ATTRUBY (acoramidis) is now FDA-APPROVED for ATTR-CM in U.S.
Attruby (Acoramidis), was approved by the FDA on November 22, 2024 for ATTR-CM patients (both wild-type and hereditary) in the U.S.
Orally-administered, Attruby is a near complete TTR stabilizer (>= 90%), designed to reduce cardiovascular death and cardiovascular-related hospitalization. In addition, Attruby has been shown to preserve the native function of TTR as a transport protein of thyroxine and vitamin A.
To honor the courage of our U.S. clinical trial participants, BridgeBio will provide these patients Attruby free for life.
FDA CLEARS AI SCREENING TOOL FOR CARDIAC AMYLOIDOSIS
“Echocardiography is a powerful tool for evaluating cardiac structure and function and is central to the detection and monitoring of disease,” Ross Upton, PhD, CEO and founder of Ultromics, said in a statement. “However, there are some diseases that are very challenging for even the most expert clinician to detect on an echocardiogram. Requiring only a single apical four-chamber image, EchoGo Amyloidosis identifies cardiac amyloidosis and will help drive earlier access to appropriate treatment and care for patients with this underdiagnosed disease.”
Our patient speakers at the Amyloidosis Speakers Bureau are powerful educators and offer compelling insights. Have a listen to this brief clip from Rayna. She talks about the mental side of her fighting an incurable disease and what she focused on to survive.
AL Amyloidosis: The Past, Present, and Future
Dr. Morie Gertz, professor of medicine at the Mayo Clinic in Rochester and world renowned expert in amyloidosis, shares his views on the past, present, and future treatments of AL (light chain) amyloidosis. Over his four decades of experience with this disease, he has diagnosed and treated thousands of patients, advanced research, and managed countless clinical trials. This makes him the perfect professor to orate on the dramatic evolution of treating this historically devastating disease to the optimism of today, and the breakthrough world of tomorrow. This is a must-watch video from a legendary expert.
Patient Panel Provides Medical Students Insights into Living with a Rare Disease
The Chicago College of Osteopathic Medicine (CCOM) held a patient panel about amyloidosis, a rare disease where abnormal proteins build up in different tissues and organs. The patient panel was an opportunity for medical students to increase their awareness of amyloidosis and hear a patient’s experience living with the rare disease. According to the Amyloidosis Foundation, there are less than 200,000 people in the U.S. who have been diagnosed with amyloidosis.
George Borrelli, D.O., Chair, Clinical Integration, CCOM, welcomed the audience to the patient panel and discussed the importance of the supplemental learning opportunity for the students. “It gives you an opportunity to not only learn about a disease, but to get an account from a patient who has actually gone through the situation.” Dr. Borrelli elaborated, “The earlier this disease is diagnosed, the better the outcomes are. For so many years, this disease has been an enigma, difficult to diagnose, and slipped through many clinicians’ fingers.”
Ozzie Giglio, who is living with amyloidosis, visited Midwestern University and shared his experience with the rare disease. Ozzie is a patient educator with the Amyloidosis Speakers Bureau.
Medical student Kelly Brake (CCOM ’27) said, “It was nice to hear a patient account during our coursework years. It’s a good reminder of the challenges that patients face in healthcare.” She also expressed her gratitude for CCOM’s enrichment of classroom learning with experiences like this event.
The link below is to the full article published by Midwestern University.
Dr. Melissa Hershman, assistant professor from the OHSU Division of Gastroenterology & Hepatology, provides an informative overview of how, and where, amyloidosis can present in the G.I. tract. She reviews patient symptoms, many of which are nonspecific and can be associated with other more common issues, delaying diagnosis. Dr. Hershman goes through how G.I. amyloidosis is tested for, where in the G.I. tract biopsies are most commonly performed, and how the tissue is stained for diagnosis by pathology. In closing, she reviews the array of treatments available to assist patients.
Hereditary Amyloidosis: The V122I Variant
Hereditary Amyloidosis in Americans of African Descent: ATTR V122I Variant
Amyloidosis, still considered a relatively rare disease, can take several forms. Each slightly different, but most sharing similar debilitating symptoms of cardiac and/or neurological impairment, or both. It is viewed by many experts that amyloidosis has been presenting in plain sight and missed, or wildly underdiagnosed, for decades and, in some cases, generations. Thankfully, education to raise awareness within the healthcare community, along with improvements in diagnostic tools and testing, the journey to diagnosis and treatment is becoming more visible.
