Recent Updates
Recently added Catalysts

Xevinapant

Phase 3

Undisclosed | Small molecule | Other |Merck KGaA|Trials Updated: Aug 20, 2025

Xevinapant development status

Highest phase Phase 3 (NCT05386550)
Phase scored for MKGAFPhase 1
Registered trials 3 across 2 sponsors since May 2022

Xevinapant target and mechanism

ModalitySmall molecule

Also known as Xevinapant (Debio 1143)

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

CONTROLLED
Total Trials1
Total Enrollment24

FDA Designations

No designations recorded

Xevinapant clinical trials

Xevinapant · 1 trial · 1 indication

Phase 1 1
NCT05519540PK Study of Xevinapant (Debio 1143) in Healthy East Asian ParticipantsHealthy
COMPLETED24 Analytics
PHASE1COMPLETED
PK Study of Xevinapant (Debio 1143) in Healthy East Asian Participants
HealthyUnlock trial analytics

Study Endpoints

Primary Endpoints

Area Under the Plasma Concentration-Time Curve From Time Zero to Last Sample Time (AUC0-tlast) of Xevinapant (Debio 1143)
Predose, 0.25, 0.5, 1.0, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 , 36, 48 and 72 hours postdose

The area under the concentration-time curve (AUC) from time zero (= dosing time) to the last sampling time (tlast) at which the concentration is at or above the lower limit of quantification. Calculated using the mixed log-linear trapezoidal rule (linear up, log down).

Area Under the Plasma Concentration-Time Curve From Time Zero Extrapolated to Infinity (AUC0-inf) of Xevinapant (Debio 1143)
Predose, 0.25, 0.5, 1.0, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 , 36, 48 and 72 hours postdose

The AUC from time zero (dosing time) extrapolated to infinity, based on the predicted value for the concentration at t last , as estimated using the linear regression from Terminal first order (elimination) rate constant (Lambda z) determination. AUC0-inf = AUC0-t plus Clast pred/lambda z. Lambda Z was terminal elimination rate constant determined from the terminal slope of the log-transformed plasma concentration curve using linear regression on terminal data points of the curve.

Maximum Observed Plasma Concentration (Cmax) of Xevinapant (Debio 1143)
Predose, 0.25, 0.5, 1.0, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 , 36, 48 and 72 hours postdose

Cmax was obtained directly from concentration versus time curve.

Secondary Endpoints

Number of Participants With Treatment-Emergent Adverse Events (TEAEs), Serious TEAEs, and Related TEAE's
Up to Day 8
Number of Participants With Treatment Emergent Adverse Events (TEAEs) by Severity
Baseline (Day 1) up to Day 8
Number of Participants With Clinically Significant Changes From Baseline in Laboratory Values
Baseline (Day 1) up to Day 8
Unlock Study Endpoints

Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Group 1: Japanese Participants: Xevinapant (Debio 1143)EXPERIMENTALXevinapant (Debio 1143) was administered in Healthy Japnaese participants at a dose of 200 milligrams (mg), orally under fasted conditions.
Group 2: Non-Japanese East Asian Participants: Xevinapant (Debio 1143)EXPERIMENTALXevinapant (Debio 1143) was administered in Healthy Non- Japanese participants at a dose of 200 mg, orally under fasted conditions.

Interventions

NameTypeDescription
Xevinapant (Debio 1143)DRUGAll participants (Japanese and non-Japanese) received a single oral dose of 200mg xevinapant (Debio 1143) on Day 1 under fasted condition.
Unlock Study Design Details

Eligibility Criteria

Age Range18 Years to 60 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Healthy participant of Japanese or other East Asian origin. Group 1: Japanese participants must be first generation (born in Japan) with both biological parents and all 4 biological grandparents being Japanese native born, lived for less than (\<)10 years outside of Japan, and...

Countries:United Kingdom
Unlock Eligibility Criteria

Frequently asked questions about Xevinapant

What is Xevinapant?

Xevinapant is an investigational small molecule drug developed by Merck KGaA. It is also known as Debio 1143. Clinical work to date has focused on pharmacokinetic evaluation in healthy volunteers rather than in a specific patient population.

Who makes Xevinapant?

Xevinapant is developed by Merck KGaA, which trades under the ticker MKGAF. The compound is also referred to as Debio 1143, a name that reflects its earlier development history.

Is Xevinapant the same as Debio 1143?

Yes. Xevinapant and Debio 1143 are two names for the same investigational compound. Searches using either name refer to the same small molecule being developed by Merck KGaA.

What phase is Xevinapant in?

Xevinapant is in Phase 1 clinical development. It is investigational and has not been approved by the FDA. The recorded Phase 1 activity consists of a completed pharmacokinetic study in healthy volunteers.

What clinical trials is Xevinapant in?

Xevinapant has been studied in the Phase 1 trial NCT05519540, titled a PK Study of Xevinapant (Debio 1143) in Healthy East Asian Participants. That trial was completed, enrolled 24 healthy volunteers, and was conducted in the United Kingdom.

What was studied in the Xevinapant Phase 1 trial?

NCT05519540 evaluated the pharmacokinetics of Xevinapant, also called Debio 1143, in healthy East Asian participants. The completed Phase 1 study enrolled 24 healthy volunteers of any sex, aged 18 years and older, and was run in the United Kingdom.