Kiran Musunuru studies innovative ways to deliver therapies to the liver, particularly targeting genetic conditions such as familial hypercholesterolemia, where cholesterol levels become dangerously high due to genetic factors. He works with a technique known as base editing, a form of CRISPR technology, which allows specific changes to DNA. This is crucial for creating new treatment avenues for patients who may not respond to standard therapies due to their unique genetic makeup. By using specially designed lipid nanoparticles, he has improved the effectiveness of these therapies, ensuring they can reach the liver cells more successfully.
Key findings
The new delivery method increased liver editing efficiency from 5% to 61% in certain monkeys.
This treatment led to a reduction in a specific cholesterol-related protein by up to 89% after six months.
The research highlights a potential alternative treatment for patients with homozygous familial hypercholesterolemia, who can't use traditional therapeutic methods.
Frequently asked questions
Does Dr. Musunuru study genetic cholesterol disorders?
Yes, he focuses on genetic conditions like homozygous familial hypercholesterolemia, which causes extremely high cholesterol levels.
What treatments has Dr. Musunuru researched?
He has researched CRISPR-based therapies that modify liver functions and cholesterol levels using tailored delivery methods.
Is Dr. Musunuru's work relevant to patients with liver diseases?
Absolutely, his work specifically targets liver disorders and aims to provide new treatment options for patients facing genetic challenges.
Publications in plain English
Chimeric Antigen Receptor Regulatory T Cells Targeted Against Oxidized Low-Density Lipoprotein Reduce Atherosclerotic Plaque Development.
2026
Circulation
Schwab RD, Degaramo D, Hong SJ, Bi X, Faruqi A +7 more
Plain English Researchers studied a new therapy aimed at treating atherosclerosis, a condition that causes heart disease and leads to 18 million deaths each year. They created a specialized type of immune cell, called anti-OxLDL CAR Tregs, which were able to reduce plaque buildup in the arteries of mice by targeting harmful substances in the body. Specifically, this therapy cut down plaque formation significantly compared to untreated mice, suggesting it could be an effective new treatment for patients with atherosclerosis.
Who this helps: This helps patients at risk for cardiovascular disease and atherosclerosis.
Measurement and clinical interpretation of CRISPR off-targets.
2026
Nature genetics
Angelini Stewart A, Ahrens-Nicklas RC, Tsai SQ, Musunuru K, Giannikopoulos P +1 more
Plain English This study looked at CRISPR genetic therapies, which are innovative treatments for diseases that don’t have effective options. Researchers found that while it's ideal for these therapies to have zero unintended effects on genes (called "off-targets"), in reality, some off-target effects are inevitable. They created a clear method for assessing these off-target effects to ensure safety, helping to move CRISPR therapies from research into actual medical use.
Who this helps: This benefits patients who are seeking new treatment options for currently untreatable diseases.
CRISPR/Cas9 Screens Implicate RARA and SPNS1 in Doxorubicin Cardiotoxicity.
2026
JACC. CardioOncology
McDermott-Roe C, Lv W, Shao Y, Hoshino A, Arany Z +1 more
Plain English This study looked at how the gene Retinoic Acid Receptor Alpha (RARA) and a protein called SPNS1 affect heart damage caused by the chemotherapy drug doxorubicin (DOX). Researchers found that when RARA was blocked, heart cells died more easily from DOX, but activating RARA helped protect them. They also discovered that problems with SPNS1 caused too much DOX to accumulate in heart cells, leading to more cell death. Understanding these mechanisms is important for finding new ways to protect patients' hearts during cancer treatment.
Who this helps: This helps cancer patients undergoing treatment with doxorubicin.
Gene Editing Therapy in Cardiovascular Disease: 2026 ACC Scientific Statement: A Report of the American College of Cardiology.
2026
Journal of the American College of Cardiology
Ambardekar AV, Bhatt A, Hoekstra M, Kelly MA, Musunuru K +1 more
Plain English This paper studies the potential of gene editing therapies for treating cardiovascular diseases caused by genetic factors. Researchers found that advancements like CRISPR technology and new delivery methods, particularly using lipid nanoparticles, could make targeted genetic treatments possible. This is important because it brings us closer to curative solutions for specific heart diseases associated with genetic issues, potentially transforming how these conditions are treated.
