Overview
Neonatal Diabetes Panel
This is a clinical test intended for HelpPurposes or indications for the test. Lab-provided.: Diagnosis, Monitoring, Mutation Confirmation, Pre-symptomatic, Risk Assessment, Screening
Loading data ......
Click Indication tab for more information.
All samples should be shipped via overnight delivery at room temperature.
No weekend or holiday deliveries.
Label each specimen with the patient’s name, date of birth and date sample collected.
Send specimens with complete requisition and consent form, otherwise, specimen processing may be delayed.
Order URL HelpLink to the laboratory webpage with information about how to order this test. Please note that clicking on this link will open a new tab in your internet browser.: http://dnatesting.uchicago.edu/submitting-sample
Specimen source
Buccal swab
Cell culture
Cord blood
Fetal blood
Fibroblasts
Peripheral (whole) blood
Saliva
- Molecular Genetics
- DDeletion/duplication analysis
- Next-Generation (NGS)/Massively parallel sequencing (MPS)
- CSequence analysis of the entire coding region
- Next-Generation (NGS)/Massively parallel sequencing (MPS)
Summary of what is tested
Loading data ......
Click Methodology tab for more
information.
Establish or confirm diagnosis
The mode of inheritance of PNDM is autosomal dominant for mutations in KCNJ11, autosomal dominant or autosomal recessive for mutations in ABCC8 and INS, and autosomal recessive for mutations in GCK and PDX1.
Individuals with autosomal dominant PNDM may have an affected parent or may have a de novo mutation. Each child of an individual with PNDM inherited in an autosomal dominant manner has a 50% chance of inheriting the mutation.
The parents of a child with autosomal recessive PNDM are obligate heterozygotes and therefore carry one mutant allele. Heterozygotes (carriers) for mutations in GCK and PDX1 have a mild form of diabetes mellitus known as GCK-familial monogenic diabetes (formerly known as MODY2) and PDX1-familial monogenic diabetes (formerly known as MODY4). At conception, each sib of an affected individual has a 25% chance of being affected, a 50% chance of being an asymptomatic carrier (or of having familial monogenic diabetes), and a 25% chance of being unaffected and not a carrier.
Prenatal diagnosis for pregnancies at increased risk is possible if the disease-causing mutation(s) in the family are known.
Homozygous EIF2AK3 mutations cause Wolcott-Rallison syndrome (WRS; OMIM#226980) characterized by permanent neonatal or early infancy insulin-dependent diabetes. Other findings, including epiphyseal dysplasia, osteoporosis, and growth retardation develop at a later age. Other frequent multisystem manifestations include hepatic and renal dysfunction, intellectual disability, and cardiovascular abnormalities.
Homozygous ZFP57 mutations are a rare cause of transient neonatal diabetes.
Mutations in the X-linked gene FOXP3 cause IPEX (Immune dysregulation, Polyendocrinopathy, Enteropathy, X-linked) syndrome, which is characterized by systemic autoimmunity, typically beginning in the first year of life. Presentation is most commonly the clinical triad of watery diarrhea, eczematous dermatitis, and endocrinopathy (most commonly insulin-dependent diabetes mellitus).
- Clinical Testing/Confirmation of Mutations Identified Previously
- Confirmation of research findings
- Custom Prenatal Testing
- Custom mutation-specific/Carrier testing