8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

DATE OF REPORT (DATE OF EARLIEST EVENT REPORTED): February 19, 2020

MOLECULIN BIOTECH, INC.

(Exact Name of Registrant as Specified in its Charter)

DELAWARE	001-37758	47-4671997
(State or Other Jurisdiction of Incorporation or Organization)	(Commission File No.)	(I.R.S. Employer Identification No.)

5300 Memorial Drive, Suite 950, Houston ,TX 77007

(Address of principal executive offices and zip code)

(713) 300-5160

(Registrant’s telephone number, including area code)

(Former name or former address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

[ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

[ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-14(c)).

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).                Emerging growth company [X]

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. [X] Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol (s)	Name of each exchange on which registered
Common Stock, par value $.001 per share	MBRX	The NASDAQ Stock Market LLC

Item 8.01    Other Events.

On February 19, 2020, Moleculin Biotech, Inc. (the “Company”) issued a press release announcing that it has received an independent assessment of the absence of cardiotoxicity in patients treated with Annamycin in both its US and European open label and single arm Phase 1 clinical trials. Data from the first 5 patients in the US and the first 9 patients in Europe were made available to an expert in chemotherapy who is affiliated with a leading cancer research institute in assessing cardiotoxicity. After review of this data, the independent expert concluded that he "does not see evidence of cardio-toxicity."

A copy of the press release is attached to this report as Exhibit 99.1 and is incorporated by reference herein.

Item 9.01     Financial Statements and Exhibits.

(d)    Exhibits.

Exhibit No.    Description

99.1Press Release dated February 19, 2020

SIGNATURE

Pursuant to the requirements of the Securities and Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

MOLECULIN BIOTECH, INC.

Date: February 19, 2020

By:    /s/ Jonathan P. Foster

Jonathan P. Foster

Chief Financial Officer

2

EXHIBIT INDEX

Exhibit No.Description

99.1Press Release dated February 19, 2020

3

EX-99.1

Exhibit 99.1

Moleculin Announces Positive Independent Report of No Cardiotoxicity in Annamycin Phase 1 To Date

Supports Moleculin’s Claim that Annamycin is a "Next Generation" Anthracycline

HOUSTON, February 20, 2020 /PRNewswire/ -- Moleculin Biotech, Inc., (Nasdaq: MBRX) ("Moleculin" or the "Company"), a clinical stage pharmaceutical company with a broad portfolio of drug candidates targeting highly resistant tumors, today announced that it has received an independent assessment of the absence of cardiotoxicity in patients treated with Annamycin in both its US and European open label and single arm Phase 1 clinical trials. Data from the first 5 patients in the US and the first 9 patients in Europe were made available to an expert in chemotherapy who is affiliated with a leading cancer research institute in assessing cardiotoxicity. After review of this data, the independent expert concluded that he "does not see evidence of cardio-toxicity."

The data made available included left ventricular ejection fraction (LVEF) as determined by echocardiograms, ECHO strain imaging, and Troponin levels. For a small population of patients, ECHO strains were not provided due to the limitations of delivery of such data by the clinical sites. "ECHO strain imaging" is a method in echocardiography (medical ultrasound) for measuring regional or global deformation of the myocardium (heart muscle). By strain rate imaging, the simultaneous function of different regions can be displayed and measured. Cardiac health biomarkers such as blood Troponin levels are considered an indicator of potential long-term heart damage.

"We are pleased to receive this independent assessment which further validates the absence of cardiotoxicity in patients to date of Annamycin," stated Wally Klemp, Chairman and CEO of Moleculin. "Currently approved anthracyclines are notoriously cardiotoxic, so demonstrating that Annamycin is not cardiotoxic, even in patients who have received more than the lifetime maximum cumulative anthracycline exposure established by the FDA, supports our claim that Annamycin is truly in a class by itself, and indeed a ‘Next Generation’ anthracycline." He continued, "We are excited to continue to demonstrate Annamycin’s excellent safety profile. We believe continuing to demonstrate the lack of cardiotoxicity, along with initial efficacy data shown while increasing the dosage to a therapeutic level, will make Annamycin an extremely promising new drug candidate."

About Moleculin Biotech, Inc.

Moleculin Biotech, Inc. is a clinical stage pharmaceutical company focused on the development of a broad portfolio of oncology drug candidates for the treatment of highly resistant tumors. The Company's clinical stage drugs are: Annamycin, a Next Generation Anthracycline, designed to avoid multidrug resistance mechanisms with little to no cardiotoxicity being studied for the treatment of relapsed or refractory acute myeloid leukemia, more commonly referred to as AML, WP1066, an Immune/Transcription Modulator

capable of inhibiting p-STAT3 and other oncogenic transcription factors while also stimulating a natural immune response, targeting brain tumors, pancreatic cancer and hematologic malignancies, and WP1220, an analog to WP1066, for the topical treatment of cutaneous T-cell lymphoma. Moleculin is also engaged in preclinical development of additional drug candidates, including additional Immune/Transcription Modulators, as well as compounds capable of Metabolism/Glycosylation Inhibition.

For more information about the Company, please visit http://www.moleculin.com.

Forward-Looking Statements

Some of the statements in this release are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, Section 21E of the Securities Exchange Act of 1934 and the Private Securities Litigation Reform Act of 1995, which involve risks and uncertainties. Forward-looking statements in this press release include, without limitation, the ability of Annamycin to continue to show safety and efficacy in patients and whether the level of activity and lack of toxicity experienced in the Company’s current trials can be demonstrated in a larger patient population. Although Moleculin believes that the expectations reflected in such forward-looking statements are reasonable as of the date made, expectations may prove to have been materially different from the results expressed or implied by such forward-looking statements. Moleculin Biotech has attempted to identify forward-looking statements by terminology including ''believes,'' ''estimates,'' ''anticipates,'' ''expects,'' ''plans,'' ''projects,'' ''intends,'' ''potential,'' ''may,'' ''could,'' ''might,'' ''will,'' ''should,'' ''approximately'' or other words that convey uncertainty of future events or outcomes to identify these forward-looking statements. These statements are only predictions and involve known and unknown risks, uncertainties, and other factors, including those discussed under Item 1A. "Risk Factors" in our most recently filed Form 10-K filed with the Securities and Exchange Commission ("SEC") and updated from time to time in our Form 10-Q filings and in our other public filings with the SEC. Any forward-looking statements contained in this release speak only as of its date. We undertake no obligation to update any forward-looking statements contained in this release to reflect events or circumstances occurring after its date or to reflect the occurrence of unanticipated events.

Contacts

James Salierno / Carol Ruth

The Ruth Group

646-536-7028 / 7000

jsalierno@theruthgroup.com

cruth@theruthgroup.com