Lipoprotein(a): Who's Most at Risk

00:33:41
https://www.youtube.com/watch?v=D7_VQQY6aTw

Summary

TLDRThe Family Heart Foundation hosted a webinar titled 'Lipoprotein Little A: Who is Most at Risk,' featuring Dr. Abha Khandelwal from Stanford. The event aimed to raise awareness about lipoprotein(a), a genetic factor significantly contributing to cardiovascular disease, including heart attacks and strokes. Dr. Khandelwal discussed its prevalence, highlighting that 1 in 5 individuals might have elevated levels, especially in African American and South Asian populations. It was emphasized that despite its genetic nature, regular screening is crucial as it remains constant through life, making early detection a valuable tool for prevention and management. Current management strategies focus on reducing overall cardiovascular risk through lifestyle changes, LDL-lowering strategies, and potential use of aspirin, though bleeding risks must be managed. New therapies, such as pelacarsen and small interfering RNAs, are in trial phases, aiming to effectively reduce lipoprotein(a) levels by up to 80-95%. The event was part of Lipoprotein(a) Awareness Month and included thanks to sponsors and engagement from participants through a Q&A session.

Takeaways

  • πŸ«€ Lipoprotein(a) significantly contributes to cardiovascular disease risk.
  • πŸ‘©β€βš•οΈ Screening all adults for lipoprotein(a) is recommended by many health experts.
  • 🌍 Prevalence is higher in African Americans and South Asians.
  • πŸ“‰ New therapies could reduce lipoprotein(a) levels by up to 95%.
  • πŸ”Ž 1 in 5 people has elevated lipoprotein(a) levels.
  • 🧬 Lipoprotein(a) is genetically inherited, not significantly changed by lifestyle.
  • πŸ“Š Discussion included current and upcoming treatment options.
  • ⚠️ Elevated lipoprotein(a) increases risk for heart disease, stroke, and related conditions.
  • πŸ’‘ Awareness and early detection can lead to better management of disease risk.
  • 🩺 Aspirin and LDL-lowering therapies are part of current management strategies.

Timeline

  • 00:00:00 - 00:05:00

    Dr. Mary McGowan from the Family Heart Foundation introduces a webinar on lipoprotein (a) and its risks. Dr. Abha Kandawal from Stanford is the guest speaker, sharing research and new studies about LP(a). The webinar is informational and not medical advice. Attendees are encouraged to introduce themselves and ask questions during the session. Dr. Kandawal will answer these questions at the end of the webinar.

  • 00:05:00 - 00:10:00

    Dr. Kandawal discusses socioeconomic factors in heart disease, showcasing maps that highlight regions with high death rates correlating with poverty, especially affecting African-American and Latino women. She introduces lipoprotein (a), discovered by Dr. Berg in the 1960s, detailing its structure and unclear function. Recent studies suggest LP(a) is significantly more atherogenic than LDL. The segment emphasizes the importance of understanding both biological and socioeconomic contributors to heart disease.

  • 00:10:00 - 00:15:00

    Dr. Kandawal addresses the risks associated with LP(a), which includes coronary artery disease, cerebrovascular disease, aortic stenosis, and peripheral arterial disease. She explains LP(a)'s potential genetic evolution and its prevalent ethnic differences, noting its high prevalence in African-Americans and Southeast Asians. The role of genetics in LP(a) inheritance is also discussed, highlighting a major study that shows a large percentage of adults are unaware of their LP(a) levels and calls for better screening practices.

  • 00:15:00 - 00:20:00

    Focuses on the importance of screening for LP(a) and the guidelines from various health organizations. Dr. Kandawal argues for universal screening, stating it's cost-effective, promotes early intervention, and engages patients. She uses Dr. McGowan's research to highlight the low testing rates. LP(a) is genetically determined and stable throughout life, with icd10 codes available for diagnosis. Values change slightly with age and life events like menopause. There’s a push for more awareness and testing of family members when one has elevated LP(a).

  • 00:20:00 - 00:25:00

    The segment covers current management strategies for elevated LP(a), emphasizing lifestyle changes like diet and exercise, and controlling other cardiovascular risk factors. Pharmacological treatments include aspirin and a wide variety of LDL-lowering drugs, although specific treatments for LP(a) alone are limited. Emerging therapeutic options are being developed that target LP(a) specifically, focusing on their mechanisms, especially anti-sense oligonucleotides, which significantly reduce LP(a) levels.

  • 00:25:00 - 00:33:41

    Dr. Kandawal concludes by discussing new therapies for LP(a) that show promising results, including Phase 3 trials using anti-sense technologies that dramatically lower LP(a) levels. She emphasizes the need for awareness and the potential for new treatments to become available. Participants are encouraged to take action by sharing this knowledge with others and considering being screened for LP(a). The webinar aims to increase awareness and encourage proactive health management among attendees.

Show more

Mind Map

Video Q&A

  • What is the main topic of the webinar?

    The webinar focuses on lipoprotein(a), its risks, screening methods, and new research.

  • Who is the presenter of the webinar?

    Dr. Abha Khandelwal from Stanford is the presenter.

  • What is the relationship between lipoprotein(a) and heart disease?

    Lipoprotein(a) contributes to cardiovascular disease through increased arterial plaque and clot formation.

  • How common is elevated lipoprotein(a)?

    About 1 in 5 people have elevated levels of lipoprotein(a).

  • What are some treatments available for elevated lipoprotein(a)?

    Current treatments include lifestyle changes, aspirin, and potentially some LDL-lowering therapies, but new therapies are in development.

  • Is lipoprotein(a) genetically inherited?

    Yes, it is genetically inherited, and screening of first-degree relatives is suggested.

  • Why is screening for lipoprotein(a) important?

    It's an independent risk factor for cardiovascular diseases that remains constant throughout life, making early detection crucial for management.

  • What are the upcoming treatments for lipoprotein(a)?

