
Cobblestone Lissencephaly: Genetic Testing Illuminates a Path Forward
Explore genetic testing for cobblestone lissencephaly, a neurological disorder. Gain insights on diagnosis, management, and family planning with tailored genetic guidance.

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.

Explore genetic testing for cobblestone lissencephaly, a neurological disorder. Gain insights on diagnosis, management, and family planning with tailored genetic guidance.

Rare inherited variants found in unexplained adenomatous polyposis and early-onset colorectal cancer can flag people who need earlier colonoscopy and tailored prevention.

Severe infantile hypertrophic cardiomyopathy, muscular hypotonia, developmental delay and raised serum lactate mark COXPD17, which gene testing can confirm.

Disturbed pre-mRNA splicing from a GTPBP3 mutation underlies COXPD19, where muscle weakness, developmental delay and neurological problems reflect low energy output.

Malformed cerebral cortex underlies CDCBM3, a rare disorder with developmental delays, seizures and intellectual disability; testing can identify the variants involved.

Within the group known as malformations of cortical development, CDCBM4 causes seizures and developmental delays, and TUBB gene variants have been linked to it.

Muscle weakness and hypotonia combine with brain malformations, seizures and intellectual disability here; LAMA2 variants correlate with how motor function progresses.

Ptosis, swallowing difficulty and breathing problems are common in CMS8. RAPSN variants differ between populations, so testing is what separates it from lookalikes.