Ichiro Takeuchi, Kanako Tanase-Nakao, Ayame Ogawa, Tohru Sugawara, Osuke Migita, Makoto Kashima, Touko Yamazaki, Akihiro Iguchi, Yasuhiro Naiki, Toru Uchiyama, Junya Tamaoki, Hiroki Maeda, Hirotaka Shimizu, Toshinao Kawai, Kosuke Taniguchi, Hiromi Hirata, Makoto Kobayashi, Kimikazu Matsumoto, Kiyoshi Naruse, Kenichiro Hata, Hidenori Akutsu, Takashi Kato, Satoshi Narumi, Katsuhiro Arai, Akira Ishiguro
DNA polymerase epsilon (Pol ε), a component of the core replisome, is involved in DNA replication. Although genetic defects of Pol ε have been reported to cause immunodeficiency syndromes, its role in haematopoiesis remains unknown. Here, we identified compound heterozygous variants (p.[Asp1131fs];[Thr1891del]) in POLE , encoding Pol ε catalytic subunit A (POLE1), in siblings with a syndromic form of severe congenital transfusion-dependent anaemia. In contrast to Diamond-Blackfan anaemia, marked reticulocytopenia or marked erythroid hypoplasia was not found...
October 13, 2023: Journal of Medical Genetics