WEBVTT - Targeting IgA Nephropathy (Sponsored Content)

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<v Speaker 1>Since you're a subscriber to this Bloomberg podcast, we thought

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<v Speaker 1>you'd be interested in a six episode sponsored podcast called

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<v Speaker 1>Targeting the Toughest Diseases produced by Vertex Pharmaceuticals and Bloomberg

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<v Speaker 1>Media Studios. It explores the innovative tools, methods, and unique

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<v Speaker 1>philosophy Vertex Pharmaceuticals is using to search for treatments for

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<v Speaker 1>some of humanity's most challenging diseases. Here's a recent episode.

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<v Speaker 2>Two year olds are a handful. They're full of energy

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<v Speaker 2>and full of laughter. A lot of work for sure,

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<v Speaker 2>but also a source of joy.

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<v Speaker 3>I definitely feel my calling in life was to be

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<v Speaker 3>a mother, and I just feel so blessed to be

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<v Speaker 3>able to have that opportunity to have a child. So

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<v Speaker 3>it's been great.

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<v Speaker 2>That's Rachel Benton, also known as Stetson's.

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<v Speaker 3>Small Stetson is his name, Stetson Corey Benton. I've always

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<v Speaker 3>liked unique names. I never knew of anyone named Stetson before.

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<v Speaker 2>The thing about Stetson is, and he doesn't even know

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<v Speaker 2>this yet, but he may have already saved his mom's life.

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<v Speaker 2>A routine medical test that Rachel only took because she

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<v Speaker 2>was pregnant showed protein in her urine That led to

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<v Speaker 2>further tests, a biopsy, and eventually a phone call delivering

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<v Speaker 2>a diagnosis. It was a.

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<v Speaker 3>Pretty quick conversation. We know it is igiena fhropathy. It's

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<v Speaker 3>a rare kidney disease. There is not a cure. We

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<v Speaker 3>don't have a cause.

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<v Speaker 2>The call was short, but for Rachel it changed everything. Hi.

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<v Speaker 2>I'm Jordan Gospore, a member of the University of Southern

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<v Speaker 2>California's Center for Health Journalism. This is Targeting the Toughest

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<v Speaker 2>Diseases a podcast produced by Bloomberg Media Studios and Vertex Pharmaceuticals.

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<v Speaker 2>In this series, we look at some of humanity's most

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<v Speaker 2>challenging diseases and how Vertex, a Boston based biotech company,

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<v Speaker 2>is using innovative tools, methods, and a unique philosophy to

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<v Speaker 2>search for treatments and cures. Today, we're looking at immunoglobulin

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<v Speaker 2>A nephropathy, more commonly known as IgA nephropathy. It's a

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<v Speaker 2>progressive chronic kidney disease that, for too long, was underreported

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<v Speaker 2>and under researched. We'll talk to experts inside and outside

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<v Speaker 2>of Vertex about the latest work being done in this field,

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<v Speaker 2>But first back to Rachel's story. At the age of thirty,

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<v Speaker 2>Rachel bent and was living a great life. She was

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<v Speaker 2>a licensed mortgage broker running her own agency. She owned

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<v Speaker 2>her own house, and that fall she decided to throw

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<v Speaker 2>a big Halloween.

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<v Speaker 3>Party and he came with one of our mutual friends

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<v Speaker 3>and we sort of rekindled from there.

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<v Speaker 2>He was Tom, a guy she had dated on and

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<v Speaker 2>off during her twenties.

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<v Speaker 3>And then it was the end of November of twenty

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<v Speaker 3>twenty that he asked me to marry him.

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<v Speaker 2>A year later, they got married, and shortly after that,

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<v Speaker 2>Rachel got pregnant. During her pregnancy, Rachel had regular medical checkups,

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<v Speaker 2>including routine yearine tests.

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<v Speaker 3>We did a yearine test, a twenty four hour year

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<v Speaker 3>in test, and that's where you have to take this

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<v Speaker 3>big jug home and you have to peece straight into

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<v Speaker 3>this jug every time for twenty four hours. And so

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<v Speaker 3>I bring it to the doctor and they test it,

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<v Speaker 3>and sure enough, they found protein in my earn.

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<v Speaker 2>The doctor told her she wasn't facing any immediate risk,

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<v Speaker 2>so they agreed to put that result aside, focus on

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<v Speaker 2>having a healthy baby, and that they would investigate further

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<v Speaker 2>once the baby was born Stetson. Corey Benton was born

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<v Speaker 2>in May and as a new parent, Rachel's life instantly

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<v Speaker 2>became a whirlwind.

