their carrying value may not be recoverable. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset.
Financial Instruments and Credit Risks	Financial Instruments and Credit Risks Financial instruments that potentially subject the Company to credit risk include cash and cash equivalents and restricted cash. Cash is deposited in demand accounts in federally insured domestic institutions to minimize risk. Insurance is provided through the Federal Deposit Insurance Corporation. Although the balances in these accounts exceed the federally insured limit from time to time, the Company has not incurred losses related to these deposits.
Warrants	Warrants The Company determines whether warrants should be classified as a liability or equity. For warrants classified as liabilities, the Company estimates the fair value of the warrants at each reporting period using Level 3 inputs with changes in fair value recorded in the Condensed Consolidated Statement of Operations within change in fair value of warrant liability. The estimates in valuation models are based, in part, on subjective assumptions, including but not limited to stock price volatility, the expected life of the warrants, the risk-free interest rate and the fair value of the common stock underlying the warrants, and could differ materially in the future. The Company will continue to adjust the fair value of the warrant liability at the end of each reporting period for changes in fair value from the prior period until the earlier of the exercise or expiration of the applicable warrant. For warrants classified as equity contracts, the Company allocates the transaction proceeds to the warrants and any other free-standing instruments issued in the transaction based on an allowable allocation method.
Grants Receivable and Revenue	Grants Receivable and Revenue Salarius’ source of revenue has been from a grant received from CPRIT. Grant revenue is recognized when qualifying costs are incurred and there is reasonable assurance that conditions of the grant have been met. Cash received from grants in advance of incurring qualifying costs is recorded as deferred revenue and recognized as revenue when qualifying costs are incurred.
Research and Development Costs	Research and Development Costs Research and development costs consist of expenses incurred in performing research and development activities, including pre-clinical studies and clinical trials. Research and development costs include salaries and personnel-related costs, consulting fees, fees paid for contract research services, the costs of laboratory equipment and facilities, license fees and other external costs. Research and development costs are expensed when incurred. Costs incurred in obtaining in-process research and development ("IPRD") that has no alternative future use are charged to research and development expense as acquired, and presented as investing activity cash outflows on the Statement of Cash Flow.
Equity-Based Compensation	Equity-Based Compensation Salarius measures equity-based compensation based on the grant date fair value of the awards and recognizes the associated expense in the financial statements over the requisite service period of the award, which is generally the vesting period. The Company uses the Black-Scholes option valuation model to estimate the fair value of stock options granted to employees and directors. Assumptions utilized in these models including expected volatility calculated based on implied volatility from traded stocks of peer companies, dividend yield and risk-free interest rate. Additionally, forfeitures are accounted for in compensation cost as they occur. Restricted stock and restricted stock units granted to employees and directors are measured at fair value based upon the closing price of the Company's common stock on the grant date.
Loss Per Share	Loss Per Share Basic net loss per share is calculated by dividing the net loss applicable to common stockholders by the weighted average number of shares of common stock outstanding during the period. Since the Company was in a loss position for all periods presented, diluted net loss per share is the same as basic net loss per share for all periods, as the inclusion of all potential common shares outstanding is anti-dilutive.
Income Taxes	Income Taxes Income taxes are recorded in accordance with FASB ASC Topic 740, Income Taxes ("ASC 740"), which provides for deferred taxes using an asset and liability approach. Under this method, deferred tax assets and liabilities are determined based on the difference between the financial reporting and the tax reporting basis of assets and liabilities and are measured using the enacted tax rates and laws that are expected to be in effect when the differences are expected to reverse. The Company provides a valuation allowance against net deferred tax assets unless, based upon the available evidence, it is more likely than not that the deferred tax assets will be realized. The Company has evaluated available evidence and concluded that the Company may not realize the benefit of its deferred tax assets; therefore, a valuation allowance has been established for the full amount of the deferred tax assets. The Company accounts for uncertain tax positions in accordance with the provisions of ASC 740. When uncertain tax positions exist, the Company recognizes the tax benefit of tax positions to the extent that the benefit will more likely than not be realized. The determination as to whether the tax benefit will more likely than not be realized is based upon the technical merits of the tax position as well as consideration of the available facts and circumstances. As of March 31, 2023 and December 31, 2022, the Company did not have any significant uncertain tax positions and no interest or penalties have been charged. The Company's practice is to recognize interest and/or penalties related to income tax matters in income tax expense. The Company is subject to routine audits by taxing jurisdictions.
Recently Adopted Accounting Standard	Recently Adopted Accounting Standard In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments — Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which requires the measurement of all expected credit losses for financial assets including trade receivables held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Subsequent to the issuance of ASU 2016-13, the FASB issued ASU 2018-19, Codification Improvements to Topic 326, Financial Instruments - Credit Losses. This ASU does not change the core principle of the guidance in ASU 2016-13, instead these amendments are intended to clarify and improve operability of certain topics included within the credit losses guidance. The FASB also subsequently issued ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments—Credit Losses, Derivatives and Hedging (Topic 815), and Financial Instruments (Topic 825), which did not change the core principle of the guidance in ASU 2016-13 but clarified that expected recoveries of amounts previously written off and expected to be written off should be included in the valuation account and should not exceed amounts previously written off and expected to be written off. The guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2019 for public business entities, excluding smaller reporting companies. Early adoption is permitted. As a smaller reporting company, the guidance was effective for the Company on January 1, 2023. The adoption of this standard did not have a material impact to this Company's consolidated financial statements.
Fair Value of Financial Instruments	Certain assets and liabilities are carried at fair value under GAAP. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. A fair value hierarchy based on three levels of inputs, of which the first two are considered observable and the last is considered unobservable, are used to measure fair value: Level 1 - Unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 - Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 - Significant unobservable inputs including Salarius’ own assumptions in determining fair value. The Company believes the recorded values of its financial instruments, including cash and cash equivalents, accounts payable and note payable approximate their fair values due to the short-term nature of these instruments.

PREPAID EXPENSES AND OTHER CURRENT ASSETS (Tables)

3 Months Ended

Mar. 31, 2023

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets at March 31, 2023 and December 31, 2022 consisted of the following:


	March 31, 2023		December 31, 2022
Prepaid clinical trial expenses	$	11,185	$	11,185
Prepaid insurance	368,931		624,612

Other prepaid and current assets	156,509		167,576
Total prepaid expenses and other current assets	$	536,625	$	803,373

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollar per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollar per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	2,468,297	2,255,899
Common stock, shares outstanding (in shares)	2,468,297	2,255,899

FAIR VALUE OF FINANCIAL INSTRUMENTS	3 Months Ended
FAIR VALUE OF FINANCIAL INSTRUMENTS	Mar. 31, 2023
Fair Value Disclosures [Abstract]
FAIR VALUE OF FINANCIAL INSTRUMENTS	FAIR VALUE OF FINANCIAL INSTRUMENTS Certain assets and liabilities are carried at fair value under GAAP. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. A fair value hierarchy based on three levels of inputs, of which the first two are considered observable and the last is considered unobservable, are used to measure fair value: Level 1 - Unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 - Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 - Significant unobservable inputs including Salarius’ own assumptions in determining fair value. The Company believes the recorded values of its financial instruments, including cash and cash equivalents, accounts payable and note payable approximate their fair values due to the short-term nature of these instruments.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

SUBSEQUENT EVENTS	3 Months Ended
SUBSEQUENT EVENTS	Mar. 31, 2023
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTSOn May 5, 2023, the Company was notified by FDA that they have completed the review of the Company's submission and have concluded that the clinical trial may be resumed. See Recent Developments for further discussion. From April 4, 2023 to May 11, 2023, the Company sold 527,672 ATM shares of its common shares with gross proceeds of approximately $1.3 million under the Sales Agreement.

