MedPath

Votoplam

Generic Name
Votoplam

PTC518 Shows Promise in Huntington's Disease: Phase 2 Trial Meets Primary Endpoint

• PTC Therapeutics' investigational drug PTC518 demonstrated statistically significant reductions in Huntingtin protein levels in Phase 2 PIVOT-HD study, with 23-39% decreases observed across different dosages over 12 months. • The oral small molecule splicing modifier showed dose-dependent clinical benefits in Stage 2 patients on key measures including the Composite Unified Huntington's Disease Rating Scale, with promising 24-month data also reported. • Based on these results, PTC Therapeutics plans to pursue an accelerated approval pathway with the FDA, potentially positioning PTC518 to become the first disease-modifying therapy for Huntington's disease.

IDEAYA Biosciences Reports Strong Pipeline Progress and $1.1B Cash Position for 2024

• IDEAYA Biosciences advances multiple oncology programs, with over 230 patients enrolled in potential registration-enabling trial for darovasertib in metastatic uveal melanoma, targeting key readouts by end of 2025. • Company strengthens its position with approximately $1.1 billion cash reserve as of December 2024, expected to fund operations into at least 2028. • Pipeline expansion includes progress on DLL3 TOP1i ADC IDE849 showing 73% response rate in early SCLC data, and advancement of three new candidates targeting solid tumors.

Huntington's Disease: Optimism Surrounds Potential Breakthroughs in 2025

• uniQure's gene therapy trial has shown promising results, with treated patients exhibiting a significant reduction in the rate of Huntington's disease progression. • The FDA has endorsed the use of neurofilament light (NfL) as a biomarker and composite UHDRS (cUHDRS) as a clinical endpoint, potentially accelerating drug approvals. • PTC Therapeutics anticipates full results from its huntingtin-lowering drug, votoplam, in early summer, with potential for conditional approval if results are strong. • Research is focusing on novel biomarkers, such as imaging markers for huntingtin protein and markers for CAG expansion, to enhance therapeutic development.

Spinogenix's SPG601 Shows Promise in Phase 2 Trial for Fragile X Syndrome

• Spinogenix's SPG601 demonstrated a significant reduction in high-frequency gamma band activity, an EEG abnormality associated with Fragile X syndrome (FXS). • The Phase 2 trial met its primary endpoint, suggesting SPG601's potential to improve brain activity related to learning and memory in FXS patients. • SPG601 has received Fast Track designation from the FDA, which could expedite its development and regulatory review for FXS treatment. • SPG601 targets large-conductance, calcium-activated potassium channels to correct synaptic dysfunctions, addressing core symptoms of FXS.

FDA Grants Priority Review to Vatiquinone for Friedreich's Ataxia Treatment

• The FDA has accepted PTC Therapeutics' NDA for vatiquinone, a potential treatment for Friedreich's ataxia (FA), granting it priority review. • Vatiquinone aims to address the unmet need for FA patients, particularly children, by targeting energetic and oxidative stress pathways. • The NDA is supported by data from the MOVE-FA study and long-term studies, showing slowed disease progression and a favorable safety profile. • The FDA's target action date for a decision on vatiquinone is set for August 19, 2025, marking a significant step toward potential approval.

Novartis and PTC Therapeutics Collaborate on Huntington's Disease Treatment with PTC518

• Novartis and PTC Therapeutics have entered into a collaboration for the development and commercialization of PTC518, a potential treatment for Huntington's disease. • PTC518 is an oral small molecule currently in Phase II trials, showing promising results in reducing mutant Huntingtin protein levels in patients. • Novartis will pay PTC $1 billion upfront, with potential milestone payments up to $1.9 billion, and will oversee development, manufacturing, and commercialization after Phase II. • The collaboration marks Novartis' return to Huntington's disease research after a previous setback, aiming to provide a disease-modifying therapy.

PTC Therapeutics Halts Utreloxastat Development After Phase 2 ALS Trial Failure

• PTC Therapeutics' Phase 2 CardinALS trial of utreloxastat in amyotrophic lateral sclerosis (ALS) failed to meet its primary endpoint of slowing disease progression. • The trial did not achieve statistical significance in reducing plasma neurofilament light chain (NfL), a biomarker of neuronal damage, or in secondary efficacy endpoints. • Despite the setback, analysts maintain a positive outlook on PTC, focusing on the potential of sepiapterin for phenylketonuria (PKU) and Huntington's disease program. • PTC Therapeutics sold its Rare Pediatric Disease Priority Review Voucher for $150 million following the FDA approval of Kebilidi for AADC deficiency.

