Oral MicrobiomeNCT04993846
Pancreatic Cancer and Oral Microbiome
An observational study of Oral Microbiome and Pancreatic Cancer, run by Azienda Ospedaliera Universitaria Integrata Verona at 2 sites in Italy.
Trial summary
Pancreatic cancer (PC) is a solid malignancy with a dismal prognosis. It has a 5-year survival rate of approximately 8%. This is due to the usually late diagnosis, to chemoresistance, and to intrinsic biological aggressiveness. Risk factors for PC are smoking, alcohol, chronic pancreatitis, obesity, and diabetes. Read more about this study
- Who is it for?
- Ages 18 to 75 yearsHealthy volunteers can take part
- Conditions the study is for
- Oral Microbiome, Pancreatic Cancer, IPMN
- What is being tested?
- Dental plaque sampling and qPCR
- Type of treatment
- Pill or oral medicine, Injection or infusion
- How many people
- 120 participants
- Where
- 2 sitesItaly
- Study dates
- 26 Jul 2021to 31 Dec 2023
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 75 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Study population: Patients with a cyto-histological diagnosis of pancreatic cancer, respecting the inclusion and exclusion criteria
Who may be able to join
- 18-75 years;
- The ability of the subject to understand the character and individual consequences of the clinical trial
- Written informed consent
Who cannot join
- A recent history of antibiotics (< 4 weeks before the enrolment)
- Current systemic or topic medication with steroids
- Active smoking or alcohol habits
- Vegan diet or dietary disorders (anorexia, bulimia)
- Immune system disorders
- Diabetes
Show all 11Show fewer
- Obesity (defined as having a BMI > 30)
- Other current malignancies
- History of gastrointestinal tract resections, chronic gastrointestinal diseases (es. Inflammatory bowel diseases, or gastroesophageal reflux disease)
- Pregnant or breastfeeding patients
- Impaired mental state or language problems
Trial locations and contacts
2 sites in 1 country.
Italy2 sites, 2 recruiting
- Recruiting
General and Pancreatic Surgery Unit
Verona
Salvatore Paiella, +390458126009, salvatore.paiella@univr.it
Erica Secchettin, +390458126254, erica.secchettin@univr.it
- Recruiting
Section of Dentistry and Maxillofacial Surgery, Department of Surgical Sciences, Paediatrics and Gynaecology
Verona
Francesca Zotti, francesca.zotti@univr.it
About this study
Official title: Pancreatic canceR pErioDontAl sTatus and Oral micRobiome - PREDATOR Study
Pancreatic cancer (PC) is a solid malignancy with a dismal prognosis. It has a 5-year survival rate of approximately 8%. This is due to the usually late diagnosis, to chemoresistance, and to intrinsic biological aggressiveness. Risk factors for PC are smoking, alcohol, chronic pancreatitis, obesity, and diabetes. Recently, research has been dedicated to the identification of a causal connection between certain pathogenic microorganisms, especially of the oral flora, and PC. This would ultimately allow to identify new biomarkers to adopt for early diagnosis, or to create new strategies for prevention.
Oral microbiota, periodontal disease and neoplastic risk
Read more
When referring to "oral microbiota" (OM), about 700 hundreds bacterial species are mentioned, colonizing the oral cavity. A change in the normal flora of the oral cavity is commonly indicated with the term "dysbiosis".
The causal connection between oral microbiota, periodontal disease and neoplastic risk is possibly triple. First, it has been found that oral flora substantially differentiates between cancer patients and controls. In particular, the most predominant phyla in cancer patients are Firmicutes and Actinobacteria, whereas Proteobacteria, Fusobacteria, and Bacteroides are more common in healthy controls. This highlights the possibility of a direct causal connection between dysbiosis and neoplastic risk. Second, oral dysbiosis represents the main risk factor of PD that per sé is a risk factor of many cancers. Third, the conditions leading to oral dysbiosis (alcohol, smoking, obesity, diabetes, chronic drugs intake, dietary habits, etc.) are the most well known risk factors either for cancer and oral dysbiosis. The common denominator is always represented by chronic inflammation and migration of microorganisms to distant sites, ultimately promoting neoplastic progression.
This tangled net of causal connections sheds light on the potential important role of the oral cavity and PD as independent risk factors for many cancers, and as modifiable elements to reduce the neoplastic risk and to perform prevention(15).