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<v Speaker 3>Honestly, I completely even forgot about the kidney stuff.

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<v Speaker 2>But around the nine month mark she reached out to

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<v Speaker 2>her doctor. She retested her urine, which confirmed she still

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<v Speaker 2>had protein in her urine, so they decided to do

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<v Speaker 2>a kidney biopsy. A biopsy is where a doctor uses

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<v Speaker 2>a long needle to extract tiny pieces of tissue so

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<v Speaker 2>they can do further tests. Rachel got the results over

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<v Speaker 2>the phone.

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<v Speaker 3>And he's like, you know, we did confirm some things.

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<v Speaker 3>You have a rare kidney disease called IgA nephropathy or

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<v Speaker 3>I GAN. So my fir question was, you know, what

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<v Speaker 3>do I do now? How do I stop this? Is

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<v Speaker 3>there a cure?

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<v Speaker 2>You know?

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<v Speaker 3>Just thinking of anything, like what's the next steps? What

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<v Speaker 3>about medication? Blah blah blah.

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<v Speaker 2>And he's like, well, the answer to almost all of

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<v Speaker 2>her questions was we're not sure or it depends.

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<v Speaker 3>I got off the phone and just cried. I think

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<v Speaker 3>for probably two days straight. I just was overwhelmed with

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<v Speaker 3>obviously the diagnosis and not knowing where this would take

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<v Speaker 3>me in life. What the next You know, twenty four

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<v Speaker 3>hours would look like a year or ten years. You know,

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<v Speaker 3>how is this going to affect me in my day

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<v Speaker 3>to day life and my son and my husband.

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<v Speaker 2>She's adjusted her diet and takes medication to address her

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<v Speaker 2>blood pressure and cholesterol, but the progress of the disease

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<v Speaker 2>is variable. At one point, Rachel's kidney function dropped thirty

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<v Speaker 2>points over two months. The doctor told her that at

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<v Speaker 2>that rate, she'd be needing dialysis within a year. She's rebounded,

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<v Speaker 2>but she doesn't know if that recovery will hold. She

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<v Speaker 2>also deals with fatigue, not just new mom tiredness, but

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<v Speaker 2>debilitating fatigue, where she'll sleep for twelve hours and still

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<v Speaker 2>need a midday nap. In fact, Rachel says that for

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<v Speaker 2>a couple of years before her diagnosis, she was already

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<v Speaker 2>dealing with extreme tiredness, but never really considered it a

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<v Speaker 2>medical condition or something that needed attention. In hindsight, she

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<v Speaker 2>wishes she had gotten it checked out. Looking forward, her

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<v Speaker 2>long term health and her ability to be the kind

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<v Speaker 2>of mom she wants to be is uncertain.

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<v Speaker 3>I have my days where I just feel very, very

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<v Speaker 3>guilty being a other to him with a rare disease

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<v Speaker 3>and not knowing in a year, ten years, however long,

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<v Speaker 3>how I'm going to be and how active I get

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<v Speaker 3>to be in his life. Every day. I just try

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<v Speaker 3>to make the best of it though, and you know,

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<v Speaker 3>whatever he wants to do, I put on a smile

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<v Speaker 3>and try to push.

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<v Speaker 2>Through immunoglobulin A nephropathy or IGAN. It's not a high

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<v Speaker 2>profile disease. It's a pronic kidney disease that historically has

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<v Speaker 2>not been well understood, but that's changing.

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<v Speaker 4>So I do clinics, so I see patients with gramariala disease.

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<v Speaker 4>I run clinical trials, and I have my research work

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<v Speaker 4>at the university and the laboratory.

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<v Speaker 2>That's doctor Jonathan Barrett. He's based at the University of

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<v Speaker 2>Leicester in England and as a world renowned leader in

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<v Speaker 2>kidney research.

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<v Speaker 4>So most of my career, no one was really interested

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<v Speaker 4>in Nigeria property apart from a few people. Now it

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<v Speaker 4>is you can't move at a kidney meeting without people

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<v Speaker 4>talking about igenafropathy.

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<v Speaker 2>One reason it was so under researched is that in

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<v Speaker 2>the early stages, symptoms are often hard to detect.

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<v Speaker 4>Normally, the patients I see have no idea why they're

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<v Speaker 4>coming to see a kidney doctor.

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<v Speaker 2>In many cases, it starts with an asymptomatic person having

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<v Speaker 2>a urine test, like in Rachel's case, with a routine

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<v Speaker 2>urine test during pregnancy.

