Families Aid Discovery of a Sensory-Processing Disorder in Broken Gene in Children with Autism Traits

A concerned Texas mom finally has answers about the cause of her son’s sensory-processing problems, thanks to a special collaboration among her patient-advocacy group and the lab of Scripps Research Neuroscientist Gavin Rumbaugh, PhD.

Monica Weldon of Cypress, Texas, says her son Beckett, a 10-year-old fraternal twin, has never experienced pain the way his sister, or other children, do.

“His pain threshold was so high,” Weldon says.

While he had signs of autism, he had other symptoms that were not typical.

“He walked around with a broken finger for four days and we didn’t know it was broken.”

Beckett has a genetic mutation that results in deactivation of a gene called SYNGAP1, which is critical to healthy brain development. Rumbaugh’s research, published in the journal Nature Neuroscience, for the first time links disordered touch and pain processing to SYNGAP1 mutations. Rumbaugh and his co-authors note that children born with only one working copy of the gene are known to exhibit a wide range of symptoms, including autistic traits, epilepsy, and intellectual disability. Analysis of a patient registry that Weldon helped assemble, plus a series of experiments in an animal model of the condition, led to the discoveries.

“We knew SYNGAP1 was critically important for synapse plasticity,” a term for experience-driven changes in neural circuitry, says Rumbaugh, the study’s senior and corresponding author.  “What we found is in addition to that, it also seems to regulate how many connections are made in the brain’s primary somatosensory cortex, in how we process touch-related sensory information. That was a surprising finding.”

It was surprising, in part, because previous research showed that SYNGAP1 mutations cause hyper-sensitivity in the other senses. The processing of hearing and sight may be on overdrive, and yet the researchers found that touch awareness and pain sensation barely register in somatosensory circuits.

SYNGAP1 mutations are rare, but recent studies have estimated that tens of thousands of individuals globally may live with them, Rumbaugh says. Families learn of their child’s SYNGAP1 status only after pediatricians notice missed milestones and then order genetic tests, he adds.

Thanks to the internet and Bridge the Gap, families are finding each other and sharing such vital information. The new findings show how powerful these connections can become when families partner with scientists like those at Scripps Research, Weldon adds.

“This open communication is getting us closer to understanding what this gene really does and possibly developing precision medicine approaches for treating these kids.”

The next step in Rumbaugh’s research is to look at treating the symptoms from the genetic mutation.

Scripps Research Press Release can be found here.

Bridge the Gap – SYNGAP Education and Research Foundation is a non-profit organization whose mission is to serve, educate and fund research for families coping with the effects of SYNGAP1 mutations. The leading advocacy organization for research and funding for treatments for SYNGAP1. You can learn more about it here.


Monica Weldon

Monica Weldon

In November of 2012, Monica's twin son, Beckett, was the first to be diagnosed at Texas Children's Genetics Clinic with the gene mutation SYNGAP1 (6p21.3). When Beckett was 4 months old, she noticed he was not meeting the same milestones as his twin sister. Monica then began a journey to find answers to help her son. She started to blog about his progress and this led to building a community of parents and caregivers that are now a strong support group. She is the Founder and President/CEO of Bridge the Gap – SYNGAP Education and Research Foundation. It is her passion to help support these families by raising awareness and creating a strong foundation that will accelerate a path to better therapies. She retired in 2016 after 23 years in education teaching secondary science. Her new focus is on building the programs and mission of Bridge the Gap – SYNGAP Education and Research Foundation. She is the Primary Investigator on the SYNGAP1 (MRD5) Registry and Natural History Study. She is a life member of the Worldwide Association of Female Professionals and a member of the first class of 2017 Illumina Ambassadors established in the United States. In addition to leading the foundation, she is an author, public speaker, consultant on rare disease business strategies and advocates for rare disease legislation at both the federal and state levels. Several of her authored scientific publications include Nature Neuroscience, The Journal of Neurodevelopmental Disorders, and The Journal of Pediatrics. She has authored a book about her son Beckett’s diagnostic journey called “Slow Moving Stream - My Special Boy”. She is a graduate from East Texas Baptist University with a Bachelor's of Science in Biology/Psychology (1991) and Secondary Certification in Education (1995). She is the wife of Chris Weldon and has five beautiful children, Haleigh (26), Taylor, USMC (23), Sawyer (21), and the twins Beckett & Pyper (10). She was a Global Genes 2015 & 2016 RARE Champion in Advocacy Award nominee for her work in the rare disease community and Wego Health Awards Nominee for years 2015, 2017, 2018.

Share this post

Share on facebook
Share on google
Share on twitter
Share on linkedin
Share on pinterest
Share on print
Share on email
Close Menu