Bone marrow microenvironment in autoimmune hemolytic anemia: from trephine biopsy to single cell RNA sequencing.

ABSTRACT: The role of bone marrow (BM) compensatory response in autoimmune hemolytic anemias (AIHAs) is emerging and inadequate reticulocytosis has been associated with more severe disease and adverse outcomes. However, few is known about the BM immunologic microenvironment composition in these diseases. Here we investigated BM features in a large cohort of 97 patients with autoimmune hemolytic anemia (AIHA) and observed a high prevalence of hypercellularity, dyserythropoiesis, reticulin fibrosis, and T-cell infiltration (65%, 29%, 76%, and 69% of patients, respectively). These findings were associated with inadequate bone marrow compensation, more severe anemia at onset, and need of multiple treatments. In a subset of warm type AIHA patients we investigated BM microenvironment by single-cell RNA se

SUBMITTER: Fattizzo B 

PROVIDER: S-EPMC12379653 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature