Stephen Friend: The hunt for "unexpected genetic heroes"

62,564 views ・ 2014-05-29

TED


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Approximately 30 years ago,
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when I was in oncology at the Children's Hospital
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in Philadelphia,
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a father and a son walked into my office
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and they both had their right eye missing,
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and as I took the history, it became apparent
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that the father and the son had a rare form
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of inherited eye tumor, retinoblastoma,
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and the father knew that he had passed that fate
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on to his son.
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That moment changed my life.
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It propelled me to go on
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and to co-lead a team that discovered
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the first cancer susceptibility gene,
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and in the intervening decades since then,
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there has been literally a seismic shift
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in our understanding of what goes on,
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what genetic variations are sitting behind
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various diseases.
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In fact, for thousands of human traits,
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a molecular basis that's known for that,
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and for thousands of people, every day,
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there's information that they gain
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about the risk of going on to get this disease
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or that disease.
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At the same time, if you ask,
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"Has that impacted the efficiency,
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how we've been able to develop drugs?"
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the answer is not really.
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If you look at the cost of developing drugs,
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how that's done, it basically hasn't budged that.
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And so it's as if we have the power to diagnose
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yet not the power to fully treat.
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And there are two commonly given reasons
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for why that happens.
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One of them is it's early days.
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We're just learning the words, the fragments,
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the letters in the genetic code.
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We don't know how to read the sentences.
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We don't know how to follow the narrative.
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The other reason given is that
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most of those changes are a loss of function,
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and it's actually really hard to develop drugs
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that restore function.
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But today, I want us to step back
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and ask a more fundamental question,
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and ask, "What happens if we're thinking
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about this maybe in the wrong context?"
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We do a lot of studying of those who are sick
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and building up long lists
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of altered components.
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But maybe, if what we're trying to do
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is to develop therapies for prevention,
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maybe what we should be doing
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is studying those who don't get sick.
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Maybe we should be studying those
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that are well.
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A vast majority of those people
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are not necessarily carrying a particular
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genetic load or risk factor.
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They're not going to help us.
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There are going to be those individuals
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who are carrying a potential future risk,
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they're going to go on to get some symptom.
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That's not what we're looking for.
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What we're asking and looking for is,
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are there a very few set of individuals
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who are actually walking around
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with the risk that normally would cause a disease,
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but something in them, something hidden in them
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is actually protective
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and keeping them from exhibiting those symptoms?
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If you're going to do a study like that, you can imagine
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you'd like to look at lots and lots of people.
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We'd have to go and have a pretty wide study,
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and we realized that actually
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one way to think of this is,
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let us look at adults who are over 40 years of age,
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and let's make sure that we look at those
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who were healthy as kids.
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They might have had individuals in their families
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who had had a childhood disease,
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but not necessarily.
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And let's go and then screen those
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to find those who are carrying genes
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for childhood diseases.
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Now, some of you, I can see you
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putting your hands up going, "Uh, a little odd.
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What's your evidence
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that this could be feasible?"
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I want to give you two examples.
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The first comes from San Francisco.
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It comes from the 1980s and the 1990s,
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and you may know the story where
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there were individuals who had very high levels
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of the virus HIV.
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They went on to get AIDS.
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But there was a very small set of individuals
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who also had very high levels of HIV.
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They didn't get AIDS.
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And astute clinicians tracked that down,
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and what they found was they were carrying mutations.
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Notice, they were carrying mutations from birth
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that were protective, that were protecting them
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from going on to get AIDS.
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You may also know that actually a line of therapy
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has been coming along based on that fact.
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Second example, more recent, is elegant work
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done by Helen Hobbs,
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who said, "I'm going to look at individuals
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who have very high lipid levels,
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and I'm going to try to find those people
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with high lipid levels
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who don't go on to get heart disease."
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And again, what she found was
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some of those individuals had mutations
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that were protective from birth that kept them,
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even though they had high lipid levels,
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and you can see this is an interesting way
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of thinking about how you could develop
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preventive therapies.
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The project that we're working on
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is called "The Resilience Project:
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A Search for Unexpected Heroes,"
