Intralesional EBV-DNA load as marker of prognosis for nasopharyngeal cancer.
Johan S NilssonOla ForslundFredrik C AnderssonMalin LindstedtLennart GreiffPublished in: Scientific reports (2019)
Nasopharyngeal cancer (NPC) is associated with the Epstein-Barr virus (EBV). The clinical presentation and prognosis of NPC is well described, but not in relation to intralesional EBV-DNA load. In a retrospective design, 48 patients with NPC were examined. Patient history was re-evaluated, and diagnostic biopsies were re-examined. Furthermore, intralesional EBV-DNA was quantitated and HPV status determined. Cancer stage, disease-free survival (DFS), and overall survival (OS) were assessed. Of the 48 patients, 36 (75%) patients featured lesions that were positive for EBER (Epstein-Barr virus-encoded small RNA) and 40 (83%) were positive for EBV-DNA. Seven patients (15%) were HPV positive. The levels of EBV-DNA ranged from 0.0005 to 94617 copies/cell. An EBV-DNA load of more than 70 copies/cell was associated with a prolonged DFS for EBV-DNA positive patients treated with curative intent (p = 0.046). In conclusion, the EBV-DNA load in NPC lesions appears to vary greatly. For patients with EBV-DNA positive NPC treated with curative intent, an EBV-DNA load of more than 70 copies/cell is associated with a better outcome in terms of 7-year DFS.
Keyphrases
- epstein barr virus
- circulating tumor
- diffuse large b cell lymphoma
- cell free
- single molecule
- end stage renal disease
- newly diagnosed
- nucleic acid
- prognostic factors
- ejection fraction
- chronic kidney disease
- single cell
- papillary thyroid
- cell therapy
- high grade
- peritoneal dialysis
- circulating tumor cells
- patient reported outcomes
- young adults
- mesenchymal stem cells
- lymph node metastasis
- childhood cancer