Migraine monoclonal antibodies against CGRP change brain activity depending on ligand or receptor target - an fMRI study

What Was Tested

The paper reports a study of Calcitonin and CGRP (Calcitonin Gene-Related Peptide) in the context of migraine, published as a clinical trial.

Based on a previous functional imaging study which investigated the CGRP receptor mAb (erenumab), the researchers hypothesized that (i) the CGRP ligand mAb galcanezumab would alter central trigeminal pain processing; (ii) responders to galcanezumab treatment would show specific hypothalamic modulation in contrast to non-responders; and (iii) the ligand and the receptor antibody differ in brain responses.

This work was supported by the German Ministry of Education and Research (BMBF) of ERA-Net Neuron under the project code BIOMIGA (01EW2002 to AM) and by the German Research Foundation (SFB936-178316478-A5 to AM).

Who Took Part

The abstract describes 26 patients taking part.

Using an established trigeminal nociceptive functional magnetic imaging paradigm, 26 migraine patients were subsequently scanned twice: before and 2-3 weeks after administration of galcanezumab.

What Was Measured

PubMed files the paper under topics including Antibodies, Monoclonal, Antineoplastic Agents, Immunological, Brain, Calcitonin, Calcitonin Gene-Related Peptide, Calcitonin Gene-Related Peptide Receptor Antagonists and Ligands.

Author keywords: CGRP antibodies, functional imaging, human, hypothalamus, medication and medicine.

What This Means in Plain Language

This is a clinical trial of Calcitonin and CGRP (Calcitonin Gene-Related Peptide) in 26 patients in people with migraine.

With fewer than 40 people, it is a small study, so it is better read as an early signal for further research than as a settled answer.

The abstract goes on to report its results in about 4 sentences; this page does not restate them, so read the paper for the findings and their limits.

The publication is from 2022 (eLife), a journal based in England.

More context: the Calcitonin compound page and the CGRP (Calcitonin Gene-Related Peptide) compound page, Migraine research.