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Extended long – term follow up of the IBIS-I breast cancer prevention trial Dr. Jack Cuzik Ivana...

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Extended long – term follow up of the IBIS-I breast cancer prevention trial Dr. Jack Cuzik Ivana Sestak, Simon Cawthorn, Hishman Hamed, Kaija Holli, Anthony Howell, John F. Forbes, on behalf of the IBIS-I Investigators Dr. Jack Cuzik
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Page 1: Extended long – term follow up of the IBIS-I breast cancer prevention trial Dr. Jack Cuzik Ivana Sestak, Simon Cawthorn, Hishman Hamed, Kaija Holli, Anthony.

Extended long – term follow up of the IBIS-I breast cancer prevention trialDr. Jack CuzikIvana Sestak, Simon Cawthorn, Hishman Hamed, Kaija Holli, Anthony Howell, John F. Forbes, on behalf of the IBIS-I Investigators

Dr. Jack Cuzik

Page 2: Extended long – term follow up of the IBIS-I breast cancer prevention trial Dr. Jack Cuzik Ivana Sestak, Simon Cawthorn, Hishman Hamed, Kaija Holli, Anthony.

Prof.Dr. Aníbal R. Núñez De Pierro

Seguimiento extendido a largo plazo del estudio IBIS-I de prevención del cáncer de mamaDr. Jack CuzikIvana Sestak, Simon Cawthorn, Hishman Hamed, Kaija Holli, Anthony Howell, John F. Forbes, en nombre de los investigadores del IBIS-I

Page 3: Extended long – term follow up of the IBIS-I breast cancer prevention trial Dr. Jack Cuzik Ivana Sestak, Simon Cawthorn, Hishman Hamed, Kaija Holli, Anthony.

San Antonio Breast Cancer – Cancer Therapy and Research Center at UT Health Science Center – December 9-13, 2014

1975 1980 1985 1990 2000 2008 20120

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600,000

800,000

1,000,000

1,200,000

1,400,000

1,600,000

1,800,000

Breast Colorectal Cervix Lung GLOBOCAN 2012

Incidencia creciente del cáncer de mama en todo el mundo

PulmónCérvixColorrectalMama

San Antonio Breast Cancer Symposium, December 9-13 2014

Page 4: Extended long – term follow up of the IBIS-I breast cancer prevention trial Dr. Jack Cuzik Ivana Sestak, Simon Cawthorn, Hishman Hamed, Kaija Holli, Anthony.

San Antonio Breast Cancer – Cancer Therapy and Research Center at UT Health Science Center – December 9-13, 2014

Estudio IBIS-I: diseño

5 años

16.0 años

Ma seguimientoMujeres Alto Riesgo (n = 7,154)

Tamoxifen (n=3,579)

Placebo (n=3,575)

Objetivos: Primario: Incidencia de Cáncer de Mama (incl. CDIS) Secundarios: Otros cánceres, Mortalidad por CM, Mortalidad cualquier causa, Eventos adversos

San Antonio Breast Cancer Symposium, December 9-13 2014

Page 5: Extended long – term follow up of the IBIS-I breast cancer prevention trial Dr. Jack Cuzik Ivana Sestak, Simon Cawthorn, Hishman Hamed, Kaija Holli, Anthony.

San Antonio Breast Cancer – Cancer Therapy and Research Center at UT Health Science Center – December 9-13, 2014

Placebo(n = 3,575)

Tamoxifen(n = 3,579)

Edad media (años) 50.8 50.8

BMI media (Kg/m2) 26.9 27.0

Postmenopáusicas (%) 53.7% 54.1%

Uso de THR

Durante estudio 39.5% * 40.9%

Ex-usuarias 10.6% 11.2%

Nunca usuarias 49.5% 47.7%

Histerectomizadas 35.9% 34.4%

Características Basales

San Antonio Breast Cancer Symposium, December 9-13 2014

* Equivocado en el original: dice 49.5%. Corresponde: 1414/3575=39,5%

Page 6: Extended long – term follow up of the IBIS-I breast cancer prevention trial Dr. Jack Cuzik Ivana Sestak, Simon Cawthorn, Hishman Hamed, Kaija Holli, Anthony.

San Antonio Breast Cancer – Cancer Therapy and Research Center at UT Health Science Center – December 9-13, 2014

02

46

810

1214

3579 3542 3495 3446 3385 3344 3293 2890 1918 748 168Tamoxifen

3575 3527 3474 3410 3358 3296 3239 2850 1901 725 165Placebo

Number at risk

0 2 4 6 8 10 12 14 16 18 20

Follow-up time (years)

Cum

ula

tive

inci

denc

e (%

)

7.8%

12.3%

T vs. P HR (95% CI)

All 251 vs 350 0.71 (0.60-0.83)

Invasive ER+ 160 vs 238 0.66 (0.54-0.81)

PlaceboTamoxifen

- 4.5%NNT 22

Incidencia acumulativa de todos los cánceres de mama

6.3%

4.6%

San Antonio Breast Cancer Symposium, December 9-13 2014

Page 7: Extended long – term follow up of the IBIS-I breast cancer prevention trial Dr. Jack Cuzik Ivana Sestak, Simon Cawthorn, Hishman Hamed, Kaija Holli, Anthony.

San Antonio Breast Cancer – Cancer Therapy and Research Center at UT Health Science Center – December 9-13, 2014

02

46

810

1214

3579 3542 3495 3446 3385 3344 3293 2890 1918 748 168Tamoxifen

3575 3527 3474 3410 3358 3296 3239 2850 1901 725 165Placebo

Number at risk

0 2 4 6 8 10 12 14 16 18 20

Follow-up time (years)

Cum

ula

tive

inci

denc

e (%

)

6.3%

4.6%

3.3%

6.3%

T vs. P HR (95% CI)

All 163 vs 226 0.72 (0.59-0.88)

Invasive ER+

100 vs 145 0.68 (0.53-0.88)

T vs. P HR (95% CI)

All 88 vs 124 0.70 (0.53-0.91)

Invasive ER+

60 vs 93 0.63 (0.45-0.87)

PlaceboTamoxifen

- 1.7%- 3.0%

Incidencia acumulativa de todos los cánceres de mama

San Antonio Breast Cancer Symposium, December 9-13 2014

Page 8: Extended long – term follow up of the IBIS-I breast cancer prevention trial Dr. Jack Cuzik Ivana Sestak, Simon Cawthorn, Hishman Hamed, Kaija Holli, Anthony.

San Antonio Breast Cancer – Cancer Therapy and Research Center at UT Health Science Center – December 9-13, 2014

Hazard ratio0.3 0.5 1 2

Todas las mujeres

0.71

Todos los Ca.Mama

CDIS

Cáncer Invasor

Invasor RE-pos

Invasor RE-neg

10+ años

0-10 años

Cáncer de Mama - SubgruposSan Antonio Breast Cancer Symposium, December 9-13 2014

Page 9: Extended long – term follow up of the IBIS-I breast cancer prevention trial Dr. Jack Cuzik Ivana Sestak, Simon Cawthorn, Hishman Hamed, Kaija Holli, Anthony.

San Antonio Breast Cancer – Cancer Therapy and Research Center at UT Health Science Center – December 9-13, 2014

Hazard ratio

0.5 1 2

Todas las mujeres

Durante el estudio

Nunca/Ex-usuarias

>50

≤50

Edad

THR

0.71

Subgrupos Basales

p=0.04

0.3

10+ años

0-10 años

San Antonio Breast Cancer Symposium, December 9-13 2014

Page 10: Extended long – term follow up of the IBIS-I breast cancer prevention trial Dr. Jack Cuzik Ivana Sestak, Simon Cawthorn, Hishman Hamed, Kaija Holli, Anthony.

