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Completed Phase 1 Interventional Accepts healthy volunteers

Trial of IW-1973 (A Stimulator of Soluble Guanylate Cyclase (sGC)) in Healthy Volunteers

ClinicalTrials.gov ID: NCT02616861

Public ClinicalTrials.gov record NCT02616861. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Sep 3, 2026, 6:15 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A 2-stage Phase 1 Study of Safety, Tolerability, PK, and PD of IW-1973 Tablet in Healthy Volunteers in an Open-label, Single-dose Stage, and a Randomized, Double Blind, Placebo-controlled, Multiple-ascending-dose Stage

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

Stage 1: To assess the safety, tolerability, pharmacokinetic (PK) profile, and pharmacodynamic (PD) effects of the IW-1973 Tablet administered orally to healthy volunteers, in fed and fasted states, in a single-dose crossover study. Stage 2: To assess the safety, tolerability, PK profile, and PD effects of a range of doses of IW-1973 Tablet administered orally to healthy subjects in a 21-day, multiple ascending-dose study with optional up-titration of dose level within cohort.

Study identification

NCT ID
NCT02616861
Recruitment status
Completed
Study type
Interventional
Phase
Phase 1
Lead sponsor
Cyclerion Therapeutics
Industry
Enrollment
54 participants

Conditions and interventions

Conditions

Interventions

Drug

Eligibility (public fields only)

Age range
18 Years to 55 Years
Sex
All
Healthy volunteers
Accepts healthy volunteers

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Oct 31, 2015
Primary completion
Apr 30, 2016
Completion
May 31, 2016
Last update posted
Apr 2, 2019

2015 – 2016

United States locations

U.S. sites
1
U.S. states
1
U.S. cities
1
Facility City State ZIP Site status
Ironwood Investigator San Antonio Texas 78209

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT02616861, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Apr 2, 2019 · Synced Sep 3, 2026

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Open the official record

The complete protocol, eligibility criteria, and contact information for NCT02616861 live on ClinicalTrials.gov.

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