The hereditary transthyretin amyloidosis (hATTR; also called variant amyloidosis ATTRv) type results from a genetic mutation of a protein, transthyretin, which is produced in the liver and circulates throughout the body. The mutation causes the TTR protein to misfold, becoming unstable and depositing in organs and nerve systems causing impairment and eventual organ failure. Common symptoms for the disease include bilateral carpel tunnel syndrome, muscle weakness, cardiomyopathy, polyneuropathy, GI issues especially chronic diarrhea and constipation, and both nuisance and serious concerns and if untreated can lead to death. Early diagnosis, genetic testing to identify the exact genetic mutation, and treatment are important to slow the progression of the disease and conserve quality of life.
SIGNIFICANTLY UNDER-DIAGNOSED
Considered a rare disease, advances in diagnosis have shown that it is less rare than originally thought.
Familial amyloidosis caused by a transthyretin mutation occurs in approximately 1 in 100,000 Caucasians in the U.S, and more commonly in African Americans (approximately 4% in that population). This condition is prevalent in Portugal, Sweden, Japan, Ireland, Spain, France, Finland, Germany and Greece. Symptoms usually begin between 40 and 65 years of age.
To date over one hundred variants of TTR have been identified as causing ATTR amyloidosis and they are distributed worldwide with concentrations in various ethnic populations. One variant, V122I is most commonly found in people with African and especially West African ancestry. It has been distributed worldwide but especially in North America and the Caribbean through historic slave trade and the migration of populations. This variant is most often associated with ATTR-CM (Amyloidosis with cardiomyopathy) and heart failure.
Worldwide Carrier Rates of TTR V122I in Self-Reported Countries/Regions
From Multicenter Study JAMA 2019 Dec 10;322(22):2191-2202.
doi: 10.1001/jama.2019.17935.
In an article by J. Buxdaum and F. Ruberg in the Journal Genetics in Medicine January 2017, the authors stated the following findings.
Since the identification of a valine-to-isoleucine substitution at position 122 (TTR V122I; pV142I) in the transthyretin (TTR)-derived fibrils extracted from the heart of a patient with late-onset cardiac amyloidosis, it has become clear that the amyloidogenic mutation and the disease occur almost exclusively in individuals of identifiable African descent. In the United States, the amyloidogenic allele frequency is 0.0173 and is carried by 3.5% of community-dwelling African Americans. Genotyping across Africa indicates that the origin of the allele is in the West African countries that were the major source of the slave trade to North America. At autopsy, the allele was found to be associated with cardiac TTR amyloid deposition in all the carriers after age 65 years; however, the clinical penetrance varies, resulting in substantial heart disease in some carriers and few symptoms in others. The allele has been found in 10% of African Americans older than age 65 with severe congestive heart failure. At this time there are potential forms of therapy in clinical trials. The combination of a highly accurate genetic test and the potential for specific therapy demands a greater awareness of this autosomal dominant, age-dependent cardiac disease in the cardiology community.
Genet Med advance online publication 19 January 2017
The prevalence and distribution of the amyloidogenic transthyretin (TTR) V122I allele in Africa.
Dr. Martha Grogan, director of the Cardiac Amyloid Clinic of Mayo Clinic in Rochester, Minnesota commented in an interview published in the Mayo News Network (https://newsnetwork.mayoclinic.org/discussion/expert-alert-cardiac-amyloidosis-masquerades-as-other-conditions-1-type-affects-more-black-americans/) that amyloidosis can be tricky to suspect because symptoms may not be initially present and they may mimic other more common diseases. Currently there are options for free saliva or blood tests through several pharmaceutical companies. To determine the type of the disease genetic testing is important.
The University of Pennsylvania and the Icahn School of Medicine at Mount Sinai conducted a study of 52,492 participants of which 11,143 were of self-reported African ancestry. https://jamanetwork.com/journals/jama/fullarticle/2757227
An excellent discussion of the results emphasizes the conclusion that a significant association of TTR V122I and heart failure in the tested population, primarily in those of West African ancestry, exists. In addition, they confirm previous studies that have suggested a high rate of underdiagnosis of hATTR-CM in cases of cardiomyopathy and heart failure in elderly patients of African Ancestry. The discussion further suggests that this is likely due to lack of information and familiarity with the disease in the medical community.
CITATION: Damrauer SM, Chaudhary K, Cho JH, et al. Association of the V122I Hereditary Transthyretin Amyloidosis Genetic Variant With Heart Failure Among Individuals of African or Hispanic/Latino Ancestry. JAMA. 2019;322(22):2191–2202. doi:10.1001/jama.2019.17935. https://pubmed.ncbi.nlm.nih.gov/31821430/
Discussion of a different study of 7,514 African American participants in the US considered the question of the association between genetic variation and the risk of heart failure. This study was conducted by the University of Alabama, University of Colorado, Columbia University, and Cornel University. The results are similar to those in the University of Pennsylvania study discussed above, with additional comments that more subtle symptoms and changes may be apparent well before the typical onset of significant disease, average age 65, and the need for earlier screening for early detection and treatment.