Oral microbiota, periodontal disease and pancreatic cancer
In 2012, the pioneering study by Farrell et al. showed that bacteria of the OM can discriminate PC patients from healthy subjects. Since then, few other studies have shown that changes of the OM are independent risk factors for PC and that the OM of PC patients differs than controls. The involved bacterial species are many and their role seems to be contrasting on the basis of the study considered. Farrell et al. found that the combined adoption of Neisseria elongata and Streptococcus mitis distinguished PC patients from healthy controls (both showed low levels in PC patients, AUC of combined sensitivity 0.9), and that higher levels of Granulicatella adiacens and Streptococcus Mitis distinguished PC patients from chronic pancreatitis ones. Torres et al. found a higher ratio of Leptotrichia to Porphyromonas in PC patients. Fan et al. reported that Porphyromonas gingivalis, Prevotella intermedia, Alloprevotella and Aggregatibacter actinomycetemcomitans are associated with a higher risk of PC, whereas Fusobacteria and Leptotrichia were associated with a decreased risk. Another study evaluating the diversity of OM in three groups of individuals (PC patients, patients suffering from Intraductal papillary mucinous neoplasms [a pancreatic preneoplastic condition], and healthy controls), excluding current smokers and users of antibiotics, found no differences in the OM, although patients with PC had a higher proportion of Firmicutes compared with Intraductal Papillary Mucinous Neoplasms (IPMNs) and controls. Lastly, a recent study by Gaiser et al. showed that the cystic fluid of patients submitted to surgery for IPMNs contained bacterial species that are commonly found in the oral cavity, including, among the others, Granulicatella adiacens, Fusobacterium nucleatum. These two, in particular, were higher in the cohort of individuals with IPMNs with high-grade dysplasia, indicating a pivotal role in tumorigenesis(19).
As regards PD, the first studies demonstrating an association between PD and PC date back to the mid of 2000's, and they were confirmed afterward, even adjusting confounders such as diabetes, pancreatitis, hyperlipemia, smoking or alcohol-related conditions. PD is strictly connected to oral hygiene, that seems to be associated to an increased risk of PC. It is now clear that PD can concur to development of PC in several ways, promoting chronic inflammation, spreading continuously to distant organs (including pancreas) pro-tumorigenic bacteria, or promoting a chronic alteration of the immune function that make the individual more prone to develop a cancer.
- Conditions
- Oral Microbiome, Pancreatic Cancer, IPMN, Parodontopathy
- Being tested
- Dental plaque sampling, qPCR
- Medical subject headings
- Pancreatic Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Dental plaque samplingDiagnostic test
Dental plaque sampling
qPCRDiagnostic test
qPCR
| Study group | Role | What they receive |
|---|---|---|
| Pancreatic cancer patients - Explorative phase | Pancreatic cancer patients evaluated at the Pancreatic Surgery Unit of the Pancreas Institute of the University of Verona will be enrolled. Fifteen PC patients per stage will be selected (15 Stage I/II, Stage III, Stage IV). Patients may have been scheduled for surgery or for biopsy for future systemic treatments. An oral microbiota (dental plaque) sample will be collected and a periodontal and dental assessment will be performed, before any therapeutic procedure, together with orthopantomography Receives: Diagnostic Test: Dental plaque sampling; Diagnostic Test: qPCR | |
| Healthy controls - Explorative phase | Age-matched (+- 5 years) healthy controls referring to the Odontostomatology Unit for oral procedure according to clinical practice, with a recent (not longer than 12 months) cross-sectional abdominal imaging excluding gastrointestinal cancers. Receives: Diagnostic Test: Dental plaque sampling; Diagnostic Test: qPCR | |
| Pancreatic cancer patients - Validation phase | Pancreatic cancer patients evaluated at the Pancreatic Surgery Unit of the Pancreas Institute of the University of Verona will be enrolled. Fifteen PC patients per stage will be selected (15 Stage I/II, Stage III, Stage IV). Patients may have been scheduled for surgery or for biopsy for future systemic treatments. Receives: Diagnostic Test: Dental plaque sampling; Diagnostic Test: qPCR | |
| Healthy controls - Validation phase | Age-matched (+- 5 years) healthy controls referring to the Odontostomatology Unit for oral procedure according to clinical practice, with a recent (not longer than 12 months) cross-sectional abdominal imaging excluding gastrointestinal cancers. Receives: Diagnostic Test: Dental plaque sampling; Diagnostic Test: qPCR | |
| IPMN patients controls - Validation phase | Patients suffering from IPMNs evaluated at outpatients clinics or scheduled for surgery. Receives: Diagnostic Test: Dental plaque sampling; Diagnostic Test: qPCR |
What is being measured
The primary outcome is the main question the study is designed to answer.