Who this helps: Patients with genetic cardiovascular diseases and their doctors benefit from these advancements.
Improved specificity and efficiency ofadenine base editing therapies with hybrid guide RNAs.
2025
bioRxiv : the preprint server for biology
Whittaker MN, Testa LC, Brooks DL, Quigley A, Said H +12 more
Plain English This study focused on improving a gene-editing treatment for genetic disorders like phenylketonuria (PKU) and pseudoxanthoma elasticum (PXE). Researchers found that using modified guide RNAs (called hybrid gRNAs) significantly reduced unwanted changes to other genes—by 90%—while effectively targeting the desired genes. This advancement could make gene-editing therapies safer and more effective for patients with these genetic conditions.
Who this helps: This helps patients with PKU, PXE, and hereditary tyrosinemia type 1.
Building Better Medicine: Translational Justice and the Quest for Equity in US Healthcare.
2025
The American journal of bioethics : AJOB
Allyse MA, Agam P, Bombard Y, Feys R, Horstmann M +8 more
Plain English This research paper explores how the US healthcare system, despite advancements in medicine, still has significant health disparities affecting marginalized groups. The authors argue that simply focusing on the safety and effectiveness of new treatments is not enough; we also need to consider how these innovations impact different communities fairly. They introduce the idea of "translational justice," which would help ensure that medical advancements benefit everyone, not just those who are already well-served by the healthcare system.
Who this helps: This helps patients, especially those in marginalized communities who face greater health disparities.
Patient-Specific In Vivo Gene Editing to Treat a Rare Genetic Disease.
2025
The New England journal of medicine
Musunuru K, Grandinette SA, Wang X, Hudson TR, Briseno K +40 more
Plain English This study focused on using a new gene-editing therapy to treat a rare genetic condition called carbamoyl-phosphate synthetase 1 deficiency, which can be deadly in infants. After treating a baby with this customized therapy, researchers found that within 7 weeks, the child was able to eat more protein and needed less medication without any serious side effects. This is significant because it shows that personalized gene editing may improve outcomes for infants with severe genetic diseases.
Who this helps: This helps patients with rare genetic disorders and their families.
Moving Therapeutic Genome Editing into Global Clinical Trials and Medicine.
2025
The CRISPR journal
Musunuru K, Urnov F
Plain English This paper discusses the journey of CRISPR-based therapies, which are advanced gene-editing treatments, from laboratory research to testing in real patients. Over the past 20 years, experts like Kiran Musunuru and Fyodor Urnov have worked through many challenges to bring these therapies closer to clinical use, sharing insights on current innovations and future possibilities. This matters because effective gene therapies could potentially transform treatment for various genetic disorders and improve patient outcomes.
Who this helps: This helps patients with genetic disorders seeking new treatment options.
Gene therapy and genome editing for lipoprotein disorders.
2025
European heart journal
Gurevitz C, Bajaj A, Khera AV, Do R, Schunkert H +2 more
Plain English This research paper looks at how gene therapy and genome editing could change the way we treat lipoprotein disorders, which are conditions that raise the risk of heart disease. It highlights how new genetic treatments, like CRISPR and RNA-based therapies, could provide long-lasting solutions instead of relying on daily medications. The study emphasizes that these advances could improve patient care by personalizing treatment based on individual genetic risks.
Who this helps: This benefits patients with lipoprotein disorders and their doctors.
Advancing gene-editing platforms to improve the viability of rare-disease therapeutics: key insights from a 2024 Scientific Exchange hosted by ARM, ISCT, and Danaher.
2025
Cytotherapy
Urnov F, Kassim S, Musunuru K, Liu D, Lee A +14 more
Plain English This research focused on improving treatments for rare genetic diseases using advanced gene-editing techniques. The findings revealed that by creating stable and reusable processes for developing multiple therapies, researchers could cut the time needed to begin patient treatment from years to just 6 months, achieving efficiency gains of up to five times. This matters because it makes the development of lifesaving therapies faster and more efficient, potentially providing hope to those with rare diseases.
