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Lewis JS, Naegele S, Efthymiou V, Mehrad M, Ely KA, Waterboer T, Lang Kuhs KA, Davis SJ, Richard K, Das D, Faden DL. Assessing the feasibility of a multimodal liquid biopsy for the diagnosis of HPV-associated oropharyngeal squamous cell carcinoma. Am J Clin Pathol 2024; 161:570-578. [PMID: 38349613 PMCID: PMC11144969 DOI: 10.1093/ajcp/aqad185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 12/19/2023] [Indexed: 06/04/2024] Open
Abstract
OBJECTIVES In this feasibility study, we explored the combined use of circulating tumor human papillomavirus (HPV) DNA (ctHPVDNA) and HPV serology as diagnostic tests for HPV-associated oropharyngeal squamous cell carcinoma (OPSCC). METHODS Among patients with research-banked serum or plasma at diagnosis, IgG antibodies to oncoproteins from HPV types 16, 18, 31, 33, 35, 45, 52, and 58 were detected with multiplex serology. Positivity for HPV 16 was defined based on detection of combinations of anti-E6, E1, E2, and E7 and for other high-risk types on detection of anti-E6 and anti-E7. Circulating tumor HPV DNA was detected by custom digital droplet polymerase chain reaction (ddPCR) assays for HPV types 16, 18, 33, 35, and 45. p16 immunohistochemistry and high-risk HPV RNA in situ hybridization (ISH) using a cocktail of 18 high-risk HPV types were performed on tissue. RESULTS Of 75 patients, 67 (89.3%) were HPV-associated (p16 and HPV RNA ISH positive) and 8 (10.7%) were HPV-independent. All 8 HPV-independent patients were seronegative and negative for ctHPVDNA (100% specificity). Serology was positive in 53 (79.1%) of 67 HPV-associated patients, while ddPCR was positive for ctHPVDNA in 59 (88.6%) of 67 HPV-associated patients. Requiring both tests to be positive resulted in a sensitivity of 50 (74.6%) of 67 while combining assays (either positive) improved sensitivity to 62 (92.6%) of 67. CONCLUSIONS Compared to HPV RNA ISH, HPV serology and ctHPVDNA are sensitive and highly specific biomarkers for HPV-associated OPSCC at the time of presentation.
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Affiliation(s)
- James S Lewis
- Department of Pathology, Microbiology, and Immunology and Vanderbilt University Medical Center, Nashville, TN, US
- Department of Otolaryngology–Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, TN, US
| | | | | | - Mitra Mehrad
- Department of Pathology, Microbiology, and Immunology and Vanderbilt University Medical Center, Nashville, TN, US
| | - Kim A Ely
- Department of Pathology, Microbiology, and Immunology and Vanderbilt University Medical Center, Nashville, TN, US
| | - Tim Waterboer
- Division of Infections and Cancer Epidemiology, German Cancer Research Center (DFKZ), Heidelberg, Germany
| | - Krystle A Lang Kuhs
- Department of Epidemiology and Environmental Health, College of Public Health and
- Markey Cancer Center, University of Kentucky, Lexington, KY, US
| | - Seth J Davis
- Department of Otolaryngology–Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, TN, US
| | - Kelsey Richard
- Vanderbilt University School of Medicine, Nashville, TN, US
| | | | - Daniel L Faden
- Mass Eye and Ear, Boston, MA, US
- Department of Otolaryngology–Head and Neck Surgery, Harvard Medical School, Boston, MA, US
- Broad Institute of the Massachusetts Institute of Technology and Harvard University, Cambridge, MA, US
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2
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Lakshmipathy D, Prasad A, Fritz CG, Go BC, Rajasekaran K. Accuracy of Salivary Circulating Tumor Human Papillomavirus DNA in Detecting Oropharyngeal Cancer: A Systematic Review and Meta-analysis. JAMA Otolaryngol Head Neck Surg 2024:2819304. [PMID: 38780957 PMCID: PMC11117151 DOI: 10.1001/jamaoto.2024.1067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Accepted: 03/28/2024] [Indexed: 05/25/2024]
Abstract
Importance Circulating tumor human papillomavirus DNA (ctHPV DNA) has shown potential as a biomarker capable of improving outcomes in patients with HPV-related oropharyngeal (OP) cancer. It can be isolated from plasma or saliva, with the latter offering reduced invasiveness and theoretic reduction of lead time. Objective To perform a systematic review and meta-analysis on the accuracy of salivary ctHPV DNA for detecting HPV-associated OP cancer. Data Sources Cochrane Library, Embase, PubMed, and Web of Science databases were searched from inception through October 2023. Study Selection All patients who underwent salivary ctHPV DNA testing at presentation for possible or diagnosed HPV-related OP cancer were included. Non-English and review publications were excluded. Two authors independently voted on article inclusion with a third resolving conflicting votes. Data Extraction and Synthesis Following Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) reporting guidelines, multiple authors independently abstracted data and assessed bias of included articles. Bivariate random-effects meta-analysis was performed with I2 to assess for study heterogeneity. Main Outcomes and Measures Sensitivities, specificities, positive likelihood ratios (PLR), negative likelihood ratios (NLR), and diagnostic odds ratios (DOR) with 95% CIs alongside area under the curve (AUC) of a summary receiver operating characteristic (SROC) curve were calculated. The initial analysis took place throughout December 2023. Results Of 440 initially identified articles, 6 met inclusion criteria and demonstrated moderate heterogeneity (I2 = 36%) with low risk of bias and low applicability concerns. Overall, 263 total patients were included with a median (range) age of 58 (39-86) years, and 228 (87%) were male patients. Per updated prognostic staging criteria, localized tumors (ie, stages 1 or 2) comprised most cancers at 139 (77%), whereas advanced ones (ie, stages 3 or 4) comprised the remaining 41 (23%). Pooled sensitivity, specificity, PLR, NLR, and DOR values were 64% (95% CI, 36%-85%), 89% (95% CI, 46%-99%), 11.70 (95% CI, 0.37-77.00), 1.21 (95% CI, 0.08-7.00), and 139.00 (95% CI, 0.05-837.00), respectively. The AUC of the SROC curve was 0.80. Conclusions and Relevance This study supports salivary ctHPV DNA as an acceptably specific test in detecting HPV-associated OP cancer that would benefit from testing in clinical trials prior to real-time implementation.
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Affiliation(s)
- Deepak Lakshmipathy
- Department of Otorhinolaryngology–Head & Neck Surgery, University of Pennsylvania, Philadelphia
| | - Aman Prasad
- Department of Otorhinolaryngology–Head & Neck Surgery, University of Pennsylvania, Philadelphia
| | - Christian G. Fritz
- Department of Otorhinolaryngology–Head & Neck Surgery, University of Pennsylvania, Philadelphia
| | - Beatrice C. Go
- Department of Otorhinolaryngology–Head & Neck Surgery, University of Pennsylvania, Philadelphia
| | - Karthik Rajasekaran
- Department of Otorhinolaryngology–Head & Neck Surgery, University of Pennsylvania, Philadelphia
- Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia
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3
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Earland N, Semenkovich NP, Ramirez RJ, Gerndt SP, Harris PK, Gu Z, Hearn AI, Inkman M, Szymanski JJ, Whitfield D, Wahle BM, Xu Z, Chen K, Alahi I, Ni G, Chen A, Winckler W, Zhang J, Chaudhuri AA, Zevallos JP. Sensitive MRD Detection from Lymphatic Fluid after Surgery in HPV-Associated Oropharyngeal Cancer. Clin Cancer Res 2024; 30:1409-1421. [PMID: 37939112 PMCID: PMC10982646 DOI: 10.1158/1078-0432.ccr-23-1789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 10/30/2023] [Accepted: 11/03/2023] [Indexed: 11/10/2023]
Abstract
PURPOSE Our goal was to demonstrate that lymphatic drainage fluid (lymph) has improved sensitivity in quantifying postoperative minimal residual disease (MRD) in locally advanced human papillomavirus (HPV)-associated oropharyngeal squamous cell carcinoma (OPSCC) compared with plasma, and leverage this novel biofluid for patient risk stratification. EXPERIMENTAL DESIGN We prospectively collected lymph samples from neck drains of 106 patients with HPV (+) OPSCC, along with 67 matched plasma samples, 24 hours after surgery. PCR and next-generation sequencing were used to quantify cancer-associated cell-free HPV (cf-HPV) and tumor-informed variants in lymph and plasma. Next, lymph cf-HPV and variants were compared with TNM stage, extranodal extension (ENE), and composite definitions of high-risk pathology. We then created a machine learning model, informed by lymph MRD and clinicopathologic features, to compare with progression-free survival (PFS). RESULTS Postoperative lymph was enriched with cf-HPV compared with plasma (P < 0.0001) and correlated with pN2 stage (P = 0.003), ENE (P < 0.0001), and trial-defined pathologic risk criteria (mean AUC = 0.78). In addition, the lymph mutation number and variant allele frequency were higher in pN2 ENE (+) necks than in pN1 ENE (+) (P = 0.03, P = 0.02) or pN0-N1 ENE (-) (P = 0.04, P = 0.03, respectively). The lymph MRD-informed risk model demonstrated inferior PFS in high-risk patients (AUC = 0.96, P < 0.0001). CONCLUSIONS Variant and cf-HPV quantification, performed in 24-hour postoperative lymph samples, reflects single- and multifeature high-risk pathologic criteria. Incorporating lymphatic MRD and clinicopathologic feature analysis can stratify PFS early after surgery in patients with HPV (+) head and neck cancer. See related commentary by Shannon and Iyer, p. 1223.
