The Symptomatic Cerebral Cavernous Malformation Trial of REC-994 (SYCAMORE)

August 1, 2025 updated by: Recursion Pharmaceuticals Inc.

A Two-Part Study of REC-994 in the Treatment of Adults With Symptomatic Cerebral Cavernous Malformation (CCM); Part 1: A Phase 2 Randomized, Double-Blind, Placebo-Controlled Clinical Trial to Evaluate the Safety, Efficacy and Pharmacokinetics of Two Doses of REC-994; Part 2: A Long-Term Blinded Extension Clinical Trial to Evaluate Long-Term Safety Tolerability and Efficacy of REC-994

This is a two-part, multi-center, randomized, double-blind, placebo-controlled study to investigate the safety, efficacy and pharmacokinetics of REC-994 (200 mg and 400 mg) compared to placebo in participants with symptomatic cerebral cavernous malformation (CCM).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

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

Part 1: Participants will receive treatment over a period of 12 months. Part 2: Optional long-term extension (LTE) for participants completing Part 1 and who are eligible for extended treatment with REC-994.

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 (Actual)

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.
62

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 Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Arizona
      • Phoenix, Arizona, United States, 85004
        • Xenoscience Inc
    • California
      • Los Angeles, California, United States, 90095
        • UCLA
      • Palo Alto, California, United States, 94304
        • Stanford University
    • Florida
      • Gainesville, Florida, United States, 32608
        • University of Florida
      • Jacksonville, Florida, United States, 32207-8202
        • Lyerly Neurosurgery
      • Port Saint Lucie, Florida, United States, 34987
        • Cleveland Clinic Florida
    • Georgia
      • Atlanta, Georgia, United States, 30322
        • Emory
    • New Jersey
      • Ridgewood, New Jersey, United States, 07450
        • Valley Hospital
    • New York
      • New York, New York, United States, 10027
        • Columbia University Medical Center
      • Rochester, New York, United States, 14642
        • University of Rochester Medical Center
    • Pennsylvania
      • Philadelphia, Pennsylvania, United States, 19104
        • University of Pennsylvania
      • Philadelphia, Pennsylvania, United States, 19104
        • Thomas Jefferson University
      • Pittsburgh, Pennsylvania, United States, 15260
        • University of Pittsburgh
    • Texas
      • Dallas, Texas, United States, 75390-8855
        • The University of Texas Southwestern Medical Center
    • Virginia
      • Charlottesville, Virginia, United States, 22908
        • University of Virginia

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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion criteria:

  1. 18 years of age or older with anatomic CCM lesions demonstrated by brain MRI
  2. Have symptomatic CCM
  3. Have provided written informed consent to participate in the study
  4. Have not participated in a clinical trial utilizing an investigational agent within 28 days or within 5 half-lives of the investigational drug (whichever is longer) prior to Screening

Exclusion Criteria:

  1. Symptoms deemed by the study Investigator to be caused exclusively by irreversible neuronal damage from prior stroke or neurosurgical instrumentation
  2. History of cranial irradiation or surgical/radiosurgical treatment of the primary symptomatic CCM lesion
  3. Pregnant or breast feeding
  4. Be unable or unwilling to participate in MRI assessments (e.g., claustrophobia, metal implant or implanted cardiac pacemaker)
  5. Liver dysfunction or active liver disease as defined by baseline serum transaminases >2x upper limit of normal (ULN)
  6. Have moderately or severely impaired renal function (estimated glomerular filtration rate [eGFR] <60ml/min) or active renal disease or have previously received a kidney transplant
  7. Have had a previous diagnosis of skeletal muscle disorders (myopathy) of any cause or have a baseline creatine kinase level > 5x ULN
  8. History of alcohol or substance abuse within 1 year prior to screening
  9. Clinically significant laboratory abnormality
  10. Have had an intracerebral hemorrhage within 3 months of screening or any brain surgery within 6 months of screening (not including the primary symptomatic CCM lesion)

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: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

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.
Active Comparator: REC-994 200 mg
REC-994 200 mg po once daily (QD) (1 200 mg REC-994 tablet, 1 matching placebo tablet)
Drug: Placebo
Placebo Tablets
Drug: REC-994
REC-994 200 mg tablets
Active Comparator: REC-994 400 mg
REC-994 400 mg po QD (2 200 mg REC-994 tablets)
Drug: REC-994
REC-994 200 mg tablets
Placebo Comparator: Placebo
Matching Placebo po QD (2 matching placebo tablets)
Drug: Placebo
Placebo Tablets

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
Time Frame
Incidence and severity of adverse events (AEs)
Time Frame: Up to 24 months
Up to 24 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
Change in patient reported outcomes (Cerebral Cavernous Malformation Health Index)
Time Frame: Up to 24 months
Up to 24 months
Change in patient reported outcomes (Modified Rankin Scale)
Time Frame: Up to 24 months
Up to 24 months
Change in patient reported outcomes (SymptoMScreen Score)
Time Frame: Up to 24 months
Up to 24 months
Change in disease-associated symptoms (number of MRI-confirmed cerebral hemorrhagic events)
Time Frame: Up to 24 months
Up to 24 months
Plasma concentrations of REC-994
Time Frame: Up to 12 months
Up to 12 months

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Time Frame
Change in disease-associated symptoms (size and number of lesions on MRI)
Time Frame: Up to 24 months
Up to 24 months

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.
Recursion Pharmaceuticals 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.
March 17, 2022

Primary Completion (Actual)

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.
June 30, 2025

Study Completion (Actual)

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.
June 30, 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).
October 8, 2021

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.
October 8, 2021

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.
October 20, 2021

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.
August 6, 2025

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.
August 1, 2025

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.
July 1, 2025

More Information

Terms related to this study

Keywords

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.
  • REC-994-201

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

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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