    New therapies include pelacarsen and other genetic-based treatments in clinical trials to significantly lower lipoprotein(a) levels.

  • How does lipoprotein(a) affect different populations?

    Higher prevalence is seen in African Americans and South Asians compared to other groups.

  • What impact does menopause have on lipoprotein(a) levels?

    Menopause might increase lipoprotein(a) levels due to a decline in estrogen.

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  • 00:00:00
    okay I think we should get started um
  • 00:00:03
    welcome to everybody my name is Dr Mary
  • 00:00:05
    McGowan I'm the chief medical officer of
  • 00:00:07
    the family heart foundation and I'd like
  • 00:00:09
    to welcome you to our um Family Heart
  • 00:00:11
    Foundation webinar uh titled lipoprotein
  • 00:00:14
    little a who is most at risk and uh Dr
  • 00:00:18
    we're very pleased that Dr obha candle
  • 00:00:20
    wall um from Stanford is joining us to
  • 00:00:23
    give us our presentation tonight um hope
  • 00:00:25
    you all experienced LP littlea awareness
  • 00:00:28
    day um this is really LP littlea
  • 00:00:31
    Awareness Month um so that's the reason
  • 00:00:33
    for this webinar next slide
  • 00:00:36
    please just a little bit of uh
  • 00:00:39
    information um this webinar is really
  • 00:00:41
    for your information uh the content is
  • 00:00:44
    not intended to be a substitute for
  • 00:00:46
    medical advice diagnosis or treatment
  • 00:00:48
    and it does not constitute medical or
  • 00:00:50
    other professional advice um medical
  • 00:00:52
    information is constantly changing as
  • 00:00:54
    you will hear tonight Dr kandal will be
  • 00:00:57
    describing some new studies around LP
  • 00:01:00
    little a so um this information is um
  • 00:01:03
    for your information this webinar is for
  • 00:01:05
    your information and um some of the
  • 00:01:08
    information may change over time we do
  • 00:01:10
    encourage you to follow up with your
  • 00:01:12
    medical team for your specific
  • 00:01:14
    recommendations pertaining to um the
  • 00:01:16
    treatment of LP littlea or other issues
  • 00:01:20
    that you may have next
  • 00:01:22
    slide we'd like people to say hello
  • 00:01:24
    there's a lot of people on um the
  • 00:01:27
    webinar tonight I'm well over a hundred
  • 00:01:29
    so far are um but you can use the chat
  • 00:01:32
    to introduce yourself and make sure that
  • 00:01:34
    you change the settings to everyone so
  • 00:01:36
    everybody can meet you and just let us
  • 00:01:38
    know what you're hoping to um get out of
  • 00:01:41
    tonight's uh webinar next
  • 00:01:45
    slide if you have a question you want to
  • 00:01:48
    use the Q&A um area of the screen it's
  • 00:01:52
    down below it's to the right of of chat
  • 00:01:55
    and if you ask questions um I will be
  • 00:01:59
    taking those questions down during the
  • 00:02:01
    uh during the webinar and I'll be able
  • 00:02:03
    to direct those questions to Dr kandle
  • 00:02:06
    wall at the end of the webinar so please
  • 00:02:08
    make sure that any questions you may
  • 00:02:10
    have you you put in there next
  • 00:02:13
    slide I want to thank our sponsors um
  • 00:02:16
    sponsors for LP littlea awareness day
  • 00:02:18
    and sponsors for LP littlea community in
  • 00:02:21
    action and now I want to take the
  • 00:02:23
    opportunity to introduce our speaker um
  • 00:02:27
    abhar Kwa is an Imaging C ologist who
  • 00:02:31
    has clinical experience in the
  • 00:02:32
    prevention of cardiovascular disease
  • 00:02:35
    particularly in high-risk populations
  • 00:02:37
    she serves in several capacities at
  • 00:02:40
    Stamford um the ambulatory clinic clinic
  • 00:02:43
    chief for cardiovascular medicine and
  • 00:02:45
    the non-invasive Cardiology section her
  • 00:02:48
    research spans clinical trials in
  • 00:02:51
    preventive Cardiology as well as cardio
  • 00:02:54
    obstetrics Imaging and women's heart
  • 00:02:56
    health she's been involved in phase two
  • 00:02:59
    and phase three clinical trials for
  • 00:03:02
    elevated lipoprotein little a and we're
  • 00:03:04
    very pleased that she serves as a
  • 00:03:07
    scientific on the scientific Advisory
  • 00:03:09
    board for the family Heart Foundation
  • 00:03:11
    welcome abha and we're looking forward
  • 00:03:13
    to your conversation with us today thank
  • 00:03:15
    you Dr McGowan I appreciate the warm
  • 00:03:18
    welcome and very kind introduction um I
  • 00:03:21
    very excited to be here and talk about
  • 00:03:24
    uh lipoprotein little a it has impacted
  • 00:03:27
    me very personally in my family and I'm
  • 00:03:29
    sure several of those who are listening
  • 00:03:31
    today um I'm going to just share my
  • 00:03:37
    screen can we see my screen
  • 00:03:43
    okay yes great so um I just again want
  • 00:03:48
    to thank you all for taking time out of
  • 00:03:50
    your uh day and evening to talk about
  • 00:03:53
    lipoprotein a which is a molecule that
  • 00:03:56
    I've been studying for the better part
  • 00:03:58
    of the last two decades and um like I
  • 00:04:00
    said has impacted several of those
  • 00:04:01
    around me I may use the word lipoprotein
  • 00:04:04
    a LPA LP little a
  • 00:04:08
    interchangeably but um I am talking
  • 00:04:10
    about the same
  • 00:04:12
    molecule and so briefly what I'd like to
  • 00:04:15
    do is talk about the background of
  • 00:04:17