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Affiliation(s)
- Noah Earland
- Division of Cancer Biology, Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri
- Division of Biology and Biomedical Sciences, Washington University School of Medicine, St. Louis, Missouri
| | - Nicholas P. Semenkovich
- Division of Biology and Biomedical Sciences, Washington University School of Medicine, St. Louis, Missouri
- Division of Endocrinology, Metabolism, and Lipid Research, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Ricardo J. Ramirez
- Department of Otolaryngology-Head and Neck Surgery, Washington University School of Medicine, St. Louis, Missouri
| | - Sophie P. Gerndt
- Division of Otolaryngology-Head and Neck Surgery, Allegheny Health Network, Pittsburgh, Pennsylvania
| | - Peter K. Harris
- Division of Cancer Biology, Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri
| | - Zhuosheng Gu
- Droplet Biosciences, Inc., Cambridge, Massachusetts
| | - Andrew I. Hearn
- Department of Otolaryngology-Head and Neck Surgery, Washington University School of Medicine, St. Louis, Missouri
| | - Matthew Inkman
- Division of Cancer Biology, Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri
| | - Jeffrey J. Szymanski
- Division of Cancer Biology, Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri
| | | | - Benjamin M. Wahle
- Department of Otolaryngology-Head and Neck Surgery, Washington University School of Medicine, St. Louis, Missouri
| | - Zhongping Xu
- Department of Otolaryngology-Head and Neck Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Kevin Chen
- Division of Cancer Biology, Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri
| | - Irfan Alahi
- Division of Cancer Biology, Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri
- Department of Computer Science and Engineering, Washington University in St. Louis, St. Louis, Missouri
| | - Gabris Ni
- Division of Cancer Biology, Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri
| | - Andrew Chen
- Division of Cancer Biology, Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri
| | | | - Jin Zhang
- Division of Cancer Biology, Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri
- Division of Biology and Biomedical Sciences, Washington University School of Medicine, St. Louis, Missouri
- Siteman Cancer Center, Washington University School of Medicine, St. Louis, Missouri
| | - Aadel A. Chaudhuri
- Division of Cancer Biology, Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri
- Division of Biology and Biomedical Sciences, Washington University School of Medicine, St. Louis, Missouri
- Department of Computer Science and Engineering, Washington University in St. Louis, St. Louis, Missouri
- Siteman Cancer Center, Washington University School of Medicine, St. Louis, Missouri
- Department of Genetics, Washington University School of Medicine, St. Louis, Missouri
- Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, Missouri
| | - Jose P. Zevallos
- Department of Otolaryngology-Head and Neck Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
- Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
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Chen Z, Chan ABW, Kam LS, Chan MH, Chan JYK, Lee WT, Chow C, Boon SS, Xia C, Lam B, Lam S, Ng RWY, Ho WCS, Lam EWH, Lai CKC, Chan PKS. Changes in the Incidence and Human Papillomavirus-Positive Portion of Oropharyngeal Squamous Cell Carcinoma in Hong Kong. Cancers (Basel) 2024; 16:226. [PMID: 38201653 PMCID: PMC10778352 DOI: 10.3390/cancers16010226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/19/2023] [Accepted: 12/29/2023] [Indexed: 01/12/2024] Open
Abstract
The incidence of human papillomavirus (HPV)-associated oropharyngeal squamous cell carcinoma (OPSCC) is rising in the West, but little is known in Asia. This study elucidated changes in the incidence and HPV-positive portion of OPSCC in Hong Kong. Data from population-based cancer registry were used to analyze the incidence of OPSCC in association with other head and neck cancers. Archived tumor tissues were tested for HPV. From 1986 to 2020, there was a marked decrease in the incidence of nasopharyngeal and laryngeal cancers, but a persistent increase in OPSCC from 36 cases in 1986 to 116 cases in 2020. The average positive rate for high-risk HPV was 36.1% (112/310) among OPSCC diagnosed in 2010-2020. The HPV-positive rate in recent years was significantly higher than earlier cases (tonsil SCC: 64.7% (55/85) in 2016-2020 vs. 40.4% (19/47) in 2010-2015, p = 0.007). Patients with HPV-positive tonsil cancers were significantly younger than those negative (mean [SD]: 58.9 [9.9] vs. 64.3 [13.3] years, p = 0.006), but no significant difference was observed between genders. A persistent increase in the incidence of oropharyngeal cancer over the last few decades was observed in Hong Kong, which can be explained by the remarkable increase in HPV-positive tonsil cancers.
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Affiliation(s)
- Zigui Chen
- Department of Microbiology, The Chinese University of Hong Kong, Hong Kong SAR, China; (Z.C.); (S.S.B.); (C.X.); (R.W.Y.N.); (W.C.S.H.); (C.K.C.L.)
| | - Amy B. W. Chan
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Hong Kong SAR, China; (A.B.W.C.); (C.C.)
| | - Lok-Sang Kam
- Department of Anatomical Pathology, Tuen Mun Hospital, Hong Kong SAR, China
| | - Man-Hin Chan
- Department of ENT, Yan Chai Hospital, Hong Kong SAR, China; (M.-H.C.); (B.L.); (E.W.H.L.)
| | - Jason Y. K. Chan
- Department of Otorhinolaryngology, Head and Neck Surgery, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Wai-Tung Lee
- Department of Pathology, Queen Elizabeth Hospital, Hong Kong SAR, China;
| | - Chit Chow
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Hong Kong SAR, China; (A.B.W.C.); (C.C.)
| | - Siaw S. Boon
- Department of Microbiology, The Chinese University of Hong Kong, Hong Kong SAR, China; (Z.C.); (S.S.B.); (C.X.); (R.W.Y.N.); (W.C.S.H.); (C.K.C.L.)
| | - Chichao Xia
- Department of Microbiology, The Chinese University of Hong Kong, Hong Kong SAR, China; (Z.C.); (S.S.B.); (C.X.); (R.W.Y.N.); (W.C.S.H.); (C.K.C.L.)
| | - Brian Lam
- Department of ENT, Yan Chai Hospital, Hong Kong SAR, China; (M.-H.C.); (B.L.); (E.W.H.L.)
| | - Suki Lam
- Department of ENT, Yan Chai Hospital, Hong Kong SAR, China; (M.-H.C.); (B.L.); (E.W.H.L.)
| | - Rita W. Y. Ng
- Department of Microbiology, The Chinese University of Hong Kong, Hong Kong SAR, China; (Z.C.); (S.S.B.); (C.X.); (R.W.Y.N.); (W.C.S.H.); (C.K.C.L.)
| | - Wendy C. S. Ho
- Department of Microbiology, The Chinese University of Hong Kong, Hong Kong SAR, China; (Z.C.); (S.S.B.); (C.X.); (R.W.Y.N.); (W.C.S.H.); (C.K.C.L.)
| | - Eddy W. H. Lam
- Department of ENT, Yan Chai Hospital, Hong Kong SAR, China; (M.-H.C.); (B.L.); (E.W.H.L.)
| | - Christopher K. C. Lai
- Department of Microbiology, The Chinese University of Hong Kong, Hong Kong SAR, China; (Z.C.); (S.S.B.); (C.X.); (R.W.Y.N.); (W.C.S.H.); (C.K.C.L.)
| | - Paul K. S. Chan
- Department of Microbiology, The Chinese University of Hong Kong, Hong Kong SAR, China; (Z.C.); (S.S.B.); (C.X.); (R.W.Y.N.); (W.C.S.H.); (C.K.C.L.)
