Exhibit 32.1
CERTIFICATION TO SECTION 906 OF THE SARBANES-OXLEY ACT OF
2002
Pursuant
to 18 U.S.C. § 1350, as created by Section 906 of the
Sarbanes-Oxley Act of 2002, I, Anthony Cataldo, Chief
Executive Officer of GT Biopharma, Inc. (the
“Company”), hereby certify that, to the best of my
knowledge:
(i) the
Quarterly Report on Form 10-Q of the Company for the fiscal quarter
ended March 31, 2021 (the “Report”) fully complies with
the requirements of Section 13(a) or Section 15(d), as applicable,
of the Securities Exchange Act of 1934, as amended;
and
(ii)
the information contained in the Report fairly presents, in all
material respects, the financial condition and results of operation
of the Company.
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Date:
May 17, 2021
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By:
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/s/ Anthony
Cataldo
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Name: Anthony
Cataldo
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Title:
Chief
Executive Officer, Chairman and Director
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