ORGANIZATION AND OPERATIONS	3 Months Ended
ORGANIZATION AND OPERATIONS	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
ORGANIZATION AND OPERATIONS	ORGANIZATION AND OPERATIONS Nature of Business Salarius Pharmaceuticals, Inc. (“Salarius” or the “Company”), together with its subsidiaries, Salarius Pharmaceuticals, LLC, Flex Innovation Group LLC, and TK Pharma, Inc., is a clinical-stage biopharmaceutical company focused on developing effective treatments for cancers with high, unmet medical need. Specifically, the Company is developing treatments for cancers caused by dysregulated gene expression, i.e., genes that are incorrectly turned on or off. The Company is developing two classes of drugs that address gene dysregulation: targeted protein inhibitors and targeted protein degraders. The Company's technologies have the potential to work in both liquid and solid tumors. The Company's current pipeline consists of two small molecule drugs: 1) SP-3164, a targeted protein degrader, and 2) seclidemstat (SP-2577), a targeted protein inhibitor. The Company is located in Houston, Texas. Going Concern Salarius has no products approved for commercial sale, has not generated any revenue from product sales to date and has suffered recurring losses from operations since its inception. The lack of revenue from product sales to date and recurring losses from operations since its inception raise substantial doubt as to the Company's ability to continue as a going concern. The accompanying financial statements are prepared using accounting principles generally accepted in the United States applicable to a going concern, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business. The financial statements do not include any adjustments relating to the recoverability and classification of recorded asset amounts and classification of liabilities should the Company be unable to continue as a going concern. Salarius will require substantial additional capital to fund its research and development expenses related to its pipeline including SP-3164 and seclidemstat. Based on Salarius’ expected cash requirements, Salarius believes that there is substantial doubt that its existing cash and cash equivalents, will be sufficient to fund its operations through one year from the financial statements' issuance date. The Company intends to obtain additional capital through the sale of equity securities in one or more offerings or through issuances of debt instruments, and may also consider new collaborations or selectively partnering its technology. However, the Company cannot provide any assurance that it will be successful in accomplishing any of its plans. Recent Developments Partial Clinical Hold Lifted On October 19, 2022, the Company voluntarily paused new patient enrollment in its Phase 1/2 trial of seclidemstat as a treatment for Ewing sarcoma and FET-rearranged sarcomas per protocol design. The pause in new patient enrollment was due to a metastatic FET-rearranged sarcoma patient death that was classified as a suspected unexpected serious adverse reaction (SUSAR). Upon review of the SUSAR and available information by the Company’s independent Safety Review Committee for the clinical trial, patients currently receiving seclidemstat treatment may continue treatment after consulting with their physician. During a conference call with the U.S. Food and Drug Administration (FDA) on November 1, 2022, the FDA informed the Company that the agency agreed with the voluntary enrollment pause and, as an administrative action, the FDA provided verbal notification that the Ewing sarcoma and FET-rearranged sarcoma trial was on partial clinical hold. While on partial clinical hold, FDA informed the Company that the pause in patient enrollment shall remain in place and patients currently receiving seclidemstat treatment may continue treatment after consulting with their physician. FDA’s clinical hold procedures provide the Company with an administrative process to work with the FDA to analyze the available data, adjust clinical protocols, and make other changes that may be needed in order to restart patient enrollment. The Company adhered to this administrative process and submitted its findings during early April, 2023. On May 5, 2023, the Company was notified by FDA that they have completed the review of our submission and have concluded that the clinical trial may be resumed. Common Stock Issued Under At the Market Offering Agreement On February 5, 2021, the Company entered into an At the Market Offering Agreement (the “Sales Agreement”) with Ladenburg Thalmann & Co. Inc. (“Ladenburg”). Under the Sales Agreement the Company was able to issue and sell, from time to time, shares of its common stock (the “ATM Shares”) with Ladenburg acting as an agent for sales. Sales of the ATM Shares may be made by any method permitted by law deemed to be an “at the market offering” as defined in Rule 415(a)(4) of the Securities Act of 1933, as amended, including, without limitation, sales made directly on or through the Nasdaq Capital Market. From April 4, 2023 to May 11, 2023, the Company sold 527,672 ATM shares of its common shares with gross proceeds of approximately $1.3 million under the Sales Agreement.

EQUITY-BASED COMPENSATION

3 Months Ended

Mar. 31, 2023

Share-Based Payment Arrangement [Abstract]

EQUITY-BASED COMPENSATION

Equity Incentive Plans

The Company has granted options to employees, directors, and consultants under the 2015 Equity Incentive Plan (the "2015 Plan"). The 2015 Plan provides for the grant of incentive stock options ("ISOs"), nonstatutory stock options, restricted stock awards, restricted stock units, stock appreciation rights, performance-based stock awards and other stock-based awards. Additionally, the 2015 Plan provides for the grant of performance-based cash awards. ISOs may be granted only to the Company's employees. All other awards may be granted to the Company's employees, including officers, and to non-employee directors and consultants. As of March 31, 2023, there were approximately 55,365 shares remaining available for the grant of option awards under the 2015 Plan.

During the three months ended March 31, 2023, the Company awarded 12,220 restricted stock units to its employees and 36,640 restricted stock awards to its officers and directors, pursuant to the plan described above. Both the restricted stock units and restricted stock awards are valued at the closing price $1.57 of the Company's common stock on the grant date, and generally vest over one to four years. Total fair value of the restricted stock awards and restricted stock units awarded during the three months periods ended March 31, 2023 is $76,679.

