Work

A case report of CD4− CD8+ CD56− TCRγδ+ T-large granular lymphocytic leukaemia with severe aplastic anemia and a PNH clone

Year: 2026

Type: article

Abstract: T-large granular lymphocytic leukemia (T-LGLL) is a rare, indolent lymphoproliferative disorder of lymphocytes. Clonal expansion of T cells, driven by dysregulation of Fas-mediated apoptosis following activation, is a hallmark of this disease. In recent years, research on large granular T-cell leukemia has grown substantially compared with the past; however, most reports have focused on TCRαβ + cases, while studies on other subtypes remain limited, and diagnostic experience with coexisting conditions requires further refinement. This study reports, for the first time, a case of CD4 − CD8 + CD56 − TCRγδ + T-LGLL complicated by severe aplastic anemia (AA) and a paroxysmal nocturnal hemoglobinuria (PNH) clone. The case is characterized by positive TCRγδ gene rearrangement, with T-cell–mediated hematopoietic suppression leading to the development of AA and the PNH clone. We hope this study will address a gap in the current literature. Here, we summarize the common pathophysiological mechanisms and guiding treatment principles for these three diseases.

Source: Annals of Hematology

DOI: 10.1007/s00277-026-07141-7

Authors: Yufei Du, Jinling Zhang, Shengyu Jin

Institutions: Yanbian University, Yanbian University Hospital

Language: English

Topic: Acute Myeloid Leukemia Research

Subfield: Hematology

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $4,590