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5
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Paolini F, Campo F, Iocca O, Manciocco V, De Virgilio A, De Pascale V, Moretto S, Dalfino G, Vidiri A, Blandino G, Pimpinelli F, Venuti A, Pellini R. It is time to improve the diagnostic workup of oropharyngeal cancer with circulating tumor HPV DNA: Systematic review and meta-analysis. Head Neck 2023; 45:2945-2954. [PMID: 37715656 DOI: 10.1002/hed.27515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/30/2023] [Accepted: 08/31/2023] [Indexed: 09/18/2023] Open
Abstract
The possibility of detecting circulating tumor HPV DNA (ctHPVDNA) in plasma in patients with oropharyngeal cancer has been demonstrated in several reports. However, these data are from small cohorts and available tests for detection of ctHPVDNA are not fully validated. The aim is to evaluate sensitivity, specificity, and accuracy of ctHPVDNA by ddPCR to define its efficacy in the clinical setting for the diagnosis of HPV + OPSCC. A comprehensive search of three different databases: MEDLINE, Embase, and Cochrane Library databases. A total of 998 patients were evaluated from the 13 studies. OPSSC p16+ were 729, while controls p16- were 269. The meta-analytic study estimated the diagnostic performance of ctHPVDNA as follows: pooled sensitivity and specificity of 0.90 (95% CI: 0.82-0.94) and 0.94 (95% CI: 0.85-0.98), respectively; positive and negative likelihood ratios of 12.6 (95% CI: 4.9-32.1) and 0.05 (95% CI: 0.02-0.13), respectively. ddPCR for ctHPVDNA has good accuracy, sensitivity, and specificity for diagnosis of HPV + OPSCC. ctHPVDNA kinetic represents a great reliable opportunity to improve diagnostic and therapeutic management of cancer patients and could open new perspectives for understanding tumor biology.
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Affiliation(s)
- Francesca Paolini
- HPV-Unit, UOSD Tumor Immunology and Immunotherapy IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
- Department of Biochemical Sciences A. Rossi Fanelli, Sapienza University of Rome, Rome, Italy
| | - Flaminia Campo
- Department of Otolaryngology-Head and Neck Surgery, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Oreste Iocca
- Division of Maxillofacial Surgery, Surgical Science Department, University of Torino, Torino, Italy
| | - Valentina Manciocco
- HPV-Unit, UOSD Tumor Immunology and Immunotherapy IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Armando De Virgilio
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
- Otorhinolaryngology Unit, IRCCS Humanitas Research Hospital, Milan, Italy
| | - Valentina De Pascale
- Translational oncologic research, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Silvia Moretto
- Department of Otolaryngology-Head and Neck Surgery, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Gianluca Dalfino
- Department of Otolaryngology-Head and Neck Surgery, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Antonello Vidiri
- Department of Radiology and Diagnostic Imaging, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Giovanni Blandino
- Oncogenomic and Epigenetic Unit, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Fulvia Pimpinelli
- Department of Microbiology and Virology, IRCCS San Gallicano Dermatological Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Aldo Venuti
- HPV-Unit, UOSD Tumor Immunology and Immunotherapy IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Raul Pellini
- Department of Otolaryngology-Head and Neck Surgery, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
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6
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Thangarajah F, Busshoff J, Salamon J, Pruss MS, Lenz C, Morgenstern B, Hellmich M, Schlößer HA, Lenz M, Domröse C, Mallmann MR, Mallmann P, Weiß J, Franzen F, Merkelbach-Bruse S, Binot E, Eich ML, Büttner R, Schultheis AM, Alidousty C. Digital droplet PCR-based quantification of ccfHPV-DNA as liquid biopsy in HPV-driven cervical and vulvar cancer. J Cancer Res Clin Oncol 2023; 149:12597-12604. [PMID: 37452202 PMCID: PMC10587338 DOI: 10.1007/s00432-023-05077-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 06/29/2023] [Indexed: 07/18/2023]
Abstract
PURPOSE More than 99% of cervical cancers and up to 40% of vulvar cancers are human papillomavirus (HPV) related. HPV 16 and 18 are the most relevant subtypes. Novel technologies allow the detection of minimal amounts of circulating cell-free HPV DNA (ccfHPV-DNA). The aim of this study was to evaluate ccfHPV-DNA assessed by droplet digital PCR (ddPCR) as a biomarker for molecular therapy monitoring in early, advanced, relapsed and metastatic HPV-driven cervical and vulvar cancer. METHODS Inclusion criteria of the study were histologically proven HPV 16/18-driven cervical and vulvar cancer with first diagnosed disease, newly diagnosed recurrence, or progression of disease. Blood samples were taken pre- and post-therapeutically. Circulating cell-free HPV DNA was quantified using ddPCR and the results were correlated with clinical data. RESULTS The mean copy number of ccfHPV-DNA was 838.6 (± 3089.1) in pretreatment and 2.3 (± 6.4) in post-treatment samples (p < 0.05). The copy number of ccfHPV-DNA increased with higher FIGO stages (p < 0.05), which are commonly used for clinical staging/assessment. Furthermore, we compared the distribution of copy numbers between T-stage 1 versus T-stage 2/3. We could show higher copy number level of ccfHPV-DNA in T-stage 2/3 (p < 0.05). CONCLUSIONS Therapy monitoring with determination of ccfHPV-DNA by ddPCR with a small amount of plasma reflects response to therapy and appears feasible for patients in advanced cancer stages of cervical and vulvar cancer. This promising tool should be examined as marker of therapy monitoring in particular in novel HPV-directed therapies.
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Affiliation(s)
- Fabinshy Thangarajah
- Department of Gynecology and Obstetrics, University Hospital of Essen, University of Duisburg Essen, Faculty of Medicine, Essen, Germany.
- Department of Obstetrics and Gynecology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany.
| | - Jana Busshoff
- Department of Obstetrics and Gynecology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Janina Salamon
- Department of Obstetrics and Gynecology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Marie-Sandrine Pruss
- Department of Obstetrics and Gynecology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Caroline Lenz
- Department of Obstetrics and Gynecology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Bernd Morgenstern
- Department of Obstetrics and Gynecology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Martin Hellmich
- Institute of Medical Statistics, Informatics and Epidemiology, University of Cologne, Cologne, Germany
| | - Hans Anton Schlößer
- Center for Molecular Medicine Cologne and Department of General, Visceral and Cancer Surgery, University Hospital of Cologne, Medical Faculty, Cologne, Germany
| | - Maximilian Lenz
- Department for Orthopaedic and Trauma Surgery, University Hospital of Cologne, Medical Faculty, Cologne, Germany
| | - Christian Domröse
- Department of Obstetrics and Gynecology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Michael R Mallmann
- Department of Obstetrics and Gynecology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Peter Mallmann
- Department of Obstetrics and Gynecology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Jonathan Weiß
- Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, University Hospital of Cologne, Medical Faculty, Cologne, Germany
| | - Fabian Franzen
- Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, University Hospital of Cologne, Medical Faculty, Cologne, Germany
| | | | - Elke Binot
- Institute of Pathology, University Hospital of Cologne, Medical Faculty, Cologne, Germany
| | - Marie-Lisa Eich
- Institute of Pathology, University Hospital of Cologne, Medical Faculty, Cologne, Germany
| | - Reinhardt Büttner
- Institute of Pathology, University Hospital of Cologne, Medical Faculty, Cologne, Germany
| | - Anne Maria Schultheis
- Institute of Pathology, University Hospital of Cologne, Medical Faculty, Cologne, Germany.
