NCT06619990 · Xencor, Inc.
Study of XmAb942 in Healthy Participants and Participants With Ulcerative Colitis
What this study is about
Brief summary The Phase 1 study described herein will evaluate the safety, tolerability, how the drug moves through the body and how the drug affects the body of XmAb942 in healthy volunteers (Parts A and B). Part C of this study will be a Phase 2 study to evaluate XmAb942 in participants with ulcerative colitis (UC).
View original scientific description
Brief summary The Phase 1 study described herein will evaluate the safety, tolerability, pharmacokinetics and pharmacodynamics of XmAb942 in healthy volunteers (Parts A and B). Part C of this study will be a Phase 2 study to evaluate XmAb942 in participants with ulcerative colitis (UC).
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Parts A and B
- Must be in good health with no significant medical history
- Clinical laboratory values within normal range
- BMI 18-35 (inclusive)
- Contraceptive use by men or women consistent with local regulations
- Able and willing to provide written informed consent Part C
- Must be in good health with no significant medical history
- UC diagnosis ≥ 3 months prior to screening
- Diagnosis of moderately to severely active UC as defined by a (MMS) ≥ 5, with a MES ≥ 2 and RBS ≥ 1
- Evidence of UC extending ≥ 15 cm from the anal verge, as determined by screening colonoscopy
- Must have inadequate response to, loss of response to, or intolerance to at least 1 of the conventional or advanced therapies of UC
- Able and willing to provide written informed consent
Exclusion criteria
- Parts A and B
- Any physical or psychological condition that prohibits study completion
- History of suicidal behavior or suicidal ideation
- Heavy use of nicotine containing products
- HIV, hepatitis B and hepatitis C positive
- Cardiac arrhythmia, or clinically significant abnormal ECG
- Active use of prescription medications within 14 days of Day -1
- Active use of over-the-counter, or herbal medication within 7 days of Screening
- Other investigational products within 30 days
- Blood or plasma donation within 60 days
- Pregnant or breastfeeding Part C
- Any physical or psychological condition that prohibits study participation
- Diagnosis of Crohn disease, indeterminate colitis, indeterminate colitis, microscopic colitis, ischemic colitis, infectious colitis, radiation colitis, and diverticular disease associated with colitis.
- Positive screen for Clostridium difficile (C. Difficile) toxins
- HIV, hepatitis B and hepatitis C positive
- Cardiac arrhythmia, or clinically significant abnormal ECG
- Pregnant or breastfeeding Other protocol defined inclusion/exclusion criteria apply.
Where
- Scottsdale, Arizona
- Bradenton, Florida
- Brandon, Florida
- Jacksonville, Florida
- Kissimmee, Florida
- Margate, Florida
- Palmetto Bay, Florida
- Tampa, Florida
- Louisville, Kentucky
- Albany, New York
- Rochester, New York
- Raleigh, North Carolina
And 11 more locations — see the full list below.
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jun 11, 2026 · Source of record for eligibility and locations