Qualitative analysis of the dental plaque microbiome in patients with pancreatic cancer vs. healthy controls and IPMN patients
Whole-Genome Sequencing analysis
Measured: Baseline (At enrollment)
Correlation analysis between periodontal status and dental plaque microbiome
According to the periodontal status (appropriate scores will be used), patients will be divided into distinct groups. The proportional means of abundance of selected genera and species, and bacterial load (real-time data) between these groups will be analyzed using the Mann-Whitney U-test. Correlations between mean distributions of the genera and species and the parodontal status scores values will be analysed using the Spearman Correlation Coefficient.
Measured: Baseline (At enrollment)
Quantitative analysis of the dental plaque microbiome in patients with pancreatic cancer vs. healthy controls and IPMN patients
Whole-Genome Sequencing analysis
Measured: Baseline (At enrollment)
Secondary outcomes (1)
Qualitative analysis of OM and periodontal status between the various stages of PC
Whole-Genome Sequencing analysis
Measured: Baseline (At enrollment)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted6 Aug 2021
- Study start26 Jul 2021
- Primary completion30 Jun 2023 (estimated)
- Study completion31 Dec 2023 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (6)Papers the sponsor has linked to this study.
- Other trials for Oral MicrobiomeStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case-control
- Time perspective
- Prospective
- Enrolment
- 120 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Azienda Ospedaliera Universitaria Integrata Verona
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04993846
- Sponsor's protocol ID
- 3292CESC
- Status last verified
- Jan 2021
- First submitted
- 26 May 2021
- Last updated
- 6 Aug 2021
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Fan X, Alekseyenko AV, Wu J, Peters BA, Jacobs EJ, Gapstur SM, Purdue MP, Abnet CC, Stolzenberg-Solomon R, Miller G, Ravel J, Hayes RB, Ahn J. Human oral microbiome and prospective risk for pancreatic cancer: a population-based nested case-control study. Gut. 2018 Jan;67(1):120-127. doi: 10.1136/gutjnl-2016-312580. Epub 2016 Oct 14.
PubMed 27742762Farrell JJ, Zhang L, Zhou H, Chia D, Elashoff D, Akin D, Paster BJ, Joshipura K, Wong DT. Variations of oral microbiota are associated with pancreatic diseases including pancreatic cancer. Gut. 2012 Apr;61(4):582-8. doi: 10.1136/gutjnl-2011-300784. Epub 2011 Oct 12.
PubMed 21994333Torres PJ, Fletcher EM, Gibbons SM, Bouvet M, Doran KS, Kelley ST. Characterization of the salivary microbiome in patients with pancreatic cancer. PeerJ. 2015 Nov 5;3:e1373. doi: 10.7717/peerj.1373. eCollection 2015.
PubMed 26587342Olson SH, Satagopan J, Xu Y, Ling L, Leong S, Orlow I, Saldia A, Li P, Nunes P, Madonia V, Allen PJ, O'Reilly E, Pamer E, Kurtz RC. The oral microbiota in patients with pancreatic cancer, patients with IPMNs, and controls: a pilot study. Cancer Causes Control. 2017 Sep;28(9):959-969. doi: 10.1007/s10552-017-0933-8. Epub 2017 Jul 31.
PubMed 28762074Michaud DS, Izard J, Wilhelm-Benartzi CS, You DH, Grote VA, Tjonneland A, Dahm CC, Overvad K, Jenab M, Fedirko V, Boutron-Ruault MC, Clavel-Chapelon F, Racine A, Kaaks R, Boeing H, Foerster J, Trichopoulou A, Lagiou P, Trichopoulos D, Sacerdote C, Sieri S, Palli D, Tumino R, Panico S, Siersema PD, Peeters PH, Lund E, Barricarte A, Huerta JM, Molina-Montes E, Dorronsoro M, Quiros JR, Duell EJ, Ye W, Sund M, Lindkvist B, Johansen D, Khaw KT, Wareham N, Travis RC, Vineis P, Bueno-de-Mesquita HB, Riboli E. Plasma antibodies to oral bacteria and risk of pancreatic cancer in a large European prospective cohort study. Gut. 2013 Dec;62(12):1764-70. doi: 10.1136/gutjnl-2012-303006. Epub 2012 Sep 18.
