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A Study to Investigate How Well an Intracolonic Formulation of Two Monoclonal Antibodies is Tolerated in Healthy Participants and the Ability for the Antibodies to be Taken up by the Body Via the Colon

An Open-label, Phase 1, Pharmacokinetic Study of a Single Dose of Transcolonically Administered Adalimumab and Guselkumab in Healthy Adult Participants

Status
Not yet recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07788807
Enrollment
18
Registered
2026-08-26
Start date
2026-09-15
Completion date
2026-12-30
Last updated
2026-08-26

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

Conditions

Healthy Subjects

Brief summary

This is a proof-of-concept study to investigate whether antibodies (guselkumab and adalimumab) delivered directly to the colon can enter the systemic circulation. The study endpoints chosen for this study are commonly used for evaluating the safety, tolerability, and PK of single doses of IPs. No interim analysis is planned.

Interventions

DRUGAdalimumab

Single intracolonic administration of adalimumab

DRUGGuselkumab

Single intracolonic administration of guselkumab

DRUGSDL-001

SDL-001 is a formulation administered intracolonically with monoclonal antibodies

Sponsors

Surmount Services, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 45 Years
Healthy volunteers
Yes

Inclusion criteria

* In good general health, with no significant medical history, and have no clinically significant abnormalities on physical examination at Screening and/or before the first administration of the study drug, at the discretion of the PI or designee. * Body mass index (BMI) between ≥ 18.0 and ≤ 32.0 kg/m2 and weight ≥ 50 and ≤ 100 kg.

Exclusion criteria

* Pregnant, planning to become pregnant, or currently breastfeeding * Current or recent clinically significant infection * Any history of inflammatory bowel disease * History of malignancy, except for non-melanoma skin cancer excised

Design outcomes

Primary

MeasureTime frame
Plasma PK parameters- TmaxFrom Day 1 to Day 14 (EOS visit)
Plasma PK parameters- AUC0-lastFrom Day 1 to Day 14 (EOS visit)
Serum concentration of adalimumabFrom Day 1 to Day 14 (EOS visit)
Serum concentration of guselkumabFrom Day 1 to Day 14 (EOS visit)
Plasma PK parameters CmaxFrom Day 1 to Day 14 (EOS visit)

Secondary

MeasureTime frame
Number of participants with abnormal Physical examination findingsFrom Day 1 to Day 14 (EOS visit)
Incidence of TEAEsFrom Day 1 to Day 14 (EOS visit)
Number of participants with abnormal ECG readingsDays 1, 3,7 and day 14 (EOS visit)
Number of participants with abnormal Laboratory findingsDays 1, 3,7 and day 14 (EOS visit)
Incidence of SAEsFrom Day 1 to Day 14 (EOS visit)
Number of participants with abnormal vital signsFrom Day 1 to Day 14 (EOS visit)

Contacts

CONTACTChristopher Moller
cmoller@usc.edu.au+61 7 5409 8659
PRINCIPAL_INVESTIGATORChristopher Moller

University of the Sunshine Coast Clinical Trials, Maroochydore, QLD

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 27, 2026