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because what we are interested in doing is saying,
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can we find those rare individuals
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who might have these hidden protective factors?
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And in some ways, think of it as a decoder ring,
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a sort of resilience decoder ring
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that we're going to try to build.
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We've realized that we should do this in a systematic way,
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so we've said, let's take every single
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childhood inherited disease.
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Let's take them all, and let's pull them back a little bit
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by those that are known to have severe symptoms,
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where the parents, the child,
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those around them would know
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that they'd gotten sick,
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and let's go ahead and then frame them again
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by those parts of the genes where we know
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that there is a particular alteration
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that is known to be highly penetrant
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to cause that disease.
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Where are we going to look?
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Well, we could look locally. That makes sense.
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But we began to think, maybe we should look
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all over the world.
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Maybe we should look not just here
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but in remote places where their might be
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a distinct genetic context,
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there might be environmental factors
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that protect people.
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And let's look at a million individuals.
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Now the reason why we think it's a good time
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to do that now
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is, in the last couple of years,
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there's been a remarkable plummeting in the cost
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to do this type of analysis,
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this type of data generation,
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to where it actually costs less to do
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the data generation and analysis
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than it does to do the sample processing and the collection.
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The other reason is that in the last five years,
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there have been awesome tools,
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things about network biology, systems biology,
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that have come up that allow us to think
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that maybe we could decipher
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those positive outliers.
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And as we went around talking to researchers
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and institutions
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and telling them about our story,
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something happened.
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They started saying, "This is interesting.
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I would be glad to join your effort.
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I would be willing to participate."
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And they didn't say, "Where's the MTA?"
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They didn't say, "Where is my authorship?"
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They didn't say, "Is this data going to be mine? Am I going to own it?"
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They basically said, "Let's work on this
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in an open, crowd-sourced, team way
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to do this decoding."
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Six months ago, we locked down
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the screening key for this decoder.
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My co-lead, a brilliant scientist, Eric Schadt
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at the Icahn Mount Sinai School of Medicine in New York,
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and his team,
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locked in that decoder key ring,
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and we began looking for samples,
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because what we realized is,
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maybe we could just go and look
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at some existing samples to get some sense of feasibility.
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Maybe we could take two, three percent of the project on,
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and see if it was there.
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And so we started asking people
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such as Hakon at the Children's Hospital in Philadelphia.
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We asked Leif up in Finland.
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We talked to Anne Wojcicki at 23andMe,
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and Wang Jun at BGI,
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and again, something remarkable happened.
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They said, "Huh,
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not only do we have samples,
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but often we've analyzed them,
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and we would be glad to go into
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our anonymized samples
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and see if we could find those
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that you're looking for."
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And instead of being 20,000 or 30,000,
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last month we passed one half million samples
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that we've already analyzed.
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So you must be going,
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"Huh, did you find any unexpected heroes?"
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And the answer is, we didn't find one or two.
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We found dozens of these strong candidate
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unexpected heroes.
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So we think that the time is now
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to launch the beta phase of this project
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and actually start getting prospective individuals.
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Basically all we need is information.
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We need a swab of DNA
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and a willingness to say, "What's inside me?
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I'm willing to be re-contacted."
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Most of us spend our lives,
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when it comes to health and disease,
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acting as if we're voyeurs.
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We delegate the responsibility
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for the understanding of our disease,
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for the treatment of our disease,
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to anointed experts.
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In order for us to get this project to work,
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we need individuals to step up
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in a different role and to be engaged,
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to realize this dream,
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this open crowd-sourced project,
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to find those unexpected heroes,
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to evolve from the current concepts
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of resources and constraints,
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to design those preventive therapies,
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and to extend it beyond childhood diseases,
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to go all the way up to ways
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that we could look at Alzheimer's or Parkinson's,
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we're going to need us
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to be looking inside ourselves and asking,
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"What are our roles?
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What are our genes?"
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and looking within ourselves for information
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we used to say we should go to the outside,
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to experts,
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and to be willing to share that with others.
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Thank you very much.
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(Applause)
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