Quarterly report pursuant to Section 13 or 15(d)

DOCUMENT AND ENTITY INFORMATION

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DOCUMENT AND ENTITY INFORMATION
9 Months Ended
Sep. 30, 2012
Oct. 31, 2012
Entity Registrant Name LIXTE BIOTECHNOLOGY HOLDINGS, INC.  
Entity Central Index Key 0001335105  
Current Fiscal Year End Date --12-31  
Entity Filer Category Smaller Reporting Company  
Trading Symbol lixt  
Entity Common Stock, Shares Outstanding   41,583,097
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2012  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2012