PMID- 37964347 OWN - NLM STAT- MEDLINE DCOM- 20231116 LR - 20240102 IS - 1746-1596 (Electronic) IS - 1746-1596 (Linking) VI - 18 IP - 1 DP - 2023 Nov 14 TI - Detection of HHV-6 Virus in specimen of a ductal pancreatic adenocarcinoma with comparison in tumor and normal tissue. PG - 124 LID - 10.1186/s13000-023-01402-z [doi] LID - 124 AB - AIMS: The association of human herpesvirus 6 (HHV-6) species with pancreatic cancer is controversially discussed. The aim of this study was to further investigate the postulated association and to identify the basis of HHV-6 DNA positivity reported for pancreatic cancer tissue. METHODS: All samples of patients with pancreatic cancer (cancer and surrounding tissue) were analyzed for presence of HHV-6 DNA by PCR and then selected cases by immunohistochemistry. RESULTS: Sixty eight per cent (68% = 52/77) of all patients were HHV-6 DNA positive in any of the samples, 49% (38/77) were positive in tumor tissue. Specimens of just one patient were HHV-6A DNA positive, all other patients were positive for HHV-6B. Immunohistochemical analysis of HHV-6 DNA positive samples did not reveal any specific HHV-6B protein positive tumor cell. In contrast, supposed immune cells presented intra- and peritumorally expressed HHV-6B-protein. The cause of presence of these cells in the tumor stroma is unknown, as of yet. CONCLUSIONS: HHV-6 DNA-positivity of pancreatic cancer tissue described by us and others is probably not due to the infection of pancreatic cells by HHV-6, but rather due to the migration of HHV-6 positive immune cells into the pancreas. Based on our data, we suppose that there is no direct evidence for HHV-6 as a causative agent of pancreatic cancer, but further in-depth studies (including investigation of immune status of patients) are necessary to make definitive conclusions. CI - (c) 2023. The Author(s). FAU - Warkentin, S AU - Warkentin S AD - RWTH Aachen University DE, Aachen, Germany. FAU - Braunschweig, T A AU - Braunschweig TA AD - RWTH Aachen University DE, Aachen, Germany. FAU - Jonigk, D AU - Jonigk D AD - RWTH Aachen University DE, Aachen, Germany. FAU - Losen, I AU - Losen I AD - RWTH Aachen University DE, Aachen, Germany. FAU - Cassataro, M A AU - Cassataro MA AD - RWTH Aachen University DE, Aachen, Germany. FAU - Kleines, M AU - Kleines M AD - RWTH Aachen University DE, Aachen, Germany. mkleines@ukaachen.de. LA - eng PT - Journal Article DEP - 20231114 PL - England TA - Diagn Pathol JT - Diagnostic pathology JID - 101251558 RN - 0 (DNA, Viral) SB - IM MH - Humans MH - *Herpesvirus 6, Human/genetics MH - *Adenocarcinoma MH - *Roseolovirus Infections/diagnosis/genetics MH - *Pancreatic Neoplasms MH - DNA, Viral/genetics MH - *Carcinoma, Pancreatic Ductal PMC - PMC10644576 COIS- The authors declare no competing interests. EDAT- 2023/11/15 06:42 MHDA- 2023/11/16 06:44 PMCR- 2023/11/14 CRDT- 2023/11/15 00:01 PHST- 2023/08/20 00:00 [received] PHST- 2023/10/17 00:00 [accepted] PHST- 2023/11/16 06:44 [medline] PHST- 2023/11/15 06:42 [pubmed] PHST- 2023/11/15 00:01 [entrez] PHST- 2023/11/14 00:00 [pmc-release] AID - 10.1186/s13000-023-01402-z [pii] AID - 1402 [pii] AID - 10.1186/s13000-023-01402-z [doi] PST - epublish SO - Diagn Pathol. 2023 Nov 14;18(1):124. doi: 10.1186/s13000-023-01402-z.