The gene PAX4 encodes a transcription factor that plays an important role in development of pancreatic islets and the regulation of insulin secretion. Mutations cause type 2 diabetes with susceptibility to ketone acidosis and autosomal dominant MODY9 diabetes.
| Clinic | Method | Carrier testing |
| Turnaround | 5 days | |
| Specimen type | genomic DNA |
| Clinic | Method | Massive parallel sequencing |
| Turnaround | 25 days | |
| Specimen type | genomic DNA |
| Clinic | Method | Genomic sequencing of the entire coding region |
| Turnaround | 25 days | |
| Specimen type | genomic DNA |
| Clinic | Method | Multiplex Ligation-Dependent Probe Amplification |
| Turnaround | 25 days | |
| Specimen type | genomic DNA |