During the three-month periods ended March 31, 2023 and 2022, the Company awarded 0 and 50,160 stock options, to its employees and directors, pursuant to the plan described above. Stock options generally vest over one to four years and have a contractual term of ten years. Stock options are valued using the Black-Scholes option pricing model and compensation cost is recognized based on the resulting value over the service period. Expected volatilities utilized in the model are based on implied volatilities from traded stocks of peer companies. Similarly, the dividend yield is based on historical experience and the estimate of future dividend yields. The risk-free interest rate is derived from the U.S. Treasury yield curve in effect at the time of grant. The expected term of the options is based on the average period the stock options are expected to remain outstanding. The fair value of the option grants awarded during the three months periods ended March 31, 2022 was $0.5 million, which has been estimated with the following assumptions on the grant date.


			Three Months Ended March 31
			2022
Risk-free interest rate			1.62%-1.70%
Volatility			125.19% 126.42%
Expected life (years)			5.00-6.00
Expected dividend yield			0%

The following table summarizes stock option activity for employees and non-employees for the three months ended March 31, 2023 and 2022:


	Shares	Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value
Outstanding at December 31, 2021	63,919	$	68.75	8.50	$	—
Granted	50,160	$	12.00
Exercised	—
Forfeited	—
Expired	—
Outstanding at March 31, 2022	114,079	$	43.75	8.94	$	—
Exercisable at March 31, 2022	30,756	$	111.50	8.01	$	—

Outstanding at December 31, 2022	107,128	$	23.67	8.29	$	—
Granted	—
Exercised	—
Forfeited	—
Expired	—
Outstanding at March 31, 2023	107,128	$	23.67	8.04	$	—
Exercisable at March 31, 2023	59,870	$	28.30	7.83	$	—

As of both March 31, 2023 and 2022, there was approximately $0.7 and $1.0 million of total unrecognized compensation cost related to unvested stock options,. Total unrecognized compensation cost will be adjusted for future changes in employee and non-employee forfeitures, if any. The Company expects to recognize that cost over a remaining weighted-average period of 1.9 years.

EQUITY-BASED COMPENSATION - Schedule of Stock Option Activity (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Shares
Outstanding, beginning balance (in shares)	107,128	63,919	63,919
Granted (in shares)	0	50,160
Exercised (in shares)	0	0
Forfeited (in shares)	0	0
Expired (in shares)	0	0
Outstanding, ending balance (in shares)	107,128	114,079	107,128	63,919
Exercisable (in shares)	59,870	30,756
Weighted-Average Exercise Price
Weighted-average exercise price, beginning balance (in dollar per share)	$ 23.67	$ 68.75	$ 68.75
Granted, weighted-average exercise price (in dollar per share)		12.00
Exercised, weighted-average exercise price (in usd per share)
Forfeited, weighted-average exercise price (in dollar per share)
Expired, weighted-average exercise price (in usd per share)
Weighted-average exercise price, ending balance (in dollar per share)	23.67	43.75	$ 23.67	$ 68.75
Exercisable, weighted-average exercise price (in dollar per share)	$ 28.30	$ 111.50
Weighted-Average Remaining Contractual Term (in years) and Aggregate Intrinsic Value
Outstanding, weighted-average remaining contractual term	8 years 14 days	8 years 11 months 8 days	8 years 3 months 14 days	8 years 6 months
Exercisable, weighted-average remaining contractual term	7 years 9 months 29 days	8 years 3 days
Outstanding, aggregate intrinsic value	$ 0	$ 0	$ 0	$ 0
Exercisable, aggregate intrinsic value	$ 0	$ 0

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income Statement [Abstract]
Revenue from contract with customer, product and service	Grant	Grant
Grant revenue	$ 0	$ 0
Operating expenses:
Research and development	3,725,588	4,439,475
General and administrative	1,695,075	1,677,754
Total operating expenses	5,420,663	6,117,229
Loss before other income (expense)	(5,420,663)	(6,117,229)
Interest income, net and other	79,890	8,004
Loss from continuing operations	(5,340,773)	(6,109,225)
Net loss	$ (5,340,773)	$ (6,109,225)
Loss per common share, basic ( in dollar per share)	$ (2.23)	$ (3.30)
Loss per common share, diluted ( in dollar per share)	$ (2.23)	$ (3.30)
Weighted average number of shares outstanding, basic (in shares)	2,391,964	1,850,208
Weighted average number of shares outstanding, diluted (in shares)	2,391,964	1,850,208

