LIXTE Biotechnology Holdings, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions (Details Narrative)

Related Party Transactions (Details Narrative) - USD ($)							3 Months Ended	9 Months Ended
	Jul. 14, 2021	Apr. 22, 2021	Apr. 09, 2021	Aug. 12, 2020	Aug. 02, 2020	Jul. 15, 2020	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Aggregate annual compensation			$ 775,000
Consulting Agreement [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Exercised		666,667
Shares Issued During Period, Value, Stock Based Research and Development Costs	$ 3.00
Dr. Kovach [Member] \| Employment Agreement [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Compensatipon for non officer directors						$ 250,000
Dr. Kovach [Member] \| Employment Agreement [Member] \| General and Administrative Expense [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Compensatipon for non officer directors							$ 15,000		$ 45,000
Dr. James S. Miser, M.D [Member] \| Employment Agreement [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Compensatipon for non officer directors					$ 150,000
Increase in annual salary								$ 175,000
Eric J. Forman [Member] \| Employment Agreement [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Compensatipon for non officer directors				$ 120,000
Increase in annual salary								175,000
Eric Forman [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Professional fees							14,000		$ 38,000
Robert N. Weingarten [Member] \| Employment Agreement [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Compensatipon for non officer directors				$ 120,000
Increase in annual salary								175,000
Mr. Weingarten [Member] \| Employment Agreement [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Compensatipon for non officer directors							$ 32,620	$ 79,995
Director [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Exercised		75,000
Shares Issued During Period, Value, Stock Based Research and Development Costs		$ 0.72
Compensatipon for non officer directors			20,000
Chairman Of Audit Committee [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Compensatipon for non officer directors			10,000
Chairman Of Other Committees [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Compensatipon for non officer directors			5,000
Member Of Audit Committee [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Compensatipon for non officer directors			5,000
Member Of Other Committees [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Compensatipon for non officer directors			$ 2,500