
Decoding Sensory Axonal Neuropathy: Genetic Testing Unlocks the Mystery
Discover the importance of genetic testing in diagnosing and treating Sensory Axonal Neuropathy. Learn how it identifies mutations, guides personalized treatment, and aids in…

MD · MBA
Physician specializing in genetic analysis and personalized preventive medicine, and author of Outsmart Your Genes.
Brandon Colby is a physician-expert in the fields of genetic analysis and Personalized Preventive Medicine. He holds an MD from the Mount Sinai School of Medicine, an MBA from Stanford University's Graduate School of Business, and a degree in Genetics from the University of Michigan.
Dr. Colby is the author of the book Outsmart Your Genes and has developed numerous technologies that improve the analysis, interpretation, and actionability of genome sequencing data. He is an Affiliate Specialist of the American College of Medical Genetics and Genomics (ACMG), an Associate of the American College of Preventive Medicine (ACPM), and a member of the National Society of Genetic Counselors (NSGC).
Articles by Brandon Colby, MD are reviewed for accuracy by Sequencing's medical and scientific team. This page is for informational purposes and does not constitute medical advice.

Discover the importance of genetic testing in diagnosing and treating Sensory Axonal Neuropathy. Learn how it identifies mutations, guides personalized treatment, and aids in…

Delays across two or more areas of development have been traced to GNB1 and GABRG1 variants and to chromosomal abnormalities, which shape the therapies offered.

Lactic acid builds up when mitochondria cannot make energy; LHON, MLASA, BOLA3 and NDUFV1 variants are among the genetic causes sequencing can tell apart.

Spherical red cells break apart early and cause hemolytic anemia; a CBC, reticulocyte count and osmotic fragility testing support the type 3 diagnosis.

LDL-C does not fall as expected in everyone taking a statin; adherence, drug interactions and genetic variants are weighed, along with ezetimibe and PCSK9 inhibitors.

NDUFAF5, NDUFAF6, Adar and NUBPL changes are linked to this childhood disorder, in which striatal degeneration brings progressive dystonia and cognitive decline.

Abnormal neuron layers beneath the cortex cause seizures and developmental delay; MRI and DCX gene analysis confirm X-SCLH, an X-linked dominant disorder.

Drug-triggered reactions such as SJS, TEN and DRESS have been tied to HLA-B*15:02, HLA-A*31:01 and CYP2C9, so genotyping can steer prescribing away from risky medicines.