STOCKHOLDERS' EQUITY (Details) - USD ($)		3 Months Ended
STOCKHOLDERS' EQUITY (Details) - USD ($)	Jan. 12, 2022	Mar. 31, 2023	Mar. 31, 2022	Apr. 30, 2022	Dec. 31, 2020
Class of Stock [Line Items]
Shares issued, value	$ 500,000	$ 311,681
Common stock issued for in-process research and development technology			$ 487,900
Warrants and rights outstanding, term				5 years 6 months	5 years
Exercise price (in dollar per share)					$ 29.55
Warrants and rights exercisable, term				6 months
Warrants outstanding (in shares)		597,512	317,329
Maximum
Class of Stock [Line Items]
Exercise price (in dollar per share)					$ 28.75
Common Stock
Class of Stock [Line Items]
Shares issued (in shares)	40,000	142,499
Shares issued, value		$ 14
Common stock issued for in-process research and development technology (in shares)	40,000		40,000
Common stock issued for in-process research and development technology	$ 500,000		$ 4
Sales Agreement \| Common Stock
Class of Stock [Line Items]
Shares issued (in shares)		142,499
Shares issued, value		$ 300,000
Purchase Agreement \| Warrant
Class of Stock [Line Items]
Exercise price (in dollar per share)				$ 8.4975

COMMITMENTS AND CONTINGENCIES	3 Months Ended
COMMITMENTS AND CONTINGENCIES	Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES License Agreement with the University of Utah Research Foundation In 2011, the Company entered into a license agreement with the University of Utah, under which, the Company acquired an exclusive license to an epigenetic enzyme lysine specific demethylase 1 ("LSD1"). In exchange for the license, the Company issued 2% equity ownership in the Company based on a fully diluted basis at the effective date of the agreement subject to certain adjustments specified in the agreement, such as granted revenue sharing rights on any resulting products or processes to commence on first commercial sale, and milestone payments based upon regulatory approval of any resulting product or process as well as on the second anniversary of first commercial sale. Cancer Prevention and Research Institute of Texas In June 2016, the Company entered into a Cancer Research Grant Contract with CPRIT. Pursuant to the contract, CPRIT awarded the Company a grant up to $18.7 million further modified to $16.1 million to fund development of LSD 1 inhibitor. This is a 3-year grant award originally expired on May 31, 2019. The Company applied for a no cost extension through November 30, 2023. The Company will retain ownership over any intellectual property developed under the contract ("Project Result"). With respect to non-commercial use of any Project Result, the Company agreed to grant to CPRIT a nonexclusive, irrevocable, royalty-free, perpetual, worldwide license with right to sublicense any necessary additional intellectual property rights to exploit all Project Results by CPRIT, other governmental entities and agencies of the State of Texas, and private or independent institutions of higher education located in Texas, for education, research and other non-commercial purposes. The Company is obligated to make revenue-sharing payments to CPRIT with respect to net sales of any product covered by the contract, up to a maximum repayment of certain percentage of the aggregate amount paid to the Company by CPRIT under the CPRIT contract. The payments are determined as a percentage of net sales, which may be reduced if the Company is required to obtain a license from a third party to sell any such product. In addition, upon meeting the foregoing limitation on revenue-sharing payments, the Company agreed to make continued revenue-sharing payments to CPRIT of less than 1% of net sales. Lease Agreement The Company presently leases office space under operating lease agreements on a month-to-month basis.

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Details)			3 Months Ended
	Oct. 14, 2022 $ / shares	Jan. 12, 2022 USD ($) shares	Mar. 31, 2023 USD ($) $ / shares shares	Mar. 31, 2022 USD ($) shares	Dec. 31, 2022 $ / shares
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Conversion ratio	0.04
Common stock, par value (in dollar per share) \| $ / shares	$ 0.0001		$ 0.0001		$ 0.0001
Impairment charges of long-lived assets			$ 0	$ 0
Antidilutive securities excluded from computation of earnings per share (in shares) \| shares			716,840	431,407
Aggregate payments under ASCA		$ 2,000,000
Purchase in-process research and development technology		1,500,000	$ 0	$ 1,500,000
Issuance of equity securities, net		$ 500,000	$ 311,681
Common Stock
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Issuance of equity securities, net (in shares) \| shares		40,000	142,499
Issuance of equity securities, net			$ 14

