This is a monocentric, no-profit, retrospective and prospective observational cohort study conducted at IRCCS Ospedale San Raffaele.
The study does not entail any additional procedures or interventions for participants. Biological samples (including blood/serum and muscle biopsies) are obtained for a previously approved study (LAMA2\_GUP24002) and collected under the existing BancaINSpe informed consent.
For the present study, analyses will be performed on biospecimens already stored or that will be stored at BancaINSpe, using portions of material already collected for the LAMA2\_GUP24002 protocol.