Anyone else diagnosed with Adult muscular dystrophy?

After an extensive study of me and a DNA glut biopsy I have been diagnosed with limb/girdle adult onset muscular dystrophy. Want to find others! The interesting thing is I have only one copy of this genetic mutation!! - it’s a dominate copy, but this is very rare - and of interest. Doesn’t change my life as there isn’t anything to fix of course. But maybe I can help research. I’m 78! With RA and ostio that have been painful for many many years. But the muscle atrophy and loss seemed different - and it is! Any one out there identify???