J Hematop. 2025 Jul 15;18(1):34. doi: 10.1007/s12308-025-00648-4.
ABSTRACT
Somatic IKZF1 alterations are common in B-lymphoblastic leukemia (B-ALL) and are generally associated with poor outcomes. However, rare germline missense and nonsense variants were found to predispose individuals to leukemia. We report a case of B-ALL in a female patient with a germline IKZF1 deletion. The deletion was detected with diagnostic fluorescence in situ hybridization studies and persisted after treatment at a high percentage of nuclei discordant to that of the residual disease. A chromosomal microarray analysis was subsequently performed on a peripheral blood specimen which indicated that the deletion was most likely germline in origin and was confirmed by buccal and skin fibroblast analysis. This report emphasizes the increased predisposition of leukemia for individuals who have germline deletions of IKZF1.
PMID:40663277 | DOI:10.1007/s12308-025-00648-4