| | - Christina Alidousty
- Institute of Pathology, University Hospital of Cologne, Medical Faculty, Cologne, Germany
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7
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Ferrandino RM, Chen S, Kappauf C, Barlow J, Gold BS, Berger MH, Westra WH, Teng MS, Khan MN, Posner MR, Misiukiewicz KJ, Bakst RL, Sindhu KK, Genden EM, Chai RL, Roof SA. Performance of Liquid Biopsy for Diagnosis and Surveillance of Human Papillomavirus-Associated Oropharyngeal Cancer. JAMA Otolaryngol Head Neck Surg 2023; 149:971-977. [PMID: 37422913 PMCID: PMC10331620 DOI: 10.1001/jamaoto.2023.1937] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 06/05/2023] [Indexed: 07/11/2023]
Abstract
Importance There is growing interest in the use of circulating plasma tumor human papillomavirus (HPV) DNA for diagnosis and surveillance of patients with HPV-associated oropharyngeal squamous cell carcinoma (OPSCC). Recent advances in the assays, combining the identification of circulating HPV tumor DNA and tumor DNA fragment analysis (tumor tissue-modified viral [TTMV]-HPV DNA), have been shown to be highly accurate. However, use of these newer techniques has been limited to small cohort studies and clinical trials. Objective To establish the clinical efficacy of plasma TTMV-HPV DNA testing in the diagnosis and surveillance of HPV-associated OPSCC in a contemporary clinical setting. Design, Setting, and Participants This retrospective observational cohort study included patients with OPSCC who underwent TTMV-HPV DNA testing between April 2020 and September 2022 during the course of routine clinical care. For the diagnosis cohort, patients with at least 1 TTMV-HPV DNA measurement prior to initiation of primary therapy were included. Patients were included in the surveillance cohort if they had at least 1 TTMV-HPV DNA test performed after completion of definitive or salvage therapy. Main Outcomes and Measures Per-test performance metrics, including sensitivity, specificity, positive predictive value, and negative predictive value, for TTMV-HPV DNA testing. Results Of 399 patients included in the analysis, 163 were in the diagnostic cohort (median [IQR] age, 63 [56-68.5] years; 142 [87.1%] male), and 290 were in the surveillance cohort (median [IQR] age, 63 [57-70] years; 237 [81.7%] male). Of the 163 patients in the diagnostic cohort, 152 (93.3%) had HPV-associated OPSCC while 11 (6.7%) had HPV-negative OPSCC. The TTMV-HPV DNA sensitivity in pretreatment diagnosis was 91.5% (95% CI, 85.8%-95.4% [139 of 152 tests]), and the specificity was 100% (95% CI, 71.5%-100% [11 of 11 tests]). In the surveillance cohort, 591 tests conducted in 290 patients were evaluated. A total of 23 patients had molecularly confirmed pathologic recurrences. The TTMV-HPV DNA test demonstrated sensitivity of 88.4% (95% CI, 74.9%-96.1% [38 of 43 tests]) and specificity of 100% (95% CI, 99.3%-100% [548 of 548 tests]) in detecting the recurrences. Positive predictive value was 100% (95% CI, 90.7%-100% [38 of 38 tests]), and negative predictive value was 99.1% (95% CI, 97.9%-99.7% [548 of 553 tests]). The median (range) lead time from positive TTMV-HPV DNA test to pathologic confirmation was 47 (0-507) days. Conclusions and Relevance This cohort study demonstrated that when evaluated in a clinical setting, the TTMV-HPV DNA assay demonstrated 100% specificity in both diagnosis and surveillance. However, the sensitivity was 91.5% for the diagnosis cohort and 88.4% for the surveillance cohort, signifying that nearly 1 in 10 negative tests among patients with HPV-associated OPSCC was a false negative. Additional research is required to validate the assay's performance and, if validated, then further research into the implementation of this assay into standard clinical practice guidelines will be required.
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Affiliation(s)
- Rocco M. Ferrandino
- Department of Otolaryngology–Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Sida Chen
- Department of Otolaryngology–Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Catharine Kappauf
- Department of Otolaryngology–Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Joshua Barlow
- Department of Otolaryngology–Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Brandon S. Gold
- Department of Otolaryngology–Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Michael H. Berger
- Department of Otolaryngology–Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - William H. Westra
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Marita S. Teng
- Department of Otolaryngology–Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Mohemmed N. Khan
- Department of Otolaryngology–Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Marshall R. Posner
- Department of Hematology/Oncology, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Krzysztof J. Misiukiewicz
- Department of Hematology/Oncology, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Richard L. Bakst
- Department of Radiation Oncology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Kunal K. Sindhu
- Department of Radiation Oncology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Eric M. Genden
- Department of Otolaryngology–Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Raymond L. Chai
- Department of Otolaryngology–Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Scott A. Roof
- Department of Otolaryngology–Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
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8
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Wuerdemann N, Joosse S, Klasen C, Prinz J, Demers I, George J, Speel EJM, Wagner S, Klußmann JP. [ctHPV-DNA based precision oncology for patients with oropharyngeal cancer - Where are we?]. Laryngorhinootologie 2023; 102:728-734. [PMID: 37364603 DOI: 10.1055/a-2092-3837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Human papillomavirus (HPV) is an established etiologic factor for cancers in the head and neck region, specifically for Oropharyngeal Squamous Cell Carcinoma (OPSCC). The comparatively good overall survival justifies the current discussion regarding therapy de-escalation for patients with a low-risk profile. In addition to the immunohistochemistry-based biomarker p16INK4a, there is still a need for diagnostic and prognostic biomarkers that allow risk stratification and monitoring during therapy and follow-up of these patients. In recent years, liquid biopsy, especially in the form of plasma samples, has gained importance and is already used to monitor viral DNA in patients with Epstein-Barr virus-associated nasopharyngeal carcinoma. Circulating DNA (ctDNA) released by the tumor into the bloodstream is particularly suitable for a high specificity in detecting virus-associated tumors. Detection of viral E6 and E7 oncogenes in HPV-positive OPSCC is predominantly performed by droplet digital/quantitative PCR as well as next generation sequencing. Detection of circulating HPV-DNA derived from tumor cells (ctHPV-DNA) at diagnosis is associated with advanced tumor stage, locoregional and distant metastases. Longitudinal studies have further demonstrated that detectable and/or increasing ctHPV-DNA levels are associated with treatment failure and disease relapse. However, a standardization of the diagnostic procedure is necessary before introducing liquid biopsy into the clinical routine. In the future, this might allow a valid reflection of disease progression in HPV-positive OPSCC.
