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A Study to Evaluate the Relative Bioavailability of Two Tablet Formulations Compared to Capsule Formulation and the Effect of Food and Proton Pump Inhibitor on ZN-A-1041 Tablet(s) in Healthy Participants

A Phase 1, Open-Label, Randomized, Crossover, Two-Part Study to Evaluate the Relative Bioavailability of Two ZN-A-1041 Tablet Formulations Compared to Capsule Formulation and the Effect of Food and Proton Pump Inhibitor on the Pharmacokinetics of ZN-A-1041 Tablet(s) in Healthy Subjects

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07051993
Enrollment
18
Registered
2025-07-04
Start date
2025-06-27
Completion date
2025-07-12
Last updated
2025-10-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy Participants

Brief summary

This is a Phase 1, open-label, randomized, two-part study to evaluate the relative bioavailability (rBA) of two tablet formulations compared to the capsule formulation of ZN-A-1041 (Part 1). Part 2 of the study will evaluate the effect of food and rabeprazole on the ZN-A-1041 tablet formulation. No participants were enrolled in Part 2 of the study as it has been cancelled.

Interventions

Participants will be administered either a ZN-A-1041 capsule or a tablet orally.

Sponsors

Genentech, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
Yes

Inclusion criteria

* Body mass index (BMI) within the range of 18 to 32 kg/m\^2, inclusive * Negative hepatitis panel and negative HIV antibody screens * Negative screening test for latent Mycobacterium tuberculosis infection * Able to consume the high-fat meal within the protocol-specified time period and willing to consume 100% of the high-fat meal * Able to fast for 8 hours prior to dosing

Exclusion criteria

* Significant history or clinical manifestation of any metabolic, allergic, dermatological, hepatic, renal, hematological, pulmonary, cardiovascular, GI, neurological, or psychiatric disorder * Personal or family history of congenital long QT syndrome * History of significant hypersensitivity, intolerance, or allergy to any drug * History of acute GI symptoms * History of ophthalmological disease or clinically significant abnormality in the ophthalmic examination * Have significantly impaired hepatic function * Female who is pregnant or breastfeeding or intending to become pregnant during the study or within 90 days following the final ZN-A-1041 administration * Have a QTc interval corrected through use of Fredericia's formula \>450 millisecond (msec), PR interval \>210 msec, QRS complex \>120 msec, or heart rate \<50 beats per minute (bpm) * Use of any drugs known to be moderate or strong inhibitors or inducers of CYP3A or CYP2C8 * Poor peripheral venous access * History of malignancy within 5 years prior to enrollment

Design outcomes

Primary

MeasureTime frame
Geometric Mean Ratio and Associated 90% Confidence Interval (CI) of CmaxDays 1-12 (Part 1)
Geometric Mean Ratio and Associated 90% CI of AUC0-tDays 1-12 (Part 1)
Geometric Mean Ratio and Associated 90% CI of AUC0-infDays 1-12 (Part 1)
Maximum Observed Concentration (Cmax)Days 1-12 (Part 1)
Area Under the Concentration-Time curve from Hour 0 to the Last Measurable Concentration (AUC0-t)Days 1-12 (Part 1)
AUC Extrapolated to Infinity (AUC0-inf)Days 1-12 (Part 1)

Secondary

MeasureTime frame
Time to Maximum Observed Concentration (tmax)Days 1-12 (Part 1)
Number of Participants With Suicidal Ideation or Suicidal Behavior as Measured Using Columbia-Suicide Severity Rating Scale (C-SSRS)Baseline, days 1, 5, 9 and 12 (Part 1)
Apparent Terminal Elimination Rate ConstantDays 1-12 (Part 1)
Apparent Terminal Elimination Half-Life (t1/2)Days 1-12 (Part 1)
Apparent Systemic Clearance (CL/F)Days 1-12 (Part 1)
Apparent Volume of Distribution During the Terminal Elimination Phase (Vz/F)Days 1-12 (Part 1)
Percentage of Participants With Adverse Events (AEs)Up to approximately 16 days

Countries

United Kingdom

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026