Lysine trials recruiting now

2 registrations that name lysine as a study arm and are recruiting or about to, as ClinicalTrials.gov listed them on Oct 20, 2026. Read each listing for its full criteria and current status.

Kymata never assesses eligibility. Each listing names its own criteria; only its study team can say whether someone can join. Trial doses are given under the trial's monitoring and are not a schedule for anyone outside it.

Filter 2 registrations

Status

Phase

2US sites across 2 states

All 2 registrations

RecruitingNCT06580145

Leucine in Midlife Depression

  • Phase 2
  • Emory University
  • About 75 people
  • Started Feb 1, 2025

In plain words A Phase 2 study of lysine in people 35 to 65, run by Emory University. It plans to enroll about 75 people at 1 US site.

Who it lists and where

Who the trial lists, as registered

Lists people 35 to 65. Conditions: Major Depression.

  • Able and willing to provide informed consent
  • Diagnosis of major depression per Structured Interview for DSM-V (SCID-V)
  • Moderate to severe depression- Inventory of Depressive Symptoms - Self Reported (IDS-SR score >34).
  • SHAPS score >30 on the 0-56 scale

11 more inclusion criteria and the exclusion criteria are on the listing.

What it tests, as registered

L-leucine; L-lysine

Registered summary

The study aims to investigate the effects of a 6-week leucine challenge on brain chemistry, connectivity, and behavior in people with midlife depression. The researchers will compare the leucine and an active comparator arm (lysine) for 6 weeks.

Where, as registered

1 US site in 1 state.

RecruitingNCT07150806

RYZ101 for the Treatment of Progressive or Recurrent Intracranial Meningioma

  • Phase 1 and 2
  • Joshua Palmer
  • About 30 people
  • Started Nov 12, 2025

In plain words A Phase 1 and 2 study of lysine in people 18 and older, run by Joshua Palmer. It plans to enroll about 30 people at 1 US site.

Who it lists and where

Who the trial lists, as registered

Lists people 18 and older. Conditions: Recurrent Meningioma.

  • Male or female patients of age > 18 years
  • Patients with 68Ga-DOTATATE positive recurrent or progressive meningiomas, any World Health Organization (WHO) grade, who have progressed after first line treatment.
  • For Grade I meningioma, patients must have either:
  • Progressive disease after at least surgical resection and radiotherapy, as defined as an increase in size of the measurable primary lesion on imaging by 25% or more between scans separated by no more than 12 months; or

33 more inclusion criteria and the exclusion criteria are on the listing.

What it tests, as registered

Actinium Ac 225 DOTATATE RYZ101; Biospecimen Collection; Computed Tomography; Echocardiography Test; Gallium Ga 68-DOTATATE; L-lysine/L-arginine-containing Amino Acid; Magnetic Resonance Imaging; Multigated Acquisition Scan; Positron Emission Tomography; Somatostatin Receptor Positron Emission Tomography

Registered summary

This phase I/II tests the safety, side effects, best dose and how well giving RYZ101 works for the treatment of patients with intracranial meningioma that is growing, spreading, or getting worse (progressive) or that has come back after a period of improvement (recurrent). RYZ101 is a radioactive drug. It binds to a protein called somatostatin receptor, which is found on some neuroendocrine tumor cells. Lutetium Lu 177-dotatate builds up in these cells and gives off radiation that may kill them. It is a type of radioconjugate and a type of somatostatin analog. The full summary is on the listing.

Where, as registered

1 US site in 1 state.

ClinicalTrials.gov lists 35 open registrations for this search, including ones where lysine is not a study arm or that are past the 2 we keep. Search them on ClinicalTrials.gov (opens in new tab).

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