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Updated: May 29, 2026
Proliferation and Differentiation of Murine Myeloid Precursor 32D/G-CSF-R Cells
Published on: February 21, 2018
Homozygous FCGR3A-158V alleles predispose to late onset neutropenia after CHOP-R for diffuse large B-cell lymphoma
C Keane1, J P Nourse, P Crooks
1Haematology Department, Princess Alexandra Hospital, Brisbane, Queensland, Australia.
Background:
Recent reports suggest genetic polymorphisms influence susceptibility to rituximab-induced late-onset neutropenia (LON), which in turn may be a predictor of good outcome in B-cell lymphoma.
Aims:
We report the largest study to date assessing FCGR3A-V158F polymorphisms in diffuse large B-cell lymphoma (DLBCL) treated with cyclophosphamide/hydroxydaunorubicin/Oncovin (vincristine)/prednisone/rituximab (CHOP-R). The influence of C1qA-A276G polymorphisms in DLBCL, and the impact of both polymorphisms on susceptibility to LON and outcome were also examined.
Methods:
115 DLBCL patients treated with CHOP-R were compared with 105 healthy White people controls with regards to FCGR3A-V158F and C1qA-A276G polymorphisms. LON incidence and event-free and overall survival (EFS and OS) were analysed for linkage to either polymorphism.
Results:
The FCGR3A-V158F but not the C1qA-A276G polymorphism influenced the risk of developing LON. 50% of FCGR3A-158V/V patients experienced LON. In contrast, only 7% V/F and 2% F/F experienced LON. The FCGR3A-158V/V genotype was associated with LON compared with V/F (P = 0.028) and F/F genotypes (P = 0.005). Although no patients with either LON or FCGR3A-158V homozygosity relapsed compared with 33% FCGR3A-158F/F and 21% non-LON, this did not translate into improved EFS or OS.
Conclusions:
Polymorphic analysis may be a predictive tool to identify those at high risk of LON. Prospective studies are required to establish definitively if LON or FCGR3A-158V/V genotype influences outcome.
