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Evaluate DF-003 in ex Vivo Assays Using Peripheral Blood Mononuclear Cell From Subjects With ROSAH Syndrome

A Phase 0 Study to Evaluate DF-003 in ex Vivo Assays Using Peripheral Blood Mononuclear Cells (PBMC) From Subjects With Retinal Dystrophy, Optic Nerve Edema, Splenomegaly, Anhidrosis and Headache (ROSAH) Syndrome.

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05319132
Acronym
ROSAH
Enrollment
4
Registered
2022-04-08
Start date
2022-09-06
Completion date
2028-05-06
Last updated
2025-08-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Unrecognized Condition

Keywords

ROSAH Syndrome.

Brief summary

Alpha-1 kinase (ALPK1) has been reported as a potential causative gene for ROSAH Syndrome. Genetic variants including T237M have been found in ROSAH Syndrome patients. Our in-house study has found that T237M mutation leads to hyperactivity of ALPK1, which may be the cause of the inflammatory syndromes found in ROSAH Syndrome patients. We hypothesize that T237M mutation ALPK1 cause ROSAH Syndrome and an ALPK1 inhibitor can be a potential therapy for treating this disease. To test our hypothesis, we designed an experiment in which ex vivo peripheral blood mononuclear cells (PBMCs) from ROSAH Syndrome patients will be exposed to a potent ALPK1 inhibitor (DF-003) or placebo. We expect to see downregulation of activated inflammatory genes, chemokine/cytokines and acute phase proteins in the ROSAH Syndrome patient samples that are exposed DF-003.

Interventions

OTHERAdult subjects with ROSAH syndrome

The main objective is to evaluate the ex vivo inhibitory potential of DF-003 on alpha-1 kinase activity.

Sponsors

Hospices Civils de Lyon
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Male or female aged over 18 * Patient with ROSAH syndrome with the confirm T237M mutation

Exclusion criteria

* person under legal protection or under protectives measures * person unable to express consent * person in emergency situation (vital or not) * person infected by Human Immunodeficiency Virus and/or Hepatitis B Virus and/or Hepatitis C Virus

Design outcomes

Primary

MeasureTime frameDescription
Cytokine release assaysAt day 0The Cytokine release assays will analyzed by ELISA in cells supernatants the Interleukin 8 (IL-8), Tumor Necrosis Factor (TNF) concentrations in the presence/absence of DF-003 and control.

Countries

France

Contacts

Primary ContactYVAN JAMILLOUX, MD
yvan.jamilloux@chu-lyon.fr04 26 73 26 36
Backup ContactNora MARTEL
nora.martel@chu-lyon.fr04 26 73 28 62

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026