Who this helps: Patients with rare genetic diseases.
Systemic delivery of biotherapeutic RNA to the myocardium transiently modulates cardiac contractility in vivo.
2025
Proceedings of the National Academy of Sciences of the United States of America
Shuvaev VV, Tam YK, Lee BW, Myerson JW, Herbst A +27 more
Plain English This study looked at a new way to deliver therapeutic RNA specifically to the heart using special lipid nanoparticles (LNP). Researchers found that when they injected these nanoparticles into mice, they could target the heart and significantly reduce a key protein (SERCA2A) that regulates heart muscle contraction, resulting in marked changes in heart function. This is important because it opens up new possibilities for treating heart diseases, which are the top cause of death globally.
Who this helps: Patients with heart disease.
Improved specificity and efficiency of in vivo adenine base editing therapies with hybrid guide RNAs.
2025
Nature biomedical engineering
Whittaker MN, Testa LC, Quigley A, Brooks DL, Grandinette SA +14 more
Plain English This study looked at new ways to treat genetic disorders like phenylketonuria (PKU), pseudoxanthoma elasticum (PXE), and hereditary tyrosinemia type 1 (HT1) using a method called adenine base editing. Researchers tested hybrid guide RNAs (gRNAs) that resulted in nearly zero harmful side effects, allowing for precise corrections of gene mutations in lab models, which improved treatment effectiveness by significantly reducing unwanted changes to DNA. This is important because it makes gene editing therapies safer and more reliable for patients with these genetic disorders.
Who this helps: Patients with PKU, PXE, and HT1.
How to create personalized gene editing platforms: Next steps toward interventional genetics.
2025
American journal of human genetics
Ahrens-Nicklas RC, Musunuru K
Plain English This research paper focuses on improving personalized gene editing therapies to make them widely available for patients. The authors emphasize that to move from single treatments to standard care for everyone, we need to change and advance the rules and regulations governing these therapies. This matters because effective regulation can help ensure that personalized medicine becomes accessible, safe, and effective for everyone who needs it.
Who this helps: Patients needing personalized gene editing treatments.
Liver-directed base editing ofprevents ectopic calcification in a variant-humanized mouse model of pseudoxanthoma elasticum.
2025
Molecular therapy. Nucleic acids
Testa LC, Obiri-Yeboah D, Said H, Qu P, Levine MA +4 more
Plain English Researchers studied a genetic disorder called pseudoxanthoma elasticum (PXE), which leads to unhealthy calcification in the skin, eyes, and blood vessels due to a gene mutation. They found that correcting this mutation in the liver of mice restored a compound that prevents calcification, stopping skin calcification in mice on both regular and high-risk diets. This approach shows promise as a lasting treatment for PXE, potentially offering a new way to help patients heal from this disorder.
Who this helps: Patients with pseudoxanthoma elasticum.
Base editing strategies forcorrection of two highly recurrent phenylketonuria variants.
2025
Molecular therapy. Nucleic acids
Quigley A, Jindal I, Campion T, Rutherford D, Han Y +6 more
Plain English This study focused on finding new ways to correct genetic mutations that cause phenylketonuria (PKU), a genetic disorder. Researchers tested different combinations of gene-editing tools and found effective methods for correcting the second and third most common PKU mutations in lab mice, showing efficient results. This is important because it could lead to better treatments for PKU patients, potentially improving their health and quality of life.
Who this helps: Patients with phenylketonuria.
Efficient prime editing in mouse brain, liver and heart with dual AAVs.
2024
Nature biotechnology
Davis JR, Banskota S, Levy JM, Newby GA, Wang X +9 more
Plain English This study explored new ways to deliver genetic editing tools called prime editors in mice to treat genetic disorders. Researchers developed two improved methods using a virus to carry these tools, achieving up to 46% editing efficiency in the liver, 42% in the brain, and 11% in the heart. Importantly, these methods did not cause harmful side effects, making it easier to study and potentially treat diseases like Alzheimer's and coronary artery disease caused by genetic factors.
