Posts Tagged ‘potential’
CRISPR Therapeutics to Present Oral Presentation at the American Society of Gene & Cell Therapy (ASGCT) 2024 … – GlobeNewswire
ZUG, Switzerland and BOSTON, April 22, 2024 (GLOBE NEWSWIRE) -- CRISPR Therapeutics(Nasdaq: CRSP), a biopharmaceutical company focused on creating transformative gene-based medicines for serious diseases, today announced an oral presentation highlighting the Company's lipid nanoparticle (LNP) approach for ocular editing will be presented at the American Society of Gene & Cell Therapy (ASGCT) 2024 Annual Meeting, taking place May 7 11, 2024, in Baltimore, MD and virtually.
The abstract describes our proprietary capabilities to deliver to and edit genes in the eye, opening a potential new focus area. Multiple LNPs as well as modified gRNAs and mRNAs were screened to achieve maximal editing in vivo. These optimized components have been applied to target myocilin (MYOC). Mutations of MYOC in trabecular meshwork cells have been linked to severe glaucomatous conditions. In human primary trabecular meshwork cells, up to 95% MYOC editing and 85% protein knockdown were seen. This novel approach aims to facilitate glaucoma treatment using transient expression of editing machinery targeting MYOC.
Title: Development of an In Vivo Non-Viral Ocular Editing Platform and Application to Potential Treatments for Glaucoma Session Type: In-Person Oral Presentation Session Title: Ophthalmic and Auditory: Delivery Innovations Abstract Number:87 Location: Room 318 323 Session Date and Time: Wednesday, May 8, 2024, 1:30 p.m. 3:15 p.m. ET
The accepted abstract is available online on the ASGCT website. The data are embargoed until 6:00 a.m. ET on the presentation day, Wednesday May 8, 2024. A copy of the presentation will be available at http://www.crisprtx.com once the presentation concludes.
About CRISPR Therapeutics Since its inception over a decade ago, CRISPR Therapeutics has transformed from a research-stage company advancing programs in the field of gene editing, to a company that recently celebrated the historic approval of the first-ever CRISPR-based therapy and has a diverse portfolio of product candidates across a broad range of disease areas including hemoglobinopathies, oncology, regenerative medicine, cardiovascular, autoimmune, and rare diseases. CRISPR Therapeutics advanced the first-ever CRISPR/Cas9 gene-edited therapy into the clinic in 2018 to investigate the treatment of sickle cell disease or transfusion-dependent beta thalassemia, and beginning in late 2023, CASGEVY (exagamglogene autotemcel) was approved in some countries to treat eligible patients with either of those conditions. The Nobel Prize-winning CRISPR science has revolutionized biomedical research and represents a powerful, clinically validated approach with the potential to create a new class of potentially transformative medicines. To accelerate and expand its efforts, CRISPR Therapeutics has established strategic partnerships with leading companies including Bayer and Vertex Pharmaceuticals. CRISPR Therapeutics AG is headquartered in Zug, Switzerland, with its wholly-owned U.S. subsidiary, CRISPR Therapeutics, Inc., and R&D operations based in Boston, Massachusetts and San Francisco, California, and business offices in London, United Kingdom. To learn more, visit http://www.crisprtx.com.
