Drug

XL-844

As of the edition of 20 October 2026, XL-844 is a drug: stopped in 2008; acts on CHEK1 and CHEK2.

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

The drug

Status
Stopped, 2008
Kind
Unknown
Registered trials
2, 2 stopped early
Disease areas
Blood and lymph; Cancer; Immune system

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

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

Companies on route A for this drug

In the product

2 company-target rows are on route A because of XL-844.

Targets

GeneProteinUniProt
CHEK1Serine/threonine-protein kinase Chk1O14757
CHEK2Serine/threonine-protein kinase Chk2O96017

Registered trials

PhaseTrialsCompletedActiveStopped early
Phase 12002
All trials2

Who ran its trials

CompanyRoleYears
ExelixisLead sponsor of trials2007 to now