Masoud Nasri, Malte Ritter, Perihan Mir, Benjamin Dannenmann, Masako M Kaufmann, Patricia Arreba-Tutusaus, Yun Xu, Natalia Borbaran-Bravo, Maksim Klimiankou, Claudia Lengerke, Cornelia Zeidler, Toni Cathomen, Karl Welte, Julia Skokowa
Severe congenital neutropenia (CN) is an inherited pre-leukemia bone marrow failure syndrome commonly caused by autosomal-dominant ELANE mutations (ELANE-CN). ELANE-CN patients are treated with daily injections of recombinant human granulocyte colony-stimulating factor (rhG-CSF). However, some patients do not respond to rhG-CSF, and approximately 15% of ELANE-CN patients develop myelodysplasia or acute myeloid leukemia. Here, we report the development of a curative therapy for ELANE-CN through inhibition of ELANE mRNA expression by introducing two single-strand DNA breaks at the opposing DNA strands of the ELANE promoter TATA-box using CRISPR/Cas9D10A nickases - termed MILESTONE...
March 30, 2024: Molecular Therapy