future strategy for pancreatic cancer screening

Future Strategy for Pancreatic Cancer Screening presenters: Grant Stearns, Robert Joung

facilitator: Dr. Steve Potter

The Problem

• A current screening strategy that diagnoses pancreatic cancer at a stage that offers resectability and treatment (pre-stage 2) is needed.

• An accurate non-invasive technique is needed to justify more invasive techniques.

• Maintain specificity while increasing sensitivity.

AUC above 0.9 is considered highly accurate.

Analytic Methods

• Researched Current Screening Methods.

• Analyzed Current Screening Methods. (ROC Curves)

• Researched Future Strategies.

• Chose Future Strategy and Created Layout for Future Strategy.

• Created Additive Value Model Risk Assessment Worksheet.

• Refined Future Strategy.

Future Strategy Template

[Iacobuzio-Donahue, C. A., S. Yachida, et al. 2010.]

Bob is an obese 52 year-old black male who has had chronic pancreatitis for less than two years and who also has one immediate family member that developed pancreatic cancer.

Bob has 45 points on the Risk Assessment.

This makes Bob a High Risk patient.

Why biomarkers?

• Many methods of testingo Reverse Phase Protein Array

(RPPA)o Luminex Assayso Forward phase or antibody

arrayo Multiplexed Bead Assays

• Decreasing cost

• Mass diagnosis

• Good ROC values

[Li, C. et al. 2011] [Grote, T. et al. 2008] [http://www.oasiswebdevelopment.com/newrpci/services/multiplex.html][Ryozawa, S., H. Iwano, et al. 2011] [http://www.mcponline.org/content/4/4/346.full]

Biomarker Panels ComparisonBiomarker Panel 1 Biomarker Panel 2

[Hoimes, C. et al. 2009] [Farrell, J. et al. 2009]

Step 2: Selected Biomarker Panel

• Combination of 3 mRNA biomarkers (ACVR1, DMXL2, DPM1)

• Differentiate between pancreatic cancer patients and all others

• Sensitivity of 93% and Specificity of 90%

• Addition of a bacterial biomarker (S. Mitis) to the panel

• Differentiates between subjects with pancreatic cancer, chronic pancreatitis, and healthy controls

• Sensitivity of 93% and a Specificity of 85%

[Hoimes, C. et al. 2009]

Invasive Techniques Comparison

[Glasbrenner, B. 2000.] [Kitano, M. 2011.] [Grenacher, L. 2004.] [Li, K. C. 1988] [Pennant, M. 2010.]

Sensitivity: 94.76%Specificity: 89.165%AUC: 0.9196

Sensitivity: 92%Specificity: 85%AUC: 0.885





Invasive Techniques Comparison

[Glasbrenner, B. 2000.] [Kitano, M. 2011.] [Grenacher, L. 2004.] [Li, K. C. 1988] [Pennant, M. 2010.]

CT EUS - ERCP EUS - FNA

EUS MRI PET

Selected Invasive Technique EUS guided FNA• Advantages

o SN of 86.5%o SE of 87.5%o AUC of 0.87

• Costo $2,440-$3,300

• Access• Risk

[Glasbrenner,B. et al ; Kitano, M. et al.] [Ashida, R., Y. Arisaka, et al. 2011] [Ryozawa, S., H. Iwano, et al. 2011] [ Powis,M. et al. 2000.]

Recommendations

• Incorporate the use of the AVM Risk Assessment Sheet to determine the risk level of a patient.

• Incorporate the use of the salivary biomarker panel to further assess the overall risk of a patient post-risk assessment.

• Incorporate the use of EUS-FNA, after a positive biomarker test, specifically to stage and identify the location of pre-stage 2 pancreatic cancer.

Citations• Hassan, M. M., Bondy, M. L., Wolff, R. A., Abbruzzese, J. L., Vauthey, J.-N., Pisters, P. W., . . . Li, D. (2007). Risk factors for

pancreatic cancer: case-control study. The American Journal Of Gastroenterology, 102(12), 2696-2707. • Zavoral, M., Minarikova, P., Zavada, F., Salek, C., & Minarik, M. (2011). Molecular biology of pancreatic cancer. World Journal Of

Gastroenterology: WJG, 17(24), 2897-2908. • Institute, N. C. (2011). SEER Stat Fact Sheets: Pancreas Retrieved September 11, 2011, from

http://seer.cancer.gov/statfacts/html/pancreas.html• B. Glasbrenner, M. Schwarz, S. Pauls, G. Preclik, H. G. Beger, and G. Adler, "Prospective comparison of endoscopic ultrasound and

endoscopic retrograde cholangiopancreatography in the preoperative assessment of masses in the pancreatic head," Digestive Surgery, vol. 17, pp. 468-474, 2000.