San Antonio Breast Cancer – Cancer Therapy and Research Center at UT Health Science Center – December 9-13, 2014

Otros Cánceres

Placebo(n= 3,575)

Tamoxifen (n = 3,579) D OR (CI95%) p

TOTAL 315 (8.8%) 351 (9.8%) +36 1.13 (0.96-1.32) 0.15

Endometrio 20 29 +9 1.45 (0.79-2.71) 0.19

Piel No-melanoma 84 116 +32 1.39 (1.04-1.87) 0.022

Todos otrosColorrectal

21047

20635

-4-12

1.02 (0.83-1.25) 0.74 (0.46-1.18) 0.18

Eventos Adversos

Eventos No-Cáncer

Placebo(n= 3,575)

Tamoxifen (n = 3,579) D OR (CI95%)

Emb.Pulmón 22 30 +8 1.37 (0.76-2.49)

TVP 23 40 +17 1.75 (1.02-3.06)

Inf.Miocardio 17 13 -4 0.76 (0.34-1.67)

ACV 28 30 +2 1.07 (0.62-1.86)

San Antonio Breast Cancer Symposium, December 9-13 2014

Page 11: Extended long – term follow up of the IBIS-I breast cancer prevention trial Dr. Jack Cuzik Ivana Sestak, Simon Cawthorn, Hishman Hamed, Kaija Holli, Anthony.

San Antonio Breast Cancer – Cancer Therapy and Research Center at UT Health Science Center – December 9-13, 2014

Placebo(n= 3,575)

Tamoxifen (n = 3,579) D OR (CI95%)

TOTAL 166 (4.6%) 182 (5.1%) +16 1.10 (0.88-1.37)

Ca.Mama 26 (0.7%) 31 (0.9%) +5 1.19 (0.68-2.10)

Ca.Endometrio 0 5 +5 p = 0.06

Otros cánceres 78 83 +5 1.06 (0.77-1.47)

Cardíacas 14 12 -2

TVP/EP 3 4 +1

ACV 12 10 -2

Otras 33 37 +4

Muertes

San Antonio Breast Cancer Symposium, December 9-13 2014

NS

Page 12: Extended long – term follow up of the IBIS-I breast cancer prevention trial Dr. Jack Cuzik Ivana Sestak, Simon Cawthorn, Hishman Hamed, Kaija Holli, Anthony.

San Antonio Breast Cancer – Cancer Therapy and Research Center at UT Health Science Center – December 9-13, 2014

Síntesis

• Luego de 20 años de seguimiento, los resultados muestran un claro beneficio a largo plazo de TAM para prevenir el CM:

- Todos los CM 7.8% vs. 12.3% [D -4.5%] - Invasores, ER+ 4.9% vs. 8.3% [D -3.4%]

NNT: Todos los CM 22Invasores, ER+ 29

• Mayor beneficio para mujeres que NO recibieron THR durante el estudio (38% vs. 12%, p = 0.04)

#1

San Antonio Breast Cancer Symposium, December 9-13 2014

Page 13: Extended long – term follow up of the IBIS-I breast cancer prevention trial Dr. Jack Cuzik Ivana Sestak, Simon Cawthorn, Hishman Hamed, Kaija Holli, Anthony.

San Antonio Breast Cancer – Cancer Therapy and Research Center at UT Health Science Center – December 9-13, 2014

Síntesis

• Sin reducción en la mortalidad específica (ME) para CM: Luego de 10 años se observó: - Aumento en la ME [no significativo] con TAM - Aumento en [incidencia] CM ER-neg • Luego de 10 años no aumentó la mortalidad global (95 vs.96) - Aumento no significativo en muertes por ca. endometrio (5 vs. 0 ; p=0.06 )

• Claro beneficio de TAM en la reducción de la incidencia de CM, pero incertidumbre respecto al impacto en la mortalidad

#2

San Antonio Breast Cancer Symposium, December 9-13 2014

Page 14: Extended long – term follow up of the IBIS-I breast cancer prevention trial Dr. Jack Cuzik Ivana Sestak, Simon Cawthorn, Hishman Hamed, Kaija Holli, Anthony.

Publicación post SABCSLancet Oncology, 2015; 16:67-75

Page 15: Extended long – term follow up of the IBIS-I breast cancer prevention trial Dr. Jack Cuzik Ivana Sestak, Simon Cawthorn, Hishman Hamed, Kaija Holli, Anthony.

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