CRISPR Therapeutics Forward-Looking StatementThis press release may contain a number of forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, as amended, including statements regarding CRISPR Therapeutics expectations about any or all of the following: (i) its ongoing and/or planned preclinical studies, clinical trials and pipeline products and programs, including, without limitation, the status of such studies and trials, potential expansion into new indications and expectations regarding data generally (including expected timing of data releases) as well as the data in the above-described abstract and any associated poster and the data that is being presented as described above; (ii) the safety, efficacy and clinical progress of its various clinical and preclinical programs including the program described in the oral presentation and poster; (iii) the data that will be generated by ongoing and planned preclinical studies and/or clinical trials, and the ability to use that data for the design and initiation of further preclinical studies and/or clinical trials; and (iv) the therapeutic value, development, and commercial potential of CRISPR/Cas9 gene editing technologies and therapies. Without limiting the foregoing, the words believes, anticipates, plans, expects and similar expressions are intended to identify forward-looking statements. You are cautioned that forward-looking statements are inherently uncertain. AlthoughCRISPR Therapeuticsbelieves that such statements are based on reasonable assumptions within the bounds of its knowledge of its business and operations, forward-looking statements are neither promises nor guarantees and they are necessarily subject to a high degree of uncertainty and risk. Actual performance and results may differ materially from those projected or suggested in the forward-looking statements due to various risks and uncertainties. These risks and uncertainties include, among others: the efficacy and safety results from ongoing pre-clinical studies and/or clinical trials will not continue or be repeated in ongoing or planned pre-clinical studies and/or clinical trials or may not support regulatory submissions;pre-clinical study and/or clinical trial results may not be favorable or support further development; one or more of its product candidate programs will not proceed as planned for technical, scientific or commercial reasons; future competitive or other market factors may adversely affect the commercial potential for its product candidates; uncertainties inherent in the initiation and completion of preclinical studies for its product candidates and whether results from such studies will be predictive of future results of future studies or clinical trials; uncertainties about regulatory approvals to conduct trials or to market products; uncertainties regarding the intellectual property protection for its technology and intellectual property belonging to third parties, and the outcome of proceedings (such as an interference, an opposition or a similar proceeding) involving all or any portion of such intellectual property; and those risks and uncertainties described under the heading "Risk Factors" in CRISPR Therapeutics most recent annual report on Form 10-K and in any other subsequent filings made byCRISPR Therapeuticswith theU.S. Securities and Exchange Commission, which are available on theSEC'swebsite atwww.sec.gov.CRISPR Therapeuticsdisclaims any obligation or undertaking to update or revise any forward-looking statements contained in this press release, other than to the extent required by law.
Investor Contact: Susan Kim +1-617-307-7503 susan.kim@crisprtx.com
Media Contact: Rachel Eides +1-617-315-4493 rachel.eides@crisprtx.com
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CRISPR Therapeutics to Present Oral Presentation at the American Society of Gene & Cell Therapy (ASGCT) 2024 ... - GlobeNewswire
CRISPR Center Advances Genetic Disease Research – INSIGHT Into Diversity
A formidable collaboration between three University of California (UC) schools and leading global life sciences and diagnostics innovator the Danaher Corporation heralds a new era in the fight against rare and deadly genetic diseases, such as sickle cell disease which predominantly impacts Black and Hispanic populations in the U.S. through the innovative use of CRISPR technology.
Spearheaded by the Innovative Genomics Institute (IGI), this joint effort brings together genetics researchers and clinician experts from UC San Francisco, UC Los Angeles, UC Berkeley, and other research institutions, to expedite the development of curative therapies for diseases that have previously lacked effective treatments.
The Danaher-IGI Beacon for CRISPR Cures center will leverage genome editing technology to research a wide range of genetic disorders. The center, which will be led out of the IGI headquarters at UC Berkeley, combines expertise in genetics research, clinical practice, and industry resources to accelerate the development and deployment of CRISPR-based treatments. The goal is to establish new standards for safety and efficacy while streamlining the path from preclinical research to clinical trials.
The unique nature of CRISPR makes it ideal for developing and deploying a platform capability for CRISPR cures on demand, said Fyodor Urnov, PhD, IGIs Director of Technology and Translation, in a press release. Danaher and the IGI are in a unique position to potentially create a first-of-its-kind CRISPR cures cookbook that could be used by any team wishing to take on other diseases.
The centers initial focus will be on hemophagocytic lymphohistiocytosis (HLH) and Artemis-deficient severe combined immunodeficiency (ART-SCID), two conditions characterized by defects in a patients immune system. Traditional treatments for these disorders, such as bone marrow transplants, often fall short due to complications.
By targeting specific gene mutations associated with these diseases, researchers hope to develop therapies that address their underlying causes, improve outcomes, and enhance quality of life for those affected.
Using CRISPR, the IGI has already made incredible advancements in treating sickle cell disease through clinical trials at the Comprehensive Sickle Cell Center at UC San Francisco Benioff Childrens Hospital in Oakland which was established to address racial biases in health care. In 2021, the center received $17 million in funding to advance the use of CRISPR in sickle cell research.
