Steve Bryson, PhD, science writer —

Steve holds a PhD in biochemistry from the Faculty of Medicine at the University of Toronto, Canada. As a medical scientist for 18 years, he worked in both academia and industry, where his research focused on the discovery of new vaccines and medicines to treat inflammatory disorders and infectious diseases. Steve is a published author in multiple peer-reviewed scientific journals and a patented inventor.

Articles by Steve Bryson

Hemoglobin Levels Predict Course of AAV-Related Kidney Disease

Intensive care stays are more likely if oxygen-carrying hemoglobin levels are low at hospital admission in adults with kidney disease caused by ANCA-associated vasculitis (AAV), an analysis of medical records found. Severe kidney injury was the primary reason for intensive care unit (ICU) admission in these patients and associated…

Higher Healthcare Costs in Year Before Diagnosis, Analysis Finds

In the year before being diagnosed with ANCA-associated vasculitis (AAV), Medicare beneficiaries had significantly higher use and costs of healthcare than those without AAV, an analysis found. According to researchers, earlier identification of AAV is necessary to provide patients with appropriate care and potentially reduce costs and healthcare use.

Amgen Acquires ChemoCentryx, AAV Therapy Tavneos

Amgen is the new owner of Tavneos (avacopan), an approved ANCA-associated vasculitis (AAV) therapy, following its successful $3.7 billion cash acquisition of ChemoCentryx. “ChemoCentryx enhances Amgen’s leading inflammation and nephrology portfolio and includes Tavneos (avacopan), a first-in-class treatment for severe active anti-neutrophil cytoplasmic autoantibody-associated vasculitis (ANCA-associated vasculitis), an…

Immune Macrophages Play Key Role in Kidney Inflammation in AAV

Immune macrophages or cells that carry the proteins CD163 and/or CD206 play a key role in kidney inflammation in people with ANCA-associated vasculitis (AAV), a study reported. Researchers found that these distinct macrophages contribute to the inflammatory process in different ways. Moreover, the team determined that both CD163 and…

Switzerland OK’s Tavneos as Add-on Therapy for GPA, MPA

Tavneos (avacopan) has been approved as an add-on therapy for adults in Switzerland with severe, active microscopic polyangiitis (MPA) or granulomatosis polyangiitis (GPA), the two main types of ANCA-associated vasculitis (AAV). Following the decision by the Swiss Agency for Therapeutic Products, Swissmedic, the launch of Tavneos is expected…

Increased Arterial Stiffness Seen in Patients in Long-term Remission

People with ANCA vasculitis (AAV) in long-term remission have increased arterial stiffness, a sign of cardiovascular disease, a study reports. The mechanisms underlying acute cardiovascular disease risk in AAV were associated with endothelin-1, a molecule that promotes blood vessel narrowing. In the placebo-controlled study, blocking endothelin-1 receptors was found…

Pro-inflammatory S100 Proteins Found to Play Role in AAV

Elevated levels of certain pro-inflammatory proteins were found in the bloodstream and urine of people with ANCA-associated vasculitis (AAV), and correlated with disease severity, a study shows. Findings suggest that two of these proteins — S100A8/A9 and S100A12 — from the S100 family of proteins, play a role in…

Eye, Ear Symptoms Common in AAV Patients With Rare Condition

Symptoms affecting the eyes and ears are significantly more common in adults with ANCA-associated vasculitis (AAV) who developed hypertrophic pachymeningitis (HP), a rare condition marked by brain inflammation, a study from Japan reported. Notably, sudden vision or hearing loss was found in AAV patients with HP, suggesting that eye…

AAV-caused Kidney Involvement Is Linked to Immune Monocyte Cells

Similar to neutrophils, immune monocyte cells play an essential role in kidney damage caused by ANCA-associated vasculitis (AAV), a study discovered. The pro-inflammatory function of monocytes was stimulated by the immune signaling protein CSF2, also called GM-CSF. Therapeutically targeting monocytes or CSF2 may be a potential new treatment strategy…