Completion of Enrollment in Cohorts C and G of China Phase II Clinical Study of Osemitamab (TST001) in Combination with CAPOX with or without Nivolumab as First-line Treatment of Gastric/Gastro-esophageal Junction Cancer Patients

On May 2, 2023 Transcenta Holding Limited ("Transcenta") (HKEX: 06628), a clinical stage biopharmaceutical company with fully-integrated capabilities in discovery, research, development and manufacturing of antibody-based therapeutics, reported that the enrollment of first-line (1L) CLDN18.2 expressing Gastric / Gastro-esophageal Junction (G/GEJ) adenocarcinoma patients in cohorts C and G for the China Phase II study (Transtar-102, NCT04495296) of its high affinity humanized ADCC-enhanced anti-CLDN18.2 monoclonal antibody Osemitamab (TST001) has been completed (Press release, Transcenta, MAY 2, 2023, View Source [SID1234630866]). Cohort G evaluates Osemitamab (TST001) in combination with Nivolumab plus Capecitabine and Oxaliplatin (CAPOX). Cohort C explores Osemitamab (TST001) in combination with CAPOX. Studies are ongoing in the U.S.

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Transtar-102 (NCT04495296) is an ongoing Phase I/II, open-label, multi-cohort, multi-center clinical study in China to evaluate the safety, tolerability and efficacy of Osemitamab (TST001) as single agent or in combination in several different indications. Cohort G evaluates Osemitamab (TST001) at the dose of 3 or 6 mg/kg Q3W in combination with Nivolumab plus CAPOX in 1L non-resectable locally advanced or metastatic G/GEJ adenocarcinoma with various level of CLDN18.2 expression: a total of 82 patients have been enrolled. Preliminary data show the absence of unexpected safety findings; efficacy is immature. Full results from this cohort will be reported in future medical conferences.

Cohort C evaluates Osemitamab (TST001) in combination with CAPOX as 1L treatment of non-resectable locally advanced and metastatic G/GEJ cancer. Enrollment was completed by the end of 2022 and updated efficacy data including duration of response and median progression free survival will be presented in upcoming medical conferences.

These cohorts support the upcoming global Phase III pivotal trial to be initiated in the second half of 2023.

At ESMO (Free ESMO Whitepaper) 2022, Transcenta released encouraging interim safety and efficacy data for cohort C including anti-tumor activities in medium and low CLDN18.2 expressing G/GEJ tumors. Osemitamab (TST001) is designed to have higher affinity to bind CLDN18.2 on the tumor cells and enhanced NK cell mediated ADCC activity via fucose reduction. In preclinical models, Osemitamab (TST001) elicits potent in vitro and in vivo anti-tumor activities in CLDN18.2 low expressing gastric cancer tumors.

Gastric cancer (GC) remains the 4th leading cause of cancer death worldwide, accounting for about 7.7% of all cancer related mortality. Combinations of platinum and fluoropyrimidine are the preferred 1L chemotherapy regimen for patients with HER2 negative advanced gastric cancer. Nivolumab was approved in combination with chemotherapy for 1L treatment of patients with advanced or metastatic gastric cancer. Preclinical studies have demonstrated synergistic anti-tumor activities between Osemitamab (TST001) and PD-1 antibody in CLDN18.2 expressing tumor models. Osemitamab (TST001)in combination with Nivolumab plus chemotherapy could become a transformative treatment option for patients with gastric cancer.

"The completion of enrollment of these cohorts marks an important milestone for Transcenta. These clinical data lay the foundation of our Phase III and comply with dose optimization requirements from Health Authorities. They also provide important information related to the predictive role of CLDN18.2 expression on Osemitamab (TST001) associated outcomes, particularly in the medium and low expressors. We look forward to releasing these data in the very near future." said Dr. Caroline Germa, Transcenta’s Executive Vice President, Global Medicine Development and Chief Medical Officer.

About Osemitamab (TST001)

Osemitamab (TST001) is a high affinity humanized anti- CLDN18.2 monoclonal antibody with enhanced antibody-dependent cellular cytotoxicity ("ADCC") and complement-dependent cytotoxicity ("CDC") activities and potent anti-tumor activities in tumor xenograft models. Osemitamab (TST001) is the second most advanced CLDN18.2 targeting antibody being developed globally. Osemitamab (TST001) is generated using Transcenta’s Immune Tolerance Breaking Technology (IMTB) platform. Osemitamab (TST001) kills CLDN18.2 expressing tumor cells by mechanisms of ADCC and CDC. Leveraging advanced bioprocessing technology, the fucose content of Osemitamab (TST001) was significantly reduced during the production, which further enhanced NK cells mediated ADCC activity of Osemitamab (TST001). Clinical trials for Osemitamab (TST001) are ongoing in the U.S. and China (NCT05190575, NCT04396821, NCT04495296, NCT05608785 / CTR20201281). Osemitamab (TST001) was granted Orphan Drug Designation in the U.S. by FDA for the treatment of patients with gastric or gastroesophageal junction (G/GEJ) and pancreatic cancer.