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<v Speaker 4>Perhaps you've joined a new gym, you get a physical,

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<v Speaker 4>so you want to get a mortgage. You might have

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<v Speaker 4>a job that requires you to have a physical and

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<v Speaker 4>someone dips your urine and they don't wait a minute,

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<v Speaker 4>there's blood and protein in here.

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<v Speaker 2>Here's what we do know about the disease.

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<v Speaker 4>So each kidney contains about a million filters and they

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<v Speaker 4>are continually filtering the blood to generate the urine, and

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<v Speaker 4>in igenafropathy, this protein called IgA starts sludging up those

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<v Speaker 4>filters and stopping them from working properly. And if the

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<v Speaker 4>filters don't work very well, they become leaky and blood

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<v Speaker 4>and protein can appear in the urine.

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<v Speaker 2>Over time, sometimes months, sometimes years, your kidney function declines.

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<v Speaker 4>Some patients do really well with igenafropathy, and others end

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<v Speaker 4>up on dialysis relatively quickly. And that's the bit we

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<v Speaker 4>haven't quite worked out yet.

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<v Speaker 2>In fact, we know the majority of adult patients with

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<v Speaker 2>igaafhropathy will progress to instage kidney disease, which requires them

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<v Speaker 2>to go on dialysis or get a transplant within twenty

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<v Speaker 2>years of diagnosis. Doctor Barrett says there is evidence of

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<v Speaker 2>a genetic component, but the connections aren't strong enough to

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<v Speaker 2>do genetic screening right now. The only way to diagnose

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<v Speaker 2>iganaphropathy is with the kidney biopsy.

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<v Speaker 4>But what we think is that the major driver for

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<v Speaker 4>this disease is the type of ida we normally produce

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<v Speaker 4>in our gut and in our respiratory tract that normally

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<v Speaker 4>gets into our sputum, into our tears, into our saliva.

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<v Speaker 4>It's there to stop bugs entering the body, and it

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<v Speaker 4>does a very very good job. But in igenic property,

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<v Speaker 4>some of that ida actually gets into the bloodstream. When

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<v Speaker 4>it's in the bloodstream, it's a bit out of place,

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<v Speaker 4>and it tends to stick to itself, to stick to

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<v Speaker 4>other proteins. There are antibodies in the circulation it sticks to,

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<v Speaker 4>and that forms these large what we call immune complexes,

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<v Speaker 4>which are essentially big aggregates of protein. If you've got

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<v Speaker 4>big globs of protein, it's completely reasonable to think that

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<v Speaker 4>those globs approtein are going to start clogging up the filter,

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<v Speaker 4>which is exactly what happens, and when they clog up

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<v Speaker 4>the filter, there's inflammation, they're scarring, and that's what eventually

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<v Speaker 4>causes kidney failure.

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<v Speaker 2>For people diagnosed with IgA nefhropathy. The biological effects are

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<v Speaker 2>only part of the problem.

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<v Speaker 4>The big challenge is actually the impact on mental wellness.

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<v Speaker 4>Because if you're a young person and I tell you

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<v Speaker 4>you've got this disease, it's incurable. There's a risk it

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<v Speaker 4>could cause kidney failure in the future, but I can't

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<v Speaker 4>tell you when you might need to go on diallasis

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<v Speaker 4>have you get your transplant, but I can't tell you when.

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<v Speaker 4>That sense of uncertainty can be absolutely devastating for young people.

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<v Speaker 4>You imagine developing your career, wanting to pay that big

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<v Speaker 4>amount of money for a house, getting married, thinking about children,

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<v Speaker 4>and you have this threat hanging over you of a

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<v Speaker 4>disease that the doctors can't really predict.

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<v Speaker 2>Addressing that fear and uncertainty requires showing patients there is

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<v Speaker 2>a way forward, and that's what the team at Vertex

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<v Speaker 2>is doing. Igienephropathy represents exactly the kind of medical problem

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<v Speaker 2>Vertex is targeting. There's a long history of research to

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<v Speaker 2>build on there's new technology available or Vertex thinks they

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<v Speaker 2>can develop it. There's a large unmet need, and Vertex

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<v Speaker 2>thinks it may be possible to tackle the underlying disease.

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<v Speaker 5>Simply put, Verticy's goal is to help people suffering from

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<v Speaker 5>serious diseases, and we do that by investing in the

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<v Speaker 5>scientific innovation to create what we believe could be truly

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<v Speaker 5>transformative medicines for people with these diseases.