    lipoprotein a and its relationship to
  • 00:04:19
    LDL uh I will talk about the risks
  • 00:04:22
    associated with LP littlea and screening
  • 00:04:24
    and diagnosis who we think is most at
  • 00:04:27
    risk and I will talk about the overview
  • 00:04:30
    of how we manage individuals with this
  • 00:04:32
    condition and I'm very excited to share
  • 00:04:35
    some uh future research that is um on
  • 00:04:39
    the
  • 00:04:41
    horizon so why we're here today we all
  • 00:04:46
    know that heart disease is the number
  • 00:04:47
    one killer of both men and women in this
  • 00:04:49
    country and we're going to talk about
  • 00:04:51
    the biological contributors to this
  • 00:04:54
    today but we cannot ignore that there
  • 00:04:56
    are significant socioeconomic
  • 00:04:58
    contributors and Geographic contributors
  • 00:05:00
    as well when we look at heart disease
  • 00:05:02
    death rates across the US with areas
  • 00:05:05
    that are disproportionately affected in
  • 00:05:07
    darker red across the top we can see
  • 00:05:10
    that there are areas uh where your ZIP
  • 00:05:13
    code matters and unfortunately when we
  • 00:05:16
    overlay poverty areas by county of below
  • 00:05:20
    one can see that they are they map
  • 00:05:22
    pretty closely together we know that
  • 00:05:25
    about one in eight individuals during
  • 00:05:27
    this study period were living in poverty
  • 00:05:30
    and this was higher for African-American
  • 00:05:32
    and Latino women we also know that
  • 00:05:34
    families headed by single mothers were
  • 00:05:37
    almost six times more likely to live in
  • 00:05:39
    poverty so though we are going to spend
  • 00:05:41
    the rest of the time talking about the
  • 00:05:43
    biology I want us to remember that there
  • 00:05:46
    are other significant factors that do
  • 00:05:48
    contribute to heart disease death
  • 00:05:52
    rates so moving on what is lipoprotein
  • 00:05:55
    little a well it's a molecule that was
  • 00:05:57
    first uh identified
  • 00:06:00
    by uh Dr krie Berg a geneticist in the
  • 00:06:03
    1960s and when we look at lipoprotein a
  • 00:06:07
    we can kind of classify these different
  • 00:06:09
    particles based on their density their
  • 00:06:11
    size and their components and so we kind
  • 00:06:14
    of look at it on the spectrum of apob
  • 00:06:17
    particles which you can see here it
  • 00:06:18
    shares some structure with LDL here um
  • 00:06:22
    there is a difference which I'll show
  • 00:06:23
    you in the next slide where lpla also
  • 00:06:27
    has an apoa component that's tethered to
  • 00:06:30
    the APO by a disulfide bond but so again
  • 00:06:33
    when we're looking at different
  • 00:06:34
    particles in lipoproteins we can look at
  • 00:06:36
    the apoa and the apob it's considered
  • 00:06:39
    part of this um apob spectrum of
  • 00:06:43
    atherogenesis uh and as we know that it
  • 00:06:46
    does we we suspect that some of it
  • 00:06:48
    evolved from hedgehogs and bamboom and
  • 00:06:51
    we don't truly know its function though
  • 00:06:53
    there are some speculations uh and
  • 00:06:55
    theories as to previously it may have
  • 00:06:58
    played a role in um
  • 00:07:00
    clotting and bleeding issues but again
  • 00:07:03
    we don't know its receptor fully and at
  • 00:07:05
    this time don't fully understand its
  • 00:07:07
    function in in
  • 00:07:10
    humans so looking at this structure more
  • 00:07:13
    closely uh here we see uh the LDL like
  • 00:07:18
    core with APO B attached to the APO a
  • 00:07:22
    which you see around the sides you can
  • 00:07:24
    see these little Pringles named after
  • 00:07:27
    their similarity to Danish pastries
  • 00:07:30
    and uh what we can note is that again
  • 00:07:33
    I'm not going to go into too much detail
  • 00:07:34
    but the number of these cringle repeats
  • 00:07:38
    can often times determine what your
  • 00:07:40
    plasma levels are for the lp little a
  • 00:07:44
    also in addition to this apoa component
  • 00:07:47
    we also have this oxidized phospho liid
  • 00:07:50
    uh component to the structure which
  • 00:07:52
    really makes this a pretty um malignant
  • 00:07:55
    molecule When comparing it to just LDL
  • 00:07:57
    alone and most importantly I want I want
  • 00:08:00
    you to be aware that one in five people
  • 00:08:02
    have an elevated LP little
  • 00:08:05
    a and as I was talking about before
  • 00:08:08
    there was a very recent study just
  • 00:08:09
    earlier this year published by Dr bornon
  • 00:08:12
    and all that looked at a large
  • 00:08:14
    population in the UK biobank and looked
  • 00:08:17
    at individuals with LPA versus LDL and
  • 00:08:20
    looked at incident risk of heart disease
  • 00:08:23
    and what they found was that that per
  • 00:08:26
    particle the LPA was about six times
  • 00:08:30
    more
  • 00:08:31
    atherogenic than LDL now I just want to
  • 00:08:35
    remind us all that LDL in general for
  • 00:08:38
    most of us are much more abundant in our
  • 00:08:41
    our bloodstream so they still carry the
  • 00:08:43
    greatest proportion of overall
  • 00:08:44
    cardiovascular
  • 00:08:45
    risk however again per particle it is
  • 00:08:50
    considered six times more
  • 00:08:52
    aogen and so going back to the structure
  • 00:08:56
    uh you know why is this so does it just
  • 00:08:58
    cause Arro or there other mechanisms of
  • 00:09:00
    its uh action that can influence its