Candel Therapeutics Announces Upcoming Presentations at ASGCT and ASCO

On May 2, 2023 Candel Therapeutics, Inc. (Nasdaq: CADL), a clinical stage biopharmaceutical company focused on developing and commercializing viral immunotherapies to help patients fight cancer, reported an abstract detailing new data from its phase 1 clinical trial of CAN-3110 in patients with recurrent high-grade glioma was accepted as an oral presentation in the upcoming American Society of Gene and Cell Therapy (ASGCT) (Free ASGCT Whitepaper) 26th Annual Meeting in Los Angeles, CA and virtually, May 16-20, 2023 (Press release, Candel Therapeutics, MAY 2, 2023, View Source [SID1234630864]). Additionally, the Company will present a trials-in-progress poster from its phase 2 clinical trial of CAN-2409 plus valacyclovir and anti-PD1 antibodies in patients with stage III/IV non-small cell lung cancer (NSCLC) at the 2023 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) 27th Annual Meeting in Chicago, IL and virtually, June 2-6, 2023.

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Details are as follows:

ASGCT 26th Annual Meeting

Oral Presentation Title: Safety and Survival Outcomes in Recurrent High-Grade Glioma Patients Treated with CAN-3110, a First-in-Class ICP34.5 Expressing Oncolytic HSV1
Presenter: Francesca Barone, MD, PhD, Chief Scientific Officer, Candel Therapeutics
Session Title: Late-Breaking Abstracts 1
Session Date/Time: Friday, May 19, 2023, 8:00 am – 9:45 am PT
Location: Room 515 AB, Los Angeles Convention Center, Los Angeles, CA
ASCO 27th Annual Meeting

Trials-in-Progress Poster Presentation Title: CAN-2409 Plus Prodrug with Standard of Care Immune Checkpoint Inhibitor for Patients with Stage III/IV NSCLC
Presenter: Charu Aggarwal, MD, MPH, Associate Professor for Lung Cancer Excellence, Perelman School of Medicine, University of Pennsylvania
Session Title: Poster Session – Lung Cancer – Non-Small Cell Metastatic
Session Date/Time: Sunday, June 4, 2023, 8:00 am – 11:00 am CT
Location: Hall A, McCormick Place Convention Center, Chicago, IL
Details from the presentations will be available following the events on the Candel website at View Source

Sarepta Therapeutics Announces First Quarter 2023 Financial Results and Recent Corporate Developments

On May 2, 2023 Sarepta Therapeutics, Inc. (NASDAQ:SRPT), the leader in precision genetic medicine for rare diseases, reported financial results for the first quarter 2023 (Press release, Sarepta Therapeutics, MAY 2, 2023, View Source [SID1234630863]).

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"We are pleased to report another strong quarter of performance serving the Duchenne community. With EXONDYS 51, VYONDYS 53, and AMONDYS 45, we once again exceeded analyst estimates, with total revenue for the quarter reaching $253.5 million and net product revenue standing at $231.5 million and growing at 23% versus the same quarter of prior year. The Sarepta team has consistently performed and served the patient community over the last 6 years and it will be this team, with its track record of success, that will launch and serve the community in the United States with SRP-9001 if our BLA is approved," said Doug Ingram, president and chief executive officer, Sarepta. "We look forward to sharing the totality of evidence supporting the safety and efficacy of SRP-9001 at the upcoming advisory committee meeting on May 12 and at the same time continuing to prepare for the launch of SRP-9001 in the United States."

First Quarter 2023 and Recent Developments:

FDA advisory committee meeting for SRP-9001 to be held on May 12, 2023: In March, the Company announced that at its late cycle meeting for the SRP-9001 (delandistrogene moxeparvovec) biologics license application (BLA), the U.S. Food and Drug Administration’s Office of Therapeutic Products determined that an advisory committee meeting will be held for SRP-9001 in advance of the May 29, 2023 regulatory action date. In April, Sarepta announced May 12, 2023 as the date of the U.S. Food and Drug Administration’s Cellular, Tissue and Gene Therapies Advisory Committee meeting for the SRP-9001 BLA. The advisory committee meeting will be hosted as a virtual meeting. SRP-9001 is Sarepta’s investigational gene therapy for the treatment of Duchenne muscular dystrophy.
SRP-5051-201 MOMENTUM Part B clinical trial fully enrolled: Sarepta has completed enrollment for Part B of the MOMENTUM clinical trial investigating the use of SRP-5051, the Company’s next-generation peptide-conjugated phosphorodiamidate morpholino oligomer (PPMO), to treat patients with Duchenne muscular dystrophy who are amenable to exon 51 skipping. Data from Part B is expected in the second half of this year. If successful, Sarepta anticipates Part B to serve as the pivotal study for SRP-5051 and plans to seek accelerated approval for the candidate.
On track to complete enrollment in 2H23 for VOYAGENE clinical trial: VOYAGENE, or Study SRP-9003-201, is Sarepta’s phase 1 study of SRP-9003 (bidridistrogene xeboparvovec) for the treatment of limb-girdle muscular dystrophy Type 2E (LGMD2E). It is a U.S.-only study enrolling ambulant patients aged 18 years or older and non-ambulant patients aged 4 to 50 years old, using clinical process SRP-9003 material. The Company has already seen positive expression and functional data in their first clinical trial, SRP-9003-101, and is conducting VOYAGENE to gain insights into a broader patient population. Sarepta expects to complete enrollment for VOYAGENE in the second half of 2023 and to begin their phase 3 study using commercially representative process material by the end of this year.
Conference Call
The event will be webcast live under the investor relations section of Sarepta’s website at View Source and following the event a replay will be archived there for one year. Interested parties participating by phone will need to register using this online form. After registering for dial-in details, all phone participants will receive an auto-generated e-mail containing a link to the dial-in number along with a personal PIN number to use to access the event by phone.

