An Extension Study of IMR-687 in Adult Patients With Sickle Cell Anemia

March 2, 2022 updated by: Imara, Inc.

An Open-label Extension Study of IMR-687 in Adult Patients With Sickle Cell Anemia (Homozygous HbSS or Sickle-β0 Thalassemia) Who Participated in Study IMR-SCD-102

This is an open-label extension study of IMR-687 in adult patients who completed Imara's blinded Phase 2a study (IMR-SCD-102). The open-label extension study will evaluate long-term safety and tolerability.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This is an open-label extension study of IMR-687 in adult patients with SCA who were previously participants in the Phase 2a study titled "A Phase 2a, Randomised, Double-Blind, Placebo-Controlled Study of IMR-687 in Adult Patients with Sickle Cell Anaemia (Homozygous HbSS or Sickle-β0 Thalassemia)."

This open-label extension study with IMR-687 will evaluate the long-term safety and tolerability of IMR 687 in adult SCA patients. Exploratory long-term PD parameters will also be examined.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
30

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United Kingdom
      • Bristol, United Kingdom
        • Bristol Haematology and Oncology Centre
      • London, United Kingdom
        • Royal London Hospital
      • London, United Kingdom, NW1 2PG
        • University College London Hospital NHS Foundation Trust
      • London, United Kingdom
        • Guy's and St Thomas Hospital CRF
  • United States
    • Connecticut
      • Farmington, Connecticut, United States, 06030
        • University of Connecticut Health Center
    • Florida
      • Hollywood, Florida, United States, 33021
        • Foundation for Sickle Cell Disease Research
    • Texas
      • Temple, Texas, United States, 76508
        • Baylor Scott & White Medical Center - Temple

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

14 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  1. Completed Study IMR-SCD-102.
  2. Female subjects must not be pregnant, not be breast feeding, and be highly unlikely to become pregnant. Male subjects must be unlikely to impregnate a partner.
  3. Subjects must be capable of giving informed consent and reading and signing the informed consent form after the nature of the study has been fully explained to them
  4. Subjects must be willing and able to complete all study assessments and procedures and to communicate effectively with the investigator and site staff.

Exclusion Criteria:

  1. Subjects with Hb >12.5 g/dL or <6 g/dL
  2. Subjects with known active hepatitis B or hepatitis C, with active or acute event of malaria or who are known to be positive for human immunodeficiency virus (HIV)
  3. eGFR <50 mL/min
  4. AST/ALT > 3x the upper limit of normal

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Open Label
Drug: IMR-687
Oral administration of once daily IMR-687

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Proportion of patients with adverse events and serious adverse events
Time Frame: Baseline to Month 49
  1. Incidence of Adverse Events
  2. Incidence of Serious Adverse Events
Baseline to Month 49
Proportion of patients with changes in safety cardiac parameters
Time Frame: Baseline to Month 49

a. Changes in 12-lead ECG parameters that are clinically significant and measured in milliseconds (ms).

The parameters are: PR interval, QRS duration, QT interval, ST segment duration and T wave duration.
Baseline to Month 49
Proportion of patients with changes in clinical laboratory tests
Time Frame: Baseline to Month 49
a. Clinically significant changes in clinical laboratory tests including serum chemistry, serum hematology and urinalysis
Baseline to Month 49
Proportion of patients with clinically significant abnormal vital signs
Time Frame: Baseline to Month 49
  1. Blood pressure measured in mmHg
  2. Pulse measured in beats per minute
  3. Respiration rate measured in breaths per minutes
  4. Temperature as measured in degrees F0 or C0
Baseline to Month 49

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Imara, Inc.

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Karen Tang, MD, Imara, Inc.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
May 22, 2019

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
March 1, 2025

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
March 1, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 18, 2019

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 8, 2019

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 13, 2019

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 4, 2022

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 2, 2022

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2022

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • IMR-SCD-102-EXT
  • 2018-003805-25 (EudraCT Number)

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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