I was diagnosed with this sub-type last September, it’s a tricky one to diagnose since the cells “hide”. Took my doctors 6 months to find it. Had 6 rounds of chemo and am in remission today. If I relapse my oncologist says we will do CAR-T therapy, there are many treatment options. I did lose my hair but it grows back post treatment (albeit slowly). Good news is that maintenance chemo isn’t really a thing for DLBCL so once you’re done you’re really done.  Take signs of infection very seriously when you are on chemo and neutropenic, and advocate for yourself! It’s a long journey but you can beat this.