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Affiliation(s)
- Nora Wuerdemann
- Klinik für Hals-, Nasen-, Ohrenheilkunde, Kopf- und Halschirurgie, Uniklinik Köln, Köln, Deutschland
- Klinik für Innere Medizin I, Uniklinik Köln, Köln, Deutschland
| | - Simon Joosse
- Abteilung für Tumorbiologie, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Deutschland
| | - Charlotte Klasen
- Klinik für Hals-, Nasen-, Ohrenheilkunde, Kopf- und Halschirurgie, Uniklinik Köln, Köln, Deutschland
| | - Johanna Prinz
- Klinik für Innere Medizin I, Uniklinik Köln, Köln, Deutschland
| | - Imke Demers
- Institut für Pathologie, Maastricht Universität, GROW-School für Onkologie und Entwicklungsbiologie, Maastricht, Niederlande
| | - Julie George
- Klinik für Hals-, Nasen-, Ohrenheilkunde, Kopf- und Halschirurgie, Uniklinik Köln, Köln, Deutschland
| | - Ernst-Jan Maria Speel
- Institut für Pathologie, Maastricht Universität, GROW-School für Onkologie und Entwicklungsbiologie, Maastricht, Niederlande
- GROW-School für Onkologie und Entwicklungsbiologie, Institut für Pathologie, Maastricht Universität, Maastricht, Niederlande
| | - Steffen Wagner
- Klinik für Hals-, Nasen-, Ohrenheilkunde, Kopf- und Halschirurgie, Justus-Liebig-Universität Gießen, Gießen, Deutschland
| | - Jens Peter Klußmann
- Klinik für Hals-, Nasen-, Ohrenheilkunde, Kopf- und Halschirurgie, Uniklinik Köln, Köln, Deutschland
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9
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Jaradi B, Das T, Koo KM. Design and Analytical Evaluation of a Rapid Plasma Screening Assay for Circulating Human Papillomavirus DNA via Thermostable Enzyme Chemistries. Anal Chem 2023; 95:11172-11180. [PMID: 37441723 DOI: 10.1021/acs.analchem.3c02528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/15/2023]
Abstract
Infection with oncogenic strains of human papillomavirus (HPV), such as HPV-16 and HPV-18, can lead to malignant progression and tumorigenesis. As an adjunct to traditional invasive tissue sampling methods, the use of modern thermostable enzyme chemistries can aid in the development of innovative assay workflows to extract and detect circulating HPV DNA (cHPV-DNA) in liquid biopsies. In this work, we first successfully generated a model system to replicate fragmented cHPV-DNA in human plasma. Using this model system, we designed a novel thermostable enzyme chemistry-based cHPV-DNA assay for rapid clinical HPV screening and robustly evaluated its analytical assay performance. Our findings demonstrated that the use of thermostable enzymes provided faster cHPV-DNA extraction and amplification, leading to an overall three-fold improvement in overall assay time as compared to the current standard assay workflow and achieving clinically relevant levels of analytical specificity, sensitivity, and precision for accurate cHPV-DNA detection with excellent 100% sensitivity and specificity in contrived human plasma specimens. In summary, we have devised a rapid laboratory workflow to facilitate the emerging use of liquid biopsies for minimally invasive, rapid, and scalable HPV DNA testing. With facile assay modifications, our thermostable enzyme-based cHPV-DNA assay can be utilized for the detection of other clinically high-risk HPV genotypes.
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Affiliation(s)
- Binny Jaradi
- XING Applied Research & Assay Development (XARAD) Division, XING Technologies Pty Ltd, Brisbane, Queensland 4073, Australia
| | - Tulika Das
- XING Applied Research & Assay Development (XARAD) Division, XING Technologies Pty Ltd, Brisbane, Queensland 4073, Australia
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Kevin M Koo
- XING Applied Research & Assay Development (XARAD) Division, XING Technologies Pty Ltd, Brisbane, Queensland 4073, Australia
- The University of Queensland Centre for Clinical Research (UQCCR), Herston, Queensland 4029, Australia
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10
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Extracellular Vesicles as Biomarkers in Head and Neck Squamous Cell Carcinoma: From Diagnosis to Disease-Free Survival. Cancers (Basel) 2023; 15:cancers15061826. [PMID: 36980712 PMCID: PMC10046514 DOI: 10.3390/cancers15061826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 03/14/2023] [Accepted: 03/15/2023] [Indexed: 03/22/2023] Open
Abstract
Head and neck squamous cell carcinomas (HNSCCs) arising from different anatomical sites present with different incidences and characteristics, which requires a personalized treatment strategy. Despite the extensive research that has conducted on this malignancy, HNSCC still has a poor overall survival rate. Many attempts have been made to improve the outcomes, but one of the bottlenecks is thought to be the lack of an effective biomarker with high sensitivity and specificity. Extracellular vesicles (EVs) are secreted by various cells and participate in a great number of intercellular communications. Based on liquid biopsy, EV detection in several biofluids, such as blood, saliva, and urine, has been applied to identify the existence and progression of a variety of cancers. In HNSCC, tumor-derived EVs exhibit many functionalities by transporting diverse cargoes, which highlights their importance in tumor screening, the determination of multidisciplinary therapy, prediction of prognosis, and evaluation of therapeutic effects. This review illustrates the classification and formation of EV subtypes, the cargoes conveyed by these vesicles, and their respective functions in HNSCC cancer biology, and discloses their potential as biomarkers during the whole process of tumor diagnosis, treatment, and follow-up.
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11
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Practical Application of Circulating Tumor-Related DNA of Human Papillomavirus in Liquid Biopsy to Evaluate the Molecular Response in Patients with Oropharyngeal Cancer. Cancers (Basel) 2023; 15:cancers15041047. [PMID: 36831390 PMCID: PMC9953792 DOI: 10.3390/cancers15041047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 01/31/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
Recent findings have shown that human papillomavirus (HPV) DNA is present in the blood as a tumor-specific biomarker (circulating tumor-related HPV; ctHPV) in patients with HPV-related oropharyngeal cancer (HPV-related OPC). The molecular response (MR) in patients with HPV-related OPC can be defined as the change in the number of ctHPV copies in relation to its initial quantity. The optimal model for assessing the MR using a liquid biopsy (LB) should be based on the E6/E7 sequences of the viral genome. MR assessment can help to evaluate the intensity of ongoing treatments in relation to the tumor response. The evaluation of the residual disease at the end of therapy may also be performed by MR assessment. If a partial MR (pMR) is found, caution is indicated and a subsequent LB should be considered, due to the likelihood of disease progression. Complete radiological and clinical responses together with a complete MR (cMR) convincingly indicate a low risk of treatment failure. Moreover, molecular recurrence (Mrec) during a follow-up, confirmed in two consecutive assays, even despite the lack of any other clinical or radiological symptoms of progression, indicates patients at high risk of disease recurrence. In conclusion, MR by ctHPV assessment may hasten the early detection of disease progression, at any stage of the management of the patient with HPV-related OPC.
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12
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Kori M, Arga KY. Human oncogenic viruses: an overview of protein biomarkers in viral cancers and their potential use in clinics. Expert Rev Anticancer Ther 2022; 22:1211-1224. [PMID: 36270027 DOI: 10.1080/14737140.2022.2139681] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
INTRODUCTION Although the idea that carcinogenesis might be caused by viruses was first voiced about 100 years ago, today's data disappointingly show that we have not made much progress in preventing and/or treating viral cancers in a century. According to recent studies, infections are responsible for approximately 13% of cancer development in the world. Today, it is accepted and proven by many authorities that Epstein-Barr virus (EBV), Hepatitis B virus (HBV), Hepatitis C virus (HCV), Human Herpesvirus 8 (HHV8), Human T-cell Lymphotropic virus 1 (HTLV1) and highly oncogenic Human Papillomaviruses (HPVs) cause or/and contribute to cancer development in humans. AREAS COVERED Considering the insufficient prevention and/or treatment strategies for viral cancers, in this review we present the current knowledge on protein biomarkers of oncogenic viruses. In addition, we aimed to decipher their potential for clinical use by evaluating whether the proposed biomarkers are expressed in body fluids, are druggable, and act as tumor suppressors or oncoproteins. EXPERT OPINION Consequently, we believe that this review will shed light on researchers and provide a guide to find remarkable solutions for the prevention and/or treatment of viral cancers.
