Target

HDAC6

Protein deacetylase HDAC6

As of the edition of 20 October 2026, HDAC6 (protein deacetylase HDAC6, UniProt Q9UBN7) has 9 drugs tested at it and 10 companies on the list, 3 on route A and 1 on route B.

Sources: UniProt, ClinicalTrials.gov, ChEMBL, FDA Orange Book and Purple Book, Pharos.

The protein

UniProt
Q9UBN7
How well studied
Drug target: an approved drug acts on it
Where it sits in the cell
Inside the cell
Solved structures
22
Disease areas
Cancer; Blood and lymph; Immune system; Urinary and reproductive; Heart and blood vessels; Nervous system; Lungs and airways; Skin and connective tissue
Registered trials of its drugs
288

Drugs at this target

StatusCount
Marketed1
Active2
Went quiet1
Stopped4
Status not established1
Total9
DrugStatusFurthest phaseUS protection
VorinostatMarketedPhase 3Ends 2027
RicolinostatStoppedPhase 2none listed
CitarinostatStoppedPhase 1none listed
Jbi-802 free baseActivePhase 2none listed
CKD-506Status not establishedPhase 2none listed
KA-2507StoppedPhase 2none listed
PKN605ActivePhase 2none listed
CKD-504Went quietPhase 1none listed
MTX110StoppedPhase 1none listed

9 of 9 drugs, the most tested first.

Companies at this target

Where the company standsCompanies
Route A3
Route B1
Engaged4
Undetermined2
Total on the list10
Three companies on route A or B, with the route only
CompanyRoute
Merck & Co.Route B
Bristol Myers SquibbRoute A
3E-Regenacy PharmaceuticalsRoute A

The other 7 companies at HDAC6

In the product

10 companies in all; 7 are not named here, and no score is.

See the 10 companies at HDAC6, ranked, with the facts behind eachRequest access. Nothing is shown until you do.