Financial Results
On a GAAP basis, for the three months ended March 31, 2023, the Company reported a net loss of $516.8 million, or $5.86 per basic and diluted share, compared to a net loss of $105.0 million reported for the same period of 2022, or $1.20 per basic and diluted share. This change is primarily due to the loss on debt extinguishment of $387.3 million incurred in the three months ended March 31, 2023, with no similar activity for the same period of 2022, as discussed in further detail below. On a non-GAAP basis, the net loss for the three months ended March 31, 2023 was $85.5 million, or $0.97 per basic and diluted share, compared to a net loss of $48.6 million, or $0.56 per basic and diluted share for the same period of 2022.

Revenues
For the three months ended March 31, 2023, the Company recorded total revenues of $253.5 million, which consist of net product revenues and collaboration revenues, compared to total revenues of $210.8 million for the same period of 2022, an increase of $42.7 million.

For the three months ended March 31, 2023, the Company recorded net product revenues of $231.5 million, compared to net product revenues of $188.8 million for the same period of 2022, an increase of $42.7 million. The increase primarily reflects the continuing increase in demand for the Company’s products.

For both the three months ended March 31, 2023 and 2022, the Company recognized $22.0 million of collaboration revenue, which relates to the F. Hoffman-La Roche Ltd. (Roche) collaboration arrangement.

Cost and Expenses
Cost of sales (excluding amortization of in-licensed rights)
For the three months ended March 31, 2023, cost of sales (excluding amortization of in-licensed rights) was $35.0 million, compared to $31.4 million for the same period of 2022, an increase of $3.6 million. The increase primarily reflects increasing demand for the Company’s products as well as the write-offs of certain batches of the Company’s products not meeting the Company’s quality specifications for the three months ended March 31, 2023, with no similar activity for the same period of 2022, partially offset by a decrease in royalty payments during the three months ended March 31, 2023 due to changes in the BioMarin Pharmaceuticals, Inc. (BioMarin) royalty terms.

Research and development
Research and development expenses were $245.7 million for the three months ended March 31, 2023, compared to $194.3 million for the same period of 2022, an increase of $51.4 million. The increase in research and development expenses primarily reflects the following:

$15.6 million increase in manufacturing expenses primarily due to a continuing ramp-up of the Company’s SRP-9001 manufacturing;
$14.0 million increase in compensation and other personnel expenses primarily due to changes in headcount;
$10.5 million increase in clinical trial expenses primarily due to an increased patient enrollment and site activation for the Company’s MOMENTUM and MIS51ON programs;
$6.5 million increase in research and other expenses primarily driven by an increase in sponsored research with academic institutions during the three months ended March 31, 2023 and an increase in lab-related expenses primarily due to changes in headcount;
$3.3 million increase in stock-based compensation expense primarily due to changes in headcount and the value of stock awards;
$2.8 million increase in facility- and technology-related expenses primarily due to the Company’s continuing expansion efforts;
$2.7 million increase in professional service expenses primarily due to an increase in reliance on third-party research and development contractors as the Company prepares for a potential launch of SRP-9001;
$1.5 million decrease in pre-clinical expenses primarily due to a decrease in toxicology study activity across multiple gene therapy and RNA platforms; and
$2.5 million increase in the offset to expense associated with a collaboration reimbursement from Roche due to continuing development of the Company’s SRP-9001 gene therapy programs.
Non-GAAP research and development expenses were $220.7 million and $173.2 million for the three months ended March 31, 2023 and 2022, respectively, an increase of $47.5 million.