  • 00:09:04
    manifestations so first when we talked
  • 00:09:06
    about it we talked about the atherogenic
  • 00:09:08
    core with the LDL particle at at the
  • 00:09:11
    center of the of the figure but we also
  • 00:09:14
    note that there is a role in increased
  • 00:09:17
    bromus formation or clot formation so we
  • 00:09:21
    know that individuals who have elevated
  • 00:09:23
    LPA we can get plaque built up in the
  • 00:09:26
    arteries but we can also have an
  • 00:09:27
    increased risk of clot formation
  • 00:09:30
    and then there are some theories as well
  • 00:09:32
    to the oxidized phospholipid causing an
  • 00:09:34
    inflammatory property that can also
  • 00:09:36
    cause other manifestations of the
  • 00:09:39
    disease so we focus a lot about heart
  • 00:09:41
    disease and coronary artery disease this
  • 00:09:44
    is from an editorial I wrote a couple
  • 00:09:46
    years ago and we look at all of the
  • 00:09:49
    manifestations of LP little a so we know
  • 00:09:53
    that it can manifest as cerebrovascular
  • 00:09:55
    disease in the in the way of esic stroke
  • 00:09:58
    we already know about the AR coronary
  • 00:10:00
    artery disease but there have been some
  • 00:10:03
    um evidence that it may be associated
  • 00:10:05
    with atrial fibrillation as well as
  • 00:10:08
    aortic calcific aortic stenosis and then
  • 00:10:11
    we also know its role in um Peripheral
  • 00:10:14
    arterial disease which you know is a
  • 00:10:16
    plaque build up in the other arterial
  • 00:10:21
    beds so we believe that LP Gene kind of
  • 00:10:24
    started in the African subcontinent
  • 00:10:26
    which may partially be responsible for
  • 00:10:28
    the two to threefold increase in um
  • 00:10:32
    African-Americans for this condition uh
  • 00:10:35
    it then subsequently migrated Out of
  • 00:10:37
    Africa to other areas and what we do
  • 00:10:40
    know is that uh the prevalence of
  • 00:10:42
    elevated LPA uh greater than 50
  • 00:10:44
    milligrams per deciliter or greater than
  • 00:10:47
    125 nanomols can affect one in five
  • 00:10:50
    individuals and almost 1.4 billion
  • 00:10:53
    people worldwide there has been some
  • 00:10:56
    data to suggest that the prevalence is
  • 00:10:59
    high high in African-Americans and South
  • 00:11:02
    Southeast
  • 00:11:04
    Asians um this is one such example we
  • 00:11:07
    were part of a large OB observational
  • 00:11:09
    study at Stanford um called Heritage and
  • 00:11:12
    it enrolled over 48,000 individuals uh
  • 00:11:15
    across over 40 countries and they looked
  • 00:11:19
    at uh this is this is work from Dr
  • 00:11:21
    Shapiro's Group which was looking at a
  • 00:11:23
    subgroup of this and the breakdown of
  • 00:11:27
    prevalence of LPA and LDL across various
  • 00:11:31
    ethnicities what he noted was compared
  • 00:11:33
    to the overall group black participants
  • 00:11:36
    and in particular female participants
  • 00:11:37
    had higher median LPA values so one and
  • 00:11:41
    two black participants had an elevated
  • 00:11:43
    LPA uh exceeding 125 nimals and what he
  • 00:11:48
    also noted was that Hispanic
  • 00:11:50
    participants had a slightly lower median
  • 00:11:51
    LPA value compared to the overall
  • 00:11:56
    group so how is LP little a
  • 00:12:00
    inherited so what we do know is it is a
  • 00:12:03
    little complicated however if you have
  • 00:12:06
    an elevated LP littlea each of your
  • 00:12:08
    first-degree relatives is at increased
  • 00:12:11
    risk of inheriting LP littlea so they
  • 00:12:14
    should be considered for
  • 00:12:18
    screening how well are we doing as
  • 00:12:21
    health care providers and diagnosing
  • 00:12:23
    LPA um I will highlight work by Dr
  • 00:12:27
    mcowan here where she looked at at her
  • 00:12:30
    and her colleagues looked at over 44
  • 00:12:32
    million adults through the medical
  • 00:12:34
    claims database and unfortunately what
  • 00:12:38
    they found was only about 1% of adults
  • 00:12:41
    know their LPA values and of note uh
  • 00:12:46
    those with ascvd it's it's not much
  • 00:12:48
    better so I think there's definitely
  • 00:12:51
    work to be done and in addition when
  • 00:12:53
    looking over time we saw a great
  • 00:12:56
    increase in
  • 00:12:57
    2019 um of individuals getting screened
  • 00:13:02
    however we see this lull in 2020 and
  • 00:13:05
    2021 and you know we speculate that
  • 00:13:09
    potentially co could be partially
  • 00:13:11
    responsible for this uh small decline
  • 00:13:16
    here and another thing to note is that
  • 00:13:20
    anyone can be affected it doesn't matter
  • 00:13:22
    how fit you are in fact I don't know if
  • 00:13:25
    many of you watch the biggest loser but
  • 00:13:27
    Bob Harper is a celebrity fitness
  • 00:13:29
    trainer from that show and he suffered a
  • 00:13:31
    heart attack and it was eventually um
  • 00:13:35
    noted that it was partly responsible by
  • 00:13:38
    because he had um lipoprotein little
  • 00:13:42
    a so it again it doesn't differentiate
  • 00:13:46
    whether you're fit or not um so when we
  • 00:13:49
    look to our medical societies on who we
  • 00:13:52
    should screen who you know how we should
  • 00:13:55
    test for this uh there are different uh
  • 00:13:58
    guidelines and different
  • 00:13:59
    societies uh my personal view is that
  • 00:14:02
    it's a very lowrisk test and oftentimes
  • 00:14:07
