Drug

Fispemifene

As of the edition of 20 October 2026, Fispemifene is a small molecule: went quiet in 2016; acts on ESR1 and ESR2.

Sources: FDA Orange Book and Purple Book, other approval registers, ClinicalTrials.gov, ChEMBL.

The drug

Status
Went quiet, 2016
Kind
Small molecule
Registered trials
4, 0 stopped early
Disease areas
Hormones; Mental health; Urinary and reproductive; Lungs and airways

US protection

No US approval on record.

With no US approval on record there are no listed US patents or exclusivities.

This is the US only.

Companies that need a new molecule because of this drug

4 company-target rows on route A because of this drug.

Companies on route A for this drug

In the product

4 company-target rows are on route A because of Fispemifene.

Targets

GeneProteinUniProt
ESR1Estrogen receptorP03372
ESR2Estrogen receptor betaQ92731

Registered trials

PhaseTrialsCompletedActiveStopped early
Phase 24300
All trials4

Who ran its trials

CompanyRoleYears
QuatRx PharmaceuticalsLead sponsor of trials2006 to now
NexMedLead sponsor of trials2015 to now