A Study of the Effect of IW-1701 (Olinciguat), a Stimulator of Soluble Guanylate Cyclase (sGC), on Patients With Sickle Cell Disease (SCD) (STRONG SCD)
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ClinicalTrials.gov Identifier: NCT03285178 |
Recruitment Status :
Completed
First Posted : September 15, 2017
Last Update Posted : July 22, 2021
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Sickle Cell Disease | Drug: IW-1701 Drug: Placebo | Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 70 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Primary Purpose: | Treatment |
Official Title: | A Randomized, Placebo-controlled, Phase 2 Study to Evaluate the Safety and Pharmacodynamics of Once-daily Oral IW-1701 in Patients With Stable Sickle Cell Disease |
Actual Study Start Date : | December 22, 2017 |
Actual Primary Completion Date : | July 22, 2020 |
Actual Study Completion Date : | July 22, 2020 |

Arm | Intervention/treatment |
---|---|
Experimental: IW-1701 (Olinciguat) Low Dose |
Drug: IW-1701
Oral Tablet
Other Name: Olinciguat |
Experimental: IW-1701 (Olinciguat) Medium Dose |
Drug: IW-1701
Oral Tablet
Other Name: Olinciguat |
Experimental: IW-1701 (Olinciguat) High Dose |
Drug: IW-1701
Oral Tablet
Other Name: Olinciguat |
Experimental: IW-1701 (Olinciguat) Higher Dose |
Drug: IW-1701
Oral Tablet
Other Name: Olinciguat |
Placebo Comparator: Placebo |
Drug: Placebo
Oral Tablet |
- Incidence (number and percentage of patients) and frequency (number of events) of treatment-emergent adverse events (TEAE). [ Time Frame: From first dose of study treatment through 7 days of last dose. ]
- Incidence of treatment-emergent adverse events (TEAE) by severity [ Time Frame: From first dose of treatment through 7 days of last dose. ]
- Incidence of study drug related treatment-emergent adverse events (TEAE) [ Time Frame: From first dose of treatment through 7 days of last dose. ]

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Ages Eligible for Study: | 16 Years to 70 Years (Child, Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
INCLUSION CRITERIA
- Patient is ambulatory male or female 16 to 70 years of age at the Screening Visit.
- Patient has SCD, including HbSS, HbSC, HbSβ0-thalassemia, or HbSβ+-thalassemia, documented in their medical history.
- If patient is on medication(s) for SCD, such as hydroxyurea (HU), are on a stable regimen.
- Per medical history and/or patient recall, patient has had at least 1 and no more than 10 sickle cell-related pain crises in the 12 months before the Screening Visit and none occurring in the 4 weeks before the Randomization Visit.
- Patient completes daily eDiary entries for at least 10 days during the last 14 days of the Run in Period as assessed at the Randomization Visit.
- Women of childbearing potential must have a negative pregnancy test prior to randomization and must agree to use protocol-specified contraception from the Screening Visit through 90 days after the final dose of study drug.
- Male patients must be surgically sterile by vasectomy (conducted ≥60 days before the Screening Visit or confirmed via sperm analysis) or must agree to use protocol-specified contraception and agree to refrain from sperm donation from the Screening Visit through 90 days after the final dose of study drug.
EXCLUSION CRITERIA
- Patient requires a program of prescheduled, regularly administered chronic blood transfusion therapy.
- Patient has been hospitalized for an SCD-related complication in the 4 weeks before the Randomization Visit.
- Patient has taken opioid(s) >200 morphine mg equivalent/day within the 4 weeks before the Randomization Visit.
- Patient is taking aspirin ≥325 mg daily, P2Y12 inhibitors, any anticoagulant medication, specific inhibitors of phosphodiesterase 5 (PDE5), nonspecific inhibitors of PDE5, moderate or strong cytochrome P450 3A (CYP3A) inhibitors, any supplements for the treatment of erectile dysfunction, riociguat, or nitrates or nitric oxide donors in any form.
- Patient has major concurrent illness or medical condition that in the opinion of the Investigator would preclude participation in a clinical study.
NOTE: Other inclusion and exclusion criteria apply, per protocol

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03285178

Responsible Party: | Cyclerion Therapeutics |
ClinicalTrials.gov Identifier: | NCT03285178 |
Other Study ID Numbers: |
C1701-202 |
First Posted: | September 15, 2017 Key Record Dates |
Last Update Posted: | July 22, 2021 |
Last Verified: | July 2021 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Sickle Cell Disease SCD Olinciguat IW-1701 |
Anemia, Sickle Cell Anemia, Hemolytic, Congenital Anemia, Hemolytic Anemia |
Hematologic Diseases Hemoglobinopathies Genetic Diseases, Inborn |