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<v Speaker 2>That's Mark Bunnage. He's the head of research at Vertex

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<v Speaker 2>Pharmaceuticals and leads research on the company's pipeline of serious diseases.

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<v Speaker 5>Now, we focus on cause of human biology and on

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<v Speaker 5>human validated targets, and then we ask the question what's

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<v Speaker 5>the right approach to take, and we are completely metalitiagnostic.

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<v Speaker 5>We'll use whatever is the right tool in the toolbox

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<v Speaker 5>if you like, to address their biology and then to

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<v Speaker 5>come up with a transformative therapy.

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<v Speaker 2>Earlier, doctor Barrett explained how igianophropathy occurs. It's a build

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<v Speaker 2>up of what he calls big globs of protein that

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<v Speaker 2>deposit and cause injury to the filters in your kidneys.

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<v Speaker 2>But how can we stop that from happening. To answer that,

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<v Speaker 2>I sat down with doctor Maniche Maski. He's a board

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<v Speaker 2>certified nephrologist helping lead Vertex research into IgA nephropathy. Doctor

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<v Speaker 2>Maski explained that B cells, an important part of our

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<v Speaker 2>immune system to fight off infections, can lose control and

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<v Speaker 2>produce antibodies that hurt our own organs, in this case,

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<v Speaker 2>the kidneys. Can you tell us a little bit about

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<v Speaker 2>where the field is going and what's being done for

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<v Speaker 2>people living with IgA nephropathy.

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<v Speaker 6>Absolutely, we now understand that loss of B cell control

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<v Speaker 6>is what leads to the downstream mechanisms resulting in kidney

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<v Speaker 6>injury and kidney function loss. So lots of research has

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<v Speaker 6>been performed to try to understand what is influencing the

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<v Speaker 6>B cell to lose control. It turns out that two

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<v Speaker 6>proteins called Bath and april are key drivers.

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<v Speaker 2>Okay, so B cells are a type of white blood

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<v Speaker 2>cell that helps power our immune system. Can you tell

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<v Speaker 2>us a little bit more about what Bath and April

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<v Speaker 2>are and how they're involved in B cell control and

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<v Speaker 2>how all that relates to iganephropathy.

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<v Speaker 6>So, first, Jordan, you're absolutely right that B cells, when

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<v Speaker 6>they're doing what they're supposed to do, protect us from infections.

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<v Speaker 6>They make cand of bodies that help us neutralize various pathogens.

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<v Speaker 6>When B cells lose control, they can set off a

0:14:30.840 --> 0:14:36.200
<v Speaker 6>cascade of events that result in processes that harm the body,

0:14:36.320 --> 0:14:42.840
<v Speaker 6>so called autoimmune diseases. Bath and April are two similar

0:14:43.120 --> 0:14:47.960
<v Speaker 6>but distinct proteins that control the life cycle of the

0:14:48.000 --> 0:14:52.160
<v Speaker 6>B cell. So bath more in the early stage of

0:14:52.760 --> 0:14:55.440
<v Speaker 6>development and maturation of the B cell and april more

0:14:55.480 --> 0:14:59.120
<v Speaker 6>in the later stage of the B cell development all

0:14:59.120 --> 0:15:02.440
<v Speaker 6>the way through to becoming an antibody secreting cell. Bath

0:15:02.480 --> 0:15:07.160
<v Speaker 6>in april really seem to be two of the most

0:15:07.200 --> 0:15:12.520
<v Speaker 6>critical proteins driving this transition from something that would protect

0:15:12.600 --> 0:15:17.480
<v Speaker 6>us to something that would actually make antibodies that will

0:15:17.760 --> 0:15:19.080
<v Speaker 6>harm our native tissues.

0:15:21.120 --> 0:15:25.160
<v Speaker 2>This is a complex scenario. What's the innovative thinking that

0:15:25.280 --> 0:15:26.760
<v Speaker 2>Vertex is considering here.

0:15:27.840 --> 0:15:31.040
<v Speaker 6>We know that the levels of bath in april are

0:15:31.040 --> 0:15:34.440
<v Speaker 6>actually elevated in people with ig and ephropathy, and that

0:15:34.480 --> 0:15:38.160
<v Speaker 6>these levels correlate with measures of kidney function and damage.