STOCKHOLDERS' EQUITY	3 Months Ended
STOCKHOLDERS' EQUITY	Mar. 31, 2023
Equity [Abstract]
STOCKHOLDERS' EQUITY	STOCKHOLDERS' EQUITY Common Stock Issuances During the three months ended March 31, 2023, the Company sold 142,499 ATM shares under the Sales Agreement, with gross proceeds of $0.3 million. On January 12, 2022, the Company issued 40,000 shares of the Company's common stock, valued at $0.5 million to purchase in-process research and development technology SP-3164, please refer to NOTE 2 for further discussion. Warrants Exercised for Cash The Company has five-year warrants outstanding that were issued in February 2020 and subsequently modified in December 2020 in connection with the issuance of additional inducement warrants. The warrants are exercisable at a price per share of $28.75. The inducement warrants expire on June 11, 2026, and are exercisable at a price per share of $29.55. The Company has 5.5 year warrants outstanding that were issued in April 2022, with an exercise price of $8.4975 per share. The warrants will be exercisable six months following the issuance date and will expire five and one-half years from the issuance date. As of March 31, 2023 and 2022, approximately 597,512 and 317,329 warrants remain outstanding

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-URI https://asc.fasb.org/topic&trid=2208762

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 14
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496171-112644

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 14
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496171-112644

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 18
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496189-112644

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (g)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 18
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496189-112644

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (h)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 14
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496171-112644

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 18
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496189-112644

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 16
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496180-112644

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (i)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 1
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Reference 16: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/extlink&oid=126731327&loc=SL126733271-114008