    low cost and I think all adults should
  • 00:14:10
    be screened but when we look at the
  • 00:14:12
    European Society of um the European
  • 00:14:15
    Society guidelines they also think that
  • 00:14:17
    all adults should be screened um same
  • 00:14:20
    with the Canadian guidelines our us
  • 00:14:22
    guidelines from the American College of
  • 00:14:24
    Cardiology and aha at least in the last
  • 00:14:27
    um iteration of their guidelines did not
  • 00:14:30
    give specific um screening
  • 00:14:34
    recommendations but my hope is that in
  • 00:14:37
    future guidelines and I I think that my
  • 00:14:40
    colleagues share this view that
  • 00:14:41
    hopefully in future guidelines they will
  • 00:14:43
    address this a little bit more clearly
  • 00:14:45
    and hopefully um support some of these
  • 00:14:48
    other guidelin
  • 00:14:51
    statements um and just to note
  • 00:14:53
    individuals who have very very high LPA
  • 00:14:56
    may actually have an increased risk of
  • 00:14:59
    uh cardiovascular disease similar to
  • 00:15:02
    those with familial hyper lipidemia or
  • 00:15:05
    FH which is another condition that you
  • 00:15:08
    all may be familiar
  • 00:15:15
    with so you know one of the arguments I
  • 00:15:18
    get from some of my patients is well why
  • 00:15:22
    why do you think it's appropriate to
  • 00:15:23
    measure LP delay in everyone and to me
  • 00:15:27
    it's an it's a risk factor it's an
  • 00:15:29
    independent risk factor associated with
  • 00:15:32
    an increased risk of heart disease
  • 00:15:33
    stroke and aeroic stenosis so I think
  • 00:15:36
    it's important to know um I think it's
  • 00:15:38
    very common so I think that's an it's
  • 00:15:42
    very easy to pick someone up uh it's
  • 00:15:45
    something that you don't have to do over
  • 00:15:46
    and over again it's a genetically
  • 00:15:48
    determined predominantly so it remains
  • 00:15:52
    relatively constant um throughout one's
  • 00:15:55
    Lifetime and I do think that it is
  • 00:15:58
    compliment entry with regards to other
  • 00:16:01
    lipid testing so it can kind of
  • 00:16:03
    additionally R stratify individuals
  • 00:16:05
    beyond their traditional lipid panel um
  • 00:16:08
    to me I see a lot of high-risk uh
  • 00:16:11
    younger women I think the potential for
  • 00:16:14
    early intervention is huge if you can
  • 00:16:16
    identify these individuals early you can
  • 00:16:18
    work on their other risk factors and
  • 00:16:20
    potentially prevent future disease I
  • 00:16:23
    think at least initially we should try
  • 00:16:27
    for Cascade screening so if we do
  • 00:16:29
    identify someone with elevated LP
  • 00:16:32
    getting all their first-degree relatives
  • 00:16:33
    screened would be important and I think
  • 00:16:36
    in the next couple years we may see
  • 00:16:38
    increasing therapeutic options available
  • 00:16:41
    so in order to effectively utilize these
  • 00:16:44
    options we need to identify those who
  • 00:16:46
    will be most benefited um I think that
  • 00:16:50
    Universal
  • 00:16:51
    screening it it kind of is more
  • 00:16:53
    appropriate when you look at it through
  • 00:16:55
    an equity lens so you can detect disease
  • 00:16:58
    regardless of a person's zip code so I
  • 00:17:00
    think that's also an important thing to
  • 00:17:02
    think about and I think by screening
  • 00:17:04
    you're engaging our patients and
  • 00:17:06
    increasing their awareness and making
  • 00:17:09
    them really Partners in their health
  • 00:17:10
    care so I think that's very important
  • 00:17:12
    and if we look at all the other
  • 00:17:13
    screening measures that we do I do think
  • 00:17:15
    it's a very cost-effective long run
  • 00:17:20
    intervention and just again to highlight
  • 00:17:22
    Dr McGowan's work unfortunately less
  • 00:17:24
    than 1% of the population has actually
  • 00:17:26
    been tested at any when in their life
  • 00:17:29
    and so we as Healthcare Providers have a
  • 00:17:31
    lot of work to do
  • 00:17:34
    here when looking at LPA values one may
  • 00:17:38
    ask what is a normal lipoprotein a and
  • 00:17:40
    what's elevated we consider it elevated
  • 00:17:43
    when it's greater than 50 mg per
  • 00:17:46
    deciliter or greater than 125 nanomoles
  • 00:17:50
    per
  • 00:17:53
    liter how may your healthcare provider
  • 00:17:56
    document that you have an elevated LP
  • 00:17:58
    little a
  • 00:18:00
    well luckily in
  • 00:18:02
    2018 we had icd10 codes that were
  • 00:18:05
    approved and maybe added to your medical
  • 00:18:07
    record for elevated lipoprotein a or
  • 00:18:10
    family history of elevated lipoprotein
  • 00:18:15
    a and I alluded to this before but is
  • 00:18:18
    this a test that we need to do every
  • 00:18:20
    year every six months no I I don't think
  • 00:18:23
    so um I think it is fairly stable over
  • 00:18:28
    an IND indidual life in over an
  • 00:18:30
    individual's Lifetime with some minor
  • 00:18:33
    exceptions so we generally reach our
  • 00:18:35
    adult level of LPA by around the age of
  • 00:18:39
    five uh there are some exceptions for
  • 00:18:42
    later in life where the values may
  • 00:18:44
    change so menopause may change the
  • 00:18:48
    values for LPA and sometimes
  • 00:18:50
    substantially we know that estrogen can
  • 00:18:53
    lower LPA and in menopause estrogen does
  • 00:18:57
    decline significantly so we may see as
