Could be genetic. Autoimmune related. Radiation from cancer treatments. Bone marrow issues. Mines autoimmune related

All that I have been told is that it is genetic. But my doctors don’t know what caused mine because they have never been able to find my mutated gene. Quite a bit of people with congenital neutropenia have the ELANE mutation. I’m one of the few who have had neutropenia since birth but don’t have the ELANE mutation.

I also know that chemo & radiation cause people to become neutropenic, but that neutropenia isn’t chronic. It’s medicine induced neutropenia. I don’t know much about leukopenia