+ Details

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES	3 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES	BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States ("GAAP"). Any reference in these notes to applicable guidance is meant to refer to the authoritative GAAP as found in the Accounting Standard Codification ("ASC") and Accounting Standards Update ("ASU") of the Financial Accounting Standards Board ("FASB"). On October 14, 2022, the Company filed a Certificate of Amendment to the Company’s restated certificate of incorporation with the Secretary of State of the State of Delaware to effect a 1-for-25 reverse stock split of the Company’s issued and outstanding shares of common stock, par value $0.0001 per share (the “Reverse Stock Split”), which became effective on October 14, 2022. All historical share and per share amounts reflected throughout this report have been adjusted to reflect the Reverse Stock Split. Principles of Consolidation The condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation. Unaudited Interim Financial Information The accompanying interim financial statements are unaudited. These unaudited interim financial statements have been prepared in accordance with the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) for interim financial information. Accordingly, they do not include all the information and footnotes required by GAAP for complete financial statements. These unaudited interim financial statements should be read in conjunction with the audited financial statements and accompanying notes for the year ended December 31, 2022 included elsewhere in the Company's Annual Report on Form 10-K filed with the SEC on March 27, 2023. In the opinion of management, the unaudited interim financial statements reflect all the adjustments (consisting of normal recurring adjustments) necessary to state fairly the Company’s financial position as of March 31, 2023 and the results of operations for the three months ended March 31, 2023 and 2022. The interim results of operations are not necessarily indicative of the results that may occur for the full fiscal year. The December 31, 2022 balance sheet included herein was derived from the audited financial statements, but does not include all disclosures, including notes, required by GAAP for complete financial statements. Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America as defined by the FASB ASC requires management to make estimates and assumptions that affect certain reported amounts and disclosures. Accordingly, actual results could differ from those estimates. Cash and Cash Equivalents Salarius considers all highly liquid investments with original maturities of three months or less to be cash equivalents. Impairment of Long-Lived Assets Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that their carrying value may not be recoverable. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset. There were no impairment charges related to long-lived assets for the three months ended March 31, 2023 and 2022. Financial Instruments and Credit Risks Financial instruments that potentially subject the Company to credit risk include cash and cash equivalents and restricted cash. Cash is deposited in demand accounts in federally insured domestic institutions to minimize risk. Insurance is provided through the Federal Deposit Insurance Corporation. Although the balances in these accounts exceed the federally insured limit from time to time, the Company has not incurred losses related to these deposits. Warrants The Company determines whether warrants should be classified as a liability or equity. For warrants classified as liabilities, the Company estimates the fair value of the warrants at each reporting period using Level 3 inputs with changes in fair value recorded in the Condensed Consolidated Statement of Operations within change in fair value of warrant liability. The estimates in valuation models are based, in part, on subjective assumptions, including but not limited to stock price volatility, the expected life of the warrants, the risk-free interest rate and the fair value of the common stock underlying the warrants, and could differ materially in the future. The Company will continue to adjust the fair value of the warrant liability at the end of each reporting period for changes in fair value from the prior period until the earlier of the exercise or expiration of the applicable warrant. For warrants classified as equity contracts, the Company allocates the transaction proceeds to the warrants and any other free-standing instruments issued in the transaction based on an allowable allocation method. Clinical Trial Accruals The Company’s preclinical and clinical trials are performed by third party contract research organizations ("CROs") and/or clinical investigators, and clinical supplies are manufactured by contract manufacturing organizations ("CMOs"). Invoicing from these third parties may be monthly based upon services performed or based upon milestones achieved. The Company accrues these expenses based upon its assessment of the status of each clinical trial and the work completed, and upon information obtained from the CROs and CMOs. The Company’s estimates are dependent upon the timeliness and accuracy of data provided by the CROs and CMOs regarding the status and cost of the studies, and may not match the actual services performed by the organizations. This could result in adjustments to the Company’s research and development expenses in future periods. To date the Company has had no significant adjustments. Grants Receivable and Revenue Salarius’ source of revenue has been from a grant received from CPRIT. Grant revenue is recognized when qualifying costs are incurred and there is reasonable assurance that conditions of the grant have been met. Cash received from grants in advance of incurring qualifying costs is recorded as deferred revenue and recognized as revenue when qualifying costs are incurred. Research and Development Costs Research and development costs consist of expenses incurred in performing research and development activities, including pre-clinical studies and clinical trials. Research and development costs include salaries and personnel-related costs, consulting fees, fees paid for contract research services, the costs of laboratory equipment and facilities, license fees and other external costs. Research and development costs are expensed when incurred. Costs incurred in obtaining in-process research and development ("IPRD") that has no alternative future use are charged to research and development expense as acquired, and presented as investing activity cash outflows on the Statement of Cash Flow. Equity-Based Compensation Salarius measures equity-based compensation based on the grant date fair value of the awards and recognizes the associated expense in the financial statements over the requisite service period of the award, which is generally the vesting period. The Company uses the Black-Scholes option valuation model to estimate the fair value of stock options granted to employees and directors. Assumptions utilized in these models including expected volatility calculated based on implied volatility from traded stocks of peer companies, dividend yield and risk-free interest rate. Additionally, forfeitures are accounted for in compensation cost as they occur. Restricted stock and restricted stock units granted to employees and directors are measured at fair value based upon the closing price of the Company's common stock on the grant date. Loss Per Share Basic net loss per share is calculated by dividing the net loss applicable to common stockholders by the weighted average number of shares of common stock outstanding during the period. Since the Company was in a loss position for all periods presented, diluted net loss per share is the same as basic net loss per share for all periods, as the inclusion of all potential common shares outstanding is anti-dilutive. The number of anti-dilutive shares, consisting of common shares underlying (i) common stock options, (ii) stock purchase warrants, (iii) rights entitling holders to receive warrants to purchase the Company's common shares, and (iv) restricted stock units which have been excluded from the computation of diluted loss per share, was approximately 716,840 and 431,407 shares as of March 31, 2023 and 2022, respectively. Income Taxes Income taxes are recorded in accordance with FASB ASC Topic 740, Income Taxes ("ASC 740"), which provides for deferred taxes using an asset and liability approach. Under this method, deferred tax assets and liabilities are determined based on the difference between the financial reporting and the tax reporting basis of assets and liabilities and are measured using the enacted tax rates and laws that are expected to be in effect when the differences are expected to reverse. The Company provides a valuation allowance against net deferred tax assets unless, based upon the available evidence, it is more likely than not that the deferred tax assets will be realized. The Company has evaluated available evidence and concluded that the Company may not realize the benefit of its deferred tax assets; therefore, a valuation allowance has been established for the full amount of the deferred tax assets. The Company accounts for uncertain tax positions in accordance with the provisions of ASC 740. When uncertain tax positions exist, the Company recognizes the tax benefit of tax positions to the extent that the benefit will more likely than not be realized. The determination as to whether the tax benefit will more likely than not be realized is based upon the technical merits of the tax position as well as consideration of the available facts and circumstances. As of March 31, 2023 and December 31, 2022, the Company did not have any significant uncertain tax positions and no interest or penalties have been charged. The Company's practice is to recognize interest and/or penalties related to income tax matters in income tax expense. The Company is subject to routine audits by taxing jurisdictions. Acquisition and Strategic Collaboration Agreement On January 12, 2022, the Company entered into an Acquisition and Strategic Collaboration Agreement (the “ASCA”), with DeuteRx, LLC, a Delaware limited liability company (the “DeuteRx”), pursuant to which DeuteRx agreed to sell, and the Company agreed to purchase and assume from DeuteRx, all of DeuteRx’s rights, title, and interest in and to certain assets of DeuteRx, including SP-3164, DeuteRx’s intellectual property, information and data related to SP-3164, tangible materials or reagents related to SP-3164, goodwill, rights and claims, other than certain excluded assets (collectively, the “Purchased Assets”), all as more specifically set forth in the ASCA, and assume certain assumed liabilities, upon the terms and subject to the conditions set forth in the ASCA. The Aggregate purchase price paid under the ASCA was $2.0 million consisting of $1.5 million cash payment and the delivery of 40,000 shares of the Company's common stock, valued at $0.5 million. Total cost incurred in obtaining IPRD that has no alternative future use are charged to research and development expense as acquired, and presented as investing activity cash outflow on the Statement of Cash Flow. In addition, the Company agreed to pay to DeuteRx potential future milestone payments upon the occurrence of an applicable Milestone Event (as defined in the ASCA) and potential future royalty payments. A member of the Company’s Board of Directors also serves as a consultant to DeuteRx and is employed by an affiliate of DeuteRx. Recently Adopted Accounting Standard In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments — Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which requires the measurement of all expected credit losses for financial assets including trade receivables held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Subsequent to the issuance of ASU 2016-13, the FASB issued ASU 2018-19, Codification Improvements to Topic 326, Financial Instruments - Credit Losses. This ASU does not change the core principle of the guidance in ASU 2016-13, instead these amendments are intended to clarify and improve operability of certain topics included within the credit losses guidance. The FASB also subsequently issued ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments—Credit Losses, Derivatives and Hedging (Topic 815), and Financial Instruments (Topic 825), which did not change the core principle of the guidance in ASU 2016-13 but clarified that expected recoveries of amounts previously written off and expected to be written off should be included in the valuation account and should not exceed amounts previously written off and expected to be written off. The guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2019 for public business entities, excluding smaller reporting companies. Early adoption is permitted. As a smaller reporting company, the guidance was effective for the Company on January 1, 2023. The adoption of this standard did not have a material impact to this Company's consolidated financial statements.

