Quest Diagnostics Inc. expanded its Alzheimer’s disease (AD) portfolio with a blood-based biomarker test for phosphorylated tau 217 (pTau217). The test joins the company’s plasma tests for p-tau181, beta-amyloid 42/40 ratio and ApoE genetic risk as well as several cerebrospinal fluid tests for Alzheimer’s.

Brain Trust Bio Inc. (BTB) will soon begin phase I trials in Australia of its IT-Riluzole delivered to the brain via a continuous intrathecal drug delivery method in people with amyotrophic lateral sclerosis. The company’s concept is to take known drugs that work and make them better by delivering them exclusively to where patients need them most, BTB co-founder and CEO Chen Benkler told BioWorld.

Researchers from the U.K. reported seeking protection for a device and method that combines electromyography (EMG) and Raman spectroscopy to improve the diagnostic pathway for patients with neuromuscular disorders, and that may be used as a minimally invasive bedside test of muscle health.

In what represents its first patenting, Alva Health Inc. has been granted protection for a method for detecting stroke from falls using a combination of wearable motion sensors and artificial intelligence.

Laboratory Corp. of America Holdings introduced a glial fibrillary acidic protein blood-based test available commercially in the U.S. for the early detection of neurodegenerative diseases and brain injuries. The test, which the company said was the first of its kind, is designed to assess the presence and progression of Alzheimer’s disease, multiple sclerosis, glioblastoma and traumatic brain injury.

Finding an effective medication for patients with major depressive disorder is notoriously difficult, with 70% of patients failing to respond to the first drug prescribed and 30% not responding to the first four medications. Complicating matters, genetic mutations can increase psychotropic drug-related adverse events, including hospitalizations. A recent study indicates Myriad Genetics Inc.’s Genesight test can help minimize the risk of these negative events, with a reduction of nearly 40% in psychiatric-related hospitalizations and prescription of medications with significant gene-drug interactions.

After decades of trying and dozens of failed trials, amyloid targeting has paid off with the first disease-modifying agents reaching the market. But success does not mean slam dunk. Aduhelm (aducanumab, Biogen Inc.) was dogged by controversy throughout its brief tenure, and Biogen pulled the plug on it in early 2024. Leqembi (lecanemab, Biogen Inc.) has received full approval. In this second installment of a three-part series on Alzheimer’s, BioWorld looks at the nuanced view of amyloid’s role in the disease.

At a recent meeting on “Research priorities for preventing and treating Alzheimer’s disease and related dementias” (ADRD), convened by the National Academies, one consensus priority on ADRD research was that there needs to be more of it at every stage. Several speakers presented stark numbers on the relative volume of research in cancer and neurodegeneration. Research output, measured in peer-reviewed papers, for dementia is estimated to be around 10,000 papers annually, compared to 150,000 for cancer, while AD clinical trials are also few and far between compared to cancer trials. This final installment of BioWorld’s series on Alzheimer’s explores some of the reasons for this discrepancy along with the latest advances and ongoing efforts to accelerate research and drug development in the field.

Ironically, the first person to be diagnosed with what is now Alzheimer’s disease was missing its major risk factor. When she first began showing symptoms of dementia in 1901, Auguste Deter was not particularly old. Despite Deter’s case, aging is the largest risk factor for developing Alzheimer’s, by a large margin. But “geroscience has not been translated into drugs for Alzheimer’s disease,” Howard Fillit, Alzheimer’s Drug Discovery Foundation co-founder and chief scientific officer, told BioWorld. “We’re just starting to see that cross-fertilization now.”

Alzheimer’s disease (AD) is recognized worldwide for its debilitating symptoms of declining cognitive function and gradual memory loss. What remains less clear is exactly what causes the neurodegenerative disease, and how to treat it. “Alzheimer’s disease is characterized by two key pathologies – beta-amyloid plaques and tau neurofibrillary tangles.” Seung-Yong Yoon, CEO of Adel Inc., told BioWorld. “Adel is looking to develop a tau-targeting drug, considering tau has been more correlated with AD symptom progression, and the industry’s need for tau pipelines.”