    <SEC-DOCUMENT>0001654954-21-010321-index.html : 20210923
    <SEC-HEADER>0001654954-21-010321.hdr.sgml : 20210923
    <ACCEPTANCE-DATETIME>20210923095126
    ACCESSION NUMBER:		0001654954-21-010321
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		50
    CONFORMED PERIOD OF REPORT:	20210917
    ITEM INFORMATION:		Other Events
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20210923
    DATE AS OF CHANGE:		20210923

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			GT Biopharma, Inc.
    		CENTRAL INDEX KEY:			0000109657
    		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
    		IRS NUMBER:				941620407
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-40023
    		FILM NUMBER:		211271284

    	BUSINESS ADDRESS:
    		STREET 1:		9350 WILSHIRE BLVD.
    		STREET 2:		SUITE 203
    		CITY:			BEVERLY HILLS
    		STATE:			CA
    		ZIP:			90212
    		BUSINESS PHONE:		(800) 304-9888

    	MAIL ADDRESS:
    		STREET 1:		9350 WILSHIRE BLVD.
    		STREET 2:		SUITE 203
    		CITY:			BEVERLY HILLS
    		STATE:			CA
    		ZIP:			90212

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	OXIS INTERNATIONAL INC
    		DATE OF NAME CHANGE:	19940916

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	DDI PHARMACEUTICALS INC
    		DATE OF NAME CHANGE:	19920703

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	DIAGNOSTIC DATA INC /DE/
    		DATE OF NAME CHANGE:	19850312
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>gtbp_8k.htm
    <DESCRIPTION>CURRENT REPORT
    <TEXT>
    Document 1 - file: gtbp_8k.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>gtbp_ex991.htm
    <DESCRIPTION>DR. JEFFREY MILLER PRESENTATION
    <TEXT>
    Document 2 - file: gtbp_ex991.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>gtbp_ex992.htm
    <DESCRIPTION>GT BIOPHARMA, INC. CORPORATE PRESENTATION
    <TEXT>
    Document 3 - file: gtbp_ex992.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>gtbp_ex991img1.jpg
    <DESCRIPTION>IMAGE
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    Document 4 - file: gtbp_ex991img1.jpg

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    <SEQUENCE>5
    <FILENAME>gtbp_ex991img10.jpg
    <DESCRIPTION>IMAGE
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    Document 5 - file: gtbp_ex991img10.jpg

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    <SEQUENCE>6
    <FILENAME>gtbp_ex991img2.jpg
    <DESCRIPTION>IMAGE
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    Document 6 - file: gtbp_ex991img2.jpg

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    <SEQUENCE>7
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    <DESCRIPTION>IMAGE
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    Document 7 - file: gtbp_ex991img3.jpg

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    <SEQUENCE>8
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    <DESCRIPTION>IMAGE
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    Document 8 - file: gtbp_ex991img4.jpg

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    <SEQUENCE>9
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    Document 9 - file: gtbp_ex991img5.jpg

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    <SEQUENCE>10
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    Document 10 - file: gtbp_ex991img6.jpg

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    <SEQUENCE>11
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    Document 11 - file: gtbp_ex991img7.jpg

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    Document 12 - file: gtbp_ex991img8.jpg

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    Document 13 - file: gtbp_ex991img9.jpg

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    Document 14 - file: gtbp_ex992img1.jpg

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    Document 15 - file: gtbp_ex992img10.jpg

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    Document 17 - file: gtbp_ex992img12.jpg

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    Document 19 - file: gtbp_ex992img14.jpg

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    Document 20 - file: gtbp_ex992img15.jpg

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    Document 21 - file: gtbp_ex992img16.jpg

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    Document 22 - file: gtbp_ex992img17.jpg

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    Document 24 - file: gtbp_ex992img19.jpg

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    Document 25 - file: gtbp_ex992img2.jpg

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    Document 26 - file: gtbp_ex992img20.jpg

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    <SEQUENCE>27
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    Document 27 - file: gtbp_ex992img21.jpg

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    <SEQUENCE>28
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    Document 28 - file: gtbp_ex992img22.jpg

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    <SEQUENCE>29
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    Document 29 - file: gtbp_ex992img23.jpg

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    Document 30 - file: gtbp_ex992img24.jpg

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    <SEQUENCE>31
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    Document 31 - file: gtbp_ex992img3.jpg

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    Document 33 - file: gtbp_ex992img5.jpg

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    Document 34 - file: gtbp_ex992img6.jpg

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    Document 35 - file: gtbp_ex992img7.jpg

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    Document 36 - file: gtbp_ex992img8.jpg

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    <SEQUENCE>38
    <FILENAME>gtpb-20210917.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
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    Document 38 - file: gtpb-20210917.xsd

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    <FILENAME>gtpb-20210917_cal.xml
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    Document 39 - file: gtpb-20210917_cal.xml

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    <SEQUENCE>40
    <FILENAME>gtpb-20210917_def.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE
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    Document 40 - file: gtpb-20210917_def.xml

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