Who this helps: This benefits patients with genetic disorders and doctors looking for effective treatments.
A base editing strategy using mRNA-LNPs for in vivo correction of the most frequent phenylketonuria variant.
2024
HGG advances
Brooks DL, Whittaker MN, Said H, Dwivedi G, Qu P +4 more
Plain English This study focused on a specific genetic change that causes phenylketonuria (PKU), a disorder that leads to dangerous levels of phenylalanine in the blood. Researchers developed a new editing technique that successfully corrected this genetic change in mice, bringing blood phenylalanine levels back to normal within 48 hours. This is important because it shows a promising way to treat PKU, which affects many people with this genetic condition.
Who this helps: Patients with phenylketonuria.
Plain English Researchers created a new tool that can turn off specific genes more effectively and safely than before. This tool improves how well genes can be targeted, how long the effects last, and how flexible it is to use, making it a promising development in gene editing. This matters because better gene editing can lead to more effective treatments for various genetic disorders.
Who this helps: Patients with genetic diseases.
Plain English This paper examines how advanced CRISPR technologies are being used to study and treat heart and blood vessel diseases. The researchers looked at different CRISPR methods and their effects on cardiovascular research, revealing promising treatment options for conditions like high cholesterol and Duchenne muscular dystrophy. This matters because it opens the door to new ways to tackle serious health issues that affect many people.
Who this helps: Patients with cardiovascular diseases and related conditions.
An Overview of Genome Editing in Cardiovascular and Metabolic Diseases.
2023
Advances in experimental medicine and biology
Musunuru K
Plain English This research paper looks at genome editing, especially using a technology called CRISPR, and how it can be used to treat heart and metabolic diseases. It highlights major advances in using this technique for understanding diseases, diagnosing them, and developing new treatments. These findings are important because they represent a significant step forward in potentially improving health outcomes for patients with these conditions.
Who this helps: This helps patients with cardiovascular and metabolic diseases.
Evaluating the Contribution of Cell Type-Specific Alternative Splicing to Variation in Lipid Levels.
2023
Circulation. Genomic and precision medicine
Gawronski KAB, Bone WP, Park Y, Pashos EE, Wenz BM +7 more
Plain English This research focused on how specific changes in gene expression, called alternative splicing, affect lipid levels in the body. The scientists examined cells derived from stem cells and liver cells, finding over 1,300 genetic variations related to splicing in liver-like cells and more than 1,400 in stem cells. They discovered that some of these gene variations also relate to lipid levels, which could lead to better understanding and treatment of conditions like cardiovascular disease.
Who this helps: This research benefits patients with heart-related issues and doctors looking to understand their genetic risks better.
Epigenome Editing Durability Varies Widely Across Cardiovascular Disease Target Genes.
2023
bioRxiv : the preprint server for biology
Whittaker MN, Testa LC, Quigley A, Jindal I, Cortez-Alvarado SV +5 more
Plain English This study explored a new way to edit genes related to heart health, specifically looking at three genes linked to cholesterol and blood pressure: PCSK9, ANGPTL3, and AGT. Researchers found that while some approaches led to long-lasting reductions in gene activity and increased methylation (a process that can silence genes) for the PCSK9 and ANGPTL3 genes, others only provided temporary effects. This is important because it shows that while gene editing could offer lasting solutions to conditions like high cholesterol and hypertension, not all edits will last as long, which could impact treatment effectiveness.
Who this helps: This research benefits patients with cardiovascular diseases, providing insights for more effective therapies.
Plain English This research focused on phenylketonuria (PKU), a genetic disorder that causes harmful levels of a substance called phenylalanine in the blood. The study found that using a precise gene-editing technique, researchers were able to completely normalize blood phenylalanine levels in mice with a common PKU variant within just 48 hours after treatment. This breakthrough could lead to a new, effective treatment option for some patients with PKU, instead of relying on long-term dietary restrictions.
Who this helps: This helps patients with phenylketonuria and their families.
Base Editing and Prime Editing: Potential Therapeutic Options for Rare and Common Diseases.