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Affiliation(s)
- Medi Kori
- Department of Bioengineering, Faculty of Engineering, Marmara University, Istanbul, Turkey
| | - Kazim Yalcin Arga
- Department of Bioengineering, Faculty of Engineering, Marmara University, Istanbul, Turkey.,Genetic and Metabolic Diseases Research and Investigation Center (GEMHAM), Marmara University, Istanbul, Turkey
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13
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New Perspectives on the Importance of Cell-Free DNA Biology. Diagnostics (Basel) 2022; 12:diagnostics12092147. [PMID: 36140548 PMCID: PMC9497998 DOI: 10.3390/diagnostics12092147] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 08/24/2022] [Accepted: 08/31/2022] [Indexed: 11/28/2022] Open
Abstract
Body fluids are constantly replenished with a population of genetically diverse cell-free DNA (cfDNA) fragments, representing a vast reservoir of information reflecting real-time changes in the host and metagenome. As many body fluids can be collected non-invasively in a one-off and serial fashion, this reservoir can be tapped to develop assays for the diagnosis, prognosis, and monitoring of wide-ranging pathologies, such as solid tumors, fetal genetic abnormalities, rejected organ transplants, infections, and potentially many others. The translation of cfDNA research into useful clinical tests is gaining momentum, with recent progress being driven by rapidly evolving preanalytical and analytical procedures, integrated bioinformatics, and machine learning algorithms. Yet, despite these spectacular advances, cfDNA remains a very challenging analyte due to its immense heterogeneity and fluctuation in vivo. It is increasingly recognized that high-fidelity reconstruction of the information stored in cfDNA, and in turn the development of tests that are fit for clinical roll-out, requires a much deeper understanding of both the physico-chemical features of cfDNA and the biological, physiological, lifestyle, and environmental factors that modulate it. This is a daunting task, but with significant upsides. In this review we showed how expanded knowledge on cfDNA biology and faithful reverse-engineering of cfDNA samples promises to (i) augment the sensitivity and specificity of existing cfDNA assays; (ii) expand the repertoire of disease-specific cfDNA markers, thereby leading to the development of increasingly powerful assays; (iii) reshape personal molecular medicine; and (iv) have an unprecedented impact on genetics research.
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14
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Joosse SA, Pantel K. Detection of Hypomethylation in Long-ctDNA. Clin Chem 2022; 68:1115-1117. [DOI: 10.1093/clinchem/hvac108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 06/17/2022] [Indexed: 11/14/2022]
Affiliation(s)
- Simon A Joosse
- Department of Tumor Biology, University Medical Center Hamburg–Eppendorf , Hamburg , Germany
- Mildred Scheel Cancer Career Center HaTriCS4, University Medical Center Hamburg–Eppendorf , Hamburg , Germany
| | - Klaus Pantel
- Department of Tumor Biology, University Medical Center Hamburg–Eppendorf , Hamburg , Germany
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15
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Galati L, Combes JD, Le Calvez-Kelm F, McKay-Chopin S, Forey N, Ratel M, McKay J, Waterboer T, Schroeder L, Clifford G, Tommasino M, Gheit T. Detection of Circulating HPV16 DNA as a Biomarker for Cervical Cancer by a Bead-Based HPV Genotyping Assay. Microbiol Spectr 2022; 10:e0148021. [PMID: 35225653 PMCID: PMC9045285 DOI: 10.1128/spectrum.01480-21] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 02/04/2022] [Indexed: 12/14/2022] Open
Abstract
Human papillomavirus (HPV) circulating tumor DNA (HPV ctDNA) was proposed as a biomarker for the detection and disease monitoring of HPV-related cancers. One hundred eighty plasma samples obtained from women diagnosed with HPV16-positive cervical cancer (CC) (n = 100), HPV16-positive premalignant lesions (cervical intraepithelial neoplasia grade 3 [CIN3]) (n = 20), and HPV DNA-negative controls (n = 60) were randomly selected from the archives for evaluating the performance of a bead-based HPV genotyping assay (E7 type-specific multiplex genotyping assay [E7-MPG]) in detecting HPV16 ctDNA. The performance of the E7-MPG was compared with those of DNA detection by droplet digital PCR (ddPCR) and detection of HPV16 E6 antibodies evaluated in an independent study. Internal controls to assess DNA quality were included in the molecular assays, i.e., beta-globin and ESR1, respectively. The sensitivity and specificity of E7-MPG and/or E6 antibodies to detect HPV16-positive CCs were evaluated. HPV16 ctDNA was detected using the E7-MPG in 42.3% of all plasma samples and in 74.7% of plasma samples from HPV16-positive CC cases. The validation of E7-MPG data by ddPCR showed that the sensitivity of the E7-MPG test for HPV16-positive CC detection was higher than that of ddPCR (74.7% versus 63.1%; P < 0.001). When both HPV16 ctDNA and E6 antibodies were considered, the sensitivity for HPV16-positive CC detection increased from 74.7% to 86.1%, while the specificity was unchanged at 97.8%. The performance of E7-MPG for the detection of HPV16 ctDNA appears to be at least as sensitive as that of ddPCR, offering an additional tool for ctDNA detection of HPV16-positive CC. The use of an additional blood marker of HPV infection, such as E6 antibodies, further improved the detection of CC. IMPORTANCE The validity of HPV ctDNA as a marker of HPV-driven cancers has been previously reported. Herein we validated an alternative to ddPCR for HPV16 ctDNA detection, using a bead-based HPV genotyping assay that offers the potential advantage of reducing the cost of clinical management due to the multiplex capability of the test, thus facilitating its use in clinical settings. In addition, we analyzed HPV ctDNA in the context of E6 antibodies as an additional HPV marker. The HPV16 ctDNA biomarker appeared to be highly specific and, to a lesser extent, sensitive for the detection of CC, mainly indicated for those at an advanced tumor stage. In this proof-of-principle study, E6 antibodies were mainly detected in early tumor stages of CC, while HPV ctDNA was mainly positive at advanced tumor stages.
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Affiliation(s)
- Luisa Galati
- International Agency for Research on Cancer, Lyon, France
| | | | | | | | - Nathalie Forey
- International Agency for Research on Cancer, Lyon, France
| | - Mathis Ratel
- International Agency for Research on Cancer, Lyon, France
| | - James McKay
- International Agency for Research on Cancer, Lyon, France
| | - Tim Waterboer
- Infections and Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Lea Schroeder
- Infections and Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Gary Clifford
- International Agency for Research on Cancer, Lyon, France
| | | | - Tarik Gheit
- International Agency for Research on Cancer, Lyon, France
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16
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PET/Computed Tomography. PET Clin 2022; 17:319-326. [DOI: 10.1016/j.cpet.2021.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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Mishra V, Singh A, Chen X, Rosenberg AJ, Pearson AT, Zhavoronkov A, Savage PA, Lingen MW, Agrawal N, Izumchenko E. Application of liquid biopsy as multi-functional biomarkers in head and neck cancer. Br J Cancer 2022; 126:361-370. [PMID: 34876674 PMCID: PMC8810877 DOI: 10.1038/s41416-021-01626-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 10/25/2021] [Accepted: 11/01/2021] [Indexed: 02/06/2023] Open
Abstract
Head and neck squamous cell carcinoma (HNSCC) is a molecularly heterogeneous disease, with a 5-year survival rate that still hovers at ~60% despite recent advancements. The advanced stage upon diagnosis, limited success with effective targeted therapy and lack of reliable biomarkers are among the key factors underlying the marginally improved survival rates over the decades. Prevention, early detection and biomarker-driven treatment adaptation are crucial for timely interventions and improved clinical outcomes. Liquid biopsy, analysis of tumour-specific biomarkers circulating in bodily fluids, is a rapidly evolving field that may play a striking role in optimising patient care. In recent years, significant progress has been made towards advancing liquid biopsies for non-invasive early cancer detection, prognosis, treatment adaptation, monitoring of residual disease and surveillance of recurrence. While these emerging technologies have immense potential to improve patient survival, numerous methodological and biological limitations must be overcome before their implementation into clinical practice. This review outlines the current state of knowledge on various types of liquid biopsies in HNSCC, and their potential applications for diagnosis, prognosis, grading treatment response and post-treatment surveillance. It also discusses challenges associated with the clinical applicability of liquid biopsies and prospects of the optimised approaches in the management of HNSCC.