• Kitano, M., Sakamoto, H., Komaki, T., & Kudo, M. (2011). New techniques and future perspective of EUS for the differential diagnosis of pancreatic malignancies: contrast harmonic imaging. Digestive Endoscopy: Official Journal Of The Japan Gastroenterological Endoscopy Society, 23 Suppl 1, 46-50. doi: 10.1111/j.1443-1661.2011.01146.x

• Grenacher, L., Klauss, M., Dukic, L., Delorme, S., Knaebel, H. P., Düx, M., . . . Richter, G. M. (2004). [Diagnosis and staging of pancreatic carcinoma: MRI versus multislice-CT -- a prospective study]. Röfo: Fortschritte Auf Dem Gebiete Der Röntgenstrahlen Und Der Nuklearmedizin, 176(11), 1624-1633.

• Li, K. C., & Poon, P. Y. (1988). Sensitivity and specificity of MRI in detecting malignant spinal cord compression and in distinguishing malignant from benign compression fractures of vertebrae. Magnetic Resonance Imaging, 6(5), 547-556.

• Pennant, M., Takwoingi, Y., Pennant, L., Davenport, C., Fry-Smith, A., Eisinga, A., . . . Hyde, C. (2010). A systematic review of positron emission tomography (PET) and positron emission tomography/computed tomography (PET/CT) for the diagnosis of breast cancer recurrence. Health Technology Assessment (Winchester, England), 14(50), 1-103.

• Ashida, R., Y. Arisaka, et al. (2011). "The role of linear array EUS for diagnosis of pancreatic malignancies in the current situation." Digestive Endoscopy: Official Journal Of The Japan Gastroenterological Endoscopy Society 23 Suppl 1: 12-16.

• Ryozawa, S., H. Iwano, et al. (2011). "Genetic diagnosis of pancreatic cancer using specimens obtained by EUS-FNA." Digestive Endoscopy: Official Journal Of The Japan Gastroenterological Endoscopy Society 23 Suppl 1: 43-45. Kapke, G., & Stoddard, J. J. (2008). Biomarkers – boon or bane for researchers? Retrieved September 14, 2011, from http://www.covancecareers.com/biomarkers/pdf/boonorbane.pdf

• Chang, M. E. P. a. K. J. (2000). Endoscopic Ultrasound in the Clinical Staging and Management of Pancreatic Cancer: Its Impact on Cost of Treatment. CANCER CONTROL: JOURNAL OF THE MOFFITT CANCER CENTER, 7(5).

• Li, C., Zolotarevsky, E., Thompson, I., Anderson, M. A., Simeone, D. M., Casper, J. M., . . . Lubman, D. M. (2011). A multiplexed bead assay for profiling glycosylation patterns on serum protein biomarkers of pancreatic cancer. Electrophoresis, 32(15), 2028-2035. doi: 10.1002/elps.201000693

• Grote, T., Siwak, D. R., Fritsche, H. A., Joy, C., Mills, G. B., Simeone, D., . . . Logsdon, C. D. (2008). Validation of reverse phase protein array for practical screening of potential biomarkers in serum and plasma: accurate detection of CA19-9 levels in pancreatic cancer. Proteomics, 8(15), 3051-3060.

• Farrell, J. J., Zhang, L., Sugimoto, M., Hirayama, A., Soga, T., Zhou, H., . . . Wong, D. T. (2009). Multiple Salivary Biomarkers for Pancreatic Cancer Detection. [Meeting Abstract]. Gastroenterology, 136(5), A147-A147.

• Iacobuzio-Donahue, C. A., S. Yachida, et al. (2010). "Distant metastasis occurs late during the genetic evolution of pancreatic cancer." Nature 467(7319): 1114-U1126.

• Hoimes, C. J., Moyer, M. T., & Saif, M. W. (2009). Biomarkers for early detection and screening in pancreatic cancer. Highlights from the 45th ASCO annual meeting. Orlando, FL, USA. May 29-June 2, 2009. JOP: Journal Of The Pancreas, 10(4), 352-356.