2023
BioDrugs : clinical immunotherapeutics, biopharmaceuticals and gene therapy
Testa LC, Musunuru K
Plain English This study looked at two advanced gene-editing techniques called base editing and prime editing, which could offer new treatments for genetic disorders affecting around 350 million people worldwide. The researchers found that these methods can safely and effectively correct harmful genetic mutations without the risks associated with older gene-editing techniques. This matters because it opens up the possibility of targeted therapies for many rare diseases that currently lack effective treatments.
Who this helps: Patients with genetic disorders and their families.
Plain English This study looked at a specific genetic change (c.1222C>T) that leads to the most common form of phenylketonuria (PKU), a disorder that causes harmful levels of the amino acid phenylalanine in the blood. Researchers found that existing treatments often fail to keep phenylalanine levels in check for many patients, who struggle to follow monitoring guidelines. They developed a new editing technique that successfully corrected this genetic variant in lab models, significantly lowering phenylalanine levels, achieving up to 52% correction in the liver, which indicates promise for treating PKU.
Who this helps: This helps patients with phenylketonuria (PKU) and their families.
GalNAc-Lipid nanoparticles enable non-LDLR dependent hepatic delivery of a CRISPR base editing therapy.
2023
Nature communications
Kasiewicz LN, Biswas S, Beach A, Ren H, Dutta C +13 more
Plain English This study focused on a new way to deliver a CRISPR therapy to the liver using special nanoparticles that don't rely on a common receptor that some patients lack. The researchers found that by modifying these nanoparticles, they could increase liver editing from 5% to 61% in certain monkeys, and this treatment led to a significant decrease in a specific protein related to cholesterol levels, achieving reductions of up to 89% six months later. This matters because it provides a potential treatment option for patients who cannot use traditional methods due to their genetic conditions.
Who this helps: Patients with homozygous familial hypercholesterolemia and other liver-related disorders.
Therapeutic application of genome editing in dyslipidemia.
2022
Current opinion in lipidology
Whittaker MN, Musunuru K
Plain English This study looked at how genome editing can be used to lower unhealthy blood cholesterol levels. Researchers successfully targeted a specific gene in the livers of nonhuman primates, resulting in a significant reduction of LDL cholesterol—a type of bad cholesterol. This finding is important because it shows that genome editing could lead to long-lasting treatments for people with high cholesterol, potentially changing how dyslipidemia is managed.
Who this helps: This helps patients with high cholesterol.
Moving toward genome-editing therapies for cardiovascular diseases.
2022
The Journal of clinical investigation
Musunuru K
Plain English This research paper looks at how genome-editing technologies could lead to long-lasting treatments for cardiovascular diseases, which usually require ongoing medication for life. It highlights different editing methods and emphasizes the potential to create "one-and-done" therapies, specifically focusing on a key target protein called PCSK9. The findings show that these new approaches could change how we treat heart conditions by potentially offering more effective and convenient options for patients.
Who this helps: Patients with cardiovascular diseases.
Engineered virus-like particles for efficient in vivo delivery of therapeutic proteins.
2022
Cell
Banskota S, Raguram A, Suh S, Du SW, Davis JR +9 more
Plain English Researchers developed a new type of engineered virus-like particle (eVLP) that can safely deliver gene-editing tools directly into living organisms. In tests, these eVLPs significantly lowered bad cholesterol levels in mice by 78% after editing 63% of liver cells, and they also helped restore some vision in blind mice. This approach shows great potential for delivering treatments effectively with minimal side effects compared to older methods.
Who this helps: This benefits patients needing genetic therapies, particularly those with high cholesterol or genetic eye diseases.
Adipocyte-Specific Modulation of KLF14 Expression in Mice Leads to Sex-Dependent Impacts on Adiposity and Lipid Metabolism.
2022
Diabetes
Yang Q, Hinkle J, Reed JN, Aherrahrou R, Xu Z +5 more
Plain English This study looked at a gene called KLF14 and its effects on fat storage and metabolism in male and female mice. Researchers found that when female mice had less KLF14, they gained more body fat and shifted fat storage from under the skin to around the organs, while male mice showed the opposite effect. This is important because it highlights how KLF14 plays a role in obesity and diabetes differently in men and women, suggesting that boosting KLF14 in women with obesity could help improve their metabolic health.