This therapy has the potential to transform sickle cell disease care, said Mark Walters, MD, a pediatric professor at UC San Francisco and principal investigator of the clinical trials. If this is successfully applied in young patients, it has the potential to prevent irreversible complications of the disease.
Since then, researchers have been testing the possibility of replacing the gene that causes sickle cell with a healthy one manufactured using a patients own stem cells. Early tests have been positive, indicating a potential cure for the disease.
With CRISPR, we can speed up the development of improved therapies that can reach all the patients who need them, said Jennifer Puck, MD, a faculty member at the Jeffrey Modell Diagnostic Center for Primary Immunodeficiencies and Institute for Human Genetics, both at UC San Francisco. All patients deserve a sense of urgency. including those with rare diseases, many of whom are children.
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CRISPR Center Advances Genetic Disease Research - INSIGHT Into Diversity
Gene Therapy Well Tolerated in Wet AMD, Shows Promise in Visual Acuity – AJMC.com Managed Markets Network
A single subretinal dose of a gene therapy was not only well tolerated among patients with neovascular age-related macular degeneration (nAMD), but there was sustained expression of the RGX-314 protein for at least 2 years, showing the potential to control exudation. The results of the phase I/IIa dose escalation trial were published in The Lancet.1
Age-related macular degeneration (AMD) causes vision loss that can turn into partial blindness.
Image credit: Syda Productions - stock.adobe.com
RGX-314, also known as ABBV-RGX-314, is an adeno-associated virus serotype 8 vector that provides potential continuous suppression of VEGF-A. nAMD, also called wet AMD, causes faster vision loss than AMD and, while it doesnt cause complete blindness, can cause patients to lose central vision.2
Real-world outcomes of long-term nAMD treatment have been inferior to those seen in clinical trials because of undertreatment or nonadherence with visits for injections. Therefore, there is strong motivation to develop treatments that provide sustained suppression of VEGF-A, the authors explained.
The open-label, multiple-cohort, multicenter, phase I/IIa, dose-escalation study was conducted at 8 sites in the US with 68 patients. On day 1, all patients received intravitreal ranibizumab. At week 2, 42 who demonstrated the required anatomic response received a subretinal injection of RGX-314. There were 5 different doses being evaluated with 12 patients placed into each cohort based on dosing. The mean (IQR) age at baseline was 80 years (74-85), nearly all (41 of 42) patients were White, and 52% were female.
While all patients experienced at least 1 treatment-emergent adverse event (TEAE), most were grade 1 or 2. The most common TEAEs were postprocedure conjunctival hemorrhage and retinal pigmentary changes. There were also 7 instances of a retinal degeneration event, which were mostly grade 1, typically occurred 6 to 12 months after the gene therapy was administered, and had not resolved at the end of the study.
In 9 of 46 study eyes, reduced visual acuity was reported, although 6 of these were mild or moderate and deemed unrelated to RGX-314. However, the other 3 events were possibly related to the therapy.
The mean baseline best-corrected visual acuity (BCVA) was maintained or improved in 4 of the 5 cohorts, while cohort 1, which received 3x109 genome copies per eye, experienced a gradual reduction in BCVA over time. Patients in cohorts 3 through 5 who did not receive any supplemental antiVEGF-A injections throughout the last year of the study maintained or improved baseline BCVA.
"The publication of the ABBV-RGX-314 Phase I/IIa trial results in The Lancet reinforces the encouraging long-term clinical data observed using subretinal delivery and underscores the potential of ABBV-RGX-314 gene therapy to offer a new approach to the clinical management of wet AMD," Jeffrey S. Heier, MD, director of the Vitreoretinal Service and director of Retina Research at Ophthalmic Consultants of Boston, and primary investigator for the trial, said in a statement.3 "Wet AMD is a chronic, life-long disease and real-world evidence shows patients are losing significant vision over time, and the burden of frequent anti-VEGF injections needed to manage their wet AMD is a major reason why. A single treatment of ABBV-RGX-314 that can potentially provide long-lasting treatment outcomes and a strong safety profile would offer a novel approach to treating this serious and blinding disease."