Selling, general and administrative
Selling, general and administrative expenses were $110.7 million for the three months ended March 31, 2023, compared to $71.8 million for the same period in 2022, an increase of $38.9 million. The increase in selling, general and administrative expenses primarily reflects the following:

$17.8 million increase in professional service expenses primarily due to an increase in reliance on third-party selling, general and administrative contractors as the Company prepares for a potential launch of SRP-9001;
$11.0 million increase in compensation and other personnel expenses primarily due to changes in headcount;
$8.7 million increase in stock-based compensation expense primarily due to the Chief Executive Officer grant modification agreement executed in 2022, as well as changes in headcount and the value of stock awards; and
$1.7 million increase in facility- and technology-related expenses primarily due to the Company’s continuing expansion efforts.
Non-GAAP selling, general and administrative expenses were $83.3 million and $53.2 million for the three months ended March 31, 2023 and 2022, respectively, an increase of $30.1 million.

Amortization of in-licensed rights
For both the three months ended March 31, 2023 and 2022, the Company recorded amortization of in-licensed rights of approximately $0.2 million. This is related to the amortization of the in-licensed right assets recognized as a result of agreements the Company entered into with BioMarin and the University of Western Australia in July 2017 and April 2013, respectively.

Loss on debt extinguishment
On November 14, 2017, the Company issued $570.0 million aggregate principal amount of senior convertible notes due on November 15, 2024 (2024 Notes). On March 2, 2023, the Company entered into separate, privately negotiated exchange agreements with certain holders of the outstanding 2024 Notes (Exchange Agreements). The Exchange Agreements resulted in an exchange of $313.5 million in aggregate principal value of the 2024 Notes for shares of the Company’s common stock (2024 Notes Exchange). In connection with the 2024 Notes Exchange, the Company issued approximately 4.5 million shares of its common stock representing an agreed upon contractual exchange rate pursuant to the terms of each Exchange Agreement. The exchange was not pursuant to the conversion privileges included in the terms of the debt at issuance and therefore was accounted for as a debt extinguishment. The Company accounted for the debt extinguishment by recognizing the difference between the fair value of the shares of common stock transferred on the exchange date and the net carrying amount of the extinguished debt as a loss on debt extinguishment. The loss incurred on the extinguishment was $387.3 million, inclusive of $6.9 million in third-party debt conversion costs.

Other income (expense), net
For the three months ended March 31, 2023 and 2022, other income, net was $12.7 million and other expense, net was $17.3 million, respectively. The changes are primarily due to a $10.0 million increase in accretion of investment discount, net and a $9.1 million increase in interest income due to the investment mix of the Company’s investment portfolio, as well as a $9.5 million reduction of interest expense incurred as a result of the repayment of the December 2019 Term Loan in 2022.

Income tax expense
Income tax expense for the three months ended March 31, 2023 and 2022 was approximately $4.0 million and $0.9 million, respectively. Income tax expense for all periods presented relates to state and foreign income taxes.

Cash, Cash Equivalents, Restricted Cash and Investments
The Company had approximately $1.9 billion in cash, cash equivalents, investments and long-term restricted cash as of March 31, 2023 compared to $2.0 billion as of December 31, 2022. This decrease is driven by cash used to fund the Company’s ongoing operations during 2023.

Use of Non-GAAP Measures
In addition to the GAAP financial measures set forth in this press release, the Company has included certain non-GAAP measurements. The non-GAAP loss is defined by the Company as GAAP net loss excluding interest (income) expense, net, income tax expense, depreciation and amortization expense, stock-based compensation expense and other items. Non-GAAP research and development expenses are defined by the Company as GAAP research and development expenses excluding depreciation and amortization expense, stock-based compensation expense and other items. Non-GAAP selling, general and administrative expenses are defined by the Company as GAAP selling, general and administrative expenses excluding depreciation and amortization expense, stock-based compensation expense and other items.

1. Interest, tax, depreciation and amortization
Interest (income) expense, net amounts can vary substantially from period to period due to changes in cash and debt balances and interest rates driven by market conditions outside of the Company’s operations. Tax amounts can vary substantially from period to period due to tax adjustments that are not directly related to underlying operating performance. Depreciation expense can vary substantially from period to period as the purchases of property and equipment may vary significantly from period to period and without any direct correlation to the Company’s operating performance. Amortization expense primarily associated with in-licensed rights as well as patent costs are amortized over a period of several years after acquisition or patent application or renewal and generally cannot be changed or influenced by management.

2. Stock-based compensation expenses
Stock-based compensation expenses represent non-cash charges related to equity awards granted by the Company. Although these are recurring charges to operations, the Company believes the measurement of these amounts can vary substantially from period to period and depend significantly on factors that are not a direct consequence of operating performance that is within the Company’s control. Therefore, the Company believes that excluding these charges facilitates comparisons of the Company’s operational performance in different periods.

3. Other items
The Company evaluates other items of expense and income on an individual basis. It takes into consideration quantitative and qualitative characteristics of each item, including (a) nature, (b) whether the items relate to the Company’s ongoing business operations, and (c) whether the Company expects the items to continue on a regular basis. These other items include loss on debt extinguishment and impairment of equity investments.

