Monoclonal antibodies show strong therapeutic potential against neurodegenerative diseases, but a major challenge is ensuring that they can arrive unharmed in the brain at sufficient concentrations. One way around this challenge is to vectorize the monoclonal antibody: encode it within a vector that can infect target cells in the brain and express the antibody in situ.

BDNF is the brain’s most abundant neurotrophic factor, playing a key role in neuronal survival and synaptic plasticity through the activation of the transcription factor CREB, which is essential for driving beneficial effects in neurons. CREB is downregulated in Parkinson’s disease, Huntington’s disease, frontotemporal dementia, Alzheimer’s disease and other neurodegenerative conditions.

At the ongoing European Society of Gene & Cell Therapy meeting in Rome, Aviadobio Ltd. presented preclinical data for a novel ATXN2-targeting miRNA-containing vector, AVB-205, developed based on previous research that has shown the potential of ATXN2 silencing as a promising therapeutic strategy for amyotrophic lateral sclerosis (ALS) and tau-negative frontotemporal dementia (FTD).

Aviadobio Ltd. has entered a potential $2.18 billion license and commercialization agreement for its frontotemporal dementia gene therapy, AVB-101, with Astellas Pharma Inc. Astellas is making a $20 million equity investment in London-based Aviadobio and will pay up to $30 million up front in advance of deciding whether or not to exercise the exclusive option to worldwide rights.

Researchers in the U.K. have succeeded in reverse engineering the defective cryptic splicing that drives amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD) to enable precisely targeted delivery of transgenes and therapeutic protein expression in diseased neurons. The technique is compatible with conventional adeno-associated viral vectors that are approved for gene therapy, and can readily be adapted for different transgenes. ALS, FTD and other neurogenerative diseases are underpinned by loss of function of the RNA-binding protein TDP-43 (transactive response DNA-binding protein 43), that normally functions as a key regulator of splicing, protecting the transcriptome from toxic cryptic exons.

Acurastem Inc. has secured $4 million in grant funding from the California Institute for Regenerative Medicine (CIRM) to facilitate the development of its UNC13A program toward clinical trials for amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD).

Many patients with amyotrophic lateral sclerosis (ALS) or frontotemporal dementia (FTD) harbor the (G4C2)n pathogenic repeat expansion in the C9orf72 gene, which leads to aggregating dipeptide proteins, mainly poly-glycine-alanine (poly-GA).

With its hands full developing QRL-101 and QRL-201, both in clinical trials for amyotrophic lateral sclerosis with plans to expand into other neurodegenerative diseases such as frontotemporal dementia, Quralis Corp. has decided to out-license its preclinical ALS and FTD drug, QRL-204.