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Affiliation(s)
- Vasudha Mishra
- Department of Medicine, Section of Hematology and Oncology, University of Chicago, Chicago, IL, USA
| | - Alka Singh
- Department of Medicine, Section of Hematology and Oncology, University of Chicago, Chicago, IL, USA
| | - Xiangying Chen
- Department of Medicine, Section of Hematology and Oncology, University of Chicago, Chicago, IL, USA
| | - Ari J Rosenberg
- Department of Medicine, Section of Hematology and Oncology, University of Chicago, Chicago, IL, USA
| | - Alexander T Pearson
- Department of Medicine, Section of Hematology and Oncology, University of Chicago, Chicago, IL, USA
| | | | - Peter A Savage
- Department of Pathology, University of Chicago, Chicago, IL, USA
| | - Mark W Lingen
- Department of Pathology, University of Chicago, Chicago, IL, USA
| | - Nishant Agrawal
- Department of Surgery, Section of Otolaryngology-Head and Neck Surgery, University of Chicago, Chicago, IL, USA.
| | - Evgeny Izumchenko
- Department of Medicine, Section of Hematology and Oncology, University of Chicago, Chicago, IL, USA.
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18
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Pilar A, O’Sullivan B, Huang SH. Risk Stratification of HPV-Associated Oropharyngeal Squamous Cell Carcinoma: Are All Tumors Created Equally? CURRENT OTORHINOLARYNGOLOGY REPORTS 2022. [DOI: 10.1007/s40136-021-00382-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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19
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Faden DL. Liquid biopsy for the diagnosis of HPV-associated head and neck cancer. Cancer Cytopathol 2022; 130:12-15. [PMID: 34375020 PMCID: PMC10091195 DOI: 10.1002/cncy.22497] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/14/2021] [Accepted: 07/15/2021] [Indexed: 02/02/2023]
Affiliation(s)
- Daniel L Faden
- Department of Otolaryngology-Head and Neck Surgery, Mass Eye and Ear, Boston, Massachusetts.,Massachusetts General Hospital, Boston, Massachusetts.,Harvard Medical School, Boston, Massachusetts.,Broad Institute of MIT and Harvard, Cambridge, Massachusetts
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20
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Jakobsen KK, Carlander ALF, Bendtsen SK, Garset-Zamani M, Lynggaard CD, Grønhøj C, von Buchwald C. Diagnostic Accuracy of HPV Detection in Patients with Oropharyngeal Squamous Cell Carcinomas: A Systematic Review and Meta-Analysis. Viruses 2021; 13:1692. [PMID: 34578274 PMCID: PMC8473001 DOI: 10.3390/v13091692] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 08/02/2021] [Accepted: 08/24/2021] [Indexed: 12/23/2022] Open
Abstract
The aim of the study was to evaluate the diagnostic accuracy of Human Papillomavirus (HPV) techniques in oropharyngeal cancer. PubMed, EMBASE, the Cochrane Library and clinicaltrials.org were systematically searched for studies reporting methods of HPV detection. Primary outcomes were sensitivity and specificity of HPV detection. In this case, 27 studies were included (n = 5488, 41.6% HPV+). In this case, 13 studies evaluated HPV detection in tumour tissue, nine studies examined HPV detection in blood samples and five studies evaluated HPV detection in oral samples. Accuracy of HPV detection in tumour tissue was high for all detection methods, with pooled sensitivity ranging from 81.1% (95% CI 71.9-87.8) to 93.1% (95% CI 87.4-96.4) and specificity ranging from 81.1% (95% CI 71.9-87.8) to 94.9% (95% CI 79.1-98.9) depending on detection methods. Overall accuracy of HPV detection in blood samples revealed a sensitivity of 81.4% (95% CI 62.9-91.9) and a specificity of 94.8% (95% CI 91.4-96.9). In oral samples pooled sensitivity and specificity were lower (77.0% (95% CI 68.8-83.6) and 74.0% (95% CI 58.0-85.4)). In conclusion, we found an overall high accuracy for HPV detection in tumour tissue regardless of the HPV detection method used. HPV detection in blood samples may provide a promising new way of HPV detection.
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Affiliation(s)
- Kathrine Kronberg Jakobsen
- Department of Otorhinolaryngology, Head and Neck Surgery and Audiology, Rigshospitalet, University Hospital of Copenhagen, 2100 København, Denmark; (A.-L.F.C.); (S.K.B.); (M.G.-Z.); (C.D.L.); (C.G.); (C.v.B.)
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21
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Causes and Consequences of HPV Integration in Head and Neck Squamous Cell Carcinomas: State of the Art. Cancers (Basel) 2021; 13:cancers13164089. [PMID: 34439243 PMCID: PMC8394665 DOI: 10.3390/cancers13164089] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/10/2021] [Accepted: 08/11/2021] [Indexed: 12/29/2022] Open
Abstract
A constantly increasing incidence in high-risk Human Papillomaviruses (HPV)s driven head and neck squamous cell carcinomas (HNSCC)s, especially of oropharyngeal origin, is being observed. During persistent infections, viral DNA integration into the host genome may occur. Studies are examining if the physical status of the virus (episomal vs. integration) affects carcinogenesis and eventually has further-reaching consequences on disease progression and outcome. Here, we review the literature of the most recent five years focusing on the impact of HPV integration in HNSCCs, covering aspects of detection techniques used (from PCR up to NGS approaches), integration loci identified, and associations with genomic and clinical data. The consequences of HPV integration in the human genome, including the methylation status and deregulation of genes involved in cell signaling pathways, immune evasion, and response to therapy, are also summarized.
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22
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Campo F, Zocchi J, Moretto S, Mazzola F, Petruzzi G, Donà MG, Benevolo M, Iocca O, De Virgilio A, Pichi B, Manciocco V, Pellini R. Cell-Free Human Papillomavirus-DNA for Monitoring Treatment Response of Head and Neck Squamous Cell Carcinoma: Systematic Review and Meta-Analysis. Laryngoscope 2021; 132:560-568. [PMID: 34236084 DOI: 10.1002/lary.29739] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 06/22/2021] [Accepted: 06/26/2021] [Indexed: 11/09/2022]
Abstract
OBJECTIVES/HYPOTHESIS The aim of this study was to assess the value of cell-free human papillomavirus-DNA (cfHPV-DNA) as a diagnostic test for the post-treatment surveillance of patients with HPV-positive head and neck squamous cell carcinoma (HNSCC) through a systematic review and meta-analysis. STUDY DESIGN Systematic review and meta-analysis. METHODS A literature search was conducted in three databases (MEDLINE, Embase, and Scopus) in January 2021. The population included patients with HPV-positive HNSCC. The intervention was the use of the repeated liquid biopsy with circulating HPV-DNA detection during follow-up. The outcome was to establish the value of cfHPV-DNA as a diagnostic test for the post-treatment surveillance of patients with HPV-positive HNSCC. RESULTS Ten studies included in the meta-analysis provided a total of 457 patients with HPV-positive HNSCC. The meta-analytic study estimated the diagnostic performance of cfHPV-DNA as follows: pooled sensitivity and specificity of 0.65 (95% confidence interval [CI]: 0.40-0.84) and 0.99 (99% CI: 0.96-0.99), respectively; positive and negative likelihood ratios of 62.5 (99% CI: 22.9-170.2) and 0.05 (99% CI: 0.013-0.24), respectively; and pooled diagnostic odds ratio of 371.66 (99% CI: 60.4-2286.7). CONCLUSION Currently, the follow-up protocol for HNSCC patients includes routine clinical evaluation and radiological imaging. Biomarkers to monitor this disease are not established. Considering its high specificity, cfHPV-DNA represents a potential confirmatory test in the case of positive positron emission tomography and computed tomography. In the near future, cfHPV-DNA could be used as a biomarker for monitoring the treatment response during the clinical trials of de-escalation therapy or immunotherapy. Larger sample sizes and the homologation of study protocols and methodology are needed to better establish its utility in the clinical practice. Laryngoscope, 2021.
