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Behind the Genes

Behind the Genes

By: Genomics England
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We are Genomics England and our vision is to create a world where everyone benefits from genomic healthcare. Introducing our refreshed podcast identity: Behind the Genes, previously known as The G Word. Join us every fortnight, where we cover everything from the latest in cutting-edge research to real-life stories from those affected by rare conditions and cancer. With thoughtful conversations, we take you behind the science. You can also tune in to our Genomics 101 explainer series which breaks down complex terms in under 10 minutes.Copyright 2021 All rights reserved. Biological Sciences Science Social Sciences
Episodes
  • Dr Katie Snape: How can genomics help us understand cancer?

    Dr Katie Snape: How can genomics help us understand cancer?
    Dec 17 2025
    In this explainer episode, we’ve asked Dr Katie Snape, principal clinician at Genomics England, cancer geneticist, and specialist in inherited cancer, to explain how genomics can help us understand cancer. You can also find a series of short videos explaining some of the common terms you might encounter about genomics on our YouTube channel. If you’ve got any questions, or have any other topics you’d like us to explain, let us know on podcast@genomicsengland.co.uk. You can download the transcript or read it below. Flo: How can genomics help us understand cancer? I'm Florence Cornish, and today I'm joined with Katie Snape, who is Principal Clinician here at Genomics England, lead Consultant for Cancer Genetics at the Southwest Thames Centre for Genomics, and Chair of UK Cancer Genetics Group. So Katie, it's probably safe to say that everyone listening will have heard the word cancer before. Lots of people may have even been directly affected by it or know someone who has it or who has had it, and I think the term can feel quite scary sometimes and intimidating to understand. So, it might be good if you could explain what we actually mean when we say the word cancer. Katie: Thanks, Florence. So, our bodies are made up of millions of building blocks called cells. Each of these cells contains an instruction manual, and our bodies read this to build a human and keep our bodies working and growing over our lifetimes. So, this human instruction manual is our genetic information, and it's called the human genome. Throughout our lifetime, our cells will continue to divide and grow to make more cells when we need them. And this means that our genetic information has to contain the right instructions, which tell the cells to divide when we need new cells, like making new skin cells, for example as our old skin cells die, but they also need to stop dividing when we have enough new cells and we don't need anymore. And this process of growing but stopping when we don't need anymore cells, keeps our bodies healthy and functioning as they should do. However, if the instructions for making new cells goes wrong and we don't stop making new cells when we're supposed to, then these cells can grow out of control, and they can start spreading and damaging other parts of our body. And this is basically what cancer is. It's an uncontrolled growth of cells which don't stop when they're supposed to, and they grow and spread and damage other tissues in our body. Florence: So, you mentioned there that cancer can arise when the instructions in our cells go wrong. Could you talk a little bit more about this? How does it lead to cancer? Katie: Yeah. So the instructions that control how our cells should grow and then stop growing are usually called cancer genes. So our body reads these instructions a bit like we might read an instruction manual to perform a task. So if we imagine that one of these important cancer genes that has a spelling mistake, which means the body can't read it properly, then those cells won't follow the right instructions to grow and then stop growing like they should. So if our cells lose the ability to read these important instructions due to this type of spelling mistake, then that's when a cancer can develop. As these spelling mistakes happen in cancer genes, we call them genetic alterations or genetic variants. Florence: And so, when you're in the clinic seeing somebody who has cancer, what kinds of genomic tests can they have to help us find out a little bit more about it? Katie: So the genetic alterations that can cause cancer can happen in different cells. So that's why cancer can affect many different parts of the body. If a genetic alteration happens in a breast cell, then a breast cancer might develop. If the alteration happens in a skin cell, then a skin cancer could develop. We can take a sample from the cancer. This is often known as a biopsy, and then we can use this sample to extract the genetic information to read the instructions in the cancer cells, and when we do this, we are looking for spelling mistakes in the important cancer genes, which might of course, those cells to grow out of control. We can also look for patterns of alterations in the cells, which might tell us the processes that led to those genetic alterations occurring. For example, we can look at patterns of damage in the genetic information caused by cigarette smoke, or sunlight, or problems because the cell has lost its ability to mend and repair its genetic information. And we can also count the number of different alterations in the cancer cell, which might tell us how different that cancer cell is from our normal cells, and that can be important because we might be able to use medications to get our immune system to attack the cancer cells. So where we see genetic alterations in a cancer cell, we call them acquired or somatic alterations because we ...
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    9 mins
  • Amanda Pichini: What is a genetic counsellor?