Huntington's Disease Therapeutics: Promising Advances Amidst Setbacks

• Several companies are advancing potential Huntington's disease treatments, including Wave Life Sciences with WVE-003 and uniQure with AMT-130. • PTC Therapeutics' PTC518 received FDA Fast Track designation after demonstrating reduced mutant huntingtin protein levels in Phase 2 trials. • Prilenia Therapeutics' pridopidine is under EMA review, potentially offering the first treatment to impact Huntington's disease progression. • Despite recent trial failures, the Huntington's disease therapeutic field remains optimistic due to genetic-level targeting advancements.

Novartis and Apellis Advance C3G Therapies Towards FDA Submission

• Novartis' Fabhalta (iptacopan) demonstrated significant proteinuria reduction in the Phase III APPEAR-C3G trial, meeting its primary endpoint and supporting regulatory submissions. • Apellis' Empaveli (pegcetacoplan) showed a substantial reduction in proteinuria and C3c deposit clearance in the Phase III VALIANT trial, indicating early efficacy in C3G patients. • Nephrologists express a strong interest in new C3G therapies that can slow eGFR decline and reduce proteinuria, addressing the urgent need for innovative treatments. • Spherix data suggests treatment preferences may be influenced by administration route, with Fabhalta's oral administration potentially offering an advantage.

Huntington's Disease: Disease-Modifying Therapies on the Horizon After Decades of Setbacks

• Several Huntington's disease therapies are nearing regulatory approval, potentially becoming the first disease-modifying treatments for the condition. • Prilenia Therapeutics' pridopidine has an application accepted by the EMA, while Wave Life Sciences and uniQure are in discussions with regulators for accelerated approval pathways. • Wave Life Sciences' WVE-003 demonstrated a significant reduction in mutant HTT protein levels and slowed caudate atrophy in clinical trials. • uniQure's AMT-130 gene therapy showed significant slowing of disease progression and reduction in neurofilament light chain levels in clinical studies.

Huntington's Disease Research Sees Renewed Hope with Promising Trial Results

• A phase 1/2 gene therapy trial demonstrated an 80% slowing of disease progression in Huntington's disease (HD) patients, as measured by the composite Unified Huntington's Disease Rating Scale. • Wave Life Sciences' ASO, WVE-003, showed a statistically significant 46% reduction in mutant huntingtin protein, prompting plans for accelerated FDA approval. • Numerous companies are actively developing HD therapeutics, employing diverse approaches based on an expanding understanding of the disease, signaling a dynamic future for HD treatment. • Researchers are exploring innovative strategies like CRISPR-based genome editing and neural progenitor transplantation to counteract HD pathology, expanding therapeutic horizons.

Cell Therapy and Targeted Therapies Dominate Oncology Advances in Early 2025

• The FDA issued a CRL for Atara Biotherapeutics' tabelecleucel due to third-party manufacturing issues, not efficacy or safety data, delaying potential approval for EBV+ PTLD. • EsoBiotec dosed the first patient in a trial for ESO-T01, an in vivo BCMA-directed CAR-T therapy for multiple myeloma, aiming for lower costs and simplified administration. • Obecabtagene autoleucel (obe-cel) gained FDA approval for relapsed/refractory B-cell precursor ALL, offering a less toxic CD19-directed CAR T-cell therapy option. • Arlocabtagene autoleucel (arlo-cel) shows promise in heavily pretreated relapsed/refractory multiple myeloma, eliciting a 48% complete response rate in phase 1 studies.

PTC Therapeutics' PTC518 Receives FDA Fast Track Designation for Huntington's Disease

• The FDA has granted Fast Track designation to PTC Therapeutics' PTC518 for Huntington's disease, a condition with significant unmet medical needs. • PTC518, an oral small molecule, aims to reduce the production of mutated Huntingtin protein, which is a key factor in Huntington's disease progression. • Clinical data from the PIVOT-HD study showed a 43% reduction in mutant Huntingtin protein levels with PTC518, along with favorable clinical effects. • Fast Track designation will expedite the development and review process, potentially leading to earlier access for patients with Huntington's disease.
© Copyright 2025. All Rights Reserved by MedPath