Six year old with autoimmune polyglandular syndrome: can genetics tell us the story?

Steven Ghanny1, Robert Wallerstein, Amy Chartoff

  • 1Molly Center for Children, Hackensack University Medical Center, Hackensack, NJ, USA. sghanny@hotmail.com

Insights

Children with type 1 diabetes (DMT1) face higher risks for autoimmune conditions like Addison's disease. Genetic screening for HLA haplotypes could identify at-risk children, enabling early diagnosis and treatment.

Area of Science:

  • Endocrinology
  • Genetics
  • Pediatrics

Background:

  • Type 1 diabetes (DMT1) is an autoimmune condition associated with an increased risk of other autoimmune disorders.
  • Associated conditions include Hashimoto's thyroiditis, Graves' disease, Celiac disease, and Addison's disease.
  • Addison's disease, if undiagnosed, can be fatal.

Observation:

  • A 6-year-old male with DMT1 presented with adrenal crisis.
  • The patient was diagnosed with Addison's disease.
  • The patient later tested positive for the HLA-DRB1 404/DR4 haplotype, a gene associated with Addison's disease in children with DMT1.

Findings:

  • The HLA-DRB1 404/DR4 haplotype is implicated in the development of Addison's disease in pediatric patients with DMT1.
  • Current practice does not routinely include genetic testing for associated conditions in DMT1 patients.

Implications:

  • Genetic testing of associated HLA haplotypes could serve as a screening tool for Addison's disease in children with DMT1.
  • Early identification of at-risk individuals can facilitate timely diagnosis and intervention, potentially preventing life-threatening adrenal crisis.

Related Concept Videos

Autoimmune Disorders01:29

Autoimmune Disorders

Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
Concept and Mechanism of Autoimmune Diseases
The immune system...
Polygenic Traits01:18

Polygenic Traits

When more than one gene is responsible for a given phenotype, the trait is considered polygenic. Human height is a polygenic trait. Studies have uncovered hundreds of loci that influence height, and there are believed to be many more. Due to the high number of genes involved, as well as environmental and nutritional factors, height varies significantly within a given population. The distribution of height forms a bell-shaped curve, with relatively few individuals in the population at the...
Polygenic Traits01:18

Polygenic Traits

When more than one gene is responsible for a given phenotype, the trait is considered polygenic. Human height is a polygenic trait. Studies have uncovered hundreds of loci that influence height, and there are believed to be many more. Due to the high number of genes involved, as well as environmental and nutritional factors, height varies significantly within a given population. The distribution of height forms a bell-shaped curve, with relatively few individuals in the population at the...
Pleiotropy01:33

Pleiotropy

Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
Genome-wide Association Studies-GWAS01:11

Genome-wide Association Studies-GWAS

Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
Pedigree Analysis01:35

Pedigree Analysis

Overview