definitely genetic predisposition but that doesn't mean get symptoms

It is inherited but not all decendants will get it. Several genes involved.

I have ankylosing spondylitis. I was told that it was thought to be a gene issue. This means that it can be passed from one generation to another but could skip a few if the gene became dormant. I have no knowledge of anyone in my family with the condition currently and the older generations have passed so.... its always best to see a dr and get tests if availble.

You can be tested for the HLAB27 gene, but e en if the test is negative, you can still have it. There are other genes at work.

My rheumatologist told me they don't know for definite if it is hereditary but his opinion is that it is, my grandad had it, my dad has it, I have it and my other sister suffers with a bad back and was tested for the gene and has it too but she has never been diagnosed she said when it starts to get worse she will go see rheumatologist so I guess it is hereditary. 😥