Who this helps: Patients with obesity and type 2 diabetes, especially women.
Mutations and Cardiovascular Function in Breast Cancer Survivors.
2022
Frontiers in cardiovascular medicine
Demissei BG, Lv W, Wilcox NS, Sheline K, Smith AM +7 more
Plain English This study examined whether genetic mutations increase the risk of heart problems in breast cancer survivors treated with a chemotherapy drug called doxorubicin. Researchers found that breast cancer survivors who received doxorubicin had lower heart function, as measured by left ventricular ejection fraction (a key indicator of heart health), regardless of their mutation status—5.4% lower for mutation carriers and 4.8% lower for non-carriers. This is important because it suggests that breast cancer survivors may face heart health risks from doxorubicin treatment, but those with certain genetic mutations may not be at greater risk than others.
Who this helps: This helps breast cancer survivors and their doctors understand potential heart health risks associated with chemotherapy.
Efficient in vivo base editing via single adeno-associated viruses with size-optimized genomes encoding compact adenine base editors.
2022
Nature biomedical engineering
Davis JR, Wang X, Witte IP, Huang TP, Levy JM +5 more
Plain English This study focused on improving a technique called base editing, which allows scientists to make precise changes to DNA. Researchers discovered that using a single, smaller virus to deliver the editing tools in mice was much more effective than the previous method that used two viruses. They achieved successful editing rates of 66% in the liver, 33% in the heart, and 22% in muscle, along with significant decreases in cholesterol levels.
Who this helps: This benefits patients with genetic disorders related to cholesterol and other conditions that could be treated with gene editing.
Publisher Correction: Efficient in vivo base editing via single adenoassociated viruses with size-optimized genomes encoding compact adenine base editors.
2022
Nature biomedical engineering
Davis JR, Wang X, Witte IP, Huang TP, Levy JM +5 more
Adenine base editing to treat progeria syndrome and extend the lifespan.
2021
The journal of cardiovascular aging
Musunuru K
Plain English This study looked at using a new technique called adenine base editing to target and fix a specific genetic mutation that causes Hutchinson-Gilford progeria syndrome (HGPS), a fatal disease that makes children age rapidly. The researchers found that this editing could potentially reduce the harmful effects of the mutation, which leads to serious health issues and early death; while no specific numbers were given, the study indicates that it could significantly improve the lives of affected individuals. This work is important because it opens the door to new treatments for a condition that currently has no cure.
Who this helps: This helps patients with Hutchinson-Gilford progeria syndrome and their families.
Detoxifying chemotherapy with genetics-guided stem cell modeling: A personalized affair.
2021
Cell stem cell
Brooks DL, Musunuru K
Plain English Researchers studied how a specific genetic variation related to a gene called RARG affects the heart's response to the chemotherapy drug doxorubicin. They found that this genetic marker can predict which patients are at higher risk for heart damage from the drug. This discovery could lead to personalized treatments that protect at-risk patients from heart problems during chemotherapy.
Who this helps: Patients undergoing chemotherapy who are at risk of heart damage.
In utero adenine base editing corrects multi-organ pathology in a lethal lysosomal storage disease.
2021
Nature communications
Bose SK, White BM, Kashyap MV, Dave A, De Bie FR +14 more
Plain English This study looked at a treatment method called in utero base editing to fix a genetic problem that causes Mucopolysaccharidosis type I (MPS-IH), a serious condition affecting many organs. The researchers found that using a specific virus to deliver the editing tool before birth corrected the genetic mutation in liver and heart cells and resulted in better survival rates and improved health, particularly for muscles and the heart. This treatment shows promise for improving outcomes for newborns with this lethal genetic disorder and could also help with other similar diseases.
Who this helps: This benefits patients with MPS-IH and their families.
Xiao Wang Rebecca C Ahrens-Nicklas Ping Qu Mohamad-Gabriel Alameh Madelynn N Whittaker David R Liu Dominique L Brooks Lauren C Testa Aidan Quigley Ishaan Jindal
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