Key finding: In a large multi-institutional study (N=1,076), 97% of asymptomatic OPSCC patients with a positive NavDx result were subsequently confirmed to have recurrent disease—NavDx detected what clinical exams and imaging had not yet found.3

Surveillance

The most common use for NavDx

  • Detect recurrence earlier with high-confidence positive results
  • Provide reassurance with high-confidence negative results

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During Treatment

 

  • TTMV-HPV DNA clearance kinetics during CRT
  • Identify molecular residual disease

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Pre-Treatment

 

  • Confirm etiology of the HPV-driven cancer
  • Identify the HPV genotype of the tumor

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A pre-treatment test is not required to use the NavDx test at other points in the care journey. Monitoring with the NavDx test can be started at any time.

  • ctHPVDNA assays exhibit higher specificity and sensitivity than conventional surveillance tools (87.9% agreement)
  • ctHPVDNA should supplement, not replace, conventional surveillance tools (84.8% agreement)
  • Serial, longitudinal testing should be performed, rather than one-time testing (87.9% agreement)
  • First post-treatment ctHPVDNA check should occur at 3 months (84.8% agreement)
  • The recommended testing cadence: every 3 months for years 1–2, every 6 months for years 3–5 post-treatment (87.9% agreement)
  • A single positive test should lead to immediate clinical exam and imaging (81.8% agreement)
  • If imaging is negative after a positive test, retest in 1 month (90.9% agreement)
  • Persistent post-treatment positivity warrants more intense imaging surveillance (93.9% agreement)
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References