Lymphoid Malignancies

The goal of this clinical trial is to learn if agenT-797 is safe to use on people undergoing allogenic hematological stem cell transplantation (SCT). The main questions it aims to answer are: * Is agenT-797 safe to use? * What medical problems do participants have when taking agenT-797? Participants will receive an infusion of agenT-797 about 7 days after their allogenic SCT.

This is an open-label, Phase 1/2 study designed to characterize the safety, tolerability, Pharmacokinetics(PK), and preliminary antitumor activity of AVM0703 administered as a single intravenous (IV) infusion to patients with lymphoid malignancies.

Patients with graft failure or delayed engraftment may benefit from a hematopoietic stem cell boost or an additional hematopoietic stem cell transplantation procedure. In such settings standard immune suppression strategies are avoided due to their myelosuppressive nature. Therefore those patients are at increased risk of graft versus host disease, and the infusion of a CD34 selected graft would reduce such a risk. The infusion of CD34 selected graft using CliniMACS plus is currently FDA FDA-approved indication for acute myeloid leukemia. However, the use of the Prodigy would streamline the processing, in terms of hands-off procedure, allowing to provision of this product to the patients without strains on the cell therapy lab team. This procedure has been demonstrated safe and effective in several single-center studies and is currently in advanced phase investigation in several studies for malignant and non-malignant conditions.