My full brother was diagnosed with myotonic muscular dystrophy. his doctor recommended his siblings get tested. with no cure and no real treatment is that something we should really test for? thank you question

Perspective matters: Your perspective on life matters for this question Here a condition is triggered by a mutation in a gene. Its genetic pattern is dominant, meaning only one copy is needed to be affected. Most are passed from one affected parent & each offspring has 50% risk of having the disorder which may show up late in life. You could also pass it to a kid before diagnosis. To some that would matter.