  • 00:18:59
    much as a 20% increase in LPA around
  • 00:19:03
    that time we're also aware of LPA as an
  • 00:19:06
    acute phase reactant this means that it
  • 00:19:08
    can actually increase when there is a
  • 00:19:11
    major uh physical stress or illness
  • 00:19:15
    infection an acute heart attack or major
  • 00:19:18
    surgery um but what we do know also from
  • 00:19:22
    one of the uh novaris uh pelic Carson
  • 00:19:25
    studies one of the newer treatment
  • 00:19:26
    option studies that that there are some
  • 00:19:30
    natural biological variations and in
  • 00:19:32
    some individuals it may be as much as
  • 00:19:34
    about
  • 00:19:38
    20% how do we manage these individuals
  • 00:19:41
    with elevated
  • 00:19:43
    LPA well you know when we look at the
  • 00:19:45
    Epic Norfolk study of about 14,000
  • 00:19:49
    individuals what we found is that
  • 00:19:52
    individuals with high LPA but few
  • 00:19:55
    cardiovascular risk factors were 66%
  • 00:19:58
    lower risk for cardiovascular disease
  • 00:20:01
    than those with multiple cardiovascular
  • 00:20:04
    risk factors so um what we tend to do is
  • 00:20:09
    we and I'll go over this a little bit
  • 00:20:11
    more in another slide is we really focus
  • 00:20:13
    on looking at the cardiovascular risk
  • 00:20:15
    factors that are under our control in
  • 00:20:17
    these individuals for our current state
  • 00:20:20
    management and so when we look at
  • 00:20:22
    treatments I I saw some texts in the
  • 00:20:25
    chat earlier asking what are the
  • 00:20:26
    treatments for this um you know I'm
  • 00:20:29
    going to start off with an old but good
  • 00:20:32
    medicine known as aspirin a baby aspirin
  • 00:20:35
    and this again is hot off the press Dr
  • 00:20:37
    sas's group just earlier this year um
  • 00:20:40
    looked at the Mesa data set which is a
  • 00:20:44
    large group of individuals um that
  • 00:20:47
    previously did not have heart disease
  • 00:20:50
    and looks at aspirin users and
  • 00:20:52
    non-aspirin users and what he found in
  • 00:20:56
    this graphic you can see so in the two
  • 00:20:58
    shades of red are those individuals with
  • 00:21:01
    elevated lipoprotein over time and what
  • 00:21:04
    we see is in the darker red those
  • 00:21:06
    without aspirin use have future
  • 00:21:10
    cardiovascular event rates but the ones
  • 00:21:13
    in the bright red are a little bit
  • 00:21:15
    closer to those uh that have lower lpal
  • 00:21:19
    aays whether they used aspirin or not so
  • 00:21:22
    overall he noted a 46% reduction in
  • 00:21:25
    cardiac events in those individuals with
  • 00:21:28
    elevated lipoprotein a who took a lowd
  • 00:21:31
    do aspirin compared to those who did not
  • 00:21:34
    now as a healthare practitioner and as a
  • 00:21:37
    physician all of these things have to be
  • 00:21:39
    individualized and discussed on a per
  • 00:21:42
    patient um basis because we also have to
  • 00:21:45
    look at the risk of
  • 00:21:47
    bleeding so as I said before there are
  • 00:21:51
    other things that we can look at as well
  • 00:21:53
    including your other
  • 00:21:55
    cardiovascular risk factors so though
  • 00:21:58
    diet and exercise may not immensely
  • 00:22:02
    impact the value of your lipoprotein a
  • 00:22:05
    they are actually very important in
  • 00:22:07
    managing patients with this condition we
  • 00:22:10
    recommend a very aggressive diet um and
  • 00:22:13
    lifestyle plan for our individuals with
  • 00:22:15
    elevated lipoprotein a we will ask them
  • 00:22:18
    to reduce their saturated fat we'll ask
  • 00:22:21
    them to take a high soluble fiber diet
  • 00:22:24
    and when they're unclear if there are
  • 00:22:26
    ethnic specific dietary concern concerns
  • 00:22:28
    we will'll refer them to a dietitian uh
  • 00:22:31
    who can work with them on a proper meal
  • 00:22:33
    plan and we do recommend regular uh
  • 00:22:36
    symptom limited exercise and then we
  • 00:22:40
    work individually on the the patient or
  • 00:22:42
    on the individual based on what their
  • 00:22:44
    other cardiovascular risk factors are so
  • 00:22:46
    if they have high blood pressure if they
  • 00:22:48
    have diabetes metabolic syndrome if
  • 00:22:50
    they're overweight or obese if they're
  • 00:22:53
    smoking or not active and we will
  • 00:22:55
    aggressively
  • 00:22:56
    intervene upon each of these uh risk
  • 00:22:59
    factors based on what the individual
  • 00:23:02
    needs and you know one of the
  • 00:23:03
    cornerstones to treating uh patients
  • 00:23:06
    with this condition is also treating
  • 00:23:08
    their LDL and we have now a huge
  • 00:23:12
    armamentarium of treatment options for
  • 00:23:14
    individuals to get their LDL to to lower
  • 00:23:18
    targets we know that diet can lower LDL
  • 00:23:21
    by 10 to 15% we have statins we have
  • 00:23:24
    medicines like bile acid sequestrant we
  • 00:23:26
    have some newer agents called pcsk9
  • 00:23:30
    Inhibitors that really can reduce the
  • 00:23:33
    LDL by a very significant value and then
  • 00:23:36
    we also have agents like bidic acid and
  • 00:23:40
    zidia um that can also reduce LDL
  • 00:23:43
    anywhere from 15 to 30 to
  • 00:23:45
    40% so we have a lot of good options in
  • 00:23:49
    uh treating
  • 00:23:51
    LDL and in fact some of these LDL
  • 00:23:55
    therapies can influence LPA as well so
  • 00:23:59
