Target

HCN4

Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4

As of the edition of 20 October 2026, HCN4 (potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4, UniProt Q9Y3Q4) has 3 drugs tested at it and 6 companies on the list, 0 on route A and 4 on route B.

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

The protein

UniProt
Q9Y3Q4
How well studied
Drug target: an approved drug acts on it
Where it sits in the cell
At a membrane
Solved structures
8
Disease areas
Heart and blood vessels; Infections; Blood and lymph; Cancer; Lungs and airways; Immune system; Inherited and neonatal; Nervous system
Registered trials of its drugs
92

Drugs at this target

StatusCount
Marketed2
Active1
Total3
DrugStatusFurthest phaseUS protection
IvabradineMarketedPhase 4Ends 2026
DronedaroneMarketedPhase 4none listed
MosedipimodActivePhase 2none listed

3 of 3 drugs, the most tested first.

Companies at this target

Where the company standsCompanies
Route B4
Engaged1
Undetermined1
Total on the list6
Three companies on route A or B, with the route only
CompanyRoute
SanofiRoute B
ServierRoute B
AmgenRoute B

The other 3 companies at HCN4

In the product

6 companies in all; 3 are not named here, and no score is.

See the 6 companies at HCN4, ranked, with the facts behind eachRequest access. Nothing is shown until you do.