    Amanda Pichini: What is a genetic counsellor?
    Nov 12 2025
    In this explainer episode, we’ve asked Amanda Pichini, clinical director at Genomics England and genetic counsellor, to explain what a genetic counsellor is. You can also find a series of short videos explaining some of the common terms you might encounter about genomics on our YouTube channel. If you’ve got any questions, or have any other topics you’d like us to explain, let us know on podcast@genomicsengland.co.uk. You can download the transcript or read it below. Florence: What is a genetic counsellor? I'm Florence Cornish, and today I'm joined with Amanda Pichini, a registered genetic counsellor and clinical director for Genomics England, to find out more. So, before we dive in, lots of our listeners have probably already heard the term genetic counsellor before, or some people might have even come across them in their healthcare journeys. But for those who aren't familiar, could you explain what we mean by a genetic counsellor? Amanda: Genetic counsellors are healthcare professionals who have training in clinical genomic medicine and counselling skills. So they help people understand complex information, make informed decisions, and adapt to the impact of genomics on their health and their family. They're expert communicators, patient advocates, and navigators of the ethical issues that genomics and genomic testing could bring. Florence: Could you maybe give me an example of when somebody might see a genetic counsellor? Amanda: Yes, and what's fascinating about genetic counselling is that it's relevant to a huge range of conditions, scenarios, or points in a person's life. Someone's journey might start by going to their GP with a question about their health. Let's say they're concerned about having a strong family history of cancer or heart disease, or perhaps a genetic cause is already known because it's been found in a family member and they want to know if they've inherited that genetic change as well. Or someone might already be being seen in a specialist service, perhaps their child has been diagnosed with a rare condition. A genetic counsellor can help that family explore the wide-ranging impacts of a diagnosis on theirs and their child's life, how it affects their wider family, what it might mean for future children. You might also see a genetic counsellor in private health centres or fertility clinics, or if you're involved in a research study too. Florence: And so, could you explain a bit more about the types of things a genetic counsellor does? What does your day-to-day look like, for example? Amanda: Most genetic counsellors in the UK work in the NHS as part of a team alongside doctors, lab scientists, nurses, midwives, or other healthcare professionals. Their daily tasks include things like analysing a family history, assessing the chance of a person inheriting or passing on a condition, facilitating genetic tests, communicating results, supporting family communication, and managing the psychological, the emotional, the social, and the ethical impacts of genetic risk or results. My day-to-day is different though. I and many other genetic counsellors have taken their skills to other roles that aren't necessarily in a clinic or seeing individual patients. It might involve educating other healthcare professionals or trainees, running their own research, developing policies, working in a lab, or a health tech company, or in the charity sector. For me, as Clinical Director at Genomics England, I bring my clinical expertise and experience working in the NHS to the services and programmes that we run, and that helps to make sure that we design, implement, and evaluate what we do safely, and with the needs of patients, the public, and healthcare professionals at the heart of what we do. My day-to-day involves working with colleagues in tech, design, operations, ethics, communications, and engagement, as well as clinical and scientific experts, to develop and run services like the Generation Study, which is sequencing the genomes of 100,000 newborn babies to see if we can better diagnose and treat children with rare conditions. Florence: So, I would imagine that one of the biggest challenges of being a genetic counsellor is helping patients to kind of make sense of the complicated test results or information, but without overwhelming them. So how do you balance kind of giving people the scientific facts and all the information they need, but while still supporting them emotionally? Amanda: This is really at the core of what genetic counsellors can do best, I think. Getting a diagnosis of a rare condition, or finding out about a risk that has a genetic component, can come with a huge range of emotions, whether that's worry, fear, or hope and relief. It can bring a lot of questions, too. What will this mean for my future or my family's future? What do you know about this condition? What sort of symptoms could I have? What treatments or ...
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    8 mins
  • Dr Emily Perry: What is the Genomics England Research Environment?

