Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2020	Mar. 15, 2022	Jun. 30, 2021
Cover [Abstract]
Entity Registrant Name	Gene Biotherapeutics, Inc.
Entity Central Index Key	0000772320
Document Type	10-K/A
Document Period End Date	Dec. 31, 2020
Amendment Flag	true
Amendment Description	This Amendment No. 1 on Form 10-K/A (“Amendment”) is being filed to reflect that the Company’s predecessor auditor did not reissue its audit report for the financial statements for the year ended December 31, 2019, and the Company did not include the audit report in the Annual Report on Form 10-K filed with the Commission on March 30, 2022 (the "10-K"). The audit report issued by the auditor for the financial statements for the year ended December 31, 2020 has been revised, a note has been added to the header of the financial statements, and an additional Note 12 has been added to the footnotes of the financial statements. Otherwise, all other information in this Amendment is the same as the original 10-K. The Company plans to file a further amendment to the 10-K to include an audit report for the financial statements for the year ended December 31, 2019.
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	No
Entity Interactive Data Current	No
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 1,100,000
Entity Common Stock, Shares Outstanding		64,931,888
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2020