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

Classifying DDC Variants Will Help Interpret Genetic Test Results

Researchers classified variants of the DDC gene that causes AADC deficiency according to their disease-causing potential, a study reported, the first study to identify and characterize previously unknown DDC variants. “Given that genetic testing is a core diagnostic test for AADC deficiency, a comprehensive catalogue of the genetic variants…

Recent Review Confirms Most Common Signs of AADC Deficiency

A review of recent medical literature confirmed low muscle tone, developmental delays, and oculogyric crises — when the gaze becomes fixed upward due to spasms in the eye muscles — are all hallmark signs of aromatic l-amino acid decarboxylase (AADC) deficiency, with symptom onset occurring within 6 months of…

AADC Deficiency Misdiagnosed as Epilepsy: Case Study

Symptoms that mimicked epilepsy led to the misdiagnosis of a Chinese infant girl with aromatic l-amino acid decarboxylase (AADC) deficiency, a case study reported. The researchers noted the case emphasizes the difficulty distinguishing between epileptic episodes, or seizures, and oculogyric crisis — a common symptom of AADC…

RTW Charitable Foundation to Fund Therapy Pipeline for Rare Diseases

The RTW Charitable Foundation will offer grants up to $150,000 per year to develop therapeutics for ultra-rare diseases, including aromatic l-amino acid decarboxylase (AADC) deficiency. The foundation, which supports research that may not have strong commercial backing, provides capital, human resources, and logistical support to help scientists accelerate…