Inclusion Criteria :  Case group :  Gout patients Polynesian origin Aged 18 to 80 years Agreeing to participate in the study Having a 1st or 2nd degree relative who is also gouty and a 1st degree relative of the same generation and sex who is not gouty  Control group :  Non-gouty individuals who are 1st degree relatives of a gouty patient of the same generation and sex Aged 18 to 80 years Agreeing to participate in the study  Exclusion Criteria :  Pregnant women Persons under guardianship, curatorship or other legal incapacity Persons with a contraindication to Magnetic resonance imaging (MRI) examination For non-gouty controls : current hyperuricemic treatment (Allopurinol, Febuxostat, Probenecid or Benzbromarone) For gouty case : not participating in the TOPATA study (NCT04812886)