new tools for cervical cancer prevention jose jeronimo, md june 11, 2009
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New Tools for Cervical Cancer Prevention Jose Jeronimo, MD June 11, 2009. Theta. Eta. Kappa. Mu. Lambda. Nu. A10. Lota. A13. A1. Zeta. A8. Delta. A9. Epsilon. A11. A7. Alpha. A5. Beta. A6. A2. A15. A4. New Genus. Pi. A3. Gamma. Xi. Omikron. - PowerPoint PPT PresentationTRANSCRIPT
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Welcome to I-TECH HIV/AIDS Clinical Seminar Series
New Tools for Cervical Cancer PreventionJose Jeronimo, MD
June 11, 2009
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Condyloma
Neoplastic
Vaginal
≥100 HPV genotypes ~40 mucotropic HPV genotypes ~15 Carcinogenic HPV genotypes
Human Papillomavirus (HPV)Human Papillomavirus (HPV)
FP
V
70
8687
4736
A10
Alpha
OmikronXiGammaPi
NewGenus
Beta
Epsilon
Delta
ZetaLota
NuLambdaMu
ThetaEtaKappa
A11
A9
A8
A13A1
A7
A5
A6
A2
A15A4
A3
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Peak Ages: 15-25 25-35 45-50
Natural History of HPV infection
and Cervical Cancer
Schiffman, et al., Lancet, 2007
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Primary prevention
Secondary Prevention
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Cervical Cancer Incidence1
1. Ferlay J, Bray F, Pisani P, Parkins DM; International Agency for Research on Cancer (IARC). GLOBOCAN 2002: Cancer Incidence, Mortality, and Prevalence Worldwide. Lyon, France: IARCPress; 2004. CancerBase No. 5, version 2.0.
Central and South America
71,862
Europe59,931
North America14,670
Africa78,897
Asia265,884
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Current menu of options for screening.
VIA HPV testingPAP smear
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Time Pap (CR) Pap (JHU) LBC (US) LBC (CR) Cervigram HCT HPV (PCR) Colpo Histology
0.0 Normal Normal Normal Normal‡ Negative 51;61
13.1 Normal Normal Normal‡ 33
31.4 Reactive Normal Normal‡ 61
44.3 Normal Normal Normal‡ Negative
56.7 Normal Normal Normal‡ Negative
60.4 Normal Normal Normal‡ Negative
84.2 Cancer CIN3 ASCUS Normal‡ 33;35;52;5891.4 Cancer Biopsy = Cancer
Patient 1 (Age = 63; AFS = 18; #Partners = 6)
Case study #1
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Time Pap (CR) Pap (JHU) LBC (US) LBC (CR) Cervigram HCT HPV (PCR) Colpo Histology
0.0 ASCUS Reactive ASCUS Normal (Normal)† Positive 162.9 16 Normal13.2 Reactive ASCUS Reactive Normal (Normal)* 1626.4 Normal CIN3 Normal (Normal)* 16
34.4 Biopsy = Cancer
Patient 2 (Age = 49; AFS = 15; #Partners = 3)
Case study #2
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Trends in age-standardized incidence rates of cervical cancer in four Nordic countries
Parkin DM. Bray F. Vaccine. 2006 Aug 31;24 Suppl 3:S3/11-25
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Limitations of cytology-based programs:
• Deficit of trained cyto-technologists.
• Delay of results.
• Multiple visits: lack of follow-up.
• Cost.
• Sub-optimal sensitivity.
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Pap smear sensitivity
100% of Pre-cancer cases
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One pap smear identifies about
50% of pre-cancerous cases
Pap smear sensitivity
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Pap smear sensitivity
Second pap smear
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Unknown CIN 1 cases
Third Pap smear
Pap smear sensitivity
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“VIA is a good alternative for settings where conventional cytology is not well implemented.”
–IARC/WHO, 2005
IARC, WHO. IARC Handbooks of Cancer Prevention: Cervical Cancer Screening. Volume 10. IARC Press; 2005.
VIA
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Unmagnified view
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Combined
HART
Jena
Tuebingen
Hannover
Canada
Seattle
French Private
French Public
0% 10% 30% 50% 70% 90% 100%
HPV sensitivity
CIN 2+
Cuzick et al., IJC, 2006Mayrand et al., NEJM, 2007
HPV DNA testing
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0%
5%
10%
15%
20%
25%
0.0 4.5 15.0 27.0 39.0 51.0 63.0 75.0 87.0 99.0 111.0 119.5
Follow-up (months)
Acu
mu
late
In
cid
ence
≥C
IN3
HPV16+HPV18+
HPV+
HPV-
Khan et al., JNCI, 2005; Castle et al., AJOG, 2007
Follow-up according to HPV result
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A new HPV-DNA test for low- resource settings
hc2
CareHPV test
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Accuracy of CareHPV, hc2, and VIA in China
Sensitivity Specificity PPV NPV
CareHPV cervical samples (0.5 cutoff) 89.7 84.2 14.7 99.6
CareHPV cervical samples (1.0 cutoff) 84.3 87.5 16.9 99.5
CareHPV vaginal samples (0.5 cutoff) 81.4 82.4 11.9 99.3
hc2 97.1 85.7 16.6 99.9
VIA41.2 94.5 17.9 98.2
n=2,382 (Shanxi Province, China)
Reference standard: directed, four-quadrant biopsy and ECC (>CIN 2) externally read.
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careHPV
• A new HPV test for low-resource settings.
• Affordable price for public-health programs in low- and middle-income countries.
• First regulatory filing expected in late 2009
• Commercially available in late 2010.
• Currently used in demonstration projects.
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START-UP* demonstration projects
*Screening Technologies to Advance Rapid Testing for Cervical Cancer Prevention—Utility and Program Planning (START-UP) project.
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Challenges in HIV infected women
• Higher prevalence of HPV infected women.
* Performance of screening tests different than general population:
- Higher positive rates.
* Need for intervention.
* PATH evaluation options in countries with high HIV prevalence.
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• There is no screening test 100% effective for detecting cervical pre-cancer.
• There are more affordable options forsecondary prevention in low-resource settings.
• Screening for cervical cancer in HIV infected women seems to be more challenging than HIV negative women.
Conclusions:
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Thank you!Next session: June 18th, 2009
Christina MarraHIV and Neurology
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Welcome to I-TECH HIV/AIDS Clinical Seminar Series
Next session: June 18, 2009Listserv: