Abstract
Gastroenteropancreatic neuroendocrine tumors (GEP-NETs) represent a heterogeneous
group of tumors. Current treatment algorithms for these tumors are complex and often
require a multidisciplinary approach. Recently, peptide receptor radionuclide therapy
(PRRT) was granted Food and Drug Administration approval, making this treatment widely
available in the United States. PRRT is now another therapeutic option for patients
with GEP-NETs. To date there are no consensus guidelines about how to sequence multiple
treatment options. Moreover, there is concern of potential liver toxicity when PRRT
is used before or after liver-directed therapies (LDTs). In this review, we describe
the characteristics of the most commonly used LDT and their potential interactions
with PRRT, as well as specific clinical scenarios that are relevant when deciding
on the use of LDT. We also review the limited case series that have been published
involving patients treated with different combinations of LDT and PRRT. Finally, we
discuss some of the future directions for GEP-NET treatments.
Keywords
embolization - liver-directed therapy - PRRT - hepatotoxicity