With a median follow-up time of 13.0 months, median duration of response (DOR), progression-free survival, and overall survival (OS) were not reached. In conclusion, linperlisib plus chidamide demonstrated a favorable safety profile and encouraging preliminary efficacy in r/r PTCL.
Potential therapeutic agents (e.g. capivasertib, lenalidomide) were predicted, and lenalidomide may represent a feasible initial treatment option for PTCL, with an objective response rate (ORR) of 40.0% and a maximum survival duration exceeding 50 months. NET-RGs play crucial roles in diagnosis, prognosis, and TME regulation, and lenalidomide, a putative TNF-targeting agent, may represent a feasible initial treatment option in PTCL.
These "avatar" models preserve vital tumor heterogeneity and microenvironmental context, offering superior predictive value. The systematic development and integration of these next-generation models are essential to bridge the translational gap and advance precision medicine for all patients with T-cell malignancies.
Allo-SCT is a valid treatment option in relapsed/refractory PTCL where targeted therapies still play a limited role. Patients with AITL survived significantly better than patients with PTCL NOS or ALK-negative ALCL following a significantly lower RI, also when comparing CR/complete metabolic response (CMR) and PR patients separately. Higher age and non-CR at allo-SCT are associated with worse outcomes.
In summary, this study illustrates that neoplastic T cells can show an NK-like immunophenotype. Features useful for supporting T-lineage in this context include cytoplasmic CD3 expression assessed using a T-cell-specific CD3 antibody, clonal TCR gene rearrangement, BCL11B expression, and detection of TCRαβ, TCRγδ, or TRBC by immunohistochemistry.
On the other hand, depletion of DE Tfh cells via Ezh2 gene deletion, inhibition of EZH2 (using FDA-approved drug, tazemetostat), or anti-CXCR6 mAb led to tumor regression. These findings may be relevant to a subset of human AITL cases since we found that ~20-30% of AITL patient samples have concomitantly elevated expression of CXCR6, IL-18R1, and IFNG. Our study identified a pathogenic Tfh-like subset essential for AITL tumor progression in a mouse model and suggests that identifying and targeting a DE Tfh-like subset in AITL patients might be an effective strategy.