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Cover
Jun. 15, 2022
Document Type 8-K
Amendment Flag false
Document Period End Date Jun. 15, 2022
Entity File Number 001-39717
Entity Registrant Name LIXTE BIOTECHNOLOGY HOLDINGS, INC.
Entity Central Index Key 0001335105
Entity Tax Identification Number 20-2903526
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 680 East Colorado Boulevard
Entity Address, Address Line Two Suite 180
Entity Address, City or Town Pasadena
Entity Address, State or Province CA
Entity Address, Postal Zip Code 91101
City Area Code (631)
Local Phone Number 830-7092
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Common Stock, par value $0.0001 per share  
Title of 12(b) Security Common Stock, par value $0.0001 per share
Trading Symbol LIXT
Security Exchange Name NASDAQ
Warrants to purchase Common Stock, par value $0.0001 per share  
Title of 12(b) Security Warrants to purchase Common Stock, par value $0.0001 per share
Trading Symbol LIXTW
Security Exchange Name NASDAQ