v3.22.2.2
Document and Entity Information
Dec. 05, 2022
Cover [Abstract]  
Amendment Flag false
Entity Central Index Key 0001503802
Document Type 8-K
Document Period End Date Dec. 05, 2022
Entity Registrant Name Karyopharm Therapeutics Inc.
Entity Incorporation State Country Code DE
Entity File Number 001-36167
Entity Tax Identification Number 26-3931704
Entity Address, Address Line One 85 Wells Avenue
Entity Address, Address Line Two 2nd Floor
Entity Address, City or Town Newton
Entity Address, State or Province MA
Entity Address, Postal Zip Code 02459
City Area Code (617)
Local Phone Number 658-0600
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, $0.0001 par value
Trading Symbol KPTI
Security Exchange Name NASDAQ
Entity Emerging Growth Company false