Background: LA-NPC can be subtyped by ascending (A; T3-4N0-1), descending (D; T1-2N2-3) and ascending-descending (AD; T3-4N2-3) at diagnosis, depending on the extent of tumor spread. These phenotypes differ by prognoses, but germline and somatic molecular drivers underpinning their tumorigenesis are unknown. We aimed to validate the A and AD subtypes of LA-NPC and investigate for germline variants that are associated with them.
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