    Dr Emily Perry: What is the Genomics England Research Environment?
    Oct 15 2025
    In this explainer episode, we’ve asked Dr Emily Perry, research engagement manager at Genomics England, to explain what the Genomics England Research Environment is. You can also find a series of short videos explaining some of the common terms you might encounter about genomics on our YouTube channel. You can listen to the previous episode mentioned in this podcast, How has a groundbreaking genomic discovery impacted thousands worldwide? If you’ve got any questions, or have any other topics you’d like us to explain, let us know on podcast@genomicsengland.co.uk. You can download the transcript or read it below. Florence: What is the Genomics England Research Environment? My name is Florence Cornish and I'm here with Emily Perry, Research Engagement Manager at Genomics England, to find out more. So Emily, before we dive into the Research Environment, let's set some context. Could you explain what Genomics England is aiming to do as an organisation? Emily: So, Genomics England provides genome sequencing in a healthcare setting for the National Health Service in England. As we sequence genomes for healthcare, the benefit is that we can also put that genomic and clinical data out for research in a controlled manner, and then that can also feed back into healthcare as well. So, it's really, this kind of cyclical process that Genomics England is responsible for. Florence: And so, what do we mean when we say Research Environment? Emily: So, the Research Environment is how our researchers can get access to that clinical and genomic data that we get through healthcare. So, it's a controlled environment, it's completely locked down, so it's kind of like a computer inside a computer. And in there, the researchers can access all of the data that we have and also a lot of tools for working with it in order to do their research. We refer to the data as the National Genomics Research Library, or the NGRL. The NGRL data is provided inside the Research Environment Florence: So you mentioned the National Genomic Research Library. If any listeners want to learn more about this, you can check out our previous Genomics 101 podcast: What is the National Genomic Research Library? And so Emily, could you talk about what kind of data is stored in this library? Emily: So the library is made up of both genomic data and clinical data, which the researchers use alongside each other. The genomic data includes what we call alignments, which is where we match the reads from sequencing onto a reference sequence, and variants, which is where we identify where those alignments differ from the reference sequence, and this is what we are looking for in genomic research. The clinical data includes the data that was taken from our participants at recruitment, so details of the rare disease, the cancer, that they have, but also medical history data. So, we work with the NHS and we're able to get full medical history for our participants as well. This is all fully anonymised, so there's no names, there's no dates of birth, there's no NHS numbers. It's just these identifiers which are used only inside the Research Environment and have no link to the outside world. Florence: And so how is this clinical and genomic data secured? Emily: So, as I said there's no names, there's no NHS numbers, there's no dates of birth. And we have very strict criteria for how people can use the data. So researchers, in order to get access to the Research Environment, they have to be a member of a registered institution, they have to submit a project proposal for what it is that they want to study with the data. There's also restrictions on how they can get the data out, so they do all their research inside, there's no way that they can do things like copy and paste stuff out or move files. The only way that they can get data out of the Research Environment is going through a process called Airlock, which is where they submit the files that they want to export to our committee, who then analyse it, check that it's in accordance with our rules and it protects our participants' safety and that only then would they allow them to export it. Florence: Who has access to the Research Environment? Emily: We have researchers working with the Research Environment all over the world. There's 2 kind of major groups. One of them is academia, so this will be researchers working in universities and academic institutions. The other side of it would is industry - so this will be biotech, startups, pharma companies, things like that. Florence: And finally, can you tell us about some of the discoveries that have been made using this data? Emily: There's lots of really cool things that have come out of the Research Environment. A recent story that came out of the Research Environment was the ReNU syndrome, it was initially just one family that they identified this in, and they were able to extend this discovery across and identify huge numbers of individuals who ...
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    5 mins
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