Is the firstborn definitely getting the sick gene?

Good morning,
I wanted a confirmation that is, if the disease does not skip generations, does it mean that the firstborn certainly receives the gene while the others probably will (50%)?
What is the probability of the disease manifesting itself?
Best regards and thanks
RN (49 years old)

Hello, this means that each child has a 50% risk of receiving the mutation. It has nothing to do with being firstborn. For any further information, we suggest that you call us on the toll-free number 800.388.330 and also to meet us at one of our outpatient clinics, where we can speak in person and clarify all your doubts.