An autosomal-dominant disease, hATTR-CM has a median survival of nearly 2.5 years without treatment after receiving a diagnosis.34,35 Extrapolating the hATTR-CM–associated Val122Ile variant frequency to the population level suggests that approximately 1.4 million Black individuals carry this variant implicated in the development of heart failure and reduced overall survival. Despite the possible clinical implications, the Val122Ile TTR variant, which is seen relatively more commonly among individuals of African ancestry, is not included in the list of clinically actionable deleterious variants compiled by the American College of Medical Genetics and Genomics.9 Thus, this potentially deleterious variant may not be reported as clinically actionable, thereby reducing physician vigilance for hATTR-CM.
Findings In this retrospective cohort study that included 7,514 Black participants in the US with a median 11.1 years of follow-up, the incidence of heart failure was 15.6 per 1000 person-years among Val122Ile variant carriers compared with 7.2 per 1000 person-years among noncarriers, with an adjusted hazard ratio of 2.43.
Meaning Being a carrier of the Val122Ile variant was significantly associated with an increased risk of heart failure among Black individuals living in the US.
CITATION: Parcha V, Malla G, Irvin MR, et al. Association of Transthyretin Val122Ile Variant With Incident Heart Failure Among Black Individuals. JAMA. 2022;327(14):1368–1378. doi:10.1001/jama.2022.2896
Despite the evidence that a meaningful 3-4% of the US Black population of West African ancestry likely carries the V122I genetic mutation, hereditary TTR amyloidosis remains significantly underdiagnosed and undertreated in this population.
Cardiac symptoms in elderly black patients have too often been treated for more common cardiomyopathy and heart conditions, resulting in lack of appropriate treatment and often death. Because of lack of awareness in the medical community and reduced access to expert medical care, more subtle symptoms in younger black patients generally have not caused the physicians to consider amyloidosis. Additionally, lack of genetic testing can mean that entire families are unaware of the implications of the disease.
Amyloidosis can be devastating to both patients and their families. Increased awareness of the disease, availability of testing, and FDA-approved therapies are slowly beginning to shift this dynamic. However, there is still much work to be done to close the gap between diagnosed cases and the population estimated to be affected.
Early diagnosis is key.
For additional information regarding hereditary amyloidosis:
Expert Insights: Central Nervous System and Ocular Involvement in hATTR
Dr. Chafic Karam, professor of neurology from the University of Pennsylvania, provides an informative overview of how certain mutations of hereditary transthyretin amyloidosis are being diagnosed in the central nervous system (CNS), such as the eye. It has been long believed that amyloidosis did not cross the blood brain barrier; however, evidence is showing otherwise. In addition, while most of the transthyretin protein originates in the liver, local production is found in other areas of the body such as the brain and retina. Dr. Karam will discuss how patients might present, the developing state of diagnostics, and treatments available. A slower developing symptom, with patients now living longer he predicts neurologists will see more and more patients with CNS and ocular involvement.
Expert Insights: Timing and co-occurrence of red-flag symptoms prior to a diagnosis of light chain (AL) amyloidosis
Dr. Anita D’Souza, associate professor of hematology and medical oncology from the Medical College of Wisconsin, discusses recent study findings regarding the timing and co-occurrence of symptoms within the three years prior to a diagnosis of light chain (AL) amyloidosis. Organized by organ system, Dr. D’Souza lists red-flag symptoms that patients may experience, typically presenting in varying combinations. Analyzing EHR records she sought to understand whether red-flag symptoms were indeed being identified, and how their occurrence would accumulate over time towards diagnosis.
Bottom line:
This work confirms that patients are being diagnosed within the healthcare system with multiple red-flag diagnoses before AL amyloidosis is formally diagnosed.
It is possible to catalog these diagnoses from electronic health records data and thus has the potential for earlier diagnosis of this complex disease.
This study shows the timing and combinations between these diagnoses and lays the foundation to develop clinical algorithms aimed at earlier recognition of AL amyloidosis.
Congressional Hill Briefing, Improving Care for Veterans with Rare Diseases: Establishing a National Commission
We, with other members of the amyloidosis community, were proud to join an important meeting hosted by the Center for Patient Advocacy Leaders (CPALs). They hosted a Congressional Hill Briefing, Improving Care for Veterans with Rare Diseases: Establishing a National Commission, at the U.S. Capitol Visitor Center in Washington, DC. This briefing was designed to bring together Veterans/Veterans’ advocates, rare disease advocates, patients, and congressional staff to address unmet needs of Veterans with rare diseases and explore collective action to help ensure Veterans with rare diseases get the comprehensive, patient-centered care and treatment they need and deserve.
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