What experience have you had with familial clustering of polycythemia vera?

JAK2 V617F is a somatic mutation that can be acquired as early as in utero based on elegant work by Williams et al., PMID 35058638.

There is some data available regarding familial MPN predisposition syndromes and this review very nicely summarizes much of the available data (Lim et al., PMID 39316992...