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Olaptesed pegol (NOX-A12) L-oligoribonucleotide aptamer targeting CXCL12 based on a pegylated structure. Olaptesed pegol neutralizes CXCL12, and CXCL12 inhibition mobilizes chronic lymphocytic leukemia cells into the circulation and prevents their homing into the protective microenvironment[1].

[1] Steurer M, Montillo M, Scarfò L, Mauro FR, Andel J, Wildner S, Trentin L, Janssens A, Burgstaller S, Fr?mming A, Dümmler T, Riecke K, Baumann M, Beyer D, Vauléon S, Ghia P, Foà R, Caligaris-Cappio F, Gobbi M. Olaptesed pegol (NOX-A12) with bendamustine and rituximab: a phase IIa study in patients with relapsed/refractory chronic lymphocytic leukemia. Haematologica. 2019 Oct;104(10):2053-2060. DOI:10.3324/haematol.2018.205930