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A phase 1 trial to evaluate the safety, tolerability, pharmacodynamics, and pharmacokinetics of VIS171 in healthy Japanese participants

A phase 1, randomized, double-blind, placebo-controlled, single ascending, fixed-dose trial to evaluate the safety, tolerability, pharmacodynamics, and pharmacokinetics of VIS171 in healthy Japanese participants

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2031240741
Enrollment
24
Registered
2025-03-25
Start date
2025-04-21
Completion date
Unknown
Last updated
2026-09-14

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

Conditions

healthy participants

Interventions

Investigational Medicinal Product 1: VIS171 500, 1000 or 1500 ug is administered subcutaneously in the abdomen as a single dose. Investigational Medicinal Product 2: Placebo Placebo is administered s

Sponsors

Watsuji Yuko
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Male or female participant between 18 and 55 years of age, inclusive, at the screening visit. Body mass index between 17 and 30 kg/m2, inclusive, at the screening visit. Participant must be of Japanese descent. A participant will be considered to be of Japanese ancestry based on verbal confirmation of familial heritage (a participants 4 grandparents were born in Japan and recognized to be Japanese). Healthy, as determined by pretrial medical evaluation (medical history, physical examination, vital signs, 12-lead electrocardiogram, and clinical laboratory evaluations), as judged by the principal investigator. Other protocol defined inclusion criteria should be applied

Exclusion criteria

Exclusion criteria: Receipt of blood products within 6 months prior to screening, or receipt of any medication classified as an antibody with human Fc moieties at any point in their known history. History of hypersensitivity to any component of the investigational medicinal product. Participants with uncontrolled hypertension (systolic blood pressure [SBP] >= 140 mmHg, diastolic blood pressure [DBP] >= 90 mmHg in any position) or symptomatic hypotension, any chronic infectious disease, or participants with a positive urine drug or alcohol breath screen test result at screening or baseline. Current symptoms of infection, diagnosis of Coronavirus Disease 2019 (COVID-19) (reverse transcription polymerase chain reaction [RT-PCR], antigen testing, or clinical diagnosis) in 21 days prior to screening, or ongoing diagnosis of Long COVID symptoms due to a prior COVID-19 infection. Received COVID-19 or influenza vaccination, during the 14 days prior to administration of the dose of study intervention. (Participants must be willing to abstain from receiving additional COVID-19 or influenza vaccinations within 14 days after the dose of study intervention. Other vaccination will be allowed as per local regulations.) Other protocol defined exclusion criteria should be applied

Design outcomes

Primary

MeasureTime frame
Incidence and severity of TEAEs.

Secondary

MeasureTime frame
1)Change from baseline in immune cell types, including the following: Absolute number of Treg and frequency %Treg/CD4+ cells. Absolute number and frequency (%) of T helper cells, cytotoxic T cells, and NK cells 2)Pharmacokinetic parameters: Cmax tmax AUClast AUCinfinity 3)Evaluation of serum ADA over time.

Contacts

Public ContactjRCT inquiry reception center EPS Corporation

EPS Corporation

jrct-inquiry@eps.co.jp+81-3-5684-7797

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Sep 19, 2026