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Clinical Trial NCT07493317 for Major Depressive Disorder is recruiting. See the Trial Radar Card View and AI discovery tools for all the details. Or ask anything here.
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Neutralizing Interleukin (IL)-6 Phase 2 60 Monoclonal Antibody Biomarker-Driven Open-Label

Recruiting
Clinical Trial NCT07493317 is designed to study Treatment for Major Depressive Disorder. It is a Phase 2 interventional study that is recruiting, having started on 1 March 2026, with plans to enroll 60 participants. Led by Icahn School of Medicine at Mount Sinai, it is expected to complete by 6 February 2031. The latest data from ClinicalTrials.gov was last updated on 25 March 2026.
Brief Summary
The proposed study aims to establish the feasibility and safety of subcutaneous tocilizumab, a monoclonal antibody (mAb) against interleukin (IL)-6 receptor, in adults with Major Depressive Disorder (MDD) and evidence of peripheral immune activation. IL-6 is a pro-inflammatory cytokine implicated in the pathophysiology of depression. The investigators hypothesize that neutralizing peripheral immune signaling via IL-6...Show More
Detailed Description
This open-label, proof-of-concept interventional study is designed to evaluate the feasibility and safety of IL-6 receptor blockade using subcutaneous tocilizumab in adults with MDD and evidence of peripheral immune activation.

Participants with MDD (N=20) meeting immune enrichment criteria (elevated monocyte count) will receive tocilizumab 162 mg administered subcutaneously every 2 weeks for 8 weeks (5 total doses)...

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Official Title

Neutralizing Interleukin (IL)-6 Signaling to Reverse Immune Related Anhedonia in Patients With Major Depressive Disorder

Conditions
Major Depressive Disorder
Other Study IDs
  • STUDY-25-01000
NCT ID Number
Start Date (Actual)
2026-03
Last Update Posted
2026-03-25
Completion Date (Estimated)
2031-02-06
Enrollment (Estimated)
60
Study Type
Interventional
PHASE
Phase 2
Status
Recruiting
Keywords
Depression
Monoclonal antibody
Healthy Volunteer
Tocilizumab
Interleukin-6
Anhedonia
fMRI
Primary Purpose
Treatment
Design Allocation
Non-Randomized
Interventional Model
Parallel
Masking
None (Open Label)
Arms / Interventions
Participant Group/ArmIntervention/Treatment
ExperimentalParticipants with MDD
MDD participants will receive 5 doses of tocilizumab 162 mg administered via subcutaneous injection every 2 weeks over an 8-week period.
Tocilizumab
One treatment condition in an open-label study design: subcutaneous injection of tocilizumab 162 mg at weeks 0, 2, 4, 6, and 8.
No InterventionHealthy Control
Healthy controls will serve as a baseline comparison group for neuroimaging and biomarker analyses only.
N/A
Primary Outcome Measures
Outcome MeasureMeasure DescriptionTime Frame
Change in ventral stratal activation during reward processing (fMRI)
Change in ventral stratal activation (brain response) during reward processing (fMRI)
at week 0 and week 10
Secondary Outcome Measures
Outcome MeasureMeasure DescriptionTime Frame
Change in Snaith-Hamilton Pleasure Scale (SHAPS)
Changes in the following scales from baseline to end of treatment: Snaith-Hamilton Pleasure Scale (SHAPS): SHAPS total score ranges from 14 to 56, with higher scores indicating greater anhedonia.
at week 0 and week 12
Change in Montgomery-Asberg Depression Rating Scale (MADRS)
Changes in the following scales from baseline to end of treatment: Montgomery-Asberg Depression Rating Scale (MADRS): MADRS total score ranges from 0 to 60, with higher scores indicating greater depression severity.
at week 0 and week 12
Change in Temporal Experience of Pleasure Scale (TEPS)
Changes in the following scales from baseline to end of treatment: Temporal Experience of Pleasure Scale (TEPS): TEPS total score ranges from 25 to 120, with lower scores indicating greater anhedonia severity.
at week 0 and week 12
Participation Assistant
Eligibility Criteria

Eligible Ages
Adult, Older Adult
Minimum Age
18 Years
Eligible Sexes
All
Accepts Healthy Volunteers
Yes

For MDD participants:

  • Written informed consent;
  • Ability to comply with the requirements of the study as determined by the PI;
  • Ages 18-70 years;
  • Any gender;
  • DSM-5 diagnosis of MDD in a current Major Depressive Episode;
  • Immune enrichment criterion: elevated monocyte count ≥ 500 cells/μL at screening;
  • If patient is on antidepressant medication, they must be on a stable dose for ≥4 weeks prior to treatment;
  • SHAPS score ≥20
  • If female of childbearing potential, must agree to use of a medically accepted form of contraception, or else agree to abstinence until 6 months after the last dose of study drug;
  • Male patients, if heterosexually active with a partner who is female of childbearing potential, pregnant, or breastfeeding, must agree to barrier contraception for the treatment period and for at least 6 months after the last dose of the study drug. Female partners of male participants must use at least one form of highly effective contraception starting at least one cycle prior to male patient study drug initiation until 6 months after the last dose of study drug.
  • Meet all MRI safety criteria.

For Healthy Volunteers:

  • Written informed consent;
  • Ability to comply with the requirements of the study as determined by the PI;
  • Ages 18-70
  • Any gender;
  • No current or past DSM-5 psychiatric disorder;
  • Meet all MRI safety criteria.

For MDD Participants

  • A primary DSM-5 psychiatric diagnosis other than MDD, with the exception of comorbid anxiety disorders (including agoraphobia, generalized anxiety disorder, social anxiety disorder, panic disorder) and post-traumatic stress disorder, which are permitted.

  • History of schizophrenia, schizoaffective disorder, other psychotic disorder, MDD with psychotic features, or bipolar I or II disorder.

  • Diagnosis of a major neurocognitive disorder.

  • Moderate or severe substance use disorder within the past 6 months (excluding nicotine use disorder).

  • Positive urine toxicology screen for illicit substances at screening.

  • Serious or imminent risk of self-harm or violence, as determined by the PI, including:

    • Suicide attempt within the past 2 years, or
    • C-SSRS ideation score >2 within the past month.
  • Any contraindication to MRI, including claustrophobia, retained metallic foreign bodies, magnetic implants or pacemakers, or inability to tolerate MRI procedures.

  • Clinically significant abnormalities on physical examination or laboratory testing.

  • Unstable or clinically significant medical illness, including but not limited to hepatic, renal, gastrointestinal, respiratory, cardiovascular (including ischemic heart disease), endocrine, neurologic (including history of severe head injury), immunologic, or hematologic conditions.

  • Evidence of active or untreated infection, including

  • Active tuberculosis (TB) or untreated latent TB

  • Positive QuantiFERON-TB Gold test at screening

  • Known HIV infection

  • Active Hepatitis B or Hepatitis C infection

  • Current or recent (within an appropriate washout period) use of biologic therapies or other immunosuppressive agents (PRN NSAIDs permitted).

  • Known hypersensitivity to tocilizumab or its excipients.

  • Receipt of a live or live-attenuated vaccine within 30 days prior to first dose, or planned receipt during the study period.

  • Pregnancy, breastfeeding, or unwillingness to use effective contraception during the study and for 6 months after the last dose.

  • Any condition that, in the opinion of the PI, would compromise participant safety or data integrity.

For Healthy Volunteers

  • Any current or unstable medical illness, including hepatic, renal, gastrointestinal, respiratory, cardiovascular (including ischemic heart disease), endocrine, neurologic (including history of severe head injury), immunologic, or hematologic disease.
  • Use of biologic therapies or immunosuppressive agents (PRN NSAIDs permitted).
  • Positive urine toxicology screen for illicit substances at screening.
  • Pregnancy at the time of baseline assessments (e.g., MRI).
Icahn School of Medicine at Mount Sinai logoIcahn School of Medicine at Mount Sinai
Study Responsible Party
James Murrough, Principal Investigator, Professor, Icahn School of Medicine at Mount Sinai
Study Central Contact
Contact: Alexia Lizzano, 3322437059, [email protected]
Contact: Mackenzie Hargrove, 3322437052, [email protected]
1 Study Locations in 1 Countries

New York

Icahn School of Medicine at Mount Sinai, New York, New York, 10029, United States
Mackenzie Hargrove, Contact, 332-243-7052, [email protected]
Matthew Dobbs, Contact, 332-243-7055, [email protected]
James Murrough, Principal Investigator
Recruiting