The Company excludes from its non-GAAP results the loss on debt extinguishment, which is considered to be a non-recurring event as it is associated with a distinct financing decision and is not indicative of the performance of the Company’s core operations, which accordingly would make it difficult to compare the Company’s results to peer companies that also provide non-GAAP disclosures.
The Company excludes from its non-GAAP results the impairment of any equity investments as it is a non-cash item and is not considered to be a normal operating expense due to the variability of amount and lack of predictability as to the occurrence and/or timing of such impairments.
The Company uses these non-GAAP measures as key performance measures for the purpose of evaluating operational performance and cash requirements internally. The Company also believes these non-GAAP measures increase comparability of period-to-period results and are useful to investors as they provide a similar basis for evaluating the Company’s performance as is applied by management. These non-GAAP measures are not intended to be considered in isolation or to replace the presentation of the Company’s financial results in accordance with GAAP. Use of the terms non-GAAP research and development expenses, non-GAAP selling, general and administrative expenses, non-GAAP other income and loss adjustments, non-GAAP income tax expense, non-GAAP net loss, and non-GAAP basic and diluted net loss per share may differ from similar measures reported by other companies, which may limit comparability, and are not based on any comprehensive set of accounting rules or principles. All relevant non-GAAP measures are reconciled from their respective GAAP measures in the attached table "Reconciliation of GAAP Financial Measures to Non-GAAP Financial Measures."

About EXONDYS 51
EXONDYS 51 (eteplirsen) uses Sarepta’s proprietary phosphorodiamidate morpholino oligomer (PMO) chemistry and exon-skipping technology to bind to exon 51 of dystrophin pre-mRNA, resulting in exclusion, or "skipping", of this exon during mRNA processing in patients with genetic mutations that are amenable to exon 51 skipping. Exon skipping is intended to allow for production of an internally truncated dystrophin protein.

EXONDYS 51 is indicated for the treatment of Duchenne muscular dystrophy in patients who have a confirmed mutation of the dystrophin gene that is amenable to exon 51 skipping.

This indication is approved under accelerated approval based on an increase in dystrophin production in skeletal muscle observed in some patients treated with EXONDYS 51. Continued approval may be contingent upon verification of a clinical benefit in confirmatory trials.

EXONDYS 51 has met the full statutory standards for safety and effectiveness and as such is not considered investigational or experimental.

Important Safety Information About EXONDYS 51
Hypersensitivity reactions, bronchospasm, chest pain, cough, tachycardia, and urticaria have occurred in patients who were treated with EXONDYS 51. If a hypersensitivity reaction occurs, institute appropriate medical treatment and consider slowing the infusion or interrupting the EXONDYS 51 therapy.

Adverse reactions in Duchenne patients (N=8) treated with EXONDYS 51 30 mg or 50 mg/kg/week by intravenous (IV) infusion with an incidence of at least 25% more than placebo (N=4) (Study 1, 24 weeks) were (EXONDYS 51, placebo): balance disorder (38%, 0%), vomiting (38%, 0%) and contact dermatitis (25%, 0%). The most common adverse reactions were balance disorder and vomiting. Because of the small numbers of patients, these represent crude frequencies that may not reflect the frequencies observed in practice. The 50 mg/kg once weekly dosing regimen of EXONDYS 51 is not recommended.

The most common adverse reactions from observational clinical studies (N=163) seen in greater than 10% of the study population were headache, cough, rash, and vomiting.

For further information, please see the full Prescribing Information.

About VYONDYS 53
VYONDYS 53 (golodirsen) uses Sarepta’s proprietary phosphorodiamidate morpholino oligomer (PMO) chemistry and exon-skipping technology to bind to exon 53 of dystrophin pre-mRNA, resulting in exclusion, or "skipping," of this exon during mRNA processing in patients with genetic mutations that are amenable to exon 53 skipping. Exon skipping is intended to allow for production of an internally truncated dystrophin protein.

VYONDYS 53 is indicated for the treatment of Duchenne muscular dystrophy in patients who have a confirmed mutation of the dystrophin gene that is amenable to exon 53 skipping.

This indication is approved under accelerated approval based on an increase in dystrophin production in skeletal muscle observed in patients treated with VYONDYS 53. Continued approval may be contingent upon verification of a clinical benefit in confirmatory trials.

VYONDYS 53 has met the full statutory standards for safety and effectiveness and as such is not considered investigational or experimental.

Important Safety Information for VYONDYS 53
Hypersensitivity reactions, including rash, pyrexia, pruritus, urticaria, dermatitis, and skin exfoliation have occurred in VYONDYS 53-treated patients, some requiring treatment. If a hypersensitivity reaction occurs, institute appropriate medical treatment and consider slowing the infusion or interrupting the VYONDYS 53 therapy.

Kidney toxicity was observed in animals who received golodirsen. Although kidney toxicity was not observed in the clinical studies with VYONDYS 53, the clinical experience with VYONDYS 53 is limited, and kidney toxicity, including potentially fatal glomerulonephritis, has been observed after administration of some antisense oligonucleotides. Kidney function should be monitored in patients taking VYONDYS 53. Because of the effect of reduced skeletal muscle mass on creatinine measurements, creatinine may not be a reliable measure of kidney function in Duchenne patients. Serum cystatin C, urine dipstick, and urine protein-to-creatinine ratio should be measured before starting VYONDYS 53. Consider also measuring glomerular filtration rate using an exogenous filtration marker before starting VYONDYS 53. During treatment, monitor urine dipstick every month, and serum cystatin C and urine protein-to-creatinine ratio every three months. Only urine expected to be free of excreted VYONDYS 53 should be used for monitoring of urine protein. Urine obtained on the day of VYONDYS 53 infusion prior to the infusion, or urine obtained at least 48 hours after the most recent infusion, may be used. Alternatively, use a laboratory test that does not use the reagent pyrogallol red, as this reagent has the potential to cross react with any VYONDYS 53 that is excreted in the urine and thus lead to a false positive result for urine protein.

If a persistent increase in serum cystatin C or proteinuria is detected, refer to a pediatric nephrologist for further evaluation.

Adverse reactions observed in at least 20% of treated patients and greater than placebo were (VYONDYS 53, placebo): headache (41%, 10%), pyrexia (41%, 14%), fall (29%, 19%), abdominal pain (27%, 10%), nasopharyngitis (27%, 14%), cough (27%, 19%), vomiting (27%, 19%), and nausea (20%, 10%).

Other adverse reactions that occurred at a frequency greater than 5% of VYONDYS 53-treated patients and at a greater frequency than placebo were: administration site pain, back pain, pain, diarrhea, dizziness, ligament sprain, contusion, influenza, oropharyngeal pain, rhinitis, skin abrasion, ear infection, seasonal allergy, tachycardia, catheter site related reaction, constipation, and fracture.

For further information, please see the full Prescribing Information.

About AMONDYS 45
AMONDYS 45 (casimersen) uses Sarepta’s proprietary phosphorodiamidate morpholino oligomer (PMO) chemistry and exon-skipping technology to bind to exon 45 of dystrophin pre-mRNA, resulting in exclusion, or "skipping," of this exon during mRNA processing in patients with genetic mutations that are amenable to exon 45 skipping. Exon skipping is intended to allow for production of an internally truncated dystrophin protein.

AMONDYS 45 is indicated for the treatment of Duchenne muscular dystrophy in patients who have a confirmed mutation of the dystrophin gene that is amenable to exon 45 skipping.

This indication is approved under accelerated approval based on an increase in dystrophin production in skeletal muscle observed in patients treated with AMONDYS 45. Continued approval may be contingent upon verification of a clinical benefit in confirmatory trials.

AMONDYS 45 has met the full statutory standards for safety and effectiveness and as such is not considered investigational or experimental.

Important Safety Information for AMONDYS 45
AMONDYS 45 is contraindicated in patients with known hypersensitivity to casimersen or to any of the inactive ingredients. Instances of hypersensitivity, including angioedema and anaphylaxis, have occurred in patients receiving AMONDYS 45. If a hypersensitivity reaction occurs, institute appropriate medical treatment, and consider slowing the infusion, interrupting, or discontinuing the AMONDYS 45 infusion and monitor until the condition resolves.

Kidney toxicity was observed in animals who received casimersen. Although kidney toxicity was not observed in the clinical studies with AMONDYS 45, kidney toxicity, including potentially fatal glomerulonephritis, has been observed after administration of some antisense oligonucleotides. Kidney function should be monitored in patients taking AMONDYS 45. Because of the effect of reduced skeletal muscle mass on creatinine measurements, creatinine may not be a reliable measure of kidney function in Duchenne patients. Serum cystatin C, urine dipstick, and urine protein-to-creatinine ratio should be measured before starting AMONDYS 45. Consider also measuring glomerular filtration rate using an exogenous filtration marker before starting AMONDYS 45. During treatment, monitor urine dipstick every month, and serum cystatin C and urine protein-to-creatinine ratio (UPCR) every three months. Only urine expected to be free of excreted AMONDYS 45 should be used for monitoring of urine protein. Urine obtained on the day of AMONDYS 45 infusion prior to the infusion, or urine obtained at least 48 hours after the most recent infusion, may be used. Alternatively, use a laboratory test that does not use the reagent pyrogallol red, as this reagent has the potential to cross react with any AMONDYS 45 that is excreted in the urine and thus lead to a false positive result for urine protein.

If a persistent increase in serum cystatin C or proteinuria is detected, refer to a pediatric nephrologist for further evaluation.

Adverse reactions observed in at least 20% of patients treated with AMONDYS 45 and at least 5% more frequently than in the placebo group were (AMONDYS 45, placebo): upper respiratory tract infections (65%, 55%), cough (33%, 26%), pyrexia (33%, 23%), headache (32%, 19%), arthralgia (21%, 10%), and oropharyngeal pain (21%, 7%).

Other adverse reactions that occurred in at least 10% of patients treated with AMONDYS 45 and at least 5% more frequently in the placebo group, were: ear pain, nausea, ear infection, post-traumatic pain, and dizziness and light-headedness.