• Fishman, K. S. V. C. E. K. Y. L. D. (2005). Use of Reverse Phase Protein Microarrays and Reference Standard Development for Molecular Network Analysis of Metastatic Ovarian Carcinoma. Molecular and Cellular Proteomics, 346-355.

• *Title slide photo credit: Adapted from Pancreatic Cancer Cell, SEM , Steve Gschmeissner /Science Photo Library

QUESTIONS

(Question) Specifics: Risk Assessment* Family History should include pancreatic cancer as well as breast cancer and colon cancer.

** A secondary relative is defined as a patient's aunts, uncles, and first cousins.

*** A primary relative is defined as a patient's parents, grandparents, and siblings.

**** Having an age less than 20 years puts the patient into the No Risk category, and all other points are void.

***** A light smoker is defined as a patient who has smoked for less than 20 years.

****** A heavy smoker is defined as a patient who has smoked for more than 20 years.

[Hassan, M. M. et al. 2007] [Zavoral, M. et al. 2011],[Institute, N. C. 2011]

(Question) Risk Assessment Creation1. Determined weighting of points with Additive Value Model.

• Rank Risk Factors1,3

• Assign point values to risk factors. Give 100 pts to Rank 1 and Rank 2 onward will decend by a value equal to 100/ # of ranks.

• Weighting will be: ( Rank point value ) / (Sum of all points )• Adding the weighting values should give you a value of 1.0 if done correctly.

2. The highest risk characteristic from each risk factor was assigned that risk factor's weighting multiplied by 100.3. The lowest risk characteristic from each risk factor was assigned the value of zero. Assigning a point value for all risk factors would make the point system less accurate and meaningful.4. The intermediate characteristics within each risk value was assigned a point value based on NCI and research statistics relative to the highest risk characteristic. Hypothetically, if the highest risk characteristic's value were to be 100 points, and the statistic for that risk characteristic was 50%, then the second characteristic whose statistical value is 25% would be assigned a value of 50 points.2

5. The point scale was designed to set the highest possible risk at 100 points and the lowest possible risk at 0 points.6. The Low Risk cut-off point for testing was determined to be 15 points based on the highest lowest value that one could have with only the characteristics of gender, race, the lowest age, and one secondary relative with a history of the relevant cancers.7. The Low Risk/ High Risk transition point of 40 points was determined using a peer-reviewed research article's assessments of risk levels for patients as well as an adjustment for potential under-estimation of certain risks.

[Hassan, M. M. et al. 2007], [Zavoral, M. et al. 2011],[Institute, N. C. 2011].

(Question) How often should a patient have a risk assessment?

First Assessment: Age 20Future assessments should be determined by the doctor.Guidelines:- Re-assessment every 2 years at the least.- If the patient has more than 10 points, there should be a re-assessment at every annual checkup.- If the patient is categorized as Low Risk and has Type-II Diabetes or Pancreatitis, the decision of future testing should be left to the patient's physician.

*All values based off of Risk Assessment Chart.

(Question) Stages and rates

• Less than 5% of patients survive 5 years

• In stage I, 21.5% of patients survive 5 years

• In stage II, 8.6% of patients survive 5 years

• In stages III and IV combined, 1.8% of patients survive 5 years

• In unknown stages, 4.2% of patients survive¹

• The median survival rate is between 8 and 14 months²

1National Institute of Cancer, http://seer.cancer.gov/statfacts/html/pancreas.html2Mahadevan A. et Al., Induction Gemcitabine and Stereotactic Body Radiotherapy for Locally Advanced Nonmetastatic Pancreas Cancer

http://seer.cancer.gov/statfacts/html/pancreas.html

(Question) Stages of Pancreatic Cancer• Stage 0: abnormal cells are found in the lining of the pancreas.

• Stage I: cancer has formed in pancreas. -Stage Ia: The tumor is 2 cm or smaller -Stage Ib: The tumor is larger than 2 cm

• Stage II: The cancer has spread. -Stage IIa: The cancer had spread to nearby tissues and organs -Stage IIb: The cancer has spread to lymph nodes

• Stage III: The cancer has spread to the major blood vessels near the pancreas.

• Stage IV: The cancer may be of any size and may have spread to distant organs (liver, lung and, peritoneal cavity). The cancer has metastasized.