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Affiliation(s)
- Flaminia Campo
- Department of Otolaryngology-Head and Neck Surgery, Regina Elena National Cancer Institute IRCCS, Rome, Italy.,Department of Sense Organs, Sapienza University of Rome, Rome, Italy
| | - Jacopo Zocchi
- Department of Otolaryngology-Head and Neck Surgery, Regina Elena National Cancer Institute IRCCS, Rome, Italy
| | - Silvia Moretto
- Department of Otolaryngology-Head and Neck Surgery, Regina Elena National Cancer Institute IRCCS, Rome, Italy
| | - Francesco Mazzola
- Department of Otolaryngology-Head and Neck Surgery, Regina Elena National Cancer Institute IRCCS, Rome, Italy
| | - Gerardo Petruzzi
- Department of Otolaryngology-Head and Neck Surgery, Regina Elena National Cancer Institute IRCCS, Rome, Italy
| | - Maria G Donà
- STI/HIV Unit, San Gallicano Dermatological Institute IRCCS, Rome, Italy
| | - Maria Benevolo
- Department of Pathology, Regina Elena National Cancer Institute IRCCS, Rome, Italy
| | - Oreste Iocca
- Division of Maxillofacial Surgery, Surgical Science Department, University of Torino, Torino, Italy
| | - Armando De Virgilio
- Department of Biomedical Sciences, Humanitas University, Milan, Italy.,Otorhinolaryngology Unit, IRCCS Humanitas Research Hospital, Milan, Italy
| | - Barbara Pichi
- Department of Otolaryngology-Head and Neck Surgery, Regina Elena National Cancer Institute IRCCS, Rome, Italy
| | - Valentina Manciocco
- Department of Otolaryngology-Head and Neck Surgery, Regina Elena National Cancer Institute IRCCS, Rome, Italy
| | - Raul Pellini
- Department of Otolaryngology-Head and Neck Surgery, Regina Elena National Cancer Institute IRCCS, Rome, Italy
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[HPV-related oropharyngeal squamous cell carcinoma-Incidence steadily rising]. HNO 2021; 69:599-608. [PMID: 34143237 DOI: 10.1007/s00106-021-01087-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/05/2021] [Indexed: 10/21/2022]
Abstract
The incidence of human papillomavirus (HPV)-positive oropharyngeal squamous cell carcinoma (OPSCC) is steadily increasing worldwide and has already exceeded cervical cancer rates in the USA. Due to their tumor biology, HPV-positive tumors of the oropharynx, which have been included in the eighth edition of the AJCC/UICC (American Joint Committee on Cancer/Union Internationale Contre le Cancer) Staging Manual since 2018, represent a separate entity. Following biopsy, diagnostic confirmation is performed by immunohistochemical detection of p16 expression, with p16 acting as a surrogate marker. Therapeutically, surgical and radiotherapeutic approaches are considered equivalent in terms of efficacy. With a 5-year overall survival of up to 80%, patients with HPV-positive OPSCC have a better prognosis compared to patients with HPV-negative OPSCC, where survival rates are between 40 and 50%.
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Sensitivity and Specificity of Human Papillomavirus (HPV) 16 Early Antigen Serology for HPV-Driven Oropharyngeal Cancer: A Systematic Literature Review and Meta-Analysis. Cancers (Basel) 2021; 13:cancers13123010. [PMID: 34208476 PMCID: PMC8234521 DOI: 10.3390/cancers13123010] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/10/2021] [Accepted: 06/11/2021] [Indexed: 02/01/2023] Open
Abstract
Simple Summary Serum antibodies against human papillomavirus 16 (HPV16) proteins are associated with HPV-driven oropharyngeal cancer (HPV-OPC). The HPV status of OPC cases is clinically relevant because patients with HPV-OPC show improved survival and treatment response compared to tobacco- or alcohol-induced OPC. In clinical settings, molecular HPV tumor status is usually determined by tissue-based methods detecting molecular markers, such as viral nucleic acids or p16 overexpression. Antibodies against HPV16 in peripheral blood were shown to be very accurate in determining the molecular HPV tumor status in multiple studies. In this work, we reviewed and summarized the available literature on the performance of HPV16 serology for E2, E6 and E7 antibodies to determine molecular HPV tumor status in OPC cases in comparison with tissue-based reference methods. We calculated summary estimates across different studies for sensitivity and specificity, and we investigated factors influencing test performance. Abstract Antibodies against HPV16 early proteins have been shown to be promising biomarkers for the identification of HPV-driven oropharyngeal cancer (HPV-OPC) among OPC cases in multiple studies. A systematic literature search was performed to identify original research articles comparing HPV early antigen serology with established reference methods to determine molecular HPV tumor status. Random-effects models were used to calculate summary estimates for sensitivity and specificity of HPV16 E2, E6 and E7 serology for HPV-OPC. Subgroup analyses were performed to explore heterogeneity across studies and describe variables associated with test performance. We identified n = 23 studies meeting all eligibility criteria and included these in the meta-analysis. E6 serology showed the best performance with pooled sensitivity and specificity estimates of 83.1% (95% confidence interval (CI) 72.5–90.2%) and 94.6% (95% CI 89.0–97.4%), respectively, while E2 and E7 serological assays were highly specific (E2: 92.5% (95% CI 79.1–97.6%); E7: 88.5% (95% CI 77.9–94.4%)) but moderately sensitive (E2: 67.8% (95% CI 58.9–75.6%); E7: 67.0% (95% CI 63.2–70.6%)). Subgroup analyses revealed increased pooled sensitivity for bacterially (89.9% (95% CI 84.5–93.6%)) vs. in vitro expressed E6 antigen (55.3% (95% CI 41.0–68.7%)), while both showed high specificity (95.2% (95% CI 93.0–96.7%) and 91.1% (95% CI 46.6–99.2%), respectively). Pooled specificity estimates for HPV16 E2, E6 and E7 serology were significantly lower in studies utilizing HPV DNA PCR as the only molecular reference method compared to those using a combination of any two reference methods (HPV DNA, RNA, in situ hybridization (ISH), p16 immunohistochemistry (IHC)), or histopathological reference methods (ISH or p16 IHC) as stand-alone marker. In conclusion, HPV16 E6 seropositivity is a highly sensitive and specific biomarker for HPV-OPC. However, its performance differs between serological assays and depends on molecular reference methods.
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Kacew AJ, Hanna GJ. Value and Unmet Needs in Non-Invasive Human Papillomavirus (HPV) Testing for Oropharyngeal Cancer. Cancers (Basel) 2021; 13:cancers13030562. [PMID: 33540527 PMCID: PMC7867186 DOI: 10.3390/cancers13030562] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 01/21/2021] [Accepted: 01/29/2021] [Indexed: 12/16/2022] Open
Abstract
Simple Summary As the leading human papillomavirus (HPV)-related cancer, oropharyngeal cancer places a significant burden on patients, families, and health systems. Techniques to easily and quickly test people for HPV through non-invasive means (saliva or blood tests) could, in principle, help us better understand this disease, prevent it, and treat it. However, there is currently no standardized methodology for testing saliva or blood for HPV, and such testing is not a part of routine clinical practice. In this review, we discuss and compare some of the collection and testing platforms that researchers have studied to date. We also evaluate the potential strengths and limitations of these technologies for addressing unmet needs in specific clinical contexts. Abstract The burden of human papillomavirus (HPV)-related oropharyngeal cancer (OPC) has risen, now representing the most common HPV-related malignancy. For years, researchers have explored the utility of measuring HPV-related markers from mouth, throat, and blood samples, often with the aim of gathering more information about an existing HPV-related tumor in a given patient. We review the widely varying methods for collecting and testing saliva and blood samples and offer guidance for standardizing these practices. We then review an array of clinical contexts in which non-invasive testing holds the most promise for potentially addressing unmet needs. In particular, such testing could help clinicians and researchers monitor the effects of vaccination and treatment. Meanwhile, due to the currently incomplete understanding of how carrying HPV relates to infection and subsequent oncogenesis, non-invasive testing methods may not be suitable for the screening setting at this time.
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Affiliation(s)
- Alec J. Kacew
- Biological Sciences Division, Pritzker School of Medicine, The University of Chicago, 924 E 57th St, Chicago, IL 60637, USA;
| | - Glenn J. Hanna
- Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA 02215, USA
- Correspondence: ; Tel.: +1-617-632-3090
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