os ensaios clínicos na era da medicina de...
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Os Ensaios Clínicos na era da
Medicina de Precisão
Clinical Trials in Medicine Precision era
Health Cluster Portugal, CCAB, Braga , 20 de Abril, 2016
Manuel Sobrinho Simões
Ipatimup/i3S, Faculdade de Medicina e CHSJoão, Porto, Portugal
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Ensaios clínicos em Portugal (2012)
• Uma das mais baixas taxas por milhão de habitantes na Europa
Ocidental
• Investimento de 36 milhões de euros com 3,5 milhões de poupanças na
despesa pública em medicamentos e meios complementares de
diagnóstico
• VAB global de 72 milhões de euros com retorno de 2€ por cada 1€
investido
CEIC & CNPD Faltam: Ensaios clínicos de
fase 1 e Ensaios clínicos de
iniciativa dos investigadores
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There is lack of
understanding in general
Curing vs Understanding
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DOENÇAS CIVILIZACIONAIS &
EMERGENTES
OBESIDADE
DIABETES
S.I.D.A.
TUBERCULOSE
CANCRO
DEPRESSÃO
D.NEURODEGENERATIVAS
PAT GERIÁTRICA
....................................
MEDICAMENTOS
DISPOSITIVOS
PROCESSOS
…………………
ENVELHECIMENTO
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Future of Health Sciences Research
Basic research
Clinical trials and
Translational research
Clinical
practice
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Plagues Tuberculosis Cardiovascular
diseases Cancer Neurodegenerative
diseases
Middle Age
XXI Century
Genomics
Postgenomics
Metagenomics
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Modern medicine
Microbes maketh man
People are not just people. They are an awful lot of
microbes, too
Aug 18th 2012 | from the print edition
METAGENOMICS
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WHO ARE WE? Highly dynamic multicellular “super-
organisms” with huge turnover rates at
intracellular components (e.g. proteins), and
at the regeneration level (e.g. bone marrow,
oral mucosa, digestive tract, skin,…).
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The human genome has been deciphered
Hail to Personalized Medicine
The biggest mistake of the century!
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Personalized medicine: temper expectations.
Nebert DW, Zhang G. Science 337(6097):910, 2012
(De)Personalized Medicine
Ralph I. Horwitz, Mark R. Cullen, Jill Abell, Jennifer B. Christian
Science Vol. 339 no. 6124 pp. 1155-1156, 2013
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Evidence based medicine
Personalized medicine
Precision medicine
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NIH opens precision medicine study to nation
Panel's plan would allow anyone living in the United States to join million-strong effort.
Kaiser J. Science, 2015
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The “brave new world” of clinical
trials
One-person clinical trials
Adaptive clinical trials
The New York Review of Books, March 2016
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IMPRECISION
MEDICINE !
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The flexible approach at the NCI, modifying a treatment in real
time, is anathema to many clinical researchers.
Constantly shifting variables, like dose and timing of drugs,
makes it difficult to accurately assess either benefits or side
effects.
It also requires great trust in the probity of the clinicians
conducting the trial—trust that they are able to make the right
decisions as they alter the protocols as they go along.
Adaptive Clinical Trials
Review of The Death of Cancer by DeVita Jr. and DeVita-Raeburn
The New York Review of Books, March 2916
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Traditionally, the FDA has rejected such an approach,
requiring that a set protocol be carried through to its
prescribed end. (Recently, the FDA has stated it is open to
considering adaptive trials in approving new drugs.)
In addition to adaptive clinical trials, DeVita believes in
individual innovation; he writes that an oncologist should be
free to draw on preliminary data and employ an agent not yet FDA-approved for a specific cancer.
Review of The Death of Cancer by DeVita Jr. and DeVita-Raeburn
The New York Review of Books, March 2916
Adaptive Clinical Trials
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Most promising strategies to control
advanced cancer particularly
appropriated for one-person clinical trials
• To turn the immunological system able to
recognize and to “kill” the cancer cells
• To induce cancer cells apoptosis
• To block cancer cells increased motility and
invasibility
Manuel Sobrinho-Simões, 2015
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OPPORTUNITIES & RISKS IMMUNOTHERAPY, LIQUID BIOPSIES, OVERDIAGNOSIS & OVERTREATMENT,...
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Jocelyn Kaiser, Science 18 March, 2016
Liquid biopsies Tests of blood-borne DNA pinpoint tissue damage
Assays spot cell
death from
diabetes, cancer,
and more….
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Era já possivel analisar a
presença no sangue de
células neoplásicas e de
moléculas de DNA e RNA
livres
Os exossomas potenciaram
este tipo de análises
Sonia Melo et al Cancer Cell, 2014 Dr Andrejs Liepins/Science Photo Library
Biopsias líquidas
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RISKS: Overdiagnosis & Overtreatment
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Herton Escobar, Science, 1 April 2016
RISKS Brazil president signs law legalizing renegade cancer pill
The congress voted to legalize the production and distribution of
synthetic phosphoethanolamine, even though the putative cancer
drug has not been clinically tested or registered with the Brazilian
Health Surveillance Agency.
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Phenotypic Drug Discovery
Striving towards the highest level of
biological relevance
John Comley, Drug Discovery World Winter 2015/16
Currently there is a resurgence in interest in PDD, driven by
many factors, not least the limited success of target-based drug
discovery.
It should always include an attempt to understand
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Conselho Nacional dos Centros Académicos Clínicos
Centros de
Saúde de
última geração
Faculdade de Medicina
Hospitais afiliados
Hospital Universitário
Instituto de Investigação
Futura(?) Agência de Investigação Clínica e Inovação Biomédica
Resoluções do C.Ministros, 24 de Março, 2016
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Estratégias mais promissoras para
conseguir controlar cancros avançados
• Induzir o suicídio das célula cancerosas
• Bloquear a sua motilidade e invasibilidade
• Adestrar o sistema imunitário no sentido de o
tornar capaz de reconhecer e destruir as células
cancerosas (Imunoterapia)
Manuel Sobrinho-Simões, 2015
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Successful therapies using L-asparaginase-
induced asparagine deprivation have been
developed for acute lymphoblastic leukaemia
Richards and Kilberg, Annu Rev Biochem 75:629, 2006
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Certain types of cancer cells depend on leucine,
glycine, suine and glatamine metabolism to proliferate
and/or survive (block apoptosis)
Sheen JH et al, Cancer Cell 19:613, 2011
Jain M et al, Science 336:1040, 2012
Maddocks OD et a,l Nature 493:542, 2013
Son J et al, Nature 496:101, 2013
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Developmental biologist Kathy Niakan has received permission from U.K. authorities to
modify human embryos using CRISPR/Cas9 gene-editing technology.
A U.K. researcher has gotten a green light to modify
human embryos (pictured, 4 days after fertilization).
Scientist can
edit human
embryos
Science, 5 February 2016
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Healthy aging: The ultimate preventative medicine
Matt Kaeberlein, Peter S. Rabinovitch, George M. Martin
Age is the greatest risk factor for nearly every
major cause of mortality in developed nations.
“It is clear that directly targeting aging is theoretically superior to
treating individual chronic diseases, but until recently, translational
approaches to achieve this goal have been just that – purely
theoretical”
Science, 4 December 2015 – Vol 350
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Blackburn EH, Epel ES, Lin J , Science, Dec 4, 2015.
Human telomere biology: A contributory and interactive factor in aging, disease risks, and protection
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The biggest problem
The GENOME has been deciphered
Hail to PRECISION MEDICINE!
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Two main paradigms for understanding human
diseases including cancer
1. Core biological processes associated with a disease are driven
by responses to changes in a small number of genes
2. Disease states are considered as emergent properties of
molecular networks originating from a very complex interplay
between constellations of changes in DNA and a broad range of
factors such as diet, age, gender and exposure to environmental
toxins.
Chen et al Nature 452:429, 2008
Schadt EE, Nature, September 10, 2009
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Cancer cells can ‘infect’ normal neighbours Editorial Science, 23 October 2014 Heidi Ledford Tiny RNAs shed by tumours can transform healthy cells into cancerous ones. Sonia Melo et al Cancer Cell, 2014
A cancer cell (yellow) sheds membrane vesicles. When a cancer cell throws out its trash, it can turn healthy neighbours into fellow tumour cells, researchers have found. Dr Andrejs Liepins/Science Photo Library
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A cancer legacy
Once viewed as tragic anomalies, many childhood cancers
may have their roots in inherited mutations
Jennifer Couzin-Frankel, Science 29 Jan 2016
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Surgery, Pathology and Oncology
in the Precision Medicine Era
• Huge amount of new informations
• Pressure to predict
• Very complex decision-making procedure
Manuel Sobrinho-Simões, 2010
Need to integrate the molecular data into the
clinical and anatomopathologic context.
Please read: need to understand and to
focus in single patients
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GENE – ENVIRONMENT INTERACTION
Genotype Environment
Height Longevity
Diseases
Phenotype
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lincRNAs
siRNAs
miRNAs
TRANSPOSONS
PSEUDO-GENES
DNA RNA PROTEIN 20,000 genes 100,000 mRNAs 2,000,000 proteins
EPIGENETICS
GENETICS
POSTGENOMICS
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MUDANÇA DO PARADIGMA
Medicina baseada Medicina
na evidência personalizada/estratificada
para a população-alvo
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Genomics
The future of health care: Making informed
decisions in the age of genomic medicine Henry T. Greely. Science, 2015