Recent Updates
Recently added Catalysts

XmAb819

Phase 1

Clear Cell Renal Cell Carcinoma | Monoclonal antibody | Oncology |Xencor, Inc.|Last Updated: Mar 5, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
Premium
Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
Premium
Trial Design
UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment307
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05433142Study of XmAb®819 in Subjects With Advanced Clear Cell Renal Cell CarcinomaPHASE1 RECRUITING 307Jun 13, 2022Dec 1, 2028Mar 5, 202623 United States, France +2
Unlock Drug Trial Details
Study Endpoints
Primary Endpoints
Incidence of treatment-emergent adverse events (safety and tolerability of XmAb819)
28 days

Safety and tolerability as assessed by incidence of TEAEs; incidence of clinically significant changes in safety laboratory tests, PE findings, vital signs, and ECGs; incidence and severity of CRS

Incidence of dose limiting toxicities (DLTs)
28 days

Safety and tolerability as assessed by incidence of DLTs and all available data which will be used to determine the optimal dose regimen.

Secondary Endpoints
Measurement of Cmax
56 days
Measurement of AUCtau
56 days
Objective Response rate
42 days
Unlock Study Endpoints
Study Design & Arms
AllocationNA
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Dose Escalation and ExpansionEXPERIMENTALDose Escalation will establish the dosing schedule for XmAb819 administered IV and the dosing schedule of XmAb819 administered SC. The dosing schedule includes the priming dose, step-up priming dose(s), the minimum safe and biologically active dose. Dose Expansion may administer XmAb819 IV, and XmAb819 SC.
Interventions
NameTypeDescription
XmAb819BIOLOGICALMonoclonal Bispecific Antibody
Unlock Study Design Details
Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites23

Inclusion Criteria: * Subjects must have measurable disease by Response Evaluation Criteria in Solid Tumors (RECIST 1.1) as assessed by the local site investigator. Lesions situated in a previously irradiated area are considered measurable if progression has been demonstrated in such lesions. * Sub...

Countries:United StatesFranceSpainUnited Kingdom
Unlock Eligibility Criteria
Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT05433142primaryCompletionDate: changed
LOWMay 24, 2026NCT05433142studyFirstPostDate: changed