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MODY 4

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Medical condition
MODY 4
SpecialtyEndocrinology

MODY 4 or PDX1-MODY is a form of maturity onset diabetes of the young.

MODY 4 arises from mutations of the PDX1 homeobox gene on chromosome 13. Pdx-1 is a transcription factor vital to the development of the embryonic pancreas. Even in adults it continues to play a role in the regulation and expression of genes for insulin, GLUT2, glucokinase, and somatostatin.

MODY 4 is so rare that only a single family has been well-studied. A child born with pancreatic agenesis (absence of the pancreas) was found to be homozygous for Pdx-1 mutations. A number of older relatives who were heterozygous had mild hyperglycemia or diabetes. None were severely insulin-deficient and all were controlled with either diet or oral hypoglycemic agents.

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ClassificationD
Disease of the pancreas and glucose metabolism
Diabetes
Abnormal blood glucose levels
Insulin disorders
Other pancreatic disorders and conditions
Genetic disorders relating to deficiencies of transcription factor or coregulators
(1) Basic domains
1.2
1.3
(2) Zinc finger
DNA-binding domains
2.1
2.2
2.3
2.5
(3) Helix-turn-helix domains
3.1
3.2
3.3
3.5
(4) β-Scaffold factors
with minor groove contacts
4.2
4.3
4.7
4.11
(0) Other transcription factors
0.6
Ungrouped
Transcription coregulators
Coactivator:
Corepressor:

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  1. Stoffers, Doris A.; Ferrer, Jorge; L. Clarke, William; Habener, Joel (1997). "Early-onset type-II diabetes mellitus (MODY4) linked to IPF1". Nature Genetics. 17: 138–139. doi:10.1038/ng1097-138.
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