    you know as of now diet there's no
  • 00:24:02
    significant impact on LPA there may have
  • 00:24:05
    been prior data looking at saturated fat
  • 00:24:08
    May lower it slightly but this is not
  • 00:24:10
    recommended uh nasin can lower LPA by
  • 00:24:14
    20% but I'll talk about that more in
  • 00:24:16
    another slide statens can raise LPA by
  • 00:24:20
    up to 10 to 15% but again um when
  • 00:24:24
    looking at the individual our goal is to
  • 00:24:27
    lower their overall risk and LDL is
  • 00:24:30
    still a critical component of that and
  • 00:24:33
    so it becomes you know a discussion and
  • 00:24:35
    we do not withhold stattin for this
  • 00:24:38
    small rise in LPA uh and then we don't
  • 00:24:41
    we're not aware of any significant
  • 00:24:43
    effect with bmid doic acid or zidia on
  • 00:24:45
    LPA we know that pcsk9 Inhibitors can
  • 00:24:48
    reduce it anywhere from 15 to
  • 00:24:50
    30% and estrogen lumpi can also lower it
  • 00:24:54
    slightly the only FDA approved treatment
  • 00:24:57
    for LPA reduction is lipoprotein
  • 00:24:59
    apheresis and I will go more into um
  • 00:25:03
    that in a future slide but it can reduce
  • 00:25:04
    your LPA values by almost up to
  • 00:25:09
    35% and it's um FDA approved in
  • 00:25:13
    individuals who um meet very specific
  • 00:25:18
    criteria so when we talk about estrogen
  • 00:25:21
    um we had a similar kind
  • 00:25:24
    of discussion about this when we were
  • 00:25:27
    looking at LDL treatment
  • 00:25:28
    but what we do know is that estrogen
  • 00:25:31
    lowers LPA but data from the women's
  • 00:25:34
    health initiative and um some other
  • 00:25:36
    studies found that hormone replacement
  • 00:25:38
    therapy itself has increased Adverse
  • 00:25:40
    Events like breast cancer blood clots
  • 00:25:43
    and stroke so it is not routinely me um
  • 00:25:46
    estrogen is not routinely recommended to
  • 00:25:47
    lower LP L and again the Val the
  • 00:25:50
    reduction is pretty um marginal
  • 00:25:54
    comparative to some of the newer options
  • 00:25:56
    I'm going to tell you about in in a
  • 00:25:57
    brief moment
  • 00:25:58
    nasin can also lower LP littlea but
  • 00:26:02
    again there was not a benefit found in
  • 00:26:04
    patients who were already on a Statin in
  • 00:26:06
    other studies uh also just I will speak
  • 00:26:09
    from my perspective and I think each
  • 00:26:11
    physician has their own view on this is
  • 00:26:14
    that nce and comes with a lot of side
  • 00:26:16
    effects and so I don't routinely use it
  • 00:26:19
    um because it can increase blood glucose
  • 00:26:22
    there's GI bleeding and risk of gout so
  • 00:26:24
    it really has to be an individualized
  • 00:26:26
    risk benefit discussion with your doctor
  • 00:26:31
    um I spoke to you about pcsk9 Inhibitors
  • 00:26:34
    and we know that they can lower LPA by
  • 00:26:36
    anywhere from 15 to 30% and two of our
  • 00:26:38
    major outcome studies for these agents
  • 00:26:42
    called fora and odyssey outcomes both uh
  • 00:26:46
    demonstrated that LPA reduction may have
  • 00:26:49
    contributed to the ability of these
  • 00:26:51
    agents to reduce cardiovascular events
  • 00:26:54
    um but as of right now pcsk9 Inhibitors
  • 00:26:57
    are not FDA approved for LPA
  • 00:27:01
    reduction and then as I mentioned before
  • 00:27:04
    lipoprotein apheresis it not only lowers
  • 00:27:06
    LPA but it actually lowers LDL as well
  • 00:27:09
    it is a commitment and it takes time and
  • 00:27:12
    is costly but it can be um an option for
  • 00:27:16
    individuals with established
  • 00:27:17
    cardiovascular disease and persistently
  • 00:27:19
    elevated values
  • 00:27:21
    um and and for the treatment of LPA as I
  • 00:27:26
    said so this is the part that I'm very
  • 00:27:28
    excited to share with you there are a
  • 00:27:30
    lot of new therapies and development for
  • 00:27:32
    lpla and um I'm going to just briefly
  • 00:27:36
    talk about the general mechanism of
  • 00:27:38
    action of these new class of Agents they
  • 00:27:42
    all have their subtle differences but uh
  • 00:27:44
    this product is the one that I was most
  • 00:27:46
    familiar with as we were part of like
  • 00:27:48
    the phase two studies for This was um
  • 00:27:50
    the you know they all work on your
  • 00:27:54
    genetic
  • 00:27:55
    transcription and so like you have your
  • 00:27:57
    DNA that's kind of your blueprint and
  • 00:28:00
    then it translates to mRNA which then
  • 00:28:02
    kind of manifests and builds the the
  • 00:28:05
    offending protein so what you can see
  • 00:28:07
    here is a lot of these agents that are
  • 00:28:09
    being developed are called anti-sense
  • 00:28:12
    Alon nucleotides and they work right
  • 00:28:15
    here from the MRNA to the protein
  • 00:28:17
    transcription so they're very very
  • 00:28:18
    specific they're very very targeted and
  • 00:28:21
    they're very effective so all these
  • 00:28:23
    other agents I was telling you are
  • 00:28:24
    reducing LPA by 15 20 maybe
  • 00:28:28
    30% uh in in our studies with ionis we
  • 00:28:32
    saw the reduction in LPA almost 80% so
  • 00:28:36
    very
  • 00:28:37
    impactful in terms of its ability to
  • 00:28:39
    reduce lipoprotein
  • 00:28:42
    a so again as I was alluding to this is
  • 00:28:45
    probably the most mature agent that's
  • 00:28:47
    being studied uh it's from novaris pel
  • 00:28:50