For further information, please see the full Prescribing Information.

Poseida Therapeutics Announces Multiple Presentations at the American Society of Gene and Cell Therapy 26th Annual Meeting

On May 2, 2023 Poseida Therapeutics, Inc. (Nasdaq: PSTX), a clinical-stage cell and gene therapy company advancing a new class of treatments for patients with cancer and rare diseases, reported that six data presentations, including two oral presentations, highlighting the Company’s preclinical gene therapy programs and platforms will be presented at the American Society of Gene and Cell Therapy (ASGCT) (Free ASGCT Whitepaper) 26th Annual Meeting, being held at the Los Angeles Convention Center in Los Angeles and virtually on May 16-20, 2023 (Press release, Poseida Therapeutics, MAY 2, 2023, View Source [SID1234630862]).

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Early/Late Stage Pipeline Development - Target Scouting - Clinical Biomarkers - Indication Selection & Expansion - BD&L Contacts - Conference Reports - Combinatorial Drug Settings - Companion Diagnostics - Drug Repositioning - First-in-class Analysis - Competitive Analysis - Deals & Licensing

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Oral Presentations:

Title: Preclinical Proof-of-Concept: A Novel Hybrid Gene Therapy Approach to Treat Severe Early-Onset Ornithine Transcarbamylase Deficiency
Session Title: Metabolic, Storage, Endocrine, Liver and Gastrointestinal Diseases I
Presentation Time: Thursday, May 18, 2023, 2:30 – 2:45 PM PST
Location: Room 403 AB
Abstract Number: 127

Title: Cas-CLOVER Technology Enables Precise Gene Editing and Site-Specific Transgene Insertion in Mouse Liver
Session Title: Gene Targeting and Gene Correction: Liver
Presentation Time: Thursday, May 18, 2023 3:00 – 3:15 PM PST
Location: Room 515 AB
Abstract Number: 157

Poster Presentations:

Title: Demonstration of Human Factor VIII Expression and Activity Following Single and Repeat Dosing of a Non-Viral Integrating Gene Therapy
Session Title: Wednesday Poster Session
Session Date/Time: Wednesday, May 17, 2023, 12:00 PM PST
Location: West Hall A
Abstract & Poster Board Number: 638

Title: Development of a Novel Non-Viral Gene Therapy Platform
Session Title: Thursday Poster Session
Session Date/Time: Thursday, May 18, 2023, 12:00 PM PST
Location: West Hall A
Abstract & Poster Board Number: 945

Title: Editing of a γ-Globin (HBG1/HBG2) cis-Regulatory Element in Human Hematopoietic Stem and Progenitor Cells Using Cas-CLOVER Technology Reactivates Fetal Hemoglobin
Session Title: Thursday Poster Session
Session Date/Time: Thursday, May 18, 2023, 12:00 PM PST
Location: West Hall A
Abstract & Poster Board Number: 1212

Title: Development and Optimization of Novel Super piggyBac-Based Hybrid Gene Therapy Approach
Session Title: Friday Poster Session
Session Date/Time: Friday, May 19, 2023, 12:00 PM PST
Location: West Hall A
Abstract & Poster Board Number: 1318

Sangamo Therapeutics to Present Pre-clinical Data From Its Genomic Engineering Platform at the 26th Annual Meeting of the American Society of Gene & Cell Therapy (ASGCT)

On May 2, 2023 Sangamo Therapeutics, Inc. (Nasdaq: SGMO), a genomic medicine company, reported that the American Society of Gene & Cell Therapy (ASGCT) (Free ASGCT Whitepaper) has accepted 14 Sangamo abstracts for presentation at the 26th ASGCT (Free ASGCT Whitepaper) Annual Meeting being held May 16-20, 2023, in-person in Los Angeles, CA and in a virtual format (Press release, Sangamo Therapeutics, MAY 2, 2023, View Source [SID1234630861]). Presentations will focus on the progression of Sangamo’s pre-clinical programs, including data from the prioritized neurology programs Nav1.7 and Prion, innovations in the epigenetic regulation platform and advances in AAV capsid engineering for delivery.

Schedule your 30 min Free 1stOncology Demo!
Discover why more than 1,500 members use 1stOncology™ to excel in:

Early/Late Stage Pipeline Development - Target Scouting - Clinical Biomarkers - Indication Selection & Expansion - BD&L Contacts - Conference Reports - Combinatorial Drug Settings - Companion Diagnostics - Drug Repositioning - First-in-class Analysis - Competitive Analysis - Deals & Licensing

                  Schedule Your 30 min Free Demo!

"The data to be presented at ASGCT (Free ASGCT Whitepaper) reflect important advances in areas core to our strategy, including epigenetic regulation for neurological disorders and engineered AAV capsids to potentially address the issues of delivery," said Jason Fontenot, Ph.D., Chief Scientific Officer at Sangamo. "We are excited to share such a depth of pre-clinical data and look forward to presenting the innovation that continues to emerge from our research efforts, to potentially deliver transformative medicines to patients in need."

