[Inherited lymphoproliferative disorders]

Lymphoproliferative disorders (LPDs) are caused by dysregulated lymphocyte proliferation and include polyclonal benign and monoclonal malignant diseases. LPDs frequently occur in immunocompromized patients, particularly those with primary immunodeficiency disease (PID), a monogenic disease. PID-associated LPD corresponds to inherited LPD. Here, we describe inherited LPD and focus on IKZF1-associated diseases and Epstein-Barr virus-associated LPD, such as ZAP70 deficiency and X-linked lymphoproliferative syndrome type 1 with somatic reversion mosaicism. Disclosing the pathogenesis of inherited LPDs would lead to a broad understanding of LPDs and development of new treatment strategies.