In an interview4 ahead of the Angiogenesis, Exudation, and Degeneration 2023 meeting, Charles C. Wykoff, MD, PhD, director of research at Retina Consultants of Texas; chair of research, Retina Consultants of America; and deputy chair of ophthalmology for the Blanton Eye Institute, Houston Methodist Hospital; and coauthor on the study, explained that a gene therapy for the most common cause of irreversible blindness would be a tremendous step forward for the opportunity for management of this chronic disease.
He also noted that while gene therapy holds the promise of being one and done, data have shown that some patients do need ongoing therapy.5
"Even if we are using gene therapy, it's important to realize that these patients will continue to need retinal care and retinal follow-up," he said. "You're looking for signs of efficacy, you're monitoring them for safety, you're making sure that they get any retreatments if they need them. Of course, there's a host of other retinal issues that may come up in these patients. They're going to continue to need retina care, certainly, even in the context of gene therapy."
Reference
1. Campochiaro PA, Avery R, Brown DM, et al. Gene therapy for neovascular age-related macular degeneration by subretinal delivery of RGX-314: a phase 1/2a dose-escalation study. Lancet. 2024:S0140-6736(24)00310-6. doi:10.1016/S0140-6736(24)00310-6
2. Age-related macular degeneration. National Eye Institute. June 22, 2021. Accessed April 12, 2024. https://www.nei.nih.gov/learn-about-eye-health/eye-conditions-and-diseases/age-related-macular-degeneration
3. REGENXBIO announces Lancet publication of phase I/IIa study evaluating ABBV-RGX-314 as a one-time gene therapy for wet AMD. REGENXBIO. News release. March 28, 2024. Accessed April 12, 2024. https://regenxbio.gcs-web.com/news-releases/news-release-details/regenxbio-announces-lancet-publication-phase-iiia-study
4. Joszt L. Dr Charles Wykoff: gene therapy for wet AMD would be a tremendous opportunity. The American Journal of Managed Care. May 21, 2023. Accessed April 12, 2024. https://www.ajmc.com/view/dr-charles-wykoff-gene-therapy-for-wet-amd-would-be-a-tremendous-opportunity
5. Joszt L. Dr Charles Wykoff discusses gene therapy to treat wet age-related macular degeneration. The American Journal of Managed Care. April 23, 2023. Accessed April 12, 2024. https://www.ajmc.com/view/dr-charles-wykoff-discusses-gene-therapy-to-treat-wet-age-related-macular-degeneration
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Gene Therapy Well Tolerated in Wet AMD, Shows Promise in Visual Acuity - AJMC.com Managed Markets Network
CRISPR Therapeutics to Present at the American Society of Gene & Cell Therapy (ASGCT) 2024 Annual Meeting – GlobeNewswire
ZUG, Switzerland and BOSTON, April 01, 2024 (GLOBE NEWSWIRE) -- CRISPR Therapeutics(Nasdaq: CRSP), a biopharmaceutical company focused on creating transformative gene-based medicines for serious diseases, today announced an oral presentation at the American Society of Gene & Cell Therapy (ASGCT) 2024 Annual Meeting, taking place May 7 11, 2024, in Baltimore, MD and virtually.
Title: Development of an In Vivo Non-Viral Ocular Editing Platform and Application to Potential Treatments for Glaucoma Session Type: In-Person Oral Presentation Session Title: Ophthalmic and Auditory: Delivery Innovations Abstract Number:87 Location: Room 318 323 Session Date and Time: Wednesday, May 8, 2024, 1:30 p.m. 3:15 p.m. ET
Abstracts will be released to the public on April 22, 2024, at 4:30 p.m. ET at https://annualmeeting.asgct.org/. The data are embargoed until 6:00 a.m. ET on the presentation day, Wednesday May 8, 2024. A copy of the presentation will be available at http://www.crisprtx.com once the presentation concludes.