GRANT RECEIVABLE FROM CPRIT (Details) - USD ($)	3 Months Ended
GRANT RECEIVABLE FROM CPRIT (Details) - USD ($)	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Grants receivable from CPRIT	$ 130,000		$ 1,610,490
Grants receivable	1,480,490	$ 0
Grant
Accounts, Notes, Loans and Financing Receivable [Line Items]
Grants receivable from CPRIT	$ 100,000		$ 1,600,000

GRANT RECEIVABLE FROM CPRIT	3 Months Ended
GRANT RECEIVABLE FROM CPRIT	Mar. 31, 2023
Receivables [Abstract]
GRANT RECEIVABLE FROM CPRIT	GRANT RECEIVABLE FROM CPRITGrants receivable represents qualifying costs incurred where there is reasonable assurance that conditions of the grant have been met but the corresponding funds have not been received as of the reporting date. Grants receivable balances are $0.1 million and $1.6 million at both March 31, 2023 and December 31, 2022. During the three months ended March 31, 2023, the Company received $1.5 million from CPRIT.

EQUITY-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of Fair Value Assumptions


			Three Months Ended March 31
			2022
Risk-free interest rate			1.62%-1.70%
Volatility			125.19% 126.42%
Expected life (years)			5.00-6.00
Expected dividend yield			0%

Schedule of Stock Option Activity

The following table summarizes stock option activity for employees and non-employees for the three months ended March 31, 2023 and 2022:


	Shares	Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value
Outstanding at December 31, 2021	63,919	$	68.75	8.50	$	—
Granted	50,160	$	12.00
Exercised	—
Forfeited	—
Expired	—
Outstanding at March 31, 2022	114,079	$	43.75	8.94	$	—
Exercisable at March 31, 2022	30,756	$	111.50	8.01	$	—

Outstanding at December 31, 2022	107,128	$	23.67	8.29	$	—
Granted	—
Exercised	—
Forfeited	—
Expired	—
Outstanding at March 31, 2023	107,128	$	23.67	8.04	$	—
Exercisable at March 31, 2023	59,870	$	28.30	7.83	$	—

EQUITY-BASED COMPENSATION - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options granted (in shares)	0	50,160
Fair value		$ 500,000
Unrecognized compensation cost, options	$ 700,000	$ 1,000,000.0
Restricted Stock and Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issued, weighted average grant date fair value (in usd per share)	$ 1.57
Fair value of awards	$ 76,679
Restricted Stock and Restricted Stock Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Restricted Stock and Restricted Stock Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, contractual term		10 years
Unrecognized compensation cost, recognition period	1 year 10 months 24 days
Employee Stock Option \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Employee Stock Option \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
2015 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares remaining available for grant of stock awards (in shares)	55,365
Employees \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	12,220
Officers and Directors \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	36,640