0:15:38.320 --> 0:15:41.080
<v Speaker 6>So through that we believe both of these drivers are

0:15:41.160 --> 0:15:44.560
<v Speaker 6>involved in uncontrolled B cells. Not Bath alone and not

0:15:44.680 --> 0:15:47.480
<v Speaker 6>april alone. There's a need to cast the widest net

0:15:47.680 --> 0:15:51.960
<v Speaker 6>to catch the main actors involved in the pathogenesis of

0:15:52.000 --> 0:15:55.240
<v Speaker 6>IgA and nephropathy. What we hope to see with this

0:15:55.280 --> 0:15:59.320
<v Speaker 6>approach is the potential to restore immune balance for our

0:15:59.360 --> 0:16:04.080
<v Speaker 6>patients and give them the best chance at remission in

0:16:04.120 --> 0:16:06.960
<v Speaker 6>the protin area, which is the protein spilling in the

0:16:07.080 --> 0:16:10.000
<v Speaker 6>urine he maturia, which is the spilling of blood in

0:16:10.040 --> 0:16:13.880
<v Speaker 6>the urine with associated stabilization of kidney function.

0:16:16.920 --> 0:16:21.560
<v Speaker 2>For Rachel Benton, living with uncertainty has become a constant burden.

0:16:23.560 --> 0:16:27.760
<v Speaker 3>It really scares me. For my son, I feel like

0:16:27.800 --> 0:16:30.560
<v Speaker 3>I let him down. I guess, you know, it's not

0:16:30.800 --> 0:16:33.720
<v Speaker 3>fair for him to have a mom that is going

0:16:33.800 --> 0:16:35.840
<v Speaker 3>to be sick for the rest of our life. It

0:16:35.920 --> 0:16:38.960
<v Speaker 3>might not be bad today, but we don't know about tomorrow,

0:16:39.120 --> 0:16:41.960
<v Speaker 3>you know. And I just I feel guilt in that

0:16:42.040 --> 0:16:46.240
<v Speaker 3>aspect of him just not having a healthy mom. Same

0:16:46.320 --> 0:16:48.920
<v Speaker 3>for my husband, for him to have a wife that

0:16:49.040 --> 0:16:52.800
<v Speaker 3>just doesn't healthy and it breaks my heart for them really.

0:16:54.360 --> 0:16:56.760
<v Speaker 3>But I try to stay positive and take care of

0:16:56.760 --> 0:16:59.880
<v Speaker 3>myself as much as I can, but it definitely does

0:17:00.120 --> 0:17:04.640
<v Speaker 3>play a huge role on your mental health for sure.

0:17:04.840 --> 0:17:05.400
<v Speaker 2>Day to day.

0:17:05.920 --> 0:17:07.840
<v Speaker 3>Some days I can be like, you know what, I

0:17:07.880 --> 0:17:11.400
<v Speaker 3>am a warrior I got this. Everything's great. In other

0:17:11.480 --> 0:17:15.280
<v Speaker 3>days it's like I am not okay, and I feel

0:17:15.280 --> 0:17:17.520
<v Speaker 3>like I could just crawl under a rock and stay there.

0:17:18.320 --> 0:17:21.480
<v Speaker 2>Rachel, like a lot of people living with IgA nephropathy,

0:17:21.920 --> 0:17:25.080
<v Speaker 2>has become an advocate, encouraging others to get checked.

0:17:25.840 --> 0:17:28.560
<v Speaker 3>All of my friends because of this, I'm like, please

0:17:28.720 --> 0:17:31.720
<v Speaker 3>get your yearlys done, but also ask for that urine test.

0:17:32.359 --> 0:17:34.919
<v Speaker 3>You know, if you see any sign of protein in

0:17:34.960 --> 0:17:37.240
<v Speaker 3>your urine, just double check it. Why not?

0:17:38.560 --> 0:17:43.520
<v Speaker 2>Exactly why not? Kidney health is not top of mind

0:17:43.520 --> 0:17:46.639
<v Speaker 2>for most people, but it's worth talking to your doctor about.

0:17:47.520 --> 0:17:51.680
<v Speaker 2>You can also go to Vertex's website vrtx dot com

0:17:51.720 --> 0:17:55.760
<v Speaker 2>for more information on Vertex's commitment to IgA nephropathy and

0:17:55.840 --> 0:18:02.760
<v Speaker 2>other serious kidney diseases. This is Targeting the Toughest Diseases

0:18:03.160 --> 0:18:07.760
<v Speaker 2>a podcast from Bloomberg Media Studios and Vertex Pharmaceuticals. If

0:18:07.800 --> 0:18:10.439
<v Speaker 2>you like what you hear, subscribe and leave us a review.

0:18:11.200 --> 0:18:13.640
<v Speaker 2>I'm Jordan Gospore. Thanks for listening.