About CRISPR Therapeutics Since its inception over a decade ago, CRISPR Therapeutics has transformed from a research-stage company advancing programs in the field of gene editing, to a company with a diverse portfolio of product candidates across a broad range of disease areas including hemoglobinopathies, oncology, regenerative medicine, cardiovascular and rare diseases. The Nobel Prize-winning CRISPR science has revolutionized biomedical research and represents a powerful, clinically validated approach with the potential to create a new class of potentially transformative medicines. To accelerate and expand its efforts, CRISPR Therapeutics has established strategic partnerships with leading companies including Bayer and Vertex Pharmaceuticals. CRISPR Therapeutics AG is headquartered in Zug, Switzerland, with its wholly-owned U.S. subsidiary, CRISPR Therapeutics, Inc., and R&D operations based in Boston, Massachusetts and San Francisco, California, and business offices in London, United Kingdom. To learn more, visit http://www.crisprtx.com.
Investor Contact: Susan Kim +1-617-307-7503 susan.kim@crisprtx.com
Media Contact: Rachel Eides +1-617-315-4493 rachel.eides@crisprtx.com
What Is CRISPR Gene Editing and How Does It Work?
In 2013, two biochemists published a paper proclaiming theyd discovered a potentially game-changing method of manipulating genes. CRISPR which sounds like a veggie-forward gastro pub won them each a Nobel Prize.
In the years since, CRISPR (or Clustered Regularly Interspaced Short Palindromic Repeats) has lived up to the hype. Its altered the global scientific landscape and raised questions about what kinds of revolutionary changes scientists and healthcare providers could and should pursue.
What if we could make foods allergy-free and crops drought-resistant? What if we could eliminate invasive species and protect against infectious diseases like malaria? What if we could revive extinct species? What if we could remove or repair mutations that cause inherited conditions? Or create custom immunotherapies to treat an individuals cancer?
The prospects are that exciting.
If your understanding of genetics starts and ends with high school biology or the (very fictional) Jurassic Park movies youre not alone. This stuff is complicated. Thats why we asked genomics and immunotherapy expert Timothy Chan, MD, PhD, to break CRISPR down for us, so we can better understand why, over a decade later, its still got researchers so excited.
Before we jump into CRISPR, lets start with the concept of gene editing.
Gene editing is the process of altering genetic material (DNA). That could mean changing a few individual genes or an entire sequence. Research has been ongoing for more than a decade thats looking at using gene editing on mutations that cause serious health conditions in people. The goal of this gene editing research is to eliminate or correct the mutation thats causing the health condition, or has the potential to cause one, such as certain cancers. In other research studies, gene editing is being explored so a mutation isnt passed down to children at birth.
For example, the U.S. Food and Drug Administration (FDA) approved a gene therapy in late 2022 that introduces a gene needed for blood clotting into people with hemophilia B. Its one of several cellular and gene therapy products currently in use today.
There are many different techniques and applications for gene editing. CRISPR is one approach to gene editing thats showing promise in ongoing clinical trials.
Now that were clear on what gene editing is, lets focus on a specific approach: CRISPR.
Clustered Regularly Interspaced Short Palindromic Repeats, otherwise known as CRISPR, was originally identified in bacteria, as a bacterial defense system, says Dr. Chan.
Thats right. Bacteria have immune systems, too.
CRISPR contains spacers sequences of DNA left over from unfriendly viruses or other entities as well as repeating sections of genetic material. Those sequences provide acquired immunity, and form the building blocks of the gene editing system or process. It creates a sort of blueprint that allows enzymes in genetic material to make changes to sequences of DNA in living cells. One of the best-known enzymes used for this purpose is called Cas9, which is why youll sometimes hear people talk about CRISPR-Cas9.
Over the years, people have discovered that specific enzymes that allow CRISPR to work Cas9 is one of them.But there are other ones, and they can be tailored to target sequences of interest in the DNA for specific cuts to be made, Dr. Chan explains.
You can think of the underlying mechanism of CRISPR gene editing as being similar to the way magnetic shapes are drawn to each other or the way Lego blocks fit together.
The segments in CRISPR are transcribed into RNA. This RNA includes a guide sequence, which is a match to existing DNA in a persons body.
That guide sequence can be tailored to whatever you want, Dr. Chan says. And as a result, you can make specific alterations or mutations in a part of the genome that you are targeting with a high degree of accuracy.
Along for the ride with this guide sequence is an enzyme like Cas9.
