Guglielmo Ronco CPO Piemonte

Transcript

1 Efficacy of human papillomavirus testing for the detection of invasive cervical cancers and cervical intraepithelial neoplasia: a randomised controlled trial. Guglielmo Ronco CPO Piemonte

2 Studio NTCC Trial randomizzato multicentrico 9 programmi organizzati di screening Torino Padova Verona Trento Bologna Imola Ravenna Firenze Viterbo

3 CONVENTIONAL ARM women Conventional cytology Routine protocol CONVENTIONAL ARM women Conventional cytology Routine protocol PHASE I women PHASE women EXPERIMENTAL ARM women Thin layer cytology + hrhpv DNA test Referral to colposcopy with cytology ASCUS or more severe With normal cytology but HPV positive(1 pg/ml): - if age 35 years or more. referral to colposcopy - If age < 35 years retesting for HPV and cytology and referral if still HPV positive or cytology became ASCUS+ EXPERIMENTAL ARM women hrhpv DNA test Referal to colposcopy if positive at 1 pg/ml cutoff.

4 After colposcopy, if HPV+ and no lesion LBC and HPV yearly - if LBC+ colposcopy - when both negative to new screening round Frequently after colposcopy short term new colposcopy or cytology also in HPV- women (according to gynecologist s advise) At new screening round cytology in both arms

5 PERIODS CONSIDERED Round 1 (recruitment + short interval follow-up) Round 2 (from referral to new round up to 3.5 years after) Total (Round 1+ Round 2) DETECTION OF: CIN2 CIN3 Invasive Ca During each period By age (25-34 and 35-60)

6 NUMBER OF CASES OF INVASIVE CERVICAL CANCER BY SCREENING GROUP AND ROUND HPV group Cytology group p value All ages pooled Screening round one Screening round two 0 9 * Total over first two rounds * 5 squamous-cell carcinomas (1 stage T1A, 4 stage T1B) 4 adenocarcinomas (2 stage T1A, 1 stage T1B, 1 TX) Ronco et al. Lancet Oncol 2010

7 NTCC STUDY WOMEN AGE DETECTION OF CIN 2 or 3 or AIS BY STUDY PERIOD Women enrolled (invited to round 2) screening round1 N (%) HPV group (33363) 206 (0.60%) screening round2 N (%) 16 (0.05%) Total over both rounds N (%) 222 (0.64%) Cytology group (33979) 101 (0.29%) 32 (0.09%) 133 (0.39%) RR (95%CI) 2.03 ( ) 0.51 ( ) 1.66 ( ) P heterogeneity between phases Ronco et al. Lancet Oncol 2010 modif.

8 Study Randomised controlled trials Detection ratio of CIN3 betweeen HPV and cytology group in 2 screening round Screening interval Sweedscreen POBASCAM ARTISTIC NTCC 35-60yrs Detection ratio CIN3 (HPV vs. cytology) 1 Naucler et al Bulkmans et al Kitchener et al Ronco et al. 2010

9 Relative Positive Predictive Value of colposcopy referral (HPV vs. cytology) Stand-alone HPV plus cytological triage (Finnish trial 1 ): 1.34 ( ) Stand alone HPV with direct referral (NTCC PHASE 2 2 ): 0.80 ( ) Combined testing with direct referral NTCC PHASE 1 3 ): 0.34 ( ) 1. Leinonen et al JNCI Ronco et al JNCI Ronco et al JNCI 2006

10 Strongly reduced occurrence of hgcin at round 2 (HPV vs. cytology) prolonged intervals can be applied in HPV negative women In longitudinal studies cumulative incidence (CI) of CIN3+ within 3 years from normal cytology < CIN3+ CI within 5 years from negative HPV. (Dillner BMJ 2008, Mesher Br J Cancer 2010)

11 NTCC STUDY WOMEN AGE DETECTION OF CIN3 or AIS BY STUDY PERIOD Phase 1 HPV group 6602 (5640) 23 (0.38%) 8 (0.14%) 31 (0.52%) Cytology group 5808 (5721) 24 (0.41%) 6 (0.10%) 30 (0.53%) RR (95%CI) 0.93 ( ) Phase ( ) 1.00 ( ) HPV group 6937 (6395) 44 (0.63%) 2 (0.03%) 46 (0.66%) Cytology group 6788 (6629) 11 (0.16%) 10 (0.15%) 21 (0.31%) RR (95%CI) 3.91 ( ) P heterogeneity between phases Ronco et al. Lancet Oncol 2010 modif 0.21 ( ) 2.14 ( )

12 NTCC STUDY WOMEN AGE DETECTION OF CIN2 BY STUDY PERIOD Women enrolled (invited to round 2) screening round1 N (%) screening round2 N (%) Total over both rounds N (%) HPV group (12035) 126 (0.97%) 8 (0.07%) 134 (1.04%) Cytology group (12350) 27 (0.21%) 15 (0.12%) 42 (0.33%) RR (95%CI) 4.54 ( ) 0.55 ( ) 3.11 ( ) P heterogeneity between phases Ronco et al. Lancet Oncol 2010 modif

13 Conclusioni Test HPV da solo come test primario triage citologico delle HPV positive intervalli di screening prolungati (almeno 5 anni per le HPV-) Non iniziare lo screening con HPV prima dei 35 anni

14 Necessità di ricerca Definire gli intervalli di screening ottimali Età ottimale di inizio (e fine) Ottimizzazione della gestione delle donne HPV positive (biomarkers) accuratezza trasversale per hgcin (invio in colposcopia) rischio futuro di hgcin (frequenza di retesting) Marker di progressione da CIN a Ca (trattamento)

15 Adozione consigliabile se si può garantire l applicazione di protocolli adeguati (entro programmi organizzati) Programmi pilota avviati entro programmi organizzati in Piemonte (Torino e Ivrea) e altre regioni. Obiettivi: Preparare la transizione verso l adozione routinaria Mettere a punto metodi e strumenti Valutare costi Valutare impatto sull adesione

16 Turin (CPO Piemonte) G. Ronco N. Segnan A.Gillio-Tos L. De Marco B. Ghiringhello F. Parisio R.Volante R. Rizzolo S.Patriarca Veneto M. Zorzi AR Delmistro D. Minucci G. Nardo M. Lestani L. Onnis M. Matteucci A. Vignato Emilia Romagna C. Naldoni GP. Casadei S. Folicaldi A. Bondi P. Schincaglia M. Serafini M. Manfredi C. Sintoni P. Pierotti G. Collina M. Aldi G. Galanti London (Cancer Research UK) J Cuzick Florence (CSPO) M. Confortini F. Carozzi M. Zappa A. Iossa S. Ciatto MP. Cariaggi S. Cecchini C. Sani GL. Taddei Trento P. Dalla Palma A. Pojer E. Polla S. Girlando D. Aldovini Lazio S. Brezzi P. Giorgi-Rossi A. Pellegrini P. Raggi E. Gomes ML. Schiboni