National Institute of Cancer, http://seer.cancer.gov/statfacts/html/pancreas.html

http://seer.cancer.gov/statfacts/html/pancreas.html

(Question) Fine Needle AspirationFine Needle Aspiration Biopsy, Fine needle Aspiration Cytology

• Cost: about $2,000 (With EUS/ Lung lesion)

• Interpretation: Dyed sample tissues or cells.

• Limit: Anesthesia might be needed. Most patients feel pain during the procedure.

• Risk: The disease can be spread out through the needle tip.

1Everyday Health (http://www.everydayhealth.com/pancreatic-cancer/biopsy-and-staging.aspx)2AFH library. (http://www.alkalizeforhealth.net/Lneedlebiopsy.htm) 3W.E. Khalbuss,3rd KAMC CYTOPATHOLOGY SYMPOSIUM (http://www.ngha.med.sa/English/MedicalCities/AlRiyadh/Centers/Lab/Symposiums/Documents/Day2/FNA7.EBUS.EUS.pdf )

http://www.everydayhealth.com/pancreatic-cancer/biopsy-and-staging.aspx

http://www.alkalizeforhealth.net/Lneedlebiopsy.htm

(Question) Current Technique - CT

• Cost: $900-$1800• Invasiveness: Use of an IV for

contrast agent.• Limitation: Cannot be used on

obese patients and not recommended for pregnant women.


Grenacher, L. et al. "[Diagnosis and staging of pancreatic carcinoma: MRI versus multislice-CT -- a prospective study]"

(Question) Current Technique - EUS and ERCP• cost: [EUS] $500 [ERCP] $740• Invasiveness: Very Invasive• Limitation:[EUS] limited diagnostic

[ERCP] Iodine allergy. Empty stomach

• Risk: [ERCP] Complications.

Glasbrenner,B. et al. "Prospective comparison of endoscopic ultrasound and endoscopic retrograde cholangiopancreatography in the preoperative assessment of masses in the pancreatic head"


(Question) Current Technique - EUS and FNA • cost: $2,440-$3,300• Invasiveness: Very Invasive• Limitation:[EUS] limited diagnoses• risk:[EUS] allergic reaction

[FNA] bruising.


[Glasbrenner,B. et al] ; [Kitano, M. et al.]; [J Gastroenterol 2004]; [Digestive Endoscopy 201]

(Question) Current Technique - EUS

• Cost: around $500• Invasiveness: Very Invasive• Limitation: Limited diagnostic • Risk: allergic reaction

Glasbrenner,B. et al "Prospective comparison of endoscopic ultrasound and endoscopic retrograde cholangiopancreatography in the preoperative assessment of masses in the pancreatic head" Kitano, M. et al. "New techniques and future perspective of EUS for the differential diagnosis of pancreatic malignancies: contrast harmonic imaging,"


(Question) Current Technique - MRI

• Cost: $400 - $3000• Invasiveness: None Invasive• Limitation:Sensitive to motion• Risk: cannot be used if

ferromagnetic materials are in the body. Can cause skin irritation.

Grenacher, L. et al. "[Diagnosis and staging of pancreatic carcinoma: MRI versus multislice-CT -- a prospective study]" Li, K. C. et al. "Sensitivity and specificity of MRI in detecting malignant spinal cord compression and in distinguishing malignant from benign compression fractures of vertebrae"


(Question) Current Technique - CT and MRI• Cost: [CT] $1800, [MRI] $400-

$3000• Invasiveness: non invasive• Limitation: The image might not be

accurate if certain metal is involved in the body.

• Risk:[CT] [MRI] No metal, can cause skin irritation

Fusari, M. et al. "Comparison between multislice CT and MR imaging in the diagnostic evaluation of patients with pancreatic masses"


(Question) Current Technique - PET

• Cost: $3,000-6,000• Limitation: Is not as good as

other methods at staging and testing for resectability.

• Risk: the exposure to radiation.

Pennant, M. et al. "A systematic review of positron emission tomography (PET) and positron emission tomography/computed tomography (PET/CT) for the diagnosis of breast cancer recurrence"


future strategy for pancreatic cancer screening

Documents

overall risk

risk level

risk fa

refined future strategy

patient postrisk assessment

high risk patient

avm risk assessment

salivary biomarker panel