Clinical trial NCT05046119: Psychological and Biological Markers of Refractory Migraine
Official title: Factors Associated With Migraine Refractoriness to Preventive Treatments: Psychological Aspects and Relationship With Components of the Endocannabinoid System
Study type: OBSERVATIONAL
Overall status: UNKNOWN
Conditions: Migraine
Keywords: Migraine
Refractoriness
Monoclonal antibodies directed against CGRP
Psychological disturbances
Endocannabinoid system
Lead sponsor: IRCCS National Neurological Institute "C. Mondino" Foundation
Sponsor class: OTHER
First posted: 2021-09-16
Enrollment: 80
Sex: ALL
Minimum age (years): 18
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Eighty participants with EM and CM will be recruited at the Headache Science and Neurorehabilitation Centre of the IRCCS Mondino Foundation. The diagnosis of EM and CM is formulated according to the guidelines of the ICHD-III version (EM or CM with previous failure to at least 3 of the following classes of antimigraine preventive drugs :beta-blockers, antidepressants, calcium antagonists and, for CM, onabotulinumtoxinA).

Brief summary: The term "refractory" migraine describes a particularly aggressive form of the disease in which the patient does not benefit from any of the preventive therapies with the various classes of drugs available, including treatment with monoclonal antibodies directed against Calcitonin Gene Related Peptide (CGRP).

Anxiety, depressive symptoms, somatization, and pain hypersensitivity are significantly more prevalent in refractory migraineurs than in non-refractory subjects who benefit from preventive therapies, suggesting that these symptoms may contribute to treatment refractoriness. Recently, in a preliminary study on the efficacy of a CGRP-targeting monoclonal antibody in Chronic Migraine (CM) patients with at least 3 failures to previous preventive treatments, the investigators showed a higher prevalence of psychological disturbances in those who did respond to the monoclonal antibody compared with the responders. These data, although preliminary, point to a more psychologically complicated picture in non-responder patients compared with responders. To date, however, no neurobiological evaluations are available to explain how psychological comorbidities may contribute to treatment refractoriness. Isolated clinical evidence and growing pre-clinical evidence suggests a role for the endocannabinoid system in migraine. Hence, the present study aims to identify psychological and biological factors associated with refractory migraine. The investigators' hypothesis is that patients presenting with psychological disorders may bear an associated dysfunction of the endocannabinoid system, which makes them more resistant to migraine preventive therapies, including monoclonal antibodies directed against CGRP.

Detailed description: Migraine is a common and highly disabling condition, representing the second-leading cause of disability in the global ranking of most disabling diseases . In the majority of individuals, the disease manifests as episodic (EM), with attacks recurring weekly or monthly. In a smaller (2-3% of the general population), but still significant portion of patients, migraine becomes chronic, i.e., occurring on at least 15 days per month (CM).

Previous studies have shown that CM patients are characterized by the presence of multiple psychiatric comorbidities compared with subjects with episodic migraine and healthy controls. In recent years, it has also been shown that among the neurobiological systems involved in the genesis and development of mental disorders, the endocannabinoid system (ES) appears to play an active role. In particular, patients with these disorders are characterized, at the level of peripheral cells, by a gene alteration of cannabinoid receptors.

Several studies reported the involvement of SE in immune responses, psychological processes, transduction of neurobiological signals and pain, including migraine pain. Recently it has been shown that the peripheral gene expression of enzymes involved in the metabolism of anandamide (AEA) and 2-aciglycerol (2-AG), the two best known endocannabinoids, is altered in migraine patients, but more markedly in the chronic subtype, suggesting a role for these lipid molecules not only in the pathophysiology of the disease, but also in its exacerbation. The role of CGRP in the pathophysiology of migraine has now been demonstrated, although the mechanism of action at both peripheral and central levels and its possible interactions with other pathways are not completely known.

The term "refractory" migraine describes a particularly aggressive form of the disease in which the patient does not benefit from any of the preventive therapies with the various classes of drugs available, including treatment with monoclonal antibodies directed against CGRP (Consensus document of the European Headache Federation).

