Will our children have autism? X

Hello, I am new to this site. I have been guided here by my partners family due to the fact that both his brother and sister have autism although in completely different ways. I am not very educated on this as I have never had first hand experience with anyone with autism but am loving getting to know all members of his family and amazed by the beauty within his siblings. However we have recently been discuccing having children ourselves and I would really like to know what the chances are of us having a child with autism. Although this would not deter me I feel that having 2 children already it ismy responsibility to research as much as I can and prepare myself if need be. I have read lots on the genetics of autism but cant seem to find any solid research or feedback from people who have been through this. So I would greatly appreciate your help please.

If my partner has 2 autistic siblings but I have none in my family, what are the chances that our children with be autistic also?

Many thanks and warm blessings. X x