PubMed 22990306Vogtmann E, Han Y, Caporaso JG, Bokulich N, Mohamadkhani A, Moayyedkazemi A, Hua X, Kamangar F, Wan Y, Suman S, Zhu B, Hutchinson A, Dagnall C, Jones K, Hicks B, Shi J, Malekzadeh R, Abnet CC, Pourshams A. Oral microbial community composition is associated with pancreatic cancer: A case-control study in Iran. Cancer Med. 2020 Jan;9(2):797-806. doi: 10.1002/cam4.2660. Epub 2019 Nov 21.
PubMed 31750624
Study at a glance
From the registry record, last updated by the sponsor on 6 Aug 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Pancreatic canceR pErioDontAl sTatus and Oral micRobiome - PREDATOR Study
- ClinicalTrials.gov ID
- NCT04993846
- Acronym / sponsor ID
- 3292CESC
- Conditions
- Oral Microbiome, Pancreatic Cancer, IPMN, Parodontopathy
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 120 participants (estimated)
- Lead sponsor
- Azienda Ospedaliera Universitaria Integrata VeronaUniversity, hospital or other
- Study start
- 26 Jul 2021 (actual)
- Primary completion
- 30 Jun 2023 (estimated)
- Study completion
- 31 Dec 2023 (estimated)
- First posted
- 6 Aug 2021 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Pancreatic cancer (PC) is a solid malignancy with a dismal prognosis. It has a 5-year survival rate of approximately 8%. This is due to the usually late diagnosis, to chemoresistance, and to intrinsic biological aggressiveness. Risk factors for PC are smoking, alcohol, chronic pancreatitis, obesity, and diabetes. Recently, research has been dedicated to the identification of a causal connection between certain pathogenic microorganisms, especially of the oral flora, and PC. This would ultimately allow to identify new biomarkers to adopt for early diagnosis, or to create new strategies for prevention.
Oral microbiota, periodontal disease and neoplastic risk
When referring to "oral microbiota" (OM), about 700 hundreds bacterial species are mentioned, colonizing the oral cavity. A change in the normal flora of the oral cavity is commonly indicated with the term "dysbiosis".
The causal connection between oral microbiota, periodontal disease and neoplastic risk is possibly triple. First, it has been found that oral flora substantially differentiates between cancer patients and controls. In particular, the most predominant phyla in cancer patients are Firmicutes and Actinobacteria, whereas Proteobacteria, Fusobacteria, and Bacteroides are more common in healthy controls. This highlights the possibility of a direct causal connection between dysbiosis and neoplastic risk. Second, oral dysbiosis represents the main risk factor of PD that per sé is a risk factor of many cancers. Third, the conditions leading to oral dysbiosis (alcohol, smoking, obesity, diabetes, chronic drugs intake, dietary habits, etc.) are the most well known risk factors either for cancer and oral dysbiosis. The common denominator is always represented by chronic inflammation and migration of microorganisms to distant sites, ultimately promoting neoplastic progression.
This tangled net of causal connections sheds light on the potential important role of the oral cavity and PD as independent risk factors for many cancers, and as modifiable elements to reduce the neoplastic risk and to perform prevention(15).
Oral microbiota, periodontal disease and pancreatic cancer
In 2012, the pioneering study by Farrell et al. showed that bacteria of the OM can discriminate PC patients from healthy subjects. Since then, few other studies have shown that changes of the OM are independent risk factors for PC and that the OM of PC patients differs than controls. The involved bacterial species are many and their role seems to be contrasting on the basis of the study considered. Farrell et al. found that the combined adoption of Neisseria elongata and Streptococcus mitis distinguished PC patients from healthy controls (both showed low levels in PC patients, AUC of combined sensitivity 0.9), and that higher levels of Granulicatella adiacens and Streptococcus Mitis distinguished PC patients from chronic pancreatitis ones. Torres et al. found a higher ratio of Leptotrichia to Porphyromonas in PC patients. Fan et al. reported that Porphyromonas gingivalis, Prevotella intermedia, Alloprevotella and Aggregatibacter actinomycetemcomitans are associated with a higher risk of PC, whereas Fusobacteria and Leptotrichia were associated with a decreased risk. Another study evaluating the diversity of OM in three groups of individuals (PC patients, patients suffering from Intraductal papillary mucinous neoplasms [a pancreatic preneoplastic condition], and healthy controls), excluding current smokers and users of antibiotics, found no differences in the OM, although patients with PC had a higher proportion of Firmicutes compared with Intraductal Papillary Mucinous Neoplasms (IPMNs) and controls. Lastly, a recent study by Gaiser et al. showed that the cystic fluid of patients submitted to surgery for IPMNs contained bacterial species that are commonly found in the oral cavity, including, among the others, Granulicatella adiacens, Fusobacterium nucleatum. These two, in particular, were higher in the cohort of individuals with IPMNs with high-grade dysplasia, indicating a pivotal role in tumorigenesis(19).