Data to be presented at the ASGCT (Free ASGCT Whitepaper) Annual Meeting include an oral presentation from Sangamo’s flagship neurology epigenetic regulation program Nav1.7 to treat chronic neuropathic pain. This presentation will showcase how Sangamo is using an optimized zinc finger epigenetic repressor to specifically target and seek to reduce Nav1.7 expression in dorsal root ganglions to inhibit pain sensation in diseases of chronic neuropathic pain. Beginning with Nav1.7-associated small fiber neuralgia, with an estimated prevalence of at least 43,000 patients in the US, future success in this indication could subsequently enable the broadened use of this therapy to other neuropathic pain indications, regardless of the cause of the pain.

Additional presentations at the ASGCT (Free ASGCT Whitepaper) Annual Meeting will showcase how Sangamo is advancing its proprietary zinc finger platform development efforts, including the use of zinc finger transcriptional regulators designed to reduce the expression of the Prion protein for the treatment of Creutzfeldt-Jakob disease. Sangamo will also present data from its proprietary AAV capsid discovery platform SIFTER, which enables the engineering of AAV capsids with the potential for highly improved central nervous system transduction efficiency, along with broader presentations showcasing Sangamo’s latest genomic engineering platform evolution.

ASGCT Annual Meeting Presentations and Invited Sessions

Epigenetic Regulation for the Central Nervous System

Zinc Finger Transcriptional Regulator Mediated Repression of SCN9A Gene as a Therapeutic Approach for Painful Peripheral Neuropathies
Abstract No. 32
Oral Presentation – May 17; 3:45-4:00 pm PT
Engineered Zinc Finger Transcriptional Regulators Specifically Reduce Prion Expression and Extend Survival in an Aggressive Prion Disease Model
Abstract No. 490
Poster Presentation – May 17; 5:30-7:00 pm PT
Cell-Type Specific Reduction of Prion Expression in Neurons and Astrocytes Using Engineered Zinc Finger Transcriptional Regulators
Abstract No. 1561
Poster Presentation – May 19; 5:30-7:00 pm PT
Intercellular Zinc Finger Protein Delivery for Cross-Corrective Epigenetic Regulation in the CNS
Abstract No. 1485
Poster Presentation – May 19; 5:30-7:00 pm PT
Gene Activation Mediated by Zinc Finger Transcriptional Regulators (ZF-TRs) as a Therapeutic Approach for CNS Disorders
Abstract No. 1057
Poster Presentation – May 18; 5:30-7:00 pm PT
Viral Engineering for the Central Nervous System

Fitness Maturation of Engineered AAV Capsids STAC-102 and STAC-103 Enhances Central Nervous System Transduction after CSF Administration in Cynomolgus Macaques
Abstract No. 1698
Poster Presentation – May 19; 5:30-7:00 pm PT
Evolution of Blood-Brain Barrier Penetrant AAV Capsids in Non-Human Primates Using a Multiplexed Transcription Dependent Capsid Engineering Platform
Abstract No. 1203
Poster Presentation – May 18; 5:30-7:00 pm PT
Process and Platform Development for Production and Purification of CNS-Tropic Engineered AAV Capsids
Abstract No. 1460
Poster Presentation – May 19; 5:30-7:00 pm PT
Strategic Formulation Development for AAV Delivered Gene Therapies – a Case Study
Abstract No. 1186
Poster Presentation – May 18; 5:30-7:00 pm PT
Genomic Engineering Platform Evolution

Engineered Zinc Finger Transcriptional Regulators Enable Robust and Reliable Epigenetic Regulation in the Mouse Brain
Abstract No. 682
Poster Presentation – May 17; 5:30-7:00 pm PT
Zinc Finger-Transcriptional Repressors Against Immune Checkpoint Molecules to Improve Anti-Tumor Activity of Gene-Modified T Cells
Abstract No. 1680
Poster Presentation – May 19; 5:30-7:00 pm PT
A Robust and Flexible Baculovirus-Insect Cell System for AAV Vector Production with Improved Yield, Capsid Ratios and Potency
Abstract No. 471
Poster Presentation – May 17; 5:30-7:00 pm PT
Assays to Support Clinical Programs

Overcoming the Effect of Previous Enzyme Replacement Therapy on the Detection of Anti-Transgene Protein Antibodies After Treatment with Gene Therapy
Abstract No. 727
Poster Presentation – May 17; 5:30-7:00 pm PT
Development of a Competitive Ligand-Binding Assay to Detect Neutralizing Antibodies Against Chimeric Antigen Receptor of Regulatory T Cells
Abstract No. 891
Poster Presentation – May 18; 5:30-7:00 pm PT
All abstracts for the ASGCT (Free ASGCT Whitepaper) Annual Meeting are available on ASGCT (Free ASGCT Whitepaper)’s website.