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Tear Biomarkers for Migraine

Novel Diagnostic and Treatment Response Biomarkers in Tear Fluid of Migraine Patients

Status
Not yet recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07690696
Acronym
TEAR
Enrollment
400
Registered
2026-07-08
Start date
2026-09-30
Completion date
2029-09-29
Last updated
2026-07-10

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

Conditions

Migraine

Keywords

migraine, headache, tears, CGRP, PACAP-38, IL-10, IL-1β, TNF-α

Brief summary

The goal of this observational monocentric study is to investigate tear and serum biomarkers in patients with migraine compared with healthy controls, and to explore their potential diagnostic, clinical, and predictive value. In addition to the cross-sectional evaluation, a longitudinal subgroup analysis will be conducted to assess biomarker changes over time during treatment with anti- Calcitonin Gene-Related Peptide (anti-CGRP) therapies.

Interventions

DIAGNOSTIC_TESTPatients with migraine

Patients with migraine

Sponsors

Fondazione Policlinico Universitario Agostino Gemelli IRCCS
Lead SponsorOTHER

Study design

Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE

Eligibility

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

Inclusion criteria

patients with migraine * Male or female participants aged ≥ 18 years; * Diagnosis of migraine according to International Classification of Headache Disorders (ICHD) criteria; * Clinical indication, according to routine practice, for treatment with anti-CGRP monoclonal antibodies or gepants (only for the longitudinal subgroup); * Ability and willingness to provide written informed consent. Inclusion criteria for healthy controls * Male or female participants aged ≥ 18 years; * Subjects, without migraine; * Ability and willingness to provide written informed consent.

Exclusion criteria

(for both patients with migraine and healthy controls) * Fulfillment of ICHD diagnostic criteria for secondary headaches; * Active inflammatory ocular diseases; * Severe abnormalities in tear production; * Systemic inflammatory diseases that may interfere with biomarker interpretation.

Design outcomes

Primary

MeasureTime frameDescription
Differences in tear biomarkerThrough the study completion, about 3 yearsDifferences in tear levels between patients with migraine and healthy controls of the following biomarkers: Calcitonin Gene-Related Peptide (CGRP), pituitary adenylate cyclase-activating polypeptide-38 (PACAP-38), Interleukin 10 (IL-10), Interleukin 1β (IL-1β), Tumor necrosis factor-α (TNF-α).

Secondary

MeasureTime frameDescription
Correlations between tear biomarkers and clinical features of migraineThrough the study completion, about 3 years* Correlations between tear biomarkers and clinical features of migraine; * Biomarker levels across different migraine phenotypes; * Associations with psychiatric comorbidities and fibromyalgia; * Concordance between tear and plasma levels; longitudinal changes of tear fluid biomarkers during treatment; * Predictive value for treatment response.

Contacts

CONTACTCatello Vollono, MD, PhD, Neurologist
catello.vollono@policlinicogemelli.it+393920105407

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 11, 2026