When the guide sequence and enzyme find the desired DNA to edit, the enzyme can then get down to business. It attaches itself to this DNA and makes changes, whether thats a cut or alteration.
CRISPR technology has come a long way, Dr. Chan says. The first generation of CRISPR was a great way to inactivate genes. It only made a break in genes. Then, the DNA would get filled up with natural repair enzymes.
But new versions of CRISPR like CRISPR prime or CRISPR HD are more advanced.
These can allow actual replacements to occur, Dr. Chan continues. You can even very accurately replace one sequence one of the letters in the genome with another letter. And you can make specific mutations.
CRISPRs ability to make very specific, very small cuts has the potential to transform how healthcare providers can address certain genetic diseases.
Dr. Chan is optimistic about the future of CRISPR based on the success of ongoing clinical trials in human subjects. For any type of genetic diseases caused by a single mutated gene, you can use CRISPR to mutate it and make it normal. Thats why its useful. Its a way for us to change errors in the genome.
Right now, CRISPR is geared toward correcting a single change in genes, he adds. While combinations may be possible in the future, were just not there yet.
While gene editing is already in use, CRISPR is still in the clinical trials phase, Dr. Chan says. Its used all the time in research laboratories and industries, he notes. Many clinical trials are testing CRISPR in the setting of genetic diseases and cancer.
Interestingly, CRISPR can be used to detect certain diseases. The best-known example is the Sherlock CRISPR SARS-CoV-2 Kit: A COVID-19 test that received emergency use authorization (EAU) from the FDA in 2020.
But theres no FDA-approved CRISPR therapy right now. The clinical trials are ongoing, he says.
These include trials looking at CRISPR to correct genetic diseases such as cystic fibrosis, Huntingtons disease and muscular dystrophy.
Dr. Chan adds that there are also major clinical trials in process for blood disorders, where CRISPR is being used to correct the gene alteration that causes the condition. As one example, he cites a promising trial looking at CRISPR-Cas9 gene editing for sickle cell disease and -thalassemia, written about in an early 2021 issue of the New England Journal of Medicine. -thalassemia is an inherited blood disorder that impacts the bodys ability to create hemoglobin an iron-dense protein that serves as the primary ingredient in red blood cells.
There are also clinical trials looking to see if CRISPR can be used to treat certain cancers. Dr. Chan notes that chimeric antigen receptor (CAR)T-cell therapy is one of the first gene therapies approved for leukemias. Current research is looking at whether CRISPR technology can make this treatment even more effective.
In CAR T-cell therapy, you take out T-cells from someone and put in a receptor a new way for these cells to target something on cancer cells and then put these cells back in the patient, he explains. Researchers are running trials now where they use CRISPR to alter those T-cells to make them even more active.
CRISPR therapies can take on many different forms. CRISPR has been inserted directly into the body before. It was famously injected into the eyes of seven people with a rare hereditary blindness disorder in 2020, two of whom later told NPR that they regained some ability to see colors. There are human trials in process right now that deliver CRISPR through gels and creams, through food or drink, skin grafts or injections. Ex-vivo delivery is also common: Thats when CRISPR is used to modify a cell outside the body. The cells are then re-inserted into the body using a harmless virus.
The results have been promising so far. I do believe in the next three to five years possibly even sooner were going to see approval to treat some diseases, Dr. Chan states.
With any type of CRISPR therapy, Dr. Chan says theres a risk of getting off-target effects or unexpected side effects.
Whenever youre altering something as fundamental as DNA, you just dont know what might happen he explains. Theres always a chance for the unexpected. You can potentially have effects on your DNA that were not intended.
At the moment, he doesnt have any specific examples of what these effects might be and he notes that existing research suggests the risk is pretty low. Still, data from future research might tell a different story.
Dr. Chan nevertheless sees a lot of potential for CRISPR in the coming years.
The field is moving very quickly, he says. Were seeing continual improvement of the actual CRISPR tools being used.
Its getting more accurate and more flexible in terms of what you can do. There are various engineered modified variants of CRISPR now that are allowing very specific, very accurate changes with fewer off-target effects. So, I think the future is very bright.
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What Is CRISPR Gene Editing and How Does It Work?