A Rare Genetic Syndrome and Type 1 Diabetes: What One Case Tells Us

Sanjad-Sakati syndrome (SSS) is an extremely rare genetic disorder inherited in an autosomal recessive pattern—meaning a person must inherit a faulty gene from both parents to develop the condition. The syndrome is caused by variants in the TBCE gene, which plays a role in protein regulation in cells.

People with SSS typically experience low calcium levels at birth or in infancy, severe growth delays, developmental delays, and distinctive facial features. The condition affects multiple body systems and requires lifelong medical monitoring.

Researchers in Saudi Arabia documented the case of a nine-year-old boy with genetically confirmed SSS who developed an unusual combination of autoimmune conditions. At three weeks old, he suffered seizures caused by dangerously low calcium levels—a hallmark of SSS.

By age three, the boy developed Type 1 diabetes. Blood tests showed the classic markers: anti-islet cell antibodies and anti-GAD-65 antibodies, both signs that his immune system was attacking the insulin-producing cells in his pancreas. He required insulin treatment from that point forward.

At age four, he developed Graves' disease, an autoimmune thyroid condition. Tests confirmed he had thyroid antibodies and an overactive thyroid gland. Eventually his thyroid function reversed, and he developed hypothyroidism (underactive thyroid), requiring hormone replacement therapy.

The coexistence of SSS, Type 1 diabetes, and Graves' disease in one child is uncommon enough to warrant attention. The case report authors noted that this clustering of autoimmune conditions raises questions about whether the TBCE gene mutation might somehow affect how the immune system works, though they emphasize that a single case cannot prove this connection.

Type 1 diabetes and Graves' disease are both autoimmune conditions, meaning the body's defense system mistakenly attacks its own tissues. Whether SSS increases a person's vulnerability to autoimmune disease remains unknown and requires further study.

Because this case is unusual, the authors suggest that patients diagnosed with SSS may benefit from regular monitoring of their endocrine system—the network of glands that produce hormones. This would include checking thyroid function and watching for signs of diabetes or other autoimmune conditions.

This recommendation is based on one case and should not be interpreted as a confirmed risk. However, it highlights the importance of comprehensive care for patients with rare genetic disorders, where connections between different body systems are not always obvious.

Source: Frontiers in endocrinology. Evidence type: PubMed indexed literature. Type1Cure is an information and intelligence hub, not a medical advice service. This article summarizes published research and does not provide diagnosis, treatment, or personal medical guidance. Always talk to your own care team before changing anything about your Type 1 diabetes management.