Hello @amu66, I would like to add my welcome to Connect along with @pag1949 and others. I'm glad to hear that you finally are on track for treating GCA. I'm wondering how many others are out there with similar stories. I did find some related articles that might shed some light on the topic.

"Giant cell arteritis (GCA) is a relatively infrequent disorder that is underdiagnosed and little appraised in the field of general cardiology."
--- (2009) - Giant cell arteritis as a cardiovascular entity: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2743816/

"As an inflammatory vascular disease, GCA can be directly and indirectly responsible for cardiovascular (CV) events."
--- (2022) - An Updated Review of Cardiovascular Events in Giant Cell Arteritis: https://www.mdpi.com/2077-0383/11/4/1005

You might also be interested in this related discussion:
--- What's your experience with Actemra for GCA?: https://connect.mayoclinic.org/discussion/gca-1/