Skip to content

Safety, PK, PD, and Clinical Activity of Orally Administered KT-621 in Adult Patients With Atopic Dermatitis (AD)

A Phase 1b Open-label, Multicenter, Single-arm Study to Evaluate the Safety, Tolerability, Pharmacokinetics, Pharmacodynamics, and Clinical Activity of Orally Administered KT-621 in Adult Participants With Moderate to Severe Atopic Dermatitis

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06945458
Acronym
BroADen
Enrollment
22
Registered
2025-04-25
Start date
2025-04-17
Completion date
2025-11-10
Last updated
2026-01-26

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

Conditions

Atopic Dermatitis

Keywords

KT621, STAT6, STAT6 degrader, Targeted protein degrader, Phase 1

Brief summary

This is a study to evaluate safety, tolerability, pharmacokinetics, pharmacodynamics, and clinical activity of orally administered KT-621 in adult male and female patients with moderate to severe atopic dermatitis (AD).

Interventions

DRUGKT-621

Oral drug

Sponsors

Kymera Therapeutics, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
No

Inclusion criteria

* Participants aged 18 to 55 years (inclusive) at the time of screening * Participants must be willing and able to comply with scheduled visits, treatment plan, laboratory tests, and other procedures * Participants must have had chronic atopic dermatitis (AD) for at least 1 year before Screening. * Moderate to very severe eczema as determined by Eczema Area and Severity Index (EASI) score of at least 16 at the baseline visit. * A validated Investigator Global Assessment (vIGA) score of at least 3 at the baseline visit, indicating moderate to severe AD. * At least 10% body surface area (BSA) of AD involvement at the baseline visit. * Weekly average Peak Pruritus Numeric Rating Scale (NRS) of at least 4 at the baseline visit. * Documented history within 6 months prior to baseline visit of either inadequate response or contraindication to topical medications for AD. * Application of stable dose of moisturizer at least twice daily for at least 7 consecutive days immediately prior to the baseline visit.

Exclusion criteria

* Participants who have a clinically relevant history of respiratory, gastrointestinal (GI), renal, hepatic, hematological, lymphatic, endocrinological, neurological, cardiovascular, psychiatric, musculoskeletal, genitourinary, immunological, ophthalmological, or connective tissue diseases or disorders. * Participants who have any surgical or medical procedure planned during participation in the study. * Participants with a history of alcohol or substance abuse within the previous 2 years. * Participants who have any known factor, condition, or disease that might interfere with treatment compliance, study conduct or interpretation of the results. * Participants whose results from clinical laboratory safety tests are outside the local reference range at Screening. * Participants who have been dosed with any investigational drug or device in a clinical study within 8 weeks or 5 half-lives (whichever is longer) of KT-621 administration. * Participants with a history of lack of response to any medication targeting interleukin (IL)-4, IL-13, and/or janus kinase (JAK)- signal transducer and activator of transcription (STAT) pathways (e.g. dupilumab, tralokinumab, upadacitinib, abrocitinib) at approved doses after at least 16 weeks of therapy. * Pregnant or breastfeeding women, or women planning to become pregnant or breastfeed during the study. * Female participants of childbearing potential with a positive or undetermined pregnancy result at the Screening and baseline visits. * Participants with a known sensitivity to any of the components of KT-621. * Participants who are a member of the investigational team or his/her immediate family.

Design outcomes

Primary

MeasureTime frame
Incidence of adverse events (AEs)From enrollment through the safety follow-up visit on Day 43
Incidence of treatment-emergent potentially clinically-significant abnormalities in electrocardiogram (ECG) results, vital signs, or laboratory test results from the serum chemistry, hematology (with differential), chemistry, or coagulation panels.From enrollment through the safety follow-up visit on Day 43

Secondary

MeasureTime frameDescription
Plasma PK parameter estimates of KT-621 derived from plasma concentration-time dataFrom baseline visit through the safety follow-up visit on Day 43Trough concentrations taken at each visit before dosing, post-dose concentrations taken after dosing at Days 1 and 15.

Countries

United States

Outcome results

None listed

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