Friedreich’s ataxia (FA), the most common form of hereditary ataxia, is an autosomal recessive neurodegenerative disorder affecting multiple organ systems, and causing cardiomyopathy, scoliosis, muscle weakness, speech impairment and other systemic issues.

Scientists at Ghent University have created a mouse model that incorporates human versions of the receptors that recognize the fragment crystallizable region of immunoglobulin G, one of the most abundant antibodies in the blood and a key mediator of essential immune functions such as cellular activation, pathogen elimination and the regulation of inflammatory responses.

Scientists at Ghent University have created a mouse model that incorporates human versions of the receptors that recognize the fragment crystallizable (Fc) region of immunoglobulin G (IgG), one of the most abundant antibodies in the blood and a key mediator of essential immune functions such as cellular activation, pathogen elimination and the regulation of inflammatory responses. These human Fcγ receptors allow the humanized mouse to more accurately reproduce IgG-driven biology, enabling more reliable and safer preclinical assays before evaluating monoclonal antibodies in clinical trials with people.

On Dec. 2, 2025, the FDA released draft guidance that could reduce the use of nonhuman primates (NHPs) in preclinical testing of monoclonal antibodies. According to the guidance, which the FDA released for the purpose of soliciting comments, “In general, studies longer than 3 months in nonrodent species (e.g., NHPs, dogs, and mini-pigs) are not warranted to evaluate toxicities … when data from 3-month studies are supplemented with a weight-of-evidence (WoE) risk assessment.”

The U.K. government has published a road map for phasing out animal testing in life sciences research and announced £75 million (US$98.6 million) for work to develop nonanimal models, leaving scientists concerned because they say, in many cases, there can never be meaningful alternatives to using live animals.

The U.K. government has published a road map for phasing out animal testing in life sciences research and announced £75 million (US$98.6 million) for work to develop nonanimal models, leaving scientists concerned because they say, in many cases, there can never be meaningful alternatives to using live animals.

“The impoverished laboratory environment in which mice and rats are maintained has been very good at increasing experimental replicability,” Steven Austad told the audience at the 12th Aging Research & Drug Discovery Meeting (ARDD) in Copenhagen last week. “But at the cost of sacrificing translational relevance.”

Acute respiratory distress syndrome (ARDS) is a life-threatening pulmonary condition marked by intense inflammation, alveolar damage and fluid accumulation in the lungs, often leading to respiratory failure. In a study recently published in Translational Research, researchers aimed to develop a more physiologically relevant model by combining two major ARDS contributors: gastric acid aspiration and ventilator-induced lung injury.