Identification of High-Incidence Populations in the United States for anti-Epstein Barr Virus Serologic Screening for Nasopharyngeal Carcinoma.

Background: In the United States (US), Epstein-Barr Virus (EBV)-associated nasopharyngeal carcinoma (NPC) disproportionately impacts Asian Americans (AA) and Native Hawaiians and other Pacific Islanders (NHPI) who have no access to screening. EBV-based screening trials in Asia have detected most cases at early stages. We sought to identify a US target population for NPC screening and hypothesized that once-lifetime screening could be cost-effective.

Methods: We obtained NPC incidence data from the SEER Asian and Pacific Islander datasets. We estimated the number needed to screen, mortality reduction, and resource utilization using a validated model and performance data from trials. Six evaluated strategies incorporated serology, nasopharyngeal swab PCR, and endoscopy or MRI.

Results: Intermediate-incidence and high-incidence populations accounted for 10.7% of US person-years yet 42.7% of cases. Anti-BNLF2b screening with selective endoscopy was the preferred strategy. In high-incidence populations, the median NNS to detect one case was 1,992, with a median of 7.12 NPC deaths averted per 100,000 screened. Screening met the willingness-to-pay threshold in all five high-incidence populations (median ICER/GDP 0.82) and among men in intermediate-incidence populations.

Conclusions: Nearly half of NPC in the US arises among the 10% with AA or NHPI ethnicity. A suitable target population for US screening trials would be men and women age 35-65 of Chinese, Sāmoan, or Southeast Asian ethnicity, or men age 35-60 of Guamanian/Chamorro, Filipino, or Native Hawaiian ethnicity. Once-lifetime anti-BNLF2b screening could be cost-effective.

Impact: These data may aid the design of US screening trials. Targeted NPC screening might mitigate health disparities.