    Carson is the name it's an anti- sensil
  • 00:28:53
    nucleotide and can lower LPA by
  • 00:28:56
    80% and we've already closed enrollment
  • 00:28:59
    for the Horizon trial which is a phase
  • 00:29:02
    three outcomes trial uh it's a secondary
  • 00:29:05
    prevention study looking at subcutaneous
  • 00:29:07
    injections um versus placebo per month
  • 00:29:11
    and it will continue for about four
  • 00:29:12
    years or until we have about 993 events
  • 00:29:16
    and likely be completed in the next year
  • 00:29:18
    or
  • 00:29:21
    two after this we have amen's particle
  • 00:29:24
    it's also a small interfering RNA called
  • 00:29:26
    Al pasaran they are near trial um
  • 00:29:31
    completion for enrollment I believe and
  • 00:29:34
    you know they have about 7,000
  • 00:29:36
    individuals enrolled again this is a
  • 00:29:38
    secondary prevention study looking at
  • 00:29:41
    individuals with LPA with uh value
  • 00:29:45
    greater than 200 nanomoles per deciliter
  • 00:29:48
    and uh they have to have had evidence of
  • 00:29:50
    atherosclerotic cardiovascular disease
  • 00:29:53
    and it's a subcutaneous injection every
  • 00:29:55
    3 months and their preliminary Phase 2
  • 00:29:58
    data says it may lower LPA by up to
  • 00:30:02
    95% um another product that is um
  • 00:30:06
    starting enrollment is leodan by Lily
  • 00:30:09
    again another small interfering RNA um a
  • 00:30:12
    claim is a randomized double blind
  • 00:30:16
    controlled Placebo control trial to look
  • 00:30:18
    at this agent um in individuals with
  • 00:30:21
    established
  • 00:30:23
    ascvd and those at high risk so this is
  • 00:30:27
    one of the few studies as looking both
  • 00:30:28
    at secondary and primary prevention in
  • 00:30:32
    um high-risk individuals and it's going
  • 00:30:35
    to attempt to enroll about
  • 00:30:38
    12,500
  • 00:30:39
    individuals uh with an significantly
  • 00:30:42
    elevated LPA
  • 00:30:44
    value I'm going to continue briefly on
  • 00:30:47
    some of these other agents there's
  • 00:30:48
    another small interfering RNA from
  • 00:30:50
    Silence Therapeutics called zel zerin
  • 00:30:53
    again it's in a phase two um looking at
  • 00:30:56
    LPA greater than 120 and and I believe
  • 00:30:58
    this is also a secondary prevention um
  • 00:31:02
    trial and mapin uh actually had some of
  • 00:31:05
    its Origins at Stanford uh is another
  • 00:31:08
    product by Lily that's being studied
  • 00:31:09
    looking at apoa and B um bonding and
  • 00:31:14
    looking at the heasy level um but hasn't
  • 00:31:17
    yet entered U phase two
  • 00:31:20
    trials and then there is actually
  • 00:31:22
    another uh therapy for LDL reduction um
  • 00:31:25
    which is kind of a CP inhibitor so so
  • 00:31:28
    when we have these cholesterol particles
  • 00:31:31
    floating around in our bloodstream they
  • 00:31:32
    often um components of it are
  • 00:31:34
    transferred to different particles
  • 00:31:36
    making them you know LDL HDL um vldl
  • 00:31:40
    these various cholesterols so OB
  • 00:31:43
    citb is one of those that inhibits kind
  • 00:31:46
    of this transferring of some of
  • 00:31:48
    the the particles and it's current
  • 00:31:52
    dosing strategy is about 10 milligrams
  • 00:31:53
    per day and it can reduce LDL by almost
  • 00:31:56
    50% but also lowers LPA by about um 56%
  • 00:32:02
    and so they are conducting a 9,000
  • 00:32:04
    patient cardiovascular outcomes trial
  • 00:32:07
    with individuals with underlying
  • 00:32:09
    vascular disease that started a couple
  • 00:32:10
    years ago and it's hoping to complete in
  • 00:32:12
    the next couple years done by New
  • 00:32:14
    Amsterdam
  • 00:32:17
    Pharma so with that I hope I've been
  • 00:32:20
    able to give you um a brief overview
  • 00:32:23
    about LP a and its relationship to LDL
  • 00:32:27
    I've spoken brief about the risks
  • 00:32:28
    associated with LPA and its various
  • 00:32:31
    manifestations and not just
  • 00:32:33
    cardiovascular heart disease um we've
  • 00:32:36
    talked about who should be screened my
  • 00:32:38
    opinion everyone but um potentially
  • 00:32:41
    those at high risk and uh we've talked
  • 00:32:44
    about once patients are diagnosed how we
  • 00:32:47
    can manage them and I've also briefly
  • 00:32:50
    spoken about areas for future research
  • 00:32:52
    and opportunities um for participation
  • 00:32:55
    in clinical trials so
  • 00:32:59
    um with that I just again want to remind
  • 00:33:03
    everyone why I'm here which is to help
  • 00:33:06
    raise awareness um I hope you'll help me
  • 00:33:09
    do that by kind of making a mental note
  • 00:33:12
    of an action item that you hope to to do
  • 00:33:14
    after this webinar today I know that um
  • 00:33:18
    you've take given me your time this
  • 00:33:20
    evening which is a good first step but I
  • 00:33:22
    hope that you'll continue this
  • 00:33:23
    conversation with your loved ones and if
  • 00:33:26
    um they not aware of this condition
  • 00:33:29
    informing them about it and ideally
  • 00:33:31
    having them um discuss whether they're
  • 00:33:34
    they should be screened with their care
  • 00:33:36
    provider so I wanted to leave plenty of
  • 00:33:39
    time for questions
Tags
  • Lipoprotein(a)
  • cardiovascular risk
  • screening
  • treatment
  • genetics
  • awareness month
  • clinical trials
  • heart disease
  • population risk
  • LDL cholesterol