Anxiety, depressive symptoms, somatization, and pain hypersensitivity are significantly more prevalent in refractory migraineurs than in non-refractory subjects who benefit from preventive therapies, suggesting that these symptoms may contribute to treatment refractoriness. Recently, in a preliminary study regarding the efficacy of monoclonal antibody targeting CGRP in CM patients refractory to at least three preventive therapies,the investigators showed a higher prevalence of personality disorders (77% vs 37%) in those who were not responding to treatment at 1 year (non-responders: reduction in migraine days \<50%), compared with those who were responding (responders: reduction in migraine days ≥50%). Non-responders were also characterized by a higher prevalence of anxiety spectrum disorders and more stressful events than responders. These data, although preliminary, point to a more psychologically complicated picture in non-responder patients compared with responders. To date, however, no neurobiological data are available to explain how psychological comorbidities may contribute to treatment refractoriness.

In this frame, the present study aims to identify psychological and potential biochemical/molecular factors associated with refractory migraine. The investigators' hypothesis is that patients presenting with psychological disorders may bear an associated dysfunction of the endocannabinoid system, which makes them more resistant to migraine preventive therapies, including monoclonal antibodies directed against CGRP.

There will be a screening phase of one month in which patients will complete a daily headache diary in which they will note the occurrence, intensity and duration of attacks, as well as the use of symptomatic drugs. At baseline patients will undergo the psychological and biochemical/molecular evaluation. Subjects will then be treated with one of the three commercially available monoclonal antibodies targeting CGRP and will continue to record the characteristics of attacks and the use of symptomatic drugs in their headache diary. Follow-up visits are foreseen after 3 and 6 months of treatment. At 6 months, patients will be divided into 2 groups (responder or not responder to the treatment) depending on the reduction of monthly migraine days in the previous 3 months (\>50% and \<50%, respectively).

The patients who failed to respond to the treatment will be considered refractory.

Psychological evaluation: All patients will be evaluated by psychological interview and by adopting the DSM-V criteria for personality disturbances, anxiety and mood disorders. All patients will also be administered the Hospital Anxiety and Depression Scale (HADS) the Toronto Alexithymia Scale 20 (TAS-20), severity of dependence questionnaires (Severity Dependence Scale - SDS - and Leeds Dependence Questionnaire - LDQ), questionnaires related to Childhood trauma and Stressful life events.

Eligibility criteria: Inclusion Criteria:

1. Clinical characteristics that meet the criteria of the current International Headache Classification for Migraine or Chronic Migraine.
2. Age \>18, \<65 years of both sexes
3. At least 8 days of migraine/month and Migraine Disability Assessment Questionnaire (MIDAS) score greater than 11 at baseline\*.
4. Lack of benefit or intolerance or contraindication to at least three classes of drugs for the preventive therapy of migraine\*.

   * Drug Italian Agency (AIFA) criteria for the prescription of monoclonal antibodies directed against CGRP.

Exclusion Criteria:

1. dementia, psychosis, mental retardation
2. women of childbearing age without contraceptive protection, pregnant and lactating women

Primary outcomes:
measure: Personality disorders
timeFrame: Change from baseline to 3-month to 6-month
Secondary outcomes:
measure: Hospital Anxiety and Depression Scale (HADS)
timeFrame: Baseline, pre-receiving the treatment
measure: Toronto Alexitimia Scale 20 (TAS-20)
timeFrame: Baseline, pre-receiving the treatment
measure: Childhood traumas questionnaire
timeFrame: Baseline, pre-receiving the treatment
measure: Stressful life events questionnaire (SLESQ)
timeFrame: Baseline, pre-receiving the treatment
measure: The Leeds Dependence Questionnaire (LDQ)
timeFrame: Baseline, pre-receiving the treatment
measure: Severity of Dependence Scale (SDS)
timeFrame: Baseline, pre-receiving the treatment
measure: Endocannabinoid System (ES)
timeFrame: Baseline, pre-receiving the treatment
Other outcomes:
Locations:
city: Pavia
country: Italy
facility: Headache Science Center
Study officials:
affiliation: Headache Science Center
name: Cristina Tassorelli, Prof
role: PRINCIPAL_INVESTIGATOR
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