%0 Case Reports %T Transient erythroblastopenia due to a GATA1 variant in an infant female. %A Yamashita M %A Tomoda T %A Mizuo A %A Isoda T %A Egawa M %A Yoshida M %A Toki T %A Kudo K %A Terui K %A Ito E %A Morio T %A Takagi M %J Pediatr Blood Cancer %V 71 %N 3 %D 2024 Mar 27 %M 38149846 %F 3.838 %R 10.1002/pbc.30834 %X Diamond-Blackfan anemia (DBA) is a congenital anemia with erythroid cell aplasia. Most of the causative genes are ribosomal proteins. GATA1, a hematopoietic master transcription factor required for erythropoiesis, also causes DBA. GATA1 is located on Xp11.23; therefore, DBA develops only in males in an X-linked inheritance pattern. Here, we report a case of transient erythroblastopenia and moderate anemia in a female newborn infant with a de novo GATA1 variant. In this patient, increased methylation of the GATA1 wild-type allele was observed in erythroid cells. Skewed lyonization of GATA1 may cause mild transient erythroblastopenia in a female patient.