Mutant calreticulin: when a chaperone becomes intrusive.

Abstract excerpt

In this issue of Blood, Marty et al, Chachoua et al, and Araki et al report results of studies unraveling the molecular pathogenesis of CALR-mutant myeloproliferative neoplasms (MPNs). Together, these 3 reports define a novel disease paradigm, whereby a mutant chaperone constitutively activates receptor signaling through an abnormal interaction with the thrombopoietin (TPO) receptor (MPL).

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