What is the preferred initial therapy for T-cell lymphoblastic lymphoma in non-AYA, non-elderly adults?

In my opinion, there is no single best choice in this situation, but there are several reasonable options. Given how rare this disease is, I think physician comfort with a specific regimen is arguably the most important characteristic. Any attempt to identify an approach that yielded the best long term outcome will likely depend on cross-trial comparisons of subgroup analyses--clearly not the strongest evidence base on which to make decisions! Going outside of your comfort zone to try a new regi...