As regards PD, the first studies demonstrating an association between PD and PC date back to the mid of 2000's, and they were confirmed afterward, even adjusting confounders such as diabetes, pancreatitis, hyperlipemia, smoking or alcohol-related conditions. PD is strictly connected to oral hygiene, that seems to be associated to an increased risk of PC. It is now clear that PD can concur to development of PC in several ways, promoting chronic inflammation, spreading continuously to distant organs (including pancreas) pro-tumorigenic bacteria, or promoting a chronic alteration of the immune function that make the individual more prone to develop a cancer.
Study design
- Observational model
- Case-control
- Time perspective
- Prospective
- Number of arms
- 5
| Arm | Type | Receives |
|---|---|---|
| Pancreatic cancer patients - Explorative phase | – | Diagnostic Test: Dental plaque sampling, Diagnostic Test: qPCRPancreatic cancer patients evaluated at the Pancreatic Surgery Unit of the Pancreas Institute of the University of Verona will be enrolled. Fifteen PC patients per stage will be selected (15 Stage I/II, Stage III, Stage IV). Patients may have been scheduled for surgery or for biopsy for future systemic treatments. An oral microbiota (dental plaque) sample will be collected and a periodontal and dental assessment will be performed, before any therapeutic procedure, together with orthopantomography |
| Healthy controls - Explorative phase | – | Diagnostic Test: Dental plaque sampling, Diagnostic Test: qPCRAge-matched (+- 5 years) healthy controls referring to the Odontostomatology Unit for oral procedure according to clinical practice, with a recent (not longer than 12 months) cross-sectional abdominal imaging excluding gastrointestinal cancers. |
| Pancreatic cancer patients - Validation phase | – | Diagnostic Test: Dental plaque sampling, Diagnostic Test: qPCRPancreatic cancer patients evaluated at the Pancreatic Surgery Unit of the Pancreas Institute of the University of Verona will be enrolled. Fifteen PC patients per stage will be selected (15 Stage I/II, Stage III, Stage IV). Patients may have been scheduled for surgery or for biopsy for future systemic treatments. |
| Healthy controls - Validation phase | – | Diagnostic Test: Dental plaque sampling, Diagnostic Test: qPCRAge-matched (+- 5 years) healthy controls referring to the Odontostomatology Unit for oral procedure according to clinical practice, with a recent (not longer than 12 months) cross-sectional abdominal imaging excluding gastrointestinal cancers. |
| IPMN patients controls - Validation phase | – | Diagnostic Test: Dental plaque sampling, Diagnostic Test: qPCRPatients suffering from IPMNs evaluated at outpatients clinics or scheduled for surgery. |
Who may qualify
- Ages
- 18 to 75 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- Patients with a cyto-histological diagnosis of pancreatic cancer, respecting the inclusion and exclusion criteria
Key inclusion criteria (3 listed)
- 18-75 years;
- The ability of the subject to understand the character and individual consequences of the clinical trial
- Written informed consent
Key exclusion criteria (11 listed)
- A recent history of antibiotics (< 4 weeks before the enrolment)
- Current systemic or topic medication with steroids
- Active smoking or alcohol habits
- Vegan diet or dietary disorders (anorexia, bulimia)
- Immune system disorders
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Dental plaque samplingDental plaque sampling | Diagnostic test | Healthy controls - Explorative phase, Healthy controls - Validation phase, IPMN patients controls - Validation phase, Pancreatic cancer patients - Explorative phase, Pancreatic cancer patients - Validation phase |
| qPCRqPCR | Diagnostic test | Healthy controls - Explorative phase, Healthy controls - Validation phase, IPMN patients controls - Validation phase, Pancreatic cancer patients - Explorative phase, Pancreatic cancer patients - Validation phase |
Primary outcome
Qualitative analysis of the dental plaque microbiome in patients with pancreatic cancer vs. healthy controls and IPMN patients
Time frame: Baseline (At enrollment)
Whole-Genome Sequencing analysis
Correlation analysis between periodontal status and dental plaque microbiome
Time frame: Baseline (At enrollment)
According to the periodontal status (appropriate scores will be used), patients will be divided into distinct groups. The proportional means of abundance of selected genera and species, and bacterial load (real-time data) between these groups will be analyzed using the Mann-Whitney U-test. Correlations between mean distributions of the genera and species and the parodontal status scores values will be analysed using the Spearman Correlation Coefficient.
Quantitative analysis of the dental plaque microbiome in patients with pancreatic cancer vs. healthy controls and IPMN patients
Time frame: Baseline (At enrollment)
Whole-Genome Sequencing analysis
1 secondary outcome
Qualitative analysis of OM and periodontal status between the various stages of PC
Time frame: Baseline (At enrollment)
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 6 Aug 2021.
- Results publication: PubMed 27742762Fan X, Alekseyenko AV, Wu J, Peters BA, Jacobs EJ, Gapstur SM, Purdue MP, Abnet CC, Stolzenberg-Solomon R, Miller G, Ravel J, Hayes RB, Ahn J. Human oral microbiome and prospective risk for pancreatic cancer: a population-based nested case-control study. Gut. 2018 Jan;67(1):120-127. doi: 10.1136/gutjnl-2016-312580. Epub 2016 Oct 14.
- Results publication: PubMed 21994333Farrell JJ, Zhang L, Zhou H, Chia D, Elashoff D, Akin D, Paster BJ, Joshipura K, Wong DT. Variations of oral microbiota are associated with pancreatic diseases including pancreatic cancer. Gut. 2012 Apr;61(4):582-8. doi: 10.1136/gutjnl-2011-300784. Epub 2011 Oct 12.
- Results publication: PubMed 26587342Torres PJ, Fletcher EM, Gibbons SM, Bouvet M, Doran KS, Kelley ST. Characterization of the salivary microbiome in patients with pancreatic cancer. PeerJ. 2015 Nov 5;3:e1373. doi: 10.7717/peerj.1373. eCollection 2015.
- Results publication: PubMed 28762074Olson SH, Satagopan J, Xu Y, Ling L, Leong S, Orlow I, Saldia A, Li P, Nunes P, Madonia V, Allen PJ, O'Reilly E, Pamer E, Kurtz RC. The oral microbiota in patients with pancreatic cancer, patients with IPMNs, and controls: a pilot study. Cancer Causes Control. 2017 Sep;28(9):959-969. doi: 10.1007/s10552-017-0933-8. Epub 2017 Jul 31.
- Results publication: PubMed 22990306Michaud DS, Izard J, Wilhelm-Benartzi CS, You DH, Grote VA, Tjonneland A, Dahm CC, Overvad K, Jenab M, Fedirko V, Boutron-Ruault MC, Clavel-Chapelon F, Racine A, Kaaks R, Boeing H, Foerster J, Trichopoulou A, Lagiou P, Trichopoulos D, Sacerdote C, Sieri S, Palli D, Tumino R, Panico S, Siersema PD, Peeters PH, Lund E, Barricarte A, Huerta JM, Molina-Montes E, Dorronsoro M, Quiros JR, Duell EJ, Ye W, Sund M, Lindkvist B, Johansen D, Khaw KT, Wareham N, Travis RC, Vineis P, Bueno-de-Mesquita HB, Riboli E. Plasma antibodies to oral bacteria and risk of pancreatic cancer in a large European prospective cohort study. Gut. 2013 Dec;62(12):1764-70. doi: 10.1136/gutjnl-2012-303006. Epub 2012 Sep 18.
- Results publication: PubMed 31750624Vogtmann E, Han Y, Caporaso JG, Bokulich N, Mohamadkhani A, Moayyedkazemi A, Hua X, Kamangar F, Wan Y, Suman S, Zhu B, Hutchinson A, Dagnall C, Jones K, Hicks B, Shi J, Malekzadeh R, Abnet CC, Pourshams A. Oral microbial community composition is associated with pancreatic cancer: A case-control study in Iran. Cancer Med. 2020 Jan;9(2):797-806. doi: 10.1002/cam4.2660. Epub 2019 Nov 21.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Oral Microbiome and Pancreatic Cancer, run by Azienda Ospedaliera Universitaria Integrata Verona at 2 sites in Italy.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 6 Aug 2021. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in Italy. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Salvatore Paiella, MD, PhD (00390458126009, salvatore.paiella@univr.it), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Qualitative analysis of the dental plaque microbiome in patients with pancreatic cancer vs. healthy controls and IPMN patients (time frame: